Integrated Taxonomic Information System - Taxon Author Search Results


Expert: Paul E. Berry, PhD

ITIS records citing expert
 
 Kingdom Plantae
  Acalypha L. -- accepted -- copperleaf
  Acalypha chamaedrifolia (Lam.) Müll. Arg. -- accepted -- bastard copperleaf
  Acalypha gibsonii (J. Graham) M.R. Almeida -- accepted
  Acalypha leptomyura Baill. -- accepted
  Adelia L. -- accepted -- lime, wild lime
  Adelia ricinella L. -- accepted -- wild lime
  Adelia vaseyi (J.M. Coult.) Pax & K. Hoffm. -- accepted -- Vasey's wild lime
  Adenochlaena Boiss. ex Baill. -- accepted
  Adenochlaena leucocephala Baill. -- accepted
  Adenopetalum Klotzsch & Garcke -- not accepted
  Adenopetalum barnesii Millsp. -- not accepted
  Adenopetalum boerhaviifolium Klotzsch & Garcke -- not accepted
  Adenopetalum bracteatum Klotzsch & Garcke -- not accepted
  Adenopetalum discolor Klotzsch & Garcke -- not accepted
  Adenopetalum ellipticum Klotzsch & Garcke -- not accepted
  Adenopetalum gramineum (Jacq.) Klotzsch & Garcke -- not accepted
  Adenopetalum hoffmannii Klotzsch & Garcke -- not accepted
  Adenopetalum irasuense Klotzsch & Garcke -- not accepted
  Adenopetalum mexicanum Klotzsch & Garcke -- not accepted
  Adenopetalum oerstedii Klotzsch & Garcke -- not accepted
  Adenopetalum pictum (Jacq.) Klotzsch & Garcke -- not accepted
  Adenopetalum pubescens Klotzsch & Garcke -- not accepted
  Adenopetalum sphaerorhizum Klotzsch & Garcke -- not accepted
  Adenopetalum subsinuatum Klotzsch & Garcke -- not accepted
  Adenorima Raf. -- not accepted
  Adenorima gymnonota (Urb.) Millsp. -- not accepted
  Adenorima punicea (Sw.) Raf. -- not accepted
  Adriana Gaudich. -- accepted
  Adriana quadripartita (Labill.) Müll. Arg. -- accepted
  Adriana urticoides (A. Cunn.) Guymer ex P.I. Forst. -- accepted
  Agaloma Raf. -- not accepted
  Agaloma angustifolia Raf. -- not accepted
  Agaloma apocynifolia (Small) Nieuwl. -- not accepted
  Agaloma arundelana (Bartlett) Nieuwl. -- not accepted
  Agaloma ciliata Raf. -- not accepted
  Agaloma corollata (L.) Raf. -- not accepted
  Agaloma corollata var. angustifolia (Elliott) Raf. -- not accepted
  Agaloma curtisii (Engelm.) Nieuwl. -- not accepted
  Agaloma discoidalis (Chapm.) Nieuwl. -- not accepted
  Agaloma eriogonoides (Small) Nieuwl. -- not accepted
  Agaloma exserta (Small) Nieuwl. -- not accepted
  Agaloma gracilis (Small) Nieuwl. -- not accepted
  Agaloma graminifolia Raf. -- not accepted
  Agaloma ipecacuanhae (L.) Nieuwl. -- not accepted
  Agaloma joorii (Norton) Nieuwl. -- not accepted
  Agaloma marginata (Pursh) Á. Löve & D. Löve -- not accepted
  Agaloma marilandica (Greene) House -- not accepted
  Agaloma mercurialina (Michx.) Nieuwl. -- not accepted
  Agaloma oerstediana (Klotzsch & Garcke) D.B. Ward -- not accepted
  Agaloma olivacea (Small) Nieuwl. -- not accepted
  Agaloma paniculata (Boiss.) Nieuwl. -- not accepted
  Agaloma polyphylla (Engelm. ex Holz.) Nieuwl. -- not accepted
  Agaloma pubentissima (Michx.) D.B. Ward -- not accepted
  Agaloma purpurea Raf. -- not accepted
  Agaloma zinniflora (Small) Nieuwl. -- not accepted
  Aklema Raf. -- not accepted
  Aklema adinophylla (Donn. Sm.) Millsp. -- not accepted
  Aklema apocynoides (Klotzsch) Millsp. -- not accepted
  Aklema colletioides (Benth.) Millsp. -- not accepted
  Aklema comonduana (Millsp.) Millsp. -- not accepted
  Aklema cotinifolia (L.) Millsp. -- not accepted
  Aklema elliptica (Klotzsch & Garcke) Millsp. -- not accepted
  Aklema friderichsthalii (Boiss.) Millsp. -- not accepted
  Aklema gaumeri (Millsp.) Millsp. -- not accepted
  Aklema ligustrina (Boiss.) Millsp. -- not accepted
  Aklema mayana (Millsp.) Millsp. -- not accepted
  Aklema nelsonii (Millsp.) Millsp. -- not accepted
  Aklema nudiflora (Lam.) Raf. -- not accepted
  Aklema oaxacana (B.L. Rob. & Greenm.) Millsp. -- not accepted
  Aklema ovata (Schltdl.) Millsp. -- not accepted
  Aklema peganoides (Boiss.) Millsp. -- not accepted
  Aklema petiolaris (Sims) Millsp. ex Britton -- not accepted
  Aklema plicata (S. Watson) Millsp. -- not accepted
  Aklema scotana (Schltdl.) Millsp. -- not accepted
  Aklema tricolor (Greenm.) Millsp. -- not accepted
  Aklema xanti (Engelm. ex Boiss.) Millsp. -- not accepted
  Aklema yavalquahuitl (Schltdl.) Millsp. -- not accepted
  Alchornea Sw. -- accepted
  Alchornea rugosa (Lour.) Müll. Arg. -- accepted
  Alchornea sicca (Blanco) Merr. -- accepted
  Alchornea tiliifolia (Benth.) Müll. Arg. -- accepted
  Alectoroctonum Schltdl. -- not accepted
  Alectoroctonum caracasanum Klotzsch & Garcke -- not accepted
  Alectoroctonum cotinifolium (L.) Schltdl. -- not accepted
  Alectoroctonum cotinoides (Miq.) Klotzsch & Garcke -- not accepted
  Alectoroctonum dilatatum (E. Mey.) Klotzsch & Garcke -- not accepted
  Alectoroctonum nudiflorum (Jacq.) Klotzsch & Garcke -- not accepted
  Alectoroctonum ovatum Schltdl. -- not accepted
  Alectoroctonum petiolare (Sims) Klotzsch & Garcke -- not accepted
  Alectoroctonum riedelianum Klotzsch & Garcke -- not accepted
  Alectoroctonum sanguineum Klotzsch & Garcke -- not accepted
  Alectoroctonum scandens (Kunth) Klotzsch & Garcke -- not accepted
  Alectoroctonum scotanum (Schltdl.) Schltdl. -- not accepted
  Alectoroctonum viride Klotzsch & Garcke -- not accepted
  Alectoroctonum willdenowii Klotzsch & Garcke -- not accepted
  Alectoroctonum wrightii (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
  Alectoroctonum yavalquahuitl Schltdl. -- not accepted
  Aleurites laccifera (L.) Willd. -- not accepted
  Allobia Raf. -- not accepted
  Allobia portlandica (L.) Raf. -- not accepted
  Andrachne L. -- accepted -- maidenbush
  Andrachne microphylla (Lam.) Baill. -- accepted
  Anisophyllum Haw. -- not accepted
  Anisophyllum acutifolium Boivin ex Baill. -- not accepted
  Anisophyllum aegyptiacum (Boiss.) Schweinf. -- not accepted
  Anisophyllum affine Klotzsch & Garcke -- not accepted
  Anisophyllum amoenum Klotzsch & Garcke -- not accepted
  Anisophyllum arabicum (Hochst. & Steud. ex Anderson) Schweinf. -- not accepted
  Anisophyllum arenarium Klotzsch & Garcke -- not accepted
  Anisophyllum atoto (G. Forst.) Klotzsch & Garcke -- not accepted
  Anisophyllum bahiense Klotzsch & Garcke -- not accepted
  Anisophyllum berteroanum (Balb. ex Spreng.) Klotzsch & Garcke -- not accepted
  Anisophyllum besseri Klotzsch & Garcke -- not accepted
  Anisophyllum burmannianum (J. Gay) Klotzsch & Garcke -- not accepted
  Anisophyllum caecorum Klotzsch & Garcke -- not accepted
  Anisophyllum californicum Klotzsch & Garcke -- not accepted
  Anisophyllum centunculoides (Kunth) Klotzsch & Garcke -- not accepted
  Anisophyllum chamaesyce (L.) Haw. -- not accepted
  Anisophyllum chamissonis Klotzsch & Garcke -- not accepted
  Anisophyllum cheirolepis (Fisch. & C.A. Mey. ex Ledeb.) Klotzsch & Garcke -- not accepted
  Anisophyllum congenerum (Blume) Klotzsch & Garcke -- not accepted
  Anisophyllum convolvuloides (Hochst. ex Benth.) Klotzsch & Garcke -- not accepted
  Anisophyllum cordatum Klotzsch & Garcke -- not accepted
  Anisophyllum crassipes Klotzsch -- not accepted
  Anisophyllum densiflorum Klotzsch & Garcke -- not accepted
  Anisophyllum dentatum (Michx.) Haw. -- not accepted
  Anisophyllum dioecum (Kunth) Klotzsch & Garcke -- not accepted
  Anisophyllum emarginatum Klotzsch & Garcke -- not accepted
  Anisophyllum fendleri (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
  Anisophyllum flexuosum (Kunth) Klotzsch & Garcke -- not accepted
  Anisophyllum forsskalii (J. Gay) Klotzsch & Garcke -- not accepted
  Anisophyllum geyeri (Engelm.) Klotzsch & Garcke -- not accepted
  Anisophyllum glabratum (Sw.) Klotzsch & Garcke -- not accepted
  Anisophyllum glaucophyllum (Poir.) Klotzsch & Garcke -- not accepted
  Anisophyllum golianum (Comm. ex Lam.) Klotzsch & Garcke -- not accepted
  Anisophyllum granulatum (Forssk.) Schweinf. -- not accepted
  Anisophyllum humifusum (Willd.) Klotzsch & Garcke -- not accepted
  Anisophyllum humistratum (Engelm. ex A. Gray) Klotzsch & Garcke -- not accepted
  Anisophyllum hypericifolium (L.) Haw. -- not accepted
  Anisophyllum hyssopifolium (L.) Haw. -- not accepted
  Anisophyllum inaequale Klotzsch & Garcke -- not accepted
  Anisophyllum inaequilaterum (Sond.) Klotzsch & Garcke -- not accepted
  Anisophyllum indicum (Lam.) Schweinf. -- not accepted
  Anisophyllum ipecacuanha (L.) Haw. -- not accepted
  Anisophyllum laevigatum Klotzsch & Garcke -- not accepted
  Anisophyllum lasiocarpum (Klotzsch) Klotzsch & Garcke -- not accepted
  Anisophyllum leiospermum Klotzsch & Garcke -- not accepted
  Anisophyllum leucanthum Klotzsch & Garcke -- not accepted
  Anisophyllum lindenianum (A. Rich.) Klotzsch & Garcke -- not accepted
  Anisophyllum lineare (Retz.) Klotzsch & Garcke -- not accepted
  Anisophyllum macropus Klotzsch & Garcke -- not accepted
  Anisophyllum maculatum (L.) Haw. -- not accepted
  Anisophyllum melanadenium (Torr. & A. Gray) Klotzsch & Garcke -- not accepted
  Anisophyllum mexicanum Klotzsch & Garcke -- not accepted
  Anisophyllum meyenianum (Klotzsch) Klotzsch & Garcke -- not accepted
  Anisophyllum mossambicense Klotzsch & Garcke -- not accepted
  Anisophyllum multiforme (Gaudich. ex Hook. & Arn.) Klotzsch & Garcke -- not accepted
  Anisophyllum mundii Klotzsch & Garcke -- not accepted
  Anisophyllum nagleri Klotzsch & Garcke -- not accepted
  Anisophyllum nanum Klotzsch & Garcke -- not accepted
  Anisophyllum nodosum Klotzsch & Garcke -- not accepted
  Anisophyllum novomexicanum Klotzsch & Garcke -- not accepted
  Anisophyllum ocymoideum (L.) Haw. -- not accepted
  Anisophyllum orbiculatum (Kunth) Klotzsch & Garcke -- not accepted
  Anisophyllum ovalifolium Engelm. ex Klotzsch -- not accepted
  Anisophyllum peplis (L.) Haw. -- not accepted
  Anisophyllum piluliferum (L.) Haw. -- not accepted
  Anisophyllum polycnemoides (Hochst. ex Boiss.) Klotzsch & Garcke -- not accepted
  Anisophyllum polygonifolium (L.) Haw. -- not accepted
  Anisophyllum prostratum (Aiton) Haw. -- not accepted
  Anisophyllum ramosissimum Klotzsch & Garcke -- not accepted
  Anisophyllum rhytispermum Klotzsch & Garcke -- not accepted
  Anisophyllum roseum (Retz.) Haw. -- not accepted
  Anisophyllum ruizianum Klotzsch & Garcke -- not accepted
  Anisophyllum scordiifolium (Jacq.) Klotzsch & Garcke -- not accepted
  Anisophyllum scutelligerum Boivin ex Baill. -- not accepted
  Anisophyllum selloi Klotzsch & Garcke -- not accepted
  Anisophyllum senile Klotzsch & Garcke -- not accepted
  Anisophyllum serpens (Kunth) Klotzsch & Garcke -- not accepted
  Anisophyllum setigerum Klotzsch & Garcke -- not accepted
  Anisophyllum tenuiflorum Klotzsch & Garcke -- not accepted
  Anisophyllum tettense Klotzsch & Garcke -- not accepted
  Anisophyllum thymifolium (L.) Haw. -- not accepted
  Anisophyllum vahlii Willd. ex Klotzsch & Garcke -- not accepted
  Anisophyllum vaticanum Gand. -- not accepted
  Anisophyllum velleriflorum Klotzsch & Garcke -- not accepted
  Anisophyllum virgatum Klotzsch & Garcke -- not accepted
  Anthacantha Lem. -- not accepted
  Anthacantha desmetiana Lem. -- not accepted
  Aplarina Raf. -- not accepted
  Aplarina microphylla (Lam.) Raf. -- not accepted
  Aplarina prostrata (Aiton) Raf. -- not accepted
  Argyrodendron bicolor Klotzsch -- not accepted
  Argyrodendron ovatum Boivin ex Baill. -- not accepted
  Argythamnia P. Browne -- accepted -- wild mercury, silverbush
  Argythamnia coatepensis (Brandegee) Croizat -- accepted
  Argythamnia herbacea Spreng. -- not accepted
  Argythamnia sitiens (Brandegee) J.W. Ingram -- accepted
  Arthrothamnus Klotzsch & Garcke -- not accepted
  Arthrothamnus bergii Klotzsch & Garcke -- not accepted
  Arthrothamnus brachiatus Klotzsch & Garcke -- not accepted
  Arthrothamnus burmannii Klotzsch & Garcke -- not accepted
  Arthrothamnus cassythoides (Boiss.) Millsp. -- not accepted
  Arthrothamnus cymosus Klotzsch & Garcke -- not accepted
  Arthrothamnus densiflorus Klotzsch & Garcke -- not accepted
  Arthrothamnus ecklonii Klotzsch & Garcke -- not accepted
  Arthrothamnus scopiformis Klotzsch & Garcke -- not accepted
  Arthrothamnus tirucalli (L.) Klotzsch & Garcke -- not accepted
  Astraea Klotzsch -- accepted
  Astraea aureomarginata (Chodat & Hassl.) P.E. Berry -- accepted
  Astraea cincta (Müll. Arg.) Caruzo & Cordeiro -- accepted
  Astraea comantha (S. Moore) Caruzo -- accepted
  Astraea comosa (Müll. Arg.) B.W. van Ee -- accepted
  Astraea douradensis (Steyerm.) Caruzo -- accepted
  Astraea gardneri (Müll. Arg.) Caruzo -- accepted
  Astraea hauthalii (Kuntze) P.E. Berry -- accepted
  Astraea jatropha (Müll. Arg.) B.W. van Ee -- accepted
  Astraea klotzschii Didr. -- accepted
  Astraea lobata (L.) Klotzsch -- accepted -- lobed croton
  Astraea palmata Klotzsch -- not accepted
  Astraea paulina Didr. -- accepted
  Astraea praetervisa (Müll. Arg.) P.E. Berry -- accepted
  Astraea seemannii Klotzsch -- not accepted
  Athymalus Neck. -- not accepted
  Baliospermum Blume -- accepted
  Baliospermum montanum Müll. Arg. -- accepted
  Baliospermum solanifolium (Burm.) Suresh -- accepted
  Baloghia Endl. -- accepted
  Baloghia inophylla (G. Forst.) P.S. Green -- accepted
  Bernardia Houst. ex P. Browne -- accepted
  Bernardia dichotoma (Willd.) Müll. Arg. -- accepted -- Caribbean myrtlecroton
  Bernardia lagunensis (M.E. Jones) L.C. Wheeler -- accepted
  Bernardia viridis Millsp. -- accepted
  Bertya Planch. -- accepted
  Bertya gummifera Planch. -- accepted
  Bertya opponens (F. Muell. ex Benth.) Guymer -- accepted
  Bertya rosmarinifolia Planch. -- accepted
  Beyeria Miq. -- accepted
  Beyeria viscosa (Labill.) Miq. -- accepted
  Blachia Baill. -- accepted
  Blachia umbellata (Willd.) Baill. -- accepted
  Brachystachys hirta Klotzsch -- not accepted
  Brasiliocroton P.E. Berry & Cordeiro -- accepted
  Brasiliocroton mamoninha P.E. Berry & Cordeiro -- accepted
  Calycopeplus Planch. -- accepted
  Calycopeplus ephedroides Planch. -- not accepted
  Calycopeplus helmsii F. Muell. & Tate -- not accepted
  Calycopeplus paucifolius (Klotzsch) Baill. -- accepted
  Caperonia A. St.-Hil. -- accepted -- falsecroton, false croton
  Caperonia castaneifolia (L.) A. St.-Hil. -- accepted -- chestnutleaf false croton
  Caperonia corchoroides Müll. Arg. -- accepted
  Caperonia heteropetala Didr. -- accepted
  Caperonia palustris (L.) A. St.-Hil. -- accepted -- Texasweed, sacatrapo
  Caperonia serrata C. Presl -- accepted
  Centrandra hondensis H. Karst. -- not accepted
  Chaetocarpus Thwaites -- accepted
  Chaetocarpus globosus (Sw.) Fawc. & Rendle -- accepted
  Chamaesyce Gray -- not accepted -- sandmat
  Chamaesyce abdita D.G. Burch -- not accepted
  Chamaesyce abramsiana (L.C. Wheeler) Koutnik -- not accepted -- Abrams' spurge, Abrams' sandmat
  Chamaesyce acuta Millsp. -- not accepted -- pointed sandmat
  Chamaesyce adenoptera (Bertol.) Small -- not accepted -- southern Florida sandmat
  Chamaesyce adenoptera ssp. adenoptera (Bertol.) Small -- not accepted
  Chamaesyce adenoptera ssp. canescens Proctor -- not accepted
  Chamaesyce adenoptera ssp. gundlachii (Urb.) D.G. Burch -- not accepted
  Chamaesyce adenoptera ssp. pergamena (Small) D.G. Burch -- not accepted -- southern Florida sandmat
  Chamaesyce adhaerens Small -- not accepted
  Chamaesyce adicioides Small -- not accepted
  Chamaesyce aequata Lunell -- not accepted
  Chamaesyce aequata var. claudicans Lunell -- not accepted
  Chamaesyce aequata var. erecta (Lundell) Lundell -- not accepted
  Chamaesyce albescens (Urb.) Millsp. -- not accepted
  Chamaesyce albicaulis (Rydb.) Rydb. -- not accepted
  Chamaesyce albomarginata (Torr. & A. Gray) Small -- not accepted -- whitemargin spurge, rattlesnake weed, whitemargin euphorbia, whitemargin sandmat
  Chamaesyce alsiniflora (Baill.) D.C. Hassall -- not accepted
  Chamaesyce ammannioides (Kunth) Small -- not accepted
  Chamaesyce ammatotricha (Boiss.) Millsp. -- not accepted
  Chamaesyce amoena (Klotzsch & Garcke) Millsp. -- not accepted
  Chamaesyce amplexicaulis (Hook. f.) D.G. Burch -- not accepted
  Chamaesyce andromedae (Millsp.) Millsp. -- not accepted
  Chamaesyce anegadensis Millsp. -- not accepted
  Chamaesyce angusta (Engelm.) Small -- not accepted -- blackfoot sandmat
  Chamaesyce anisopetala Prokh. -- not accepted
  Chamaesyce anthonyi (Brandegee) G.A. Levin -- not accepted
  Chamaesyce anychioides (Boiss.) Millsp. -- not accepted
  Chamaesyce apatzingana (McVaugh) McVaugh -- not accepted
  Chamaesyce arabica (Hochst. & Steud. ex Anderson) Soják -- not accepted
  Chamaesyce arenicola (Parish) Millsp. -- not accepted
  Chamaesyce arequipensis Croizat -- not accepted
  Chamaesyce arizonica (Engelm.) Arthur -- not accepted -- Arizona sandmat
  Chamaesyce arnottiana (Endl.) O. Deg., I. Deg. & Croizat -- not accepted -- `akoko
  Chamaesyce articulata (Burm.) Britton -- not accepted -- jointed sandmat
  Chamaesyce astyla (Engelm. ex Boiss.) Millsp. -- not accepted -- alkali sandmat
  Chamaesyce atoto (G. Forst.) Croizat -- not accepted
  Chamaesyce atoto f. minor (Boiss.) Hurus. -- not accepted
  Chamaesyce atrococca (A. Heller) Croizat & O. Deg. -- not accepted -- koko
  Chamaesyce aureola Millsp. -- not accepted
  Chamaesyce auricularia (Boiss.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce australis (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce bahiensis (Klotzsch & Garcke) Dugand & D.G. Burch -- not accepted
  Chamaesyce balakrishnanii (Binojk. & Gopalan) V.S. Raju -- not accepted
  Chamaesyce balbisii (Boiss.) Millsp. -- not accepted
  Chamaesyce barberoana Croizat -- not accepted
  Chamaesyce barbicarina Millsp. -- not accepted
  Chamaesyce bartolomaei (Greene) Millsp. -- not accepted
  Chamaesyce berteroana (Balb. ex Spreng.) Millsp. -- not accepted -- Bertero's sandmat
  Chamaesyce biconvexa (Domin) D.C. Hassall -- not accepted
  Chamaesyce bifida (Hook. & Arn.) T. Kuros. -- not accepted
  Chamaesyce bindloensis (A. Stewart) D.G. Burch -- not accepted
  Chamaesyce biramensis (Urb.) Alain -- not accepted
  Chamaesyce blodgettii (Engelm. ex Hitchc.) Small -- not accepted -- limestone sandmat
  Chamaesyce boliviana (Rusby) Croizat -- not accepted
  Chamaesyce bombensis (Jacq.) Dugand -- not accepted -- Dixie sandmat
  Chamaesyce bracei (Millsp.) Millsp. -- not accepted
  Chamaesyce brachypoda Small -- not accepted
  Chamaesyce brandegeei (Millsp.) Millsp. -- not accepted
  Chamaesyce brasiliensis (Lam.) Small -- not accepted
  Chamaesyce brittonii (Millsp.) Millsp. -- not accepted
  Chamaesyce bruntii Proctor -- not accepted
  Chamaesyce bryophylla (Donn. Sm.) Millsp. -- not accepted
  Chamaesyce burmanica (Hook. f.) Soják -- not accepted
  Chamaesyce buxifolia (Lam.) Small -- not accepted
  Chamaesyce caecorum (Mart. ex Boiss.) Croizat -- not accepted
  Chamaesyce camagueyensis Millsp. -- not accepted
  Chamaesyce canescens (L.) Prokh. -- not accepted
  Chamaesyce canescens ssp. glabra (Roep.) Soják -- not accepted
  Chamaesyce canescens ssp. massiliensis (DC.) Soják -- not accepted
  Chamaesyce capillaris (Gagnep.) Soják -- not accepted
  Chamaesyce capitellata (Engelm.) Millsp. -- not accepted -- head sandmat
  Chamaesyce carissoides (F.M. Bailey) D.C. Hassall ex P.I. Forst. & R.J.F. Hend. -- not accepted
  Chamaesyce carmenensis (Rose) Millsp. -- not accepted
  Chamaesyce carunculata (Waterf.) Shinners -- not accepted -- sanddune sandmat
  Chamaesyce catamarcensis Croizat -- not accepted
  Chamaesyce cayensis (Millsp.) Millsp. -- not accepted
  Chamaesyce celastroides (Boiss.) Croizat & O. Deg. -- not accepted -- `ekoko
  Chamaesyce celastroides var. laehiensis (O. Deg., I. Deg. & Sherff) Koutnik -- not accepted -- `ekoko
  Chamaesyce celastroides var. nelsonii (H. St. John) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce celastroides var. tomentella (Boiss.) Koutnik -- not accepted -- `ekoko
  Chamaesyce centralis (B.G. Thomson) P.I. Forst. & R.J.F. Hend. -- not accepted
  Chamaesyce centunculoides (Kunth) Millsp. -- not accepted
  Chamaesyce chaetocalyx (Boiss.) Wooton & Standl. -- not accepted -- bristlecup sandmat
  Chamaesyce chaetocalyx var. triligulata (L.C. Wheeler) Mayfield -- not accepted -- bristlecup sandmat, three-tongued spurge
  Chamaesyce chalicophila (Weath.) Millsp. -- not accepted
  Chamaesyce chamaecaula (Weath.) Millsp. -- not accepted
  Chamaesyce chamaerrhodos (Boiss.) Croizat -- not accepted
  Chamaesyce chamaesyce (L.) Hurus. -- not accepted
  Chamaesyce chamaesycoides (B. Nord.) Koutnik -- not accepted
  Chamaesyce chamissonis (Klotzsch & Garcke) F.C. Ho -- not accepted
  Chamaesyce chiogenes Small -- not accepted
  Chamaesyce cinerascens (Engelm.) Small -- not accepted -- ashy sandmat
  Chamaesyce clarkeana (Hook. f.) Soják -- not accepted
  Chamaesyce clusiifolia (Hook. & Arn.) Arthur -- not accepted -- forest sandmat
  Chamaesyce coccinea (B. Heyne ex Roth) Soják -- not accepted
  Chamaesyce coghlanii (F.M. Bailey) D.C. Hassall ex P.I. Forst. & R.J.F. Hend. -- not accepted
  Chamaesyce concanensis (Janarth. & S.R. Yadav) V.S. Raju -- not accepted
  Chamaesyce conferta Small -- not accepted -- Everglade Key sandmat
  Chamaesyce conjuncta (Millsp.) Millsp. -- not accepted
  Chamaesyce consanguinea Millsp. -- not accepted
  Chamaesyce cordata (Klotzsch & Garcke) Arthur -- not accepted
  Chamaesyce cordifolia (Elliott) Small -- not accepted -- heartleaf sandmat
  Chamaesyce corrigioloides (Boiss.) Soják -- not accepted
  Chamaesyce coudercii (Gagnep.) Soják -- not accepted
  Chamaesyce cowellii Millsp. ex Britton -- not accepted -- Cowell's sandmat
  Chamaesyce cozumelensis (Millsp.) Millsp. -- not accepted
  Chamaesyce crassinodis (Urb.) Millsp. -- not accepted
  Chamaesyce crepitata (L.C. Wheeler) Mayfield -- not accepted
  Chamaesyce crepitata var. longa (M.C. Johnst.) Mayfield -- not accepted
  Chamaesyce cristata (B. Heyne ex Roth) G.L. Webster -- not accepted
  Chamaesyce cumbrae (Boiss.) Millsp. -- not accepted
  Chamaesyce cumulicola Small -- not accepted -- coastal dune sandmat
  Chamaesyce dallachyana (Baill.) D.C. Hassall -- not accepted
  Chamaesyce degeneri (Sherff) Croizat & O. Deg. -- not accepted -- beach sandmat
  Chamaesyce deltoidea (Engelm. ex Chapm.) Small -- not accepted -- wedge sandmat
  Chamaesyce deltoidea ssp. adhaerens (Small) A. Herndon -- not accepted
  Chamaesyce deltoidea ssp. deltoidea (Engelm. ex Chapm.) Small -- not accepted -- deltoid spurge, wedge sandmat
  Chamaesyce deltoidea ssp. pinetorum (Small) A. Herndon -- not accepted -- wedge sandmat, Pineland sandmat
  Chamaesyce deltoidea ssp. serpyllum (Small) D.G. Burch -- not accepted -- wedge sandmat, Pineland sandmat
  Chamaesyce deltoidea var. adhaerens (Small) D.G. Burch -- not accepted
  Chamaesyce densiflora (Klotzsch & Garcke) Millsp. -- not accepted
  Chamaesyce deppeana (Boiss.) Millsp. -- not accepted -- `akoko, Oahu sandmat
  Chamaesyce dioeca (Kunth) Millsp. -- not accepted -- royal sandmat
  Chamaesyce dorsiventralis (Urb.) Millsp. -- not accepted
  Chamaesyce drummondii (Boiss.) Soják -- not accepted
  Chamaesyce duckei Croizat -- not accepted
  Chamaesyce eichleri (Müll. Arg.) Croizat -- not accepted
  Chamaesyce eleanoriae Lorence & W.L. Wagner -- not accepted -- Na Pali sandmat, akoko
  Chamaesyce elegans (Spreng.) Soják -- not accepted
  Chamaesyce emarginata (Klotzsch & Garcke) Croizat -- not accepted
  Chamaesyce emodi (Hook. f.) Soják -- not accepted
  Chamaesyce engelmannii (Boiss.) Soják -- not accepted
  Chamaesyce erecta Lunell -- not accepted
  Chamaesyce erythroclada (Boiss.) Soják -- not accepted
  Chamaesyce exstipulata (Engelm.) Rydb. -- not accepted
  Chamaesyce exumensis Millsp. -- not accepted
  Chamaesyce eylesii (Rendle) Koutnik -- not accepted
  Chamaesyce feddemae (McVaugh) McVaugh -- not accepted
  Chamaesyce fendleri (Torr. & A. Gray) Small -- not accepted -- Fendler's sandmat
  Chamaesyce fendleri var. chaetocalyx (Boiss.) Shinners -- not accepted
  Chamaesyce fendleri var. triligulata (L.C. Wheeler) Shinners -- not accepted
  Chamaesyce festiva (Sherff) Croizat & O. Deg. -- not accepted
  Chamaesyce filicaulis (Urb.) Alain -- not accepted
  Chamaesyce filipes (Benth.) D.C. Hassall -- not accepted
  Chamaesyce fimbriata R.R. Rao & Razi -- not accepted
  Chamaesyce fimbriata ssp. burmanica (Panigrahi) K.S. Rao & M.N.V. Prasad -- not accepted
  Chamaesyce flagelliformis (Engelm.) Rydb. -- not accepted
  Chamaesyce floribunda (Engelm. ex Boiss.) Millsp. -- not accepted
  Chamaesyce florida (Engelm.) Millsp. -- not accepted -- Chiricahua Mountain sandmat
  Chamaesyce forbesii (Sherff) Croizat & O. Deg. -- not accepted
  Chamaesyce fosbergii J. Florence -- not accepted
  Chamaesyce fruticulosa (Engelm. ex Boiss.) Millsp. -- not accepted
  Chamaesyce fruticulosa var. hirtella (M.C. Johnst.) Mayfield -- not accepted
  Chamaesyce galapageia (B.L. Rob. & Greenm.) D.G. Burch -- not accepted
  Chamaesyce garanbiensis (Hayata) H. Hara -- not accepted
  Chamaesyce garberi (Engelm. ex Chapm.) Small -- not accepted -- Garber's spurge, Garber's sandmat
  Chamaesyce garheana (Boiss.) Millsp. -- not accepted
  Chamaesyce gemella (Lag.) Small -- not accepted
  Chamaesyce geyeri (Engelm.) Small -- not accepted -- Geyer's spurge, Geyer's sandmat
  Chamaesyce geyeri var. wheeleriana (Warnock & M.C. Johnst.) Mayfield -- not accepted -- Geyer's sandmat
  Chamaesyce glanduligera (Pax) Koutnik -- not accepted
  Chamaesyce glaucescens (Willd.) V.S. Raju -- not accepted
  Chamaesyce glaucophylla (Poir.) Croizat -- not accepted
  Chamaesyce glomerifera Millsp. -- not accepted
  Chamaesyce glyptosperma (Engelm.) Small -- not accepted -- ridgeseed spurge, rib-seed sandmat, ribseed sandmat
  Chamaesyce glyptosperma var. integrata Lunell -- not accepted
  Chamaesyce glyptosperma var. pubescens (Boiss.) Millsp. -- not accepted
  Chamaesyce golondrina (L.C. Wheeler) Shinners -- not accepted -- boquillas sandmat, swallow spurge
  Chamaesyce gooddingii Millsp. -- not accepted
  Chamaesyce gracillima (S. Watson) Millsp. -- not accepted -- Mexican sandmat
  Chamaesyce grammata McVaugh -- not accepted
  Chamaesyce granulata (Forssk.) Soják -- not accepted
  Chamaesyce granulata var. dentata (N.E. Br.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce granulata var. glabrata (J. Gay) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce granulata var. turcomanica (Boiss.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce greenei (Millsp.) Rydb. -- not accepted
  Chamaesyce grisea (Engelm. ex Boiss.) Millsp. -- not accepted
  Chamaesyce gundlachii (Urb.) Alain -- not accepted
  Chamaesyce gymnadenia (Urb.) Millsp. -- not accepted
  Chamaesyce halemanui (Sherff) Croizat & O. Deg. -- not accepted -- Kauai sandmat
  Chamaesyce halophila (Miq.) Croizat -- not accepted
  Chamaesyce harmandii (Gagnep.) Soják -- not accepted
  Chamaesyce hartwegiana (Boiss.) Small -- not accepted
  Chamaesyce hassleriana (Chodat) Soják -- not accepted
  Chamaesyce helwigii (Urb. & Ekman) D.G. Burch -- not accepted
  Chamaesyce hepatica (Urb. & Ekman) D.G. Burch -- not accepted
  Chamaesyce herbstii W.L. Wagner -- not accepted -- `akoko, Herbst's sandmat
  Chamaesyce heyneana (Spreng.) Soják -- not accepted
  Chamaesyce heyneana ssp. galioides (Boiss.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce heyneana ssp. heyneana (Spreng.) Soják -- not accepted
  Chamaesyce heyneana ssp. nilagirica (Miq.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce hillebrandii (H. Lév.) Croizat & O. Deg. -- not accepted
  Chamaesyce hirsuta (Torr.) Arthur -- not accepted
  Chamaesyce hirta (L.) Millsp. -- not accepted -- pill-pod sandmat, pillpod sandmat
  Chamaesyce hirta f. glaberrima (Koidz.) Hurus. -- not accepted
  Chamaesyce hirta f. litoralis Hurus. -- not accepted
  Chamaesyce hirta ssp. procumbens (Boiss.) Croizat -- not accepted
  Chamaesyce hirta var. glaberrima (Koidz.) H. Hara -- not accepted
  Chamaesyce hirta var. laeticincta Croizat -- not accepted
  Chamaesyce hirta var. procumbens (Boiss.) Moldenke -- not accepted
  Chamaesyce hirtella (Boiss.) Croizat -- not accepted
  Chamaesyce hirtula (Engelm. ex S. Watson) Millsp. -- not accepted
  Chamaesyce hispida (Boiss.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce hookeri (Steud.) Arthur -- not accepted
  Chamaesyce hooveri (L.C. Wheeler) Koutnik -- not accepted -- Hoover's spurge, Hoover's sandmat
  Chamaesyce hsinchuensis S.C. Lin & S.M. Chaw -- not accepted
  Chamaesyce humifusa (Willd.) Prokh. -- not accepted
  Chamaesyce humifusa f. glabra (H. Hara) Hurus. -- not accepted
  Chamaesyce humifusa f. pilosa (H. Hara) Hurus. -- not accepted
  Chamaesyce humifusa var. glabra (C.A. Mey.) H. Hara -- not accepted
  Chamaesyce humifusa var. pilosa (C.A. Mey.) H. Hara -- not accepted
  Chamaesyce humifusa var. pseudochamaesyce (Fisch. & C.A. Mey.) Hurus. -- not accepted
  Chamaesyce humistrata (Engelm. ex A. Gray) Small -- not accepted -- spreading sandmat
  Chamaesyce hunzikeri (Subils) Holub -- not accepted
  Chamaesyce hypericifolia (L.) Millsp. -- not accepted -- graceful spurge, graceful sandmat
  Chamaesyce hyssopifolia (L.) Small -- not accepted -- leafy spurge, hyssop spurge, hyssopleaf sandmat
  Chamaesyce inaequalis (Klotzsch & Garcke) Millsp. -- not accepted
  Chamaesyce inaequilatera (Sond.) Soják -- not accepted
  Chamaesyce inappendiculata (Domin) D.C. Hassall -- not accepted
  Chamaesyce incerta (Brandegee) Millsp. -- not accepted
  Chamaesyce indica (Lam.) Croizat -- not accepted
  Chamaesyce indivisa (Engelm.) Millsp. -- not accepted
  Chamaesyce ingallsii Small -- not accepted
  Chamaesyce insulisalis Millsp. -- not accepted
  Chamaesyce interaxillaris (Fernald) Millsp. -- not accepted
  Chamaesyce intermixta (S. Watson) Millsp. -- not accepted
  Chamaesyce involuta (Millsp.) Millsp. -- not accepted
  Chamaesyce jamesonii (Boiss.) G.L. Webster -- not accepted
  Chamaesyce jejuna (M.C. Johnst. & Warnock) Shinners -- not accepted -- dwarf sandmat
  Chamaesyce jenningsii Millsp. ex Britton -- not accepted
  Chamaesyce jodhpurensis (Blatt. & Hallb.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce johnstonii (Mayfield) Mayfield -- not accepted
  Chamaesyce jonesii (Millsp.) Millsp. -- not accepted
  Chamaesyce jovetii (Huguet) Holub -- not accepted
  Chamaesyce karwinskyi (Boiss.) Millsp. -- not accepted
  Chamaesyce katrajensis (Gage) Soják -- not accepted
  Chamaesyce katrajensis var. kasaragodensis (V.J. Nair, Binojk. & R. Ansari) V.S. Raju -- not accepted
  Chamaesyce koerneriana (Allem & Irgang) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce kuriensis (Vierh.) Soják -- not accepted
  Chamaesyce kuwaleana (O. Deg. & Sherff) O. Deg. & I. Deg. -- not accepted -- `akoko, kokomalei
  Chamaesyce laciniata (Panigrahi) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce laciniata ssp. burmanica (Panigrahi) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce lansingii Millsp. -- not accepted
  Chamaesyce laredana (Millsp.) Small -- not accepted -- Laredo sandmat
  Chamaesyce lasiocarpa (Klotzsch) Arthur -- not accepted -- roadside sandmat
  Chamaesyce lata (Engelm.) Small -- not accepted -- hoary spurge, hoary sandmat
  Chamaesyce lawsonii (Binojk. & Dwarakan) V.S. Raju -- not accepted
  Chamaesyce lecheoides (Millsp.) Millsp. -- not accepted
  Chamaesyce lecheoides var. exumensis (Millsp.) D.G. Burch -- not accepted
  Chamaesyce lecheoides var. wilsonii (Millsp.) D.G. Burch -- not accepted
  Chamaesyce leonardii D.G. Burch -- not accepted
  Chamaesyce leucantha (Klotzsch & Garcke) Millsp. -- not accepted
  Chamaesyce leucophylla (Benth.) Millsp. -- not accepted
  Chamaesyce levis (Poir.) Croizat -- not accepted
  Chamaesyce liliputiana (C. Wright ex Urb.) Millsp. -- not accepted
  Chamaesyce linearifolia Soják -- not accepted
  Chamaesyce linearifolia var. nallamalayana (J.L. Ellis) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce linearis (Retz.) Millsp. -- not accepted
  Chamaesyce lineata (S. Watson) Millsp. -- not accepted
  Chamaesyce linguiformis (McVaugh) McVaugh -- not accepted
  Chamaesyce linguiformis var. actinadenia McVaugh -- not accepted
  Chamaesyce lissosperma (S. Carter) Soják -- not accepted
  Chamaesyce liukiuensis (Hayata) H. Hara -- not accepted
  Chamaesyce livida (E. Mey. ex Boiss.) Koutnik -- not accepted
  Chamaesyce longeramosa (S. Watson) Millsp. -- not accepted
  Chamaesyce longinsulicola (S.R. Hill) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce longistyla (Boiss.) Croizat -- not accepted
  Chamaesyce lorentzii (Müll. Arg.) Croizat -- not accepted
  Chamaesyce lorifolia (A. Gray ex H. Mann) Croizat & O. Deg. -- not accepted
  Chamaesyce luisensis Millsp. -- not accepted
  Chamaesyce lutulenta Croizat -- not accepted
  Chamaesyce luzoniensis (Merr.) Soják -- not accepted
  Chamaesyce macgillivrayi (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce magdalenae (Benth.) Millsp. -- not accepted
  Chamaesyce makinoi (Hayata) H. Hara -- not accepted
  Chamaesyce makinoi var. liukiuensis (Hayata) Hurus. -- not accepted
  Chamaesyce malaca Small -- not accepted
  Chamaesyce mangletii (Urb.) Alain -- not accepted
  Chamaesyce marayensis (Subils) Holub -- not accepted
  Chamaesyce maritima Gray -- not accepted
  Chamaesyce massiliensis (DC.) Galushko -- not accepted
  Chamaesyce mathewsii Small -- not accepted
  Chamaesyce mauritiana Comm. ex Denis -- not accepted
  Chamaesyce melanadenia (Torr. & A. Gray) Millsp. -- not accepted -- squaw sandmat, red-gland spurge, prostrate spurge
  Chamaesyce melanocarpa (Boiss.) G.L. Webster -- not accepted
  Chamaesyce mendezii (Boiss.) Millsp. -- not accepted -- Mendez's sandmat
  Chamaesyce mertonii (Fosberg) Soják -- not accepted
  Chamaesyce mesembrianthemifolia (Jacq.) Dugand -- not accepted -- coastal beach sandmat
  Chamaesyce meyeniana (Klotzsch) Croizat -- not accepted
  Chamaesyce micradenia (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce microcephala (Boiss.) Croizat -- not accepted
  Chamaesyce microclada (Urb.) Alain -- not accepted
  Chamaesyce micromera (Boiss. ex Engelm.) Wooton & Standl. -- not accepted -- desert spurge, Sonoran sandmat
  Chamaesyce microphylla (Lam.) Soják -- not accepted
  Chamaesyce minbuensis (Gage) Soják -- not accepted
  Chamaesyce minutula (Boiss.) D.G. Burch -- not accepted
  Chamaesyce missurica (Raf.) Shinners -- not accepted -- Missouri spurge, prairie sandmat
  Chamaesyce missurica var. calcicola Shinners -- not accepted
  Chamaesyce missurica var. petaloidea (Engelm.) Dorn -- not accepted
  Chamaesyce mitchelliana (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce mitchelliana var. hirta (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce monensis Millsp. -- not accepted
  Chamaesyce montana Alain -- not accepted
  Chamaesyce mosieri Small -- not accepted
  Chamaesyce mossambicensis (Klotzsch & Garcke) Koutnik -- not accepted
  Chamaesyce multiformis (Gaudich. ex Hook. & Arn.) Croizat & O. Deg. -- not accepted -- variable sandmat
  Chamaesyce multinodis (Urb.) Millsp. -- not accepted
  Chamaesyce myrtillifolia (L.) Millsp. -- not accepted
  Chamaesyce myrtoides (Boiss.) D.C. Hassall -- not accepted
  Chamaesyce nana (Klotzsch & Garcke) M.P. Simmons & W.J. Hayden -- not accepted
  Chamaesyce neomexicana (Greene) Standl. -- not accepted
  Chamaesyce neopolycnemoides (Pax & K. Hoffm.) Koutnik -- not accepted
  Chamaesyce niqueroana (Urb.) Alain -- not accepted
  Chamaesyce nirurioides Millsp. -- not accepted
  Chamaesyce notoptera (Boiss.) Soják -- not accepted
  Chamaesyce nummularia (Hook. f.) D.G. Burch -- not accepted
  Chamaesyce nummularia var. glabra (B.L. Rob. & Greenm.) D.G. Burch -- not accepted
  Chamaesyce nutans (Lag.) Small -- not accepted -- spotted sandmat, spotted spurge, nodding spurge, eyebane
  Chamaesyce nuttallii (Engelm.) Small -- not accepted
  Chamaesyce obliqua (F.A. Bauer ex Endl.) J. Florence -- not accepted
  Chamaesyce occidentalis (Drew) Millsp. -- not accepted
  Chamaesyce ocellata (Durand & Hilg.) Millsp. -- not accepted -- valley spurge, Contura Creek sandmat
  Chamaesyce ocellata ssp. arenicola (Parish) Thorne -- not accepted -- Contura Creek sandmat
  Chamaesyce ocellata ssp. ocellata (Durand & Hilg.) Millsp. -- not accepted -- Contura Creek sandmat
  Chamaesyce ocellata ssp. rattanii (S. Watson) Koutnik -- not accepted -- Rattan's sandmat
  Chamaesyce ocellata var. arenicola (Parish) N.H. Holmgren & P.K. Holmgren -- not accepted
  Chamaesyce olowaluana (Sherff) Croizat & O. Deg. -- not accepted -- alpine sandmat
  Chamaesyce ophiolitica P.I. Forst. -- not accepted
  Chamaesyce ophthalmica (Pers.) D.G. Burch -- not accepted -- Florida hammock sandmat
  Chamaesyce oranensis Croizat -- not accepted
  Chamaesyce orbiculata (Kunth) Soják -- not accepted
  Chamaesyce orbiculata ssp. galioides (Boiss.) Soják -- not accepted
  Chamaesyce orbiculata ssp. nilagirica (Miq.) Soják -- not accepted
  Chamaesyce orbifolia Alain -- not accepted -- Mona Island sandmat
  Chamaesyce ovalifolia (Engelm. ex Klotzsch) Croizat -- not accepted
  Chamaesyce pachypoda (Urb.) Alain -- not accepted
  Chamaesyce pallens (Dillwyn) V.S. Raju -- not accepted
  Chamaesyce parannaquensis (Blanco) H. Hara -- not accepted
  Chamaesyce parciflora (Urb.) D.G. Burch -- not accepted
  Chamaesyce paredonensis Millsp. -- not accepted
  Chamaesyce parishii (Greene) Millsp. ex Parish -- not accepted -- Parish's spurge, Parish's sandmat
  Chamaesyce parryi (Engelm.) Rydb. -- not accepted -- Parry's spurge, Parry's sandmat
  Chamaesyce parviflora (L.) Soják -- not accepted
  Chamaesyce paucipila (Urb.) Millsp. -- not accepted
  Chamaesyce pediculifera (Engelm.) Rose & Standl. -- not accepted -- Carrizo Mountain sandmat
  Chamaesyce pekinensis var. glaberrima (Koidz.) Makino & Nemoto -- not accepted
  Chamaesyce peplis (L.) Prokh. -- not accepted
  Chamaesyce perennans Shinners -- not accepted -- perennial sandmat, perennial spurge
  Chamaesyce pergamena (Small) Small -- not accepted
  Chamaesyce pergracilis (P.G. Mey.) Koutnik -- not accepted
  Chamaesyce perlignea (McVaugh) G.L. Webster -- not accepted
  Chamaesyce petala (Ewart & L.R. Kerr) P.I. Forst. & R.J.F. Hend. -- not accepted
  Chamaesyce petaloidea (Engelm.) Small -- not accepted
  Chamaesyce petrina (S. Watson) Millsp. -- not accepted
  Chamaesyce picachensis (Brandegee) Millsp. -- not accepted
  Chamaesyce pileoides (Millsp.) Millsp. -- not accepted
  Chamaesyce pilosula (Engelm. ex Boiss.) Arthur -- not accepted
  Chamaesyce pilulifera (L.) Small -- not accepted
  Chamaesyce pilulifera var. glaberrima (Koidz.) H. Hara -- not accepted
  Chamaesyce pilulifera var. procumbens (Boiss.) Small -- not accepted
  Chamaesyce pinariona (Urb.) Alain -- not accepted
  Chamaesyce platysperma (Engelm. ex S. Watson) Shinners -- not accepted -- flat-seed sandmat, flatseed sandmat, flat-seeded spurge
  Chamaesyce podadenia (Boiss.) Millsp. -- not accepted
  Chamaesyce polycarpa (Benth.) Millsp. -- not accepted -- small-seed sandmat, manyfruit spurge, smallseed sandmat
  Chamaesyce polycarpa var. hirtella (Boiss.) Millsp. -- not accepted -- smallseed sandmat
  Chamaesyce polycarpa var. simulans (L.C. Wheeler) Shinners -- not accepted
  Chamaesyce polyclada (Boiss.) Small -- not accepted
  Chamaesyce polycnemoides (Hochst. ex Boiss.) Soják -- not accepted
  Chamaesyce polygonifolia (L.) Small -- not accepted -- seaside spurge, chamésyce à feuilles de renouée, seaside sandmat
  Chamaesyce pondii (Millsp.) Millsp. -- not accepted
  Chamaesyce porteriana Small -- not accepted -- Porter's sandmat
  Chamaesyce porteriana var. keyensis (Small) D.G. Burch -- not accepted
  Chamaesyce porteriana var. scoparia (Small) D.G. Burch -- not accepted -- Porter's sandmat
  Chamaesyce portoricensis (Urb.) Millsp. -- not accepted
  Chamaesyce portucasadiana Croizat -- not accepted
  Chamaesyce portulana (S. Watson) Millsp. -- not accepted
  Chamaesyce potentilloides (Boiss.) Croizat -- not accepted
  Chamaesyce potosina (Fernald) Arthur -- not accepted
  Chamaesyce preslii (Guss.) Arthur -- not accepted
  Chamaesyce prieuriana (Baill.) Soják -- not accepted
  Chamaesyce proctorii D.G. Burch -- not accepted
  Chamaesyce prostrata (Aiton) Small -- not accepted -- prostrate spurge, prostrate sandmat, blue weed, ground spurge
  Chamaesyce psammogeton (P.S. Green) P.I. Forst. & R.J.F. Hend. -- not accepted
  Chamaesyce pseudonutans Thell. -- not accepted
  Chamaesyce pseudoserpyllifolia (Millsp.) Millsp. -- not accepted
  Chamaesyce puberula (Fernald) Millsp. -- not accepted
  Chamaesyce punctulata (Andersson) D.G. Burch -- not accepted
  Chamaesyce purisimana (Millsp.) Millsp. -- not accepted
  Chamaesyce pycnanthema (Engelm.) Millsp. -- not accepted
  Chamaesyce pycnostegia (Boiss.) Soják -- not accepted
  Chamaesyce quitensis (Boiss.) G.L. Webster -- not accepted
  Chamaesyce radicans (Engelm. ex Boiss.) Millsp. -- not accepted
  Chamaesyce radioloides (Boiss.) Millsp. -- not accepted
  Chamaesyce rafinesquei (Greene) A. Heller -- not accepted
  Chamaesyce ramosa (Seaton) Millsp. -- not accepted
  Chamaesyce rattanii (S. Watson) Millsp. -- not accepted
  Chamaesyce reconciliationis (Radcl.-Sm.) Soják -- not accepted
  Chamaesyce recurva (Hook. f.) D.G. Burch -- not accepted
  Chamaesyce remyi (A. Gray ex Boiss.) Croizat & O. Deg. -- not accepted -- Remy's sandmat
  Chamaesyce reniformis (Blume) Soják -- not accepted
  Chamaesyce revoluta (Engelm.) Small -- not accepted -- thread-stem sandmat, threadstem spurge, threadstem sandmat
  Chamaesyce rhytisperma (Klotzsch & Garcke) Soják -- not accepted
  Chamaesyce riebeckii (Pax) Soják -- not accepted
  Chamaesyce rochaensis Croizat -- not accepted
  Chamaesyce rockii (C.N. Forbes) Croizat & O. Deg. -- not accepted -- `akoko, Koolau Range sandmat
  Chamaesyce rockii var. grandifolia (Hillebr.) Koutnik -- not accepted
  Chamaesyce rosea (Retz.) G.L. Webster -- not accepted
  Chamaesyce rosei Millsp. -- not accepted
  Chamaesyce rothrockii Millsp. -- not accepted
  Chamaesyce rubida (Greenm.) Millsp. -- not accepted
  Chamaesyce rubrosperma (Lotsy) Millsp. -- not accepted
  Chamaesyce rugulosa (Engelm. ex Millsp.) Rydb. -- not accepted
  Chamaesyce ruiziana (Klotzsch & Garcke) G.L. Webster -- not accepted
  Chamaesyce ruizlealii (Subils) Holub -- not accepted
  Chamaesyce rusbyi (Greene) Millsp. -- not accepted
  Chamaesyce rutilis Millsp. -- not accepted
  Chamaesyce sachetiana J. Florence -- not accepted
  Chamaesyce salsuginosa McVaugh -- not accepted
  Chamaesyce sanmartensis (Rusby) Dugand -- not accepted
  Chamaesyce schlechteri (Pax) Koutnik -- not accepted
  Chamaesyce schultzii (Benth.) D.C. Hassall -- not accepted
  Chamaesyce scoparia Small -- not accepted
  Chamaesyce scopulorum (Brandegee) Millsp. -- not accepted
  Chamaesyce scopulorum var. inornata (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce scopulorum var. nuda (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce scordiifolia (Jacq.) Croizat -- not accepted
  Chamaesyce sebastinei (Binojk. & N.P. Balakr.) V.S. Raju -- not accepted
  Chamaesyce seleri (Donn. Sm.) Millsp. -- not accepted
  Chamaesyce selloi (Klotzsch & Garcke) Croizat -- not accepted
  Chamaesyce selloi var. brevisemina Croizat -- not accepted
  Chamaesyce senguptae (N.P. Balakr. & Subr.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce serpens (Kunth) Small -- not accepted -- serpent spurge, matted sandmat
  Chamaesyce serpens var. montevidensis Croizat -- not accepted
  Chamaesyce serpyllifolia (Pers.) Small -- not accepted -- thyme-leaf sandmat, thymeleaf sandmat
  Chamaesyce serpyllifolia ssp. hirtella (Engelm. ex S. Watson) Koutnik -- not accepted -- thymeleaf sandmat
  Chamaesyce serpyllifolia ssp. serpyllifolia (Pers.) Small -- not accepted -- thyme-leaf sandmat, thymeleaf spurge, thymeleaf sandmat
  Chamaesyce serpyllum Small -- not accepted
  Chamaesyce serratifolia (S. Carter) Soják -- not accepted
  Chamaesyce serrula (Engelm.) Wooton & Standl. -- not accepted -- saw-tooth sandmat, sawtooth sandmat
  Chamaesyce setiloba (Engelm. ex Torr.) Norton -- not accepted
  Chamaesyce setosa (Boiss.) M.P. Simmons & W.J. Hayden -- not accepted
  Chamaesyce simulans (L.C. Wheeler) Mayfield -- not accepted -- smallseed sandmat, mimicking sandmat
  Chamaesyce sistanica (Dinelli & De Marco) Soják -- not accepted
  Chamaesyce skottsbergii (Sherff) Croizat & O. Deg. -- not accepted -- coastal sandmat
  Chamaesyce skottsbergii var. skottsbergii (Sherff) Croizat & O. Deg. -- not accepted -- coastal sandmat
  Chamaesyce skottsbergii var. vaccinioides (Sherff) Koutnik -- not accepted -- coastal sandmat
  Chamaesyce sparrmanii (Boiss.) Hurus. ex S.C. Lin -- not accepted
  Chamaesyce sparsiflora (A. Heller) Koutnik -- not accepted -- Wahiawa bog sandmat
  Chamaesyce spurca (M.C. Johnst.) B.L. Turner -- not accepted
  Chamaesyce standleyi Millsp. -- not accepted
  Chamaesyce stanfieldii Small -- not accepted
  Chamaesyce stictospora (Engelm.) Small -- not accepted -- slim-seed sandmat, slimseed spurge, slimseed sandmat
  Chamaesyce stictospora var. guadalupensis Small -- not accepted
  Chamaesyce stictospora var. sublaevis (M.C. Johnst.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce stictospora var. texensis Fedde -- not accepted
  Chamaesyce stoddartii (Fosberg) Soják -- not accepted
  Chamaesyce sulfurea Millsp. -- not accepted
  Chamaesyce supina (Raf.) Moldenke -- not accepted
  Chamaesyce taihsiensis Chaw & Koutnik -- not accepted
  Chamaesyce tamanduana (Boiss.) M.P. Simmons & W.J. Hayden -- not accepted
  Chamaesyce tamaulipasana Millsp. -- not accepted
  Chamaesyce tashiroi (Hayata) H. Hara -- not accepted
  Chamaesyce tettensis (Klotzsch) Koutnik -- not accepted
  Chamaesyce theriaca (L.C. Wheeler) Shinners -- not accepted -- Terlingua sandmat
  Chamaesyce theriaca var. spurca (M.C. Johnst.) Mayfield -- not accepted
  Chamaesyce thymifolia (L.) Millsp. -- not accepted -- gulf sandmat
  Chamaesyce thymifolia f. suffrutescens (Boiss.) Hurus. -- not accepted
  Chamaesyce tomentulosa (S. Watson) Millsp. -- not accepted
  Chamaesyce tonsita Millsp. -- not accepted
  Chamaesyce torralbasii (Urb.) Millsp. -- not accepted -- Torralbas' sandmat
  Chamaesyce trachysperma (Engelm.) Millsp. -- not accepted -- San Pedro River sandmat
  Chamaesyce tracyi Small -- not accepted
  Chamaesyce trancapatae Croizat -- not accepted
  Chamaesyce trialata Huft -- not accepted
  Chamaesyce triligulata (L.C. Wheeler) B.L. Turner -- not accepted
  Chamaesyce tumistyla D.G. Burch -- not accepted
  Chamaesyce turcomanica (Boiss.) Prokh. -- not accepted
  Chamaesyce turpinii (Boiss.) Millsp. -- not accepted -- Turpin's sandmat
  Chamaesyce umbellulata (Engelm. ex Boiss.) Millsp. -- not accepted
  Chamaesyce urbanii Millsp. -- not accepted
  Chamaesyce vachellii (Hook. & Arn.) H. Hara -- not accepted
  Chamaesyce vaginulata (Griseb.) Millsp. -- not accepted
  Chamaesyce vahlii (Willd. ex Klotzsch & Garcke) P. Wilson -- not accepted
  Chamaesyce vallis-mortae Millsp. -- not accepted -- Death Valley sandmat
  Chamaesyce velleriflora (Klotzsch & Garcke) Millsp. -- not accepted -- Caliche sandmat
  Chamaesyce velligera (S. Schauer) Millsp. -- not accepted
  Chamaesyce vermiculata (Raf.) House -- not accepted -- worm-seed sandmat, wormseed sandmat
  Chamaesyce versicolor (Greene) Norton -- not accepted
  Chamaesyce vestita (Boiss.) Millsp. -- not accepted
  Chamaesyce villifera (Scheele) Small -- not accepted -- hairy sandmat
  Chamaesyce villosior (Greenm.) Millsp. -- not accepted
  Chamaesyce viminea (Hook. f.) D.G. Burch -- not accepted
  Chamaesyce viridula (Cordem. ex Radcl.-Sm.) Soják -- not accepted
  Chamaesyce viscoides (Boiss.) M.P. Simmons & W.J. Hayden -- not accepted
  Chamaesyce vulgaris Prokh. -- not accepted
  Chamaesyce vulgaris ssp. massiliensis (DC.) Benedí & Orell -- not accepted
  Chamaesyce watsonii (Millsp.) Millsp. -- not accepted
  Chamaesyce wheeleri (Baill.) D.C. Hassall -- not accepted
  Chamaesyce wightiana (Hook. f.) V.S. Raju & P.N. Rao -- not accepted
  Chamaesyce wilsonii Millsp. -- not accepted
  Chamaesyce X keyensis Small -- not accepted -- Key's sandmat
  Chamaesyce yayalesia (Urb.) Alain -- not accepted
  Chamaesyce yucatanensis Millsp. -- not accepted
  Chamaesyce zambesiana (Benth.) Koutnik -- not accepted
  Chamaesyce zornioides (Boiss.) Soják -- not accepted
  Chamaesyce zygophylloides (Boiss.) Small -- not accepted
  Characias Gray -- not accepted
  Characias amygdaloides (L.) Gray -- not accepted
  Characias purpurea Gray -- not accepted
  Chiropetalum A. Juss. -- accepted
  Chiropetalum quinquecuspidatum (A. Juss.) Pax & K. Hoffm. -- accepted
  Chiropetalum ruizianum Pax & K. Hoffm. -- accepted
  Chiropetalum tricuspidatum (Lam.) A. Juss. -- accepted
  Chrozophora A. Juss. -- accepted
  Chrozophora brocchiana (Vis.) Schweinf. -- accepted
  Chrozophora oblongifolia (Delile) A. Juss. ex Spreng. -- accepted
  Chrozophora plicata (Vahl) A. Juss. ex Spreng. -- accepted
  Chrozophora senegalensis (Lam.) Spreng. -- accepted
  Chrozophora tinctoria (L.) A. Juss. ex Spreng. -- accepted -- giradol
  Chylogala Fourr. -- not accepted
  Chylogala serrata (L.) Fourr. -- not accepted
  Cieca ackermanniana (Müll. Arg.) Kuntze -- not accepted
  Cieca argentea (L.) Kuntze -- not accepted
  Cieca conspurcata (Schltdl.) Kuntze -- not accepted
  Cieca decaloba (Müll. Arg.) Kuntze -- not accepted
  Cieca doratophylla (Baill.) Kuntze -- not accepted
  Cieca fuscescens (Spreng.) Kuntze -- not accepted
  Cieca gardneri (Müll. Arg.) Kuntze -- not accepted
  Cieca geraesensis (Baill.) Kuntze -- not accepted
  Cieca hondensis (H. Karst.) Kuntze -- not accepted
  Cieca humilis (Didr.) Kuntze -- not accepted
  Cieca lanceolata (Klotzsch ex Müll. Arg.) Kuntze -- not accepted
  Cieca microcalyx (Müll. Arg.) Kuntze -- not accepted
  Cieca montevidensis (Klotzsch ex Baill.) Kuntze -- not accepted
  Cieca nervosa (Baill.) Kuntze -- not accepted
  Cieca peruviana (Müll. Arg.) Kuntze -- not accepted
  Cieca pycnophyllus (Schltdl. ex Müll. Arg.) Kuntze -- not accepted
  Cieca riedeliana (Müll. Arg.) Kuntze -- not accepted
  Cieca solanacea (Müll. Arg.) Kuntze -- not accepted
  Cieca triquetra (Lam.) Kuntze -- not accepted
  Cieca verbascifolia (Klotzsch ex Baill.) Kuntze -- not accepted
  Claoxylon A. Juss. -- accepted
  Claoxylon indicum Hassk. -- accepted
  Claoxylon sphaerocarpum Kuntze -- not accepted
  Clutia cascarilla L. -- not accepted
  Clutia decandra Crantz -- not accepted
  Clutia eluteria L. -- not accepted
  Cnidoscolus surinamensis Miq. -- not accepted
  Codiaeum A. Juss. -- accepted
  Codiaeum bractiferum (Roxb.) Merr. -- accepted
  Codiaeum variegatum (L.) Rumph. ex A. Juss. -- accepted -- garden croton
  Colliguaja Molina -- accepted
  Colliguaja odorifera Molina -- accepted
  Colobocarpus nanus (Gagnep.) Esser & Welzen -- not accepted
  Commiphora reghinii Chiov. -- not accepted
  Crepidaria Haw. -- not accepted
  Crepidaria cordellata (Haw.) Haw. -- not accepted
  Crepidaria myrtifolia (Mill.) Haw. -- not accepted
  Crepidaria padifolia (L.) Haw. -- not accepted
  Crepidaria subcarinata Haw. -- not accepted
  Croton L. -- accepted
  Croton abaitensis Baill. -- accepted
  Croton abeggii Urb. & Ekman -- accepted
  Croton aberrans Müll. Arg. -- accepted
  Croton abnormis Mart. ex Baill. -- not accepted
  Croton abonari Riina & P.E. Berry -- accepted
  Croton abutilifolius Croizat -- accepted
  Croton abutiloides Kunth -- accepted
  Croton abutilopsis G.L. Webster -- accepted
  Croton acapulcensis Mart. Gord. & J. Jiménez Ram. -- accepted
  Croton acerifolius A. Cunn. ex Hook. -- not accepted
  Croton aceroides Radcl.-Sm. -- accepted
  Croton acerrimus Reinw. ex Blume -- not accepted
  Croton ackermannianus (Müll. Arg.) G.L. Webster -- accepted
  Croton acradenius Pax & K. Hoffm. -- accepted
  Croton acronychioides F. Muell. -- accepted
  Croton aculeatus Splitg. ex Lanj. -- not accepted
  Croton acuminatissimus (Pittier) G.L. Webster -- accepted
  Croton acuminatus Lam. -- not accepted
  Croton acuminatus Sessé & Moç. -- not accepted
  Croton acuminatus R. Br. -- not accepted
  Croton acuminatus A. Rich. ex Baill. -- not accepted
  Croton acunae Borhidi -- accepted
  Croton acutifolius Esser -- accepted
  Croton acutus Thunb. ex Murray -- not accepted
  Croton adabolavensis Leandri -- accepted
  Croton adamantinus Müll. Arg. -- accepted
  Croton adenocalyx Baill. -- accepted
  Croton adenodontus (Müll. Arg.) Müll. Arg. -- accepted
  Croton adenopetalus Müll. Arg. -- not accepted
  Croton adenophorus Baill. -- accepted
  Croton adenophorus var. genuinus Baill. -- not accepted
  Croton adenophorus var. loucoubensis Baill. -- not accepted
  Croton adenophyllus Spreng. -- accepted
  Croton adipatus Kunth -- accepted
  Croton adpressus C. Wright & Griseb. -- not accepted
  Croton adspersus Benth. -- accepted
  Croton adumbratus Croizat -- not accepted
  Croton aequatoris Croizat -- accepted
  Croton affinis Geiseler -- not accepted
  Croton affinis Maiden et R.T. Baker -- not accepted
  Croton agoensis Baill. -- accepted
  Croton agrarius Baill. -- accepted
  Croton agrarius var. algernonii Baill. -- not accepted
  Croton agrarius var. augustinianus Baill. -- not accepted
  Croton agrarius var. cremostachyus Baill. -- not accepted
  Croton agrarius var. echinocarpus Baill. -- not accepted
  Croton agrarius var. horridulus Baill. -- not accepted
  Croton agrarius var. inversus Baill. -- not accepted
  Croton agrarius var. laetifolius Baill. -- not accepted
  Croton agrarius var. neuwiedii Baill. -- not accepted
  Croton agrestis (Pax & K. Hoffm.) Radcl.-Sm. & Govaerts -- accepted
  Croton agrophilus Müll. Arg. -- accepted
  Croton alabamensis E.A. Sm. ex Chapm. -- accepted -- Alabama croton
  Croton alabamensis var. alabamensis E.A. Sm. ex Chapm. -- accepted -- Alabama croton
  Croton alabamensis var. texensis Ginzbarg -- accepted -- Texabama croton, Alabama croton
  Croton alainii B.W. van Ee & P.E. Berry -- accepted
  Croton alamosanus Rose -- accepted
  Croton albellus Müll. Arg. -- accepted
  Croton albescens Andersson -- not accepted
  Croton albicans Willd. ex Schltdl. -- not accepted
  Croton albicans (Blume) Rchb. f. & Zoll. -- not accepted
  Croton albidus Müll. Arg. -- not accepted
  Croton albinoides (A.M. Ferguson) Croizat -- not accepted
  Croton alchorneicarpus Croizat -- accepted
  Croton algernonii Baill. -- not accepted
  Croton alienus Pax -- accepted
  Croton allemii G.L. Webster -- accepted
  Croton alloeophyllus Urb. -- accepted
  Croton alnifolius Lam. -- accepted
  Croton alnifolius var. genuinus Müll. Arg. -- not accepted
  Croton alnifolius var. quitensis (Spreng.) Müll. Arg. -- not accepted
  Croton alnoideus Baill. -- accepted
  Croton alpinus A. Chev. ex Gagnep. -- accepted
  Croton alvaradonis M.E. Jones -- accepted
  Croton amazonicus Müll. Arg. -- accepted
  Croton ambanivoulensis Baill. -- accepted
  Croton ambovombensis Radcl.-Sm. & Govaerts -- accepted
  Croton ameliae Lundell -- accepted
  Croton amphileucus Briq. -- accepted
  Croton amplifolius Airy Shaw -- accepted
  Croton andinus Müll. Arg. -- accepted
  Croton andreanus Linden -- not accepted
  Croton andreeus Linden -- not accepted
  Croton androiensis (Leandri) Leandri -- accepted
  Croton angolensis Müll. Arg. -- accepted
  Croton angularis Klotzsch ex Baill. -- not accepted
  Croton angustatus Urb. -- accepted
  Croton angustifolius (Müll. Arg.) Airy Shaw -- accepted
  Croton angustifrons Müll. Arg. -- accepted
  Croton anisatus Baill. -- accepted
  Croton anisodontus Müll. Arg. -- accepted
  Croton ankarensis Leandri -- accepted
  Croton anomalus Pittier -- accepted
  Croton anosiravensis Leandri -- accepted
  Croton antae Airy Shaw -- accepted
  Croton antanosiensis Leandri -- accepted
  Croton antanosiensis var. basaltorum Leandri -- not accepted
  Croton antisyphiliticus Mart. -- accepted
  Croton antisyphiliticus var. angustifolius Müll. Arg. -- not accepted
  Croton antisyphiliticus var. cordiifolius Müll. Arg. -- not accepted
  Croton antisyphiliticus var. echiifolius Müll. Arg. -- not accepted
  Croton antisyphiliticus var. genuinus Müll. Arg. -- not accepted
  Croton antisyphiliticus var. heterotrichus Müll. Arg. -- not accepted
  Croton antisyphiliticus var. hypoleucus Müll. Arg. -- not accepted
  Croton antisyphiliticus var. intermedius Müll. Arg. -- not accepted
  Croton antisyphiliticus var. latifolius (Baill.) Müll. Arg. -- not accepted
  Croton antisyphiliticus var. minor (Baill.) Müll. Arg. -- not accepted
  Croton antisyphiliticus var. minutulus Müll. Arg. -- not accepted
  Croton antisyphiliticus var. mollis Müll. Arg. -- not accepted
  Croton antisyphiliticus var. nitidulus Müll. Arg. -- not accepted
  Croton antisyphiliticus var. perdicipes Müll. Arg. -- not accepted
  Croton antisyphiliticus var. weddellianus (Baill.) Müll. Arg. -- not accepted
  Croton antunesii Pax -- not accepted
  Croton apetalum Blume -- not accepted
  Croton apicifolius Croizat -- accepted
  Croton apostolon Radcl.-Sm. & Govaerts -- accepted
  Croton appendiculatus Elmer -- not accepted
  Croton appertii J. Léonard -- accepted
  Croton araracuarae J. Murillo, P.E. Berry & M.V. Arbelaez -- accepted
  Croton araripensis Croizat -- accepted
  Croton arboreus Millsp. -- accepted
  Croton ardisioides Hook. f. -- not accepted
  Croton arenicola Rose & Standl. -- not accepted
  Croton arenicola Leandri -- not accepted
  Croton arenosus Carn.-Torres & Cordeiro -- accepted
  Croton argentealbidus Radcl.-Sm. & Govaerts -- accepted
  Croton argenteus L. -- accepted -- silver July croton
  Croton argenteus Forssk. -- not accepted
  Croton argentinus Müll. Arg. -- accepted
  Croton argithamnoides Steud. -- not accepted
  Croton argothamnoides Bertol. ex Spreng. -- not accepted
  Croton argutus B. Heyne ex Wall. -- not accepted
  Croton argyranthemus Michx. -- accepted -- silverleaf croton, silver croton, healing croton
  Croton argyratus Blume -- accepted
  Croton argyratus var. brevipes Müll. Arg. -- not accepted
  Croton argyratus var. genuinus Müll. Arg. -- not accepted
  Croton argyratus var. gracilis Müll. Arg. -- not accepted
  Croton argyratus var. hypoleucus Müll. Arg. -- not accepted
  Croton argyratus var. microcarpus Gagnep. -- not accepted
  Croton argyrodaphne Baill. -- accepted
  Croton argyrodaphne var. boinensis Leandri -- not accepted
  Croton argyrodaphne var. occidentalis Leandri -- not accepted
  Croton argyrodaphne var. orientalis Leandri -- not accepted
  Croton argyroglossus Baill. -- not accepted
  Croton argyrophylloides Müll. Arg. -- not accepted
  Croton argyrophyllus Kunth -- accepted
  Croton argyrophyllus var. pubescens (Klotzsch ex Benth.) Müll. Arg. -- not accepted
  Croton aridicola Urb. -- not accepted
  Croton aridus P.I. Forst. -- accepted
  Croton aripoensis Philcox -- accepted
  Croton arirambae Huber -- accepted
  Croton aristophlebius Croizat -- accepted
  Croton arlineae D. Medeiros, L. Senna & R.J.V. Alves -- accepted
  Croton armstrongii S. Moore -- accepted
  Croton arnhemicus Müll. Arg. -- accepted
  Croton arnhemicus var. urenifolius Baill. -- not accepted
  Croton aromaticus L. -- accepted
  Croton aromaticus Gaertn. -- not accepted
  Croton aromaticus Miq. -- not accepted
  Croton aromaticus var. lacciferus (L.) Trimen -- not accepted
  Croton artibonitensis Urb. -- accepted
  Croton ascendens Secco & N.A. Rosa -- accepted
  Croton asper Desv. ex Baill. -- not accepted
  Croton asper K.D. Koenig ex Roxb. -- not accepted
  Croton asperifolius Pax -- not accepted
  Croton asperrimus Benth. -- accepted
  Croton asteroides Lundell -- not accepted
  Croton astianus Croizat -- accepted
  Croton astraeatus Baill. -- not accepted
  Croton astrogynus Baill. -- not accepted
  Croton astroites Dryand. -- accepted -- wild marrow
  Croton astroites Willd. -- not accepted
  Croton astroites var. genuinus Müll. Arg. -- not accepted
  Croton astroites var. lanceolatus Müll. Arg. -- not accepted
  Croton astrophorus Urb. -- accepted
  Croton ater Croizat -- accepted
  Croton atrorufus Müll. Arg. -- accepted
  Croton atrostellatus V.W. Steinm. -- accepted
  Croton atrovirens Wall. -- not accepted
  Croton attenuatus M.E. Jones -- not accepted
  Croton aubrevilecta Leandri -- accepted
  Croton aubrevillei J. Léonard -- accepted
  Croton aucubifolius Andr. -- not accepted
  Croton augustinianus Baill. -- not accepted
  Croton auriculatus Müll. Arg. -- not accepted
  Croton avellaneus Croizat -- not accepted
  Croton avenius Vahl ex Geiseler -- not accepted
  Croton avulsus Croizat -- accepted
  Croton axillaris Müll. Arg. -- accepted
  Croton aymoninorum Leandri -- accepted
  Croton azuensis Urb. -- accepted
  Croton babuyanensis Croizat -- accepted
  Croton bacciferus Wall. -- not accepted
  Croton bahiensis Müll. Arg. -- not accepted
  Croton baillonianus Müll. Arg. -- not accepted
  Croton baillonianus var. pachyphyllus Müll. Arg. -- not accepted
  Croton baillonianus var. submembranaceus Müll. Arg. -- not accepted
  Croton bakerianus Baill. -- not accepted
  Croton baldauffii Leandri -- accepted
  Croton baliospermum Span. -- not accepted
  Croton balsameus Müll. Arg. -- accepted
  Croton balsamifer Jacq. -- not accepted
  Croton balsensis V.W. Steinm. & Mart. Gord. -- accepted
  Croton bangii Rusby -- accepted
  Croton barahonensis Urb. -- accepted
  Croton barbatus Kunth -- accepted
  Croton baronii Baill. -- not accepted
  Croton barorum Leandri -- accepted
  Croton barorum var. mangokyensis Leandri -- not accepted
  Croton barotsensis Gibbs -- not accepted
  Croton bartlettii Lanj. -- not accepted
  Croton bastardii Leandri -- accepted
  Croton batangasensis Croizat -- accepted
  Croton bathianus Leandri -- accepted
  Croton beetlei Croizat -- accepted
  Croton belanseanus Urb. & Ekman -- not accepted
  Croton belintae Leandri -- accepted
  Croton bellulus Linden & André -- not accepted
  Croton bemaranus Leandri -- accepted
  Croton bemarivensis Leandri -- accepted
  Croton benthamianus Müll. Arg. -- not accepted
  Croton benthamianus (Müll. Arg.) Lanj. -- not accepted
  Croton berberifolius Croizat -- accepted
  Croton bergassae Leandri -- accepted
  Croton bergmanii Chantrier ex André -- not accepted
  Croton berlandieri Torr. -- not accepted
  Croton berlandieri Müll. Arg. -- not accepted
  Croton bernieri Baill. -- accepted
  Croton bernieri var. namorokensis Baill. -- not accepted
  Croton betaceus Baill. -- accepted
  Croton betaceus var. genuinus Müll. Arg. -- not accepted
  Croton betaceus var. lanceolatus Müll. Arg. -- not accepted
  Croton betiokensis Leandri -- accepted
  Croton betulaster Müll. Arg. -- accepted
  Croton betulinus Vahl -- accepted -- beechleaf croton
  Croton bevilaniensis Leandri -- accepted
  Croton biaroensis Croizat -- accepted
  Croton bicolor Roxb. -- not accepted
  Croton bidentatus Müll. Arg. -- accepted
  Croton bifurcatus Baill. -- accepted
  Croton bifurcatus var. emeliae (Baill.) Müll. Arg. -- not accepted
  Croton bifurcatus var. genuinus Baill. -- not accepted
  Croton billbergianus Müll. Arg. -- accepted
  Croton billbergianus ssp. billbergianus Müll. Arg. -- accepted
  Croton billbergianus ssp. pyramidalis (Donn. Sm.) Müll. Arg. -- accepted
  Croton bilocularis J. Murillo -- not accepted
  Croton birmanicus Müll. Arg. -- accepted
  Croton bispinosus C. Wright ex Sauvalle -- accepted
  Croton blanchetianus Baill. -- accepted
  Croton blasianus M.E. Jones -- not accepted
  Croton boavitanus Croizat -- accepted
  Croton bocquillonii Baill. -- not accepted
  Croton boinensis Leandri -- accepted
  Croton boissieri Müll. Arg. -- accepted
  Croton boiteaui Leandri -- accepted
  Croton boivinianus (Baill.) Baill. -- accepted
  Croton bojerianus Baill. -- accepted
  Croton bolivarensis Croizat -- accepted
  Croton bondaensis Rusby -- accepted
  Croton bonianus Gagnep. -- accepted
  Croton bonplandianus Baill. -- accepted -- Bonpland's croton
  Croton boragatch Roxb. ex Wall. -- not accepted
  Croton borbensis Secco & P.E. Berry -- accepted
  Croton boregensis M.E. Jones -- not accepted
  Croton borhidii O. Muñiz -- accepted
  Croton borhidii ssp. baracoensis Borhidi & O. Muñiz -- accepted
  Croton borhidii ssp. borhidii O. Muñiz -- accepted
  Croton borneensis J.J. Sm. -- accepted
  Croton botryocarpus Croizat -- not accepted
  Croton boutonianus Müll. Arg. -- not accepted
  Croton brachiatus Mart. ex Baill. -- not accepted
  Croton brachybotryus Müll. Arg. -- not accepted
  Croton brachypus Airy Shaw -- accepted
  Croton brachytrichus Urb. -- accepted
  Croton bracteatus Lam. -- accepted
  Croton bractiferus Roxb. -- not accepted
  Croton brasiliensis Mart. ex Klotzsch -- not accepted
  Croton brasiliensis (Spreng.) Müll. Arg. -- not accepted
  Croton brassii Croizat -- accepted
  Croton breedlovei B.W. van Ee & P.E. Berry -- accepted
  Croton bresolinii L.B. Sm. & Downs -- accepted
  Croton brevifolius Andersson -- not accepted
  Croton brevipes Pax -- accepted
  Croton brevispicatus Baill. -- accepted
  Croton brevispicatus var. bocquillonii (Baill.) Leandri -- accepted
  Croton brevispicatus var. brevispicatus Baill. -- accepted
  Croton brevispicatus var. isalensis Leandri -- not accepted
  Croton bridgesii Müll. Arg. -- not accepted
  Croton brieyi De Wild. -- accepted
  Croton brittonianus Carabia -- accepted
  Croton brittonii Acev.-Rodr. -- accepted
  Croton brocchianus Vis. -- not accepted
  Croton bryophorus Croizat -- accepted
  Croton buchii Urb. -- accepted
  Croton budopensis Gagnep. -- not accepted
  Croton bukobensis Pax -- not accepted
  Croton burchellii Müll. Arg. -- accepted
  Croton butaguensis De Wild. -- not accepted
  Croton buxifolius (Baill.) Müll. Arg. -- not accepted
  Croton byrnesii Airy Shaw -- accepted
  Croton caboensis Croizat -- accepted
  Croton cajucara Benth. -- accepted
  Croton calcicola Ridl. -- not accepted
  Croton caldensis Müll. Arg. -- accepted
  Croton calderi Chakrab. & N.P. Balakr. -- accepted
  Croton californicus Müll. Arg. -- accepted -- California croton
  Croton californicus var. longipes (M.E. Jones) A.M. Ferguson -- not accepted -- California croton
  Croton californicus var. major S. Watson ex Engelm. -- not accepted
  Croton californicus var. mohavensis A.M. Ferguson -- not accepted -- Mojave croton
  Croton californicus var. tenuis (S. Watson) A.M. Ferguson -- not accepted -- California croton
  Croton callicarpifolius Vahl -- not accepted
  Croton callicarpifolius var. genuinus Müll. Arg. -- not accepted
  Croton callicarpifolius var. pubescens Müll. Arg. -- not accepted
  Croton calocephalus Müll. Arg. -- accepted
  Croton calococcus Kurz -- accepted
  Croton calomeris Baill. -- not accepted
  Croton calonervosus G.L. Webster -- accepted
  Croton calvescens S. Watson -- not accepted
  Croton calyciglandulosus Allem -- accepted
  Croton calycireduplicatus Allem -- accepted
  Croton camagueyanus Urb. -- not accepted
  Croton camaza Perr. -- not accepted
  Croton campanulatus Caruzo & Cordeiro -- accepted
  Croton campechianus Standl. -- not accepted
  Croton campenonii Baill. -- accepted
  Croton campestris A. St.-Hil. -- accepted
  Croton campestris var. angustifolius Müll. Arg. -- not accepted
  Croton campestris var. atratus Baill. -- not accepted
  Croton campestris var. dupraei Baill. -- not accepted
  Croton campestris var. genuinus Müll. Arg. -- not accepted
  Croton campestris var. grandivelus Baill. -- not accepted
  Croton campestris var. laetifolius (Baill.) Müll. Arg. -- not accepted
  Croton campestris var. nigricans Baill. -- not accepted
  Croton campestris var. subacutus Baill. -- not accepted
  Croton canescens Bojer -- not accepted
  Croton capensis L. f. -- not accepted
  Croton capitatus Michx. -- accepted -- doveweed, hogweed, woolly croton, capitate croton, hogwort
  Croton capitatus var. albinoides (A.M. Ferguson) Shinners -- not accepted
  Croton capitatus var. capitatus Michx. -- accepted -- hogwort
  Croton capitatus var. genuinus Müll. Arg. -- not accepted
  Croton capitis-york Airy Shaw -- accepted
  Croton capitis-york var. pilosus Airy Shaw -- not accepted
  Croton capuronii Leandri -- accepted
  Croton caracasanus Pittier -- accepted
  Croton carandaitensis Croizat -- accepted
  Croton cardenasii Standl. -- accepted
  Croton cardonei Croizat -- not accepted
  Croton carinatus Müll. Arg. -- accepted
  Croton carpostellatus B.L. León & Mart. Gord. -- accepted
  Croton carrieri Chantrier -- not accepted
  Croton carrii Airy Shaw -- accepted
  Croton caryocarpus Croizat -- accepted
  Croton caryophyllus Benth. -- accepted
  Croton casarettianus Vis. -- not accepted
  Croton casarettoanus Müll. Arg. -- not accepted
  Croton cascarilla Lam. -- not accepted
  Croton cascarilla (L.) L. -- not accepted -- grannybush
  Croton cascarilloides Raeusch. -- accepted
  Croton cascarilloides Geiseler -- not accepted
  Croton cascarilloides f. pilosus Y.T. Chang -- not accepted
  Croton cassinoides Lam. -- accepted
  Croton castaneifolius L. -- not accepted
  Croton castaneifolius Kunth -- not accepted
  Croton catamarcensis Ahumada -- accepted
  Croton catariae Baill. -- accepted
  Croton catati Baill. -- accepted
  Croton catharinensis L.B. Sm. & Downs -- accepted
  Croton catinganus Müll. Arg. -- accepted
  Croton caudatiformis Hand.-Mazz. -- not accepted
  Croton caudatus Geiseler -- accepted
  Croton caudatus var. denticulatus Müll. Arg. -- not accepted
  Croton caudatus var. genuinus Müll. Arg. -- not accepted
  Croton caudatus var. harmandii Gagnep. -- not accepted
  Croton caudatus var. klotzschianus (Wight) Müll. Arg. -- not accepted
  Croton caudatus var. malaccanus Hook. f. -- not accepted
  Croton caudatus var. oblongifolius Müll. Arg. -- not accepted
  Croton caudatus var. obovoideus N.P. Balakr. & Chakrab. -- not accepted
  Croton cavaleriei Gagnep. -- not accepted
  Croton cavalliensis Beille ex Hutch. -- not accepted
  Croton ceanothifolius Baill. -- accepted
  Croton ceanothifolius Standl. & L.O. Williams -- not accepted
  Croton ceanothifolius var. itabirensis Baill. -- not accepted
  Croton cearensis Baill. -- accepted
  Croton cearensis Müll. Arg. -- not accepted
  Croton celtidifolius Baill. -- accepted
  Croton cerinodentatus Müll. Arg. -- accepted
  Croton cerinodentatus var. martii Müll. Arg. -- not accepted
  Croton cerinodentatus var. warmingii Müll. Arg. -- not accepted
  Croton cerinus Müll. Arg. -- accepted
  Croton cerinus var. linifolius Müll. Arg. -- not accepted
  Croton cerroazulensis P.E. Berry & Galdames -- accepted
  Croton chaetodus Urb. -- not accepted
  Croton chaetophorus Müll. Arg. -- accepted
  Croton chamaedrifolius (Klotzsch) Griseb. -- not accepted
  Croton chamaedrifolius Lam. -- not accepted
  Croton chamaepitys Baill. -- accepted
  Croton chamelensis E.J. Lott -- accepted
  Croton chapelieri Baill. -- accepted
  Croton charaguensis Standl. -- accepted
  Croton chauvetiae Leandri -- accepted
  Croton chevalieri Beille -- not accepted
  Croton chiamala Wall. -- not accepted
  Croton chiapensis Lundell -- accepted
  Croton chilensis Müll. Arg. -- accepted
  Croton chimboracensis P.E. Berry & Riina -- accepted
  Croton chinensis Geiseler -- not accepted
  Croton chinensis Benth. -- not accepted
  Croton chiribiquetensis Cardiel -- accepted
  Croton chittagongensis Chakrab. & N.P. Balakr. -- accepted
  Croton chlaenacicomes Leandri -- accepted
  Croton chlorocalyx Müll. Arg. -- accepted
  Croton chloroleucus Müll. Arg. -- accepted
  Croton chocoanus Croizat -- accepted
  Croton choristadenius K. Schum. -- accepted
  Croton choristolepis Müll. Arg. -- not accepted
  Croton chrysocladus Müll. Arg. -- accepted
  Croton chrysodaphne Baill. -- accepted
  Croton chunianus Croizat -- accepted
  Croton churumayensis Croizat -- accepted
  Croton churutensis Riina & X. Cornejo -- accepted -- Sangre de drago, Chalá grande
  Croton chypreae Leandri -- accepted
  Croton ciliatoglandulifer Ortega -- accepted -- bush croton, Mexican croton
  Croton ciliatoglandulosus Steud. -- not accepted
  Croton cinerascens Radcl.-Sm. & Govaerts -- accepted
  Croton cinerellus Müll. Arg. -- accepted
  Croton claessensii Vermoesen ex De Wild. -- accepted
  Croton claraensis Urb. -- not accepted
  Croton claussenianus Baill. -- accepted
  Croton claussenianus var. hirsutus Müll. Arg. -- not accepted
  Croton claussenianus var. latifolius Müll. Arg. -- not accepted
  Croton claussenianus var. tomentellus Müll. Arg. -- not accepted
  Croton clavuliger Müll. Arg. -- accepted
  Croton cliffordii Hutch. & E.A. Bruce -- accepted
  Croton clutioides G. Forst. -- not accepted
  Croton cneorifolius (Baill.) Müll. Arg. -- not accepted
  Croton cneorifolius var. genuinus Müll. Arg. -- not accepted
  Croton cneorifolius var. lanceolatus (Baill.) Müll. Arg. -- not accepted
  Croton cneorifolius var. longifolius (Baill.) Müll. Arg. -- not accepted
  Croton cnidophyllus Radcl.-Sm. & Govaerts -- accepted
  Croton cnidophyllus var. dui (Y.T. Chang) Radcl.-Sm. & Govaerts -- not accepted
  Croton coatepensis Brandegee -- not accepted
  Croton coccineus Noronha -- accepted
  Croton coccineus Vahl -- not accepted
  Croton coccymelophyllus Radcl.-Sm. & Govaerts -- accepted
  Croton codonocalyx Baill. -- not accepted
  Croton coelebogyne Baill. -- not accepted
  Croton collenettei Hutch. & Dalziel -- not accepted
  Croton colliguaja Spreng. -- not accepted
  Croton collinus Kunth -- not accepted
  Croton collinus Pancher ex Baill. -- not accepted
  Croton colobocarpus Airy Shaw -- not accepted
  Croton colubrinoides Merr. -- accepted
  Croton columnaris Airy Shaw -- accepted
  Croton comayaguanus Standl. & L.O. Williams -- accepted
  Croton comes Standl. & L.O. Williams -- accepted
  Croton comosus Müll. Arg. -- not accepted
  Croton comosus var. major Müll. Arg. -- not accepted
  Croton comosus var. minor Müll. Arg. -- not accepted
  Croton compressus Lam. -- accepted
  Croton conduplicatus Kunth -- accepted
  Croton confertus Baker -- accepted
  Croton confinis L.B. Sm. & Downs -- accepted
  Croton confusus Pittier -- not accepted
  Croton confusus Gage -- not accepted
  Croton congensis De Wild. -- accepted
  Croton congestus Lour. -- accepted
  Croton consanguineus Müll. Arg. -- accepted
  Croton consanguineus var. molliusculus Croizat -- not accepted
  Croton conspurcatus Schltdl. -- accepted
  Croton cooperianus (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton corallicola Borhidi -- accepted
  Croton corchorifolius Geiseler -- not accepted
  Croton corchoropsis Baill. -- accepted
  Croton cordatulus Airy Shaw -- accepted
  Croton cordatus Vell. -- not accepted
  Croton cordeiroae G.L. Webster -- accepted
  Croton cordiifolius Baill. -- accepted
  Croton cordobensis Ahumada -- accepted
  Croton coriaceus Kunth -- accepted
  Croton coriifolius Airy Shaw -- accepted
  Croton corinthius Poveda & J.A. Gonzalez -- accepted
  Croton cornutus André -- not accepted
  Croton corollatus Sol. ex Baill. -- not accepted
  Croton coronatus Urb. -- accepted
  Croton corrientesianus Baill. -- not accepted
  Croton cortesianus Kunth -- accepted -- Cortez's croton
  Croton corumbensis S. Moore -- accepted
  Croton coryi Croizat -- accepted -- Cory's croton
  Croton corylifolius Lam. -- accepted
  Croton corylifolius Griseb. -- not accepted
  Croton corymbulosoides Radcl.-Sm. & Govaerts -- not accepted
  Croton corymbulosus Engelm. -- not accepted
  Croton corymbulosus var. thermophilus M.C. Johnst. -- not accepted
  Croton costaricensis Pax ex Durand & Pittier -- not accepted
  Croton costaricensis Kuntze -- not accepted
  Croton costatus Kunth -- accepted
  Croton cotabatensis Croizat -- accepted
  Croton cotoneaster Müll. Arg. -- accepted
  Croton courteti Beille -- not accepted
  Croton craspedotrichus Griseb. -- accepted
  Croton crassifolius Geiseler -- accepted
  Croton crassirameus Müll. Arg. -- not accepted
  Croton cremostachyus Baill. -- not accepted
  Croton crenulatus M.E. Jones -- not accepted
  Croton crispatus Thulin -- accepted
  Croton cristalensis Urb. -- accepted
  Croton crocodilorum Leandri -- accepted
  Croton crozophoroides Kurz -- not accepted
  Croton crustulifer Croizat -- accepted
  Croton cubanus Müll. Arg. -- not accepted
  Croton cubiensis Gagnep. -- accepted
  Croton cuchillae-nigrae Croizat -- accepted
  Croton cucutensis Croizat -- accepted
  Croton cueroensis Britton & P. Wilson -- not accepted
  Croton culiacanensis Croizat -- accepted
  Croton cumingii Müll. Arg. -- not accepted
  Croton cumingii var. angustifolius Gangnep. -- not accepted
  Croton cuneatus Klotzsch -- accepted
  Croton cuneatus Miq. -- not accepted
  Croton cupreatus Croizat -- accepted
  Croton cupreus Elmer -- accepted
  Croton cupulifer McVaugh -- accepted
  Croton curiosus Croizat -- accepted
  Croton curranii S.F. Blake -- accepted
  Croton curuguatyensis Ahumada -- accepted
  Croton curvipes Urb. -- accepted
  Croton cuyabensis Pilg. -- accepted
  Croton cyathodenus Desv. ex Lanj. -- not accepted
  Croton cycloideus Borhidi & O. Muñiz -- accepted
  Croton cynanchicus Baill. -- not accepted
  Croton damayeshu Y.T. Chang -- accepted
  Croton danguyanus Leandri -- accepted
  Croton daphnargyreus St.-Lag. -- not accepted
  Croton decalobus Müll. Arg. -- accepted
  Croton decalvatus Esser -- accepted
  Croton decaryi Leandri -- accepted
  Croton decipiens Baill. -- accepted
  Croton decorsei Beille -- not accepted
  Croton delphinianus Baill. -- not accepted
  Croton delpyi Gagnep. -- accepted
  Croton denisii Leandri -- accepted
  Croton densivestitus C.T. White & W.D. Francis -- accepted
  Croton dentatus Sm. -- not accepted
  Croton denticulatus Geiseler -- not accepted
  Croton denticulatus Blume -- not accepted
  Croton dentifolius Baill. -- not accepted
  Croton dentosus Griseb. -- not accepted
  Croton denudatus Baill. -- not accepted
  Croton deppeanus Steud. -- not accepted
  Croton deserticola Steyerm. -- accepted
  Croton desertorum Müll. Arg. -- accepted
  Croton diadenus Miq. -- not accepted
  Croton diasii Pires ex R. Secco & P.E. Berry -- accepted
  Croton dibindi Pellegr. -- accepted
  Croton dichogamus Pax -- accepted
  Croton dichotomus (Klotzsch) Müll. Arg. -- not accepted
  Croton dichotomus Willd. -- not accepted
  Croton dichrous Müll. Arg. -- accepted
  Croton dictyophlebodes Radcl.-Sm. -- accepted
  Croton didrichsenii G.L. Webster -- accepted
  Croton diffusus Geiseler -- not accepted
  Croton digitatus Fisch. ex Steud. -- not accepted
  Croton digitatus Salzm. ex Schltdl. -- not accepted
  Croton digitatus G. Don -- not accepted
  Croton digitifolius Baill. -- not accepted
  Croton dinklagei Pax & K. Hoffm. -- not accepted
  Croton dioicus Cav. -- accepted -- grassland croton
  Croton dioicus Willd. -- not accepted
  Croton dioicus Sessé & Moç. -- not accepted
  Croton dioicus Isert ex Geiseler -- not accepted
  Croton discolor Willd. -- accepted -- lechecillo
  Croton discolor C. Wright ex Griseb. -- not accepted
  Croton disjunctiflorus Michx. -- not accepted
  Croton disjunctus V.W. Steinm. -- accepted
  Croton dispar N.E. Br. -- accepted
  Croton dissectistipulatus Secco -- accepted
  Croton dissimilis Baill. -- not accepted
  Croton distans Wall. -- not accepted
  Croton divaricatus Sw. -- not accepted
  Croton divaricatus Leandri -- not accepted
  Croton dockrillii Airy Shaw -- accepted
  Croton doctoris S. Moore -- accepted
  Croton dodecamerus Gagnep. -- accepted
  Croton domatifer Riina & P.E. Berry -- accepted
  Croton domingensis Vahl ex Geiseler -- not accepted
  Croton domingensis A. Rich. -- not accepted
  Croton dongnaiensis Pierre ex Gagnep. -- accepted
  Croton doratophylloides (Croizat) G.L. Webster -- accepted
  Croton doratophyllus Baill. -- accepted
  Croton draco Schltdl. & Cham. -- accepted
  Croton draco ssp. panamensis (Klotzsch) G.L. Webster -- not accepted
  Croton draco var. cordatus Müll. Arg. -- not accepted
  Croton draco var. genuinus Müll. Arg. -- not accepted
  Croton draco var. hibisciformis Müll. Arg. -- not accepted
  Croton draco var. rhombifolius Müll. Arg. -- not accepted
  Croton draconoideus St.-Lag. -- not accepted
  Croton draconopsis Müll. Arg. -- accepted
  Croton dracunculoides Baill. -- accepted
  Croton drouetii Chantrier -- not accepted
  Croton drupaceus Roxb. -- not accepted
  Croton drupaceus Blanco -- not accepted
  Croton duclouxii Gagnep. -- not accepted
  Croton dusenii Croizat -- accepted
  Croton dussii Urb. -- accepted
  Croton duvalii Chantrier -- not accepted
  Croton dybowskii Hutch. -- accepted
  Croton eberhardtii Gagnep. -- accepted
  Croton echinocarpus Müll. Arg. -- accepted
  Croton echinocarpus Baill. -- not accepted
  Croton echinulatus (Griseb.) Croizat -- accepted
  Croton echioides Baill. -- accepted
  Croton eggersii Pax -- not accepted
  Croton ehrenbergii Schltdl. -- accepted
  Croton eichleri Müll. Arg. -- accepted
  Croton ekmanii Urb. -- accepted
  Croton elaeagni Baill. -- accepted
  Croton elaeagni var. antsingyensis Baill. -- not accepted
  Croton elaeagnifolius Vahl -- not accepted
  Croton elaeagnoides S. Watson -- not accepted
  Croton elaeocarpifolius Wall. -- not accepted
  Croton elbertii Airy Shaw -- accepted
  Croton elliotianus Baill. -- accepted
  Croton elliotianus Pax -- not accepted
  Croton elliottii Chapm. -- accepted -- pondshore croton, Elliott's croton
  Croton ellipticus Geiseler -- accepted
  Croton ellipticus Nutt. -- not accepted
  Croton ellipticus A. Rich. -- not accepted
  Croton elskensii De Wild. -- accepted
  Croton eluteria Benn. -- not accepted
  Croton eluteria (L.) W. Wright -- accepted
  Croton eluteria (L.) Sw. -- not accepted -- cascarilla
  Croton eluteria ssp. homolepidus (Müll. Arg.) Benn. -- not accepted
  Croton eluterioides Lotsy -- not accepted
  Croton emeliae Baill. -- accepted
  Croton emirnensis Baker -- not accepted
  Croton emporiorum Croizat -- accepted
  Croton enantiophyllus K. Schum. -- not accepted
  Croton engelmannii A.M. Ferguson -- not accepted
  Croton engelmannii var. albinoides A.M. Ferguson -- not accepted
  Croton ensifolius Merr. -- accepted
  Croton eremophilus Müll. Arg. -- accepted
  Croton eremophilus Wooton & Standl. -- not accepted
  Croton erianthus Sm. -- not accepted
  Croton ericius Leandri -- accepted
  Croton ericoides Baill. -- accepted
  Croton erioanthemus Sm. -- accepted
  Croton eriocladoides Müll. Arg. -- accepted
  Croton eriocladus Müll. Arg. -- accepted
  Croton erythrochilus Müll. Arg. -- accepted
  Croton erythrochyloides Croizat -- accepted
  Croton erythrostachys Hook. f. -- accepted
  Croton erythrostachys var. erythrostachys Hook. f. -- accepted
  Croton erythrostachys var. muriculatus Chakrab. & N.P. Balakr. -- accepted
  Croton erythroxyloides Baill. -- accepted
  Croton erythroxyloides (Klotzsch) Müll. Arg. -- not accepted
  Croton erythroxyloides var. buxifolius Baill. -- not accepted
  Croton erythroxyloides var. cneorifolius Baill. -- not accepted
  Croton erythroxyloides var. longifolius Baill. -- not accepted
  Croton erythroxyloides var. sordidus Baill. -- not accepted
  Croton escathos Croizat -- not accepted
  Croton eskuchei Ahumada -- accepted
  Croton essequiboensis Klotzsch ex Benth. -- accepted
  Croton euryphyllus W.W. Sm. -- accepted
  Croton eutrigynus A. Gray -- not accepted
  Croton excisus Urb. -- accepted
  Croton fantzianus F. Seym. -- accepted
  Croton farinosus Lam. -- accepted
  Croton faroensis Secco -- accepted
  Croton fastuosus Baill. -- accepted
  Croton ferruginellus Müll. Arg. -- accepted
  Croton ferrugineus Kunth -- accepted
  Croton ferrugineus var. collinus (Kunth) Müll. Arg. -- not accepted
  Croton ferrugineus var. elegans (Kunth) Müll. Arg. -- not accepted
  Croton ferrugineus var. genuinus Müll. Arg. -- not accepted
  Croton ferrugineus var. peltoideus (Kunth) Müll. Arg. -- not accepted
  Croton fianarantsoae Leandri -- accepted
  Croton fianarantsoae var. grandifolia Leandri -- not accepted
  Croton flabellifolius Lodd. ex G. Don -- not accepted
  Croton flavens L. -- accepted -- yellow balsam, yellow croton
  Croton flavens f. richardii Griseb. -- not accepted
  Croton flavens var. balsamifer (Jacq.) Müll. Arg. -- not accepted
  Croton flavens var. genuinus Müll. Arg. -- not accepted
  Croton flavens var. mucronatus (Willd.) Müll. Arg. -- not accepted
  Croton flavens var. pallidus Müll. Arg. -- not accepted
  Croton flavens var. rigidus Müll. Arg. -- not accepted
  Croton flavescens Greenm. -- accepted
  Croton flavescens var. brandegeanus Croizat -- not accepted
  Croton flaviglandulosus Lundell -- accepted
  Croton flavispicatus Rusby -- accepted
  Croton floccosus B.A. Sm. -- accepted
  Croton flocculosus Kurz -- not accepted
  Croton flocculosus Geiseler -- not accepted
  Croton floribundus Spreng. -- accepted
  Croton floribundus Lund ex Didr. -- not accepted
  Croton floribundus var. piauhyensis Rizzini -- not accepted
  Croton floridanus A.M. Ferguson -- not accepted
  Croton fluminensis K. Schum. -- accepted
  Croton foetens Anderson -- not accepted
  Croton fothergillifolius Baill. -- accepted
  Croton fragilis Kunth -- accepted
  Croton fragilis Schltdl. -- not accepted
  Croton fragilis var. genuinus Müll. Arg. -- not accepted
  Croton fragrans Kunth -- accepted
  Croton fragrantulus Croizat -- accepted
  Croton francavillanus Müll. Arg. -- not accepted
  Croton francoanus Müll. Arg. -- accepted
  Croton fraseri Müll. Arg. -- accepted
  Croton frieseanus Müll. Arg. -- accepted
  Croton fruticosus Mill. -- not accepted
  Croton fruticulosus Torr. -- accepted -- shrubby croton, hierba loca, encinilla, bush croton
  Croton fruticulosus var. fuscescens Müll. Arg. -- not accepted
  Croton fruticulosus var. pallescens Müll. Arg. -- not accepted
  Croton fuertesii Urb. -- not accepted
  Croton fulvus Mart. -- accepted
  Croton fulvus A. Rich. -- not accepted
  Croton funckianus Müll. Arg. -- not accepted
  Croton funckianus var. hibisciformis Müll. Arg. -- not accepted
  Croton funckianus var. rhombifolius Müll. Arg. -- not accepted
  Croton furfuraceus Pers. -- not accepted
  Croton fuscescens Spreng. -- accepted
  Croton fuscirameus Baill. -- not accepted
  Croton fuscus (Didr.) Müll. Arg. -- accepted
  Croton fuscus var. genuinus Müll. Arg. -- not accepted
  Croton fuscus var. leucadenius (Baill.) Müll. Arg. -- not accepted
  Croton gageanus P.T. Li -- accepted
  Croton galeopsifolius Lanj. -- accepted
  Croton galeottianus Baill. -- not accepted
  Croton garckeanus Baill. -- accepted
  Croton garckeanus var. abortivus Baill. -- not accepted
  Croton garckeanus var. genuinus Baill. -- not accepted
  Croton garckeanus var. major Baill. -- not accepted
  Croton gardneri Müll. Arg. -- not accepted
  Croton gardneri var. cordatus Müll. Arg. -- not accepted
  Croton gardneri var. lanceolatus Müll. Arg. -- not accepted
  Croton gardnerianus Baill. -- accepted
  Croton gaudichaudii Baill. -- not accepted
  Croton geayi Leandri -- accepted
  Croton geayi var. androiensis Leandri -- not accepted
  Croton geraesensis (Baill.) G.L. Webster -- accepted
  Croton gibsonianus Nimmo -- accepted
  Croton gibsonii J. Graham -- not accepted
  Croton gilgianus Herter ex Arechav. -- accepted
  Croton glabellus L. -- accepted
  Croton glabellus ssp. glabellus L. -- accepted
  Croton glabellus ssp. polytrichus (Urb.) B.W. van Ee -- accepted
  Croton glabrescens Miq. -- accepted
  Croton glandulifer Vahl ex Geiseler -- not accepted
  Croton glandulosepalus Millsp. -- accepted
  Croton glandulosobracteatus Carn.-Torres & Cordeiro -- accepted
  Croton glandulosodentatus Pax & K. Hoffm. -- accepted
  Croton glandulosus L. -- accepted -- tropic croton, tooth-leaved croton, sand croton, vente conmigo
  Croton glandulosus Blanco -- not accepted
  Croton glandulosus Vell. -- not accepted
  Croton glandulosus ssp. hirtus (L'Hér.) Croizat -- not accepted
  Croton glandulosus var. adenodontus Müll. Arg. -- not accepted
  Croton glandulosus var. angustifolius Müll. Arg. -- not accepted -- vente conmigo
  Croton glandulosus var. arenicola (Small) B.W. van Ee & P.E. Berry -- accepted -- vente conmigo
  Croton glandulosus var. crenatifolius A.M. Ferguson -- not accepted
  Croton glandulosus var. divaricatus (Sw.) Müll. Arg. -- not accepted
  Croton glandulosus var. floridanus (A.M. Ferguson) R.W. Long -- accepted -- vente conmigo
  Croton glandulosus var. gardneri Müll. Arg. -- not accepted
  Croton glandulosus var. genuinus Müll. Arg. -- not accepted
  Croton glandulosus var. glandulosus L. -- accepted -- vente conmigo
  Croton glandulosus var. hirtus (L'Hér.) Müll. Arg. -- not accepted
  Croton glandulosus var. intermedius Müll. Arg. -- not accepted
  Croton glandulosus var. lindheimeri Müll. Arg. -- not accepted -- Lindheimer's croton, tropic croton
  Croton glandulosus var. lundianus (F. Diedrichsen) L.B. Sm. & Downs -- not accepted
  Croton glandulosus var. martii Müll. Arg. -- not accepted
  Croton glandulosus var. occidentalis Müll. Arg. -- not accepted
  Croton glandulosus var. parviseminus Croizat -- not accepted
  Croton glandulosus var. pubentissimus Croizat -- not accepted -- vente conmigo
  Croton glandulosus var. sagotii Müll. Arg. -- not accepted
  Croton glandulosus var. schomburgkianus Müll. Arg. -- not accepted
  Croton glandulosus var. scordioides (Lam.) Müll. Arg. -- not accepted
  Croton glandulosus var. septentrionalis Müll. Arg. -- not accepted -- vente conmigo
  Croton glandulosus var. shortii A.M. Ferguson -- not accepted
  Croton glandulosus var. sieberi Müll. Arg. -- not accepted
  Croton glandulosus var. simpsonii A.M. Ferguson -- not accepted -- Simpson's croton
  Croton glandulosus var. subincanus Müll. Arg. -- not accepted
  Croton glandulosus var. tenellus Müll. Arg. -- not accepted
  Croton glandulosus var. warmingii Müll. Arg. -- not accepted
  Croton glechomifolius Müll. Arg. -- accepted
  Croton globosus Sw. -- not accepted
  Croton glomeratus Aug. DC. -- accepted
  Croton glutinosus Müll. Arg. -- accepted
  Croton glycosmeus Müll. Arg. -- not accepted
  Croton glyptospermus Müll. Arg. -- accepted
  Croton gnaphalii Baill. -- accepted
  Croton gnaphaloides Schrad. -- accepted
  Croton gnidiaceus Baill. -- accepted
  Croton gomezii G.L. Webster -- accepted
  Croton gonocladus Mart. -- not accepted
  Croton gonzalezii Greenm. -- not accepted
  Croton gossweileri Hutch. -- accepted
  Croton gossypiifolius Vahl -- accepted
  Croton gossypiifolius var. genuinus Müll. Arg. -- not accepted
  Croton gossypiifolius var. heterophyllus (Kunth) Müll. Arg. -- not accepted
  Croton gossypiifolius var. hibiscifolius (Kunth) Müll. Arg. -- not accepted
  Croton gossypiifolius var. stipularis Müll. Arg. -- not accepted
  Croton goudotii Baill. -- accepted
  Croton goyazensis Müll. Arg. -- accepted
  Croton gracilescens Müll. Arg. -- accepted
  Croton gracilipes Baill. -- accepted
  Croton gracilipes var. angustifolius Müll. Arg. -- not accepted
  Croton gracilipes var. genuinus Müll. Arg. -- not accepted
  Croton gracilipes var. macradenius Müll. Arg. -- not accepted
  Croton gracilis Kunth -- not accepted
  Croton gracilis var. genuinus Kunth -- not accepted
  Croton gracilis var. longiradiatus Kunth -- not accepted
  Croton grandifolius Blanco -- not accepted
  Croton grandifructus Radcl.-Sm. & Govaerts -- accepted
  Croton grandivelum Baill. -- accepted
  Croton grandivelus var. algernonii Müll. Arg. -- not accepted
  Croton grandivelus var. augustinianus Müll. Arg. -- not accepted
  Croton grandivelus var. cremostachyus Müll. Arg. -- not accepted
  Croton grandivelus var. echinocarpus Müll. Arg. -- not accepted
  Croton grandivelus var. genuinus Müll. Arg. -- not accepted
  Croton grandivelus var. neuwiedii Müll. Arg. -- not accepted
  Croton grandivelus var. pannosus Müll. Arg. -- not accepted
  Croton grangerioides Bojer ex Baill. -- accepted
  Croton gratissimus Burch. -- accepted
  Croton gratissimus var. gratissimus Burch. -- accepted
  Croton gratissimus var. subgratissimus (Prain) Burtt Davy -- accepted
  Croton grazielae Secco -- accepted
  Croton greveanus Baill. -- accepted
  Croton greveanus var. borealis Leandri -- not accepted
  Croton grewiifolius Müll. Arg. -- accepted
  Croton grewioides Baill. -- accepted
  Croton griffithii Hook. f. -- accepted
  Croton grisebachianus Müll. Arg. -- accepted
  Croton griseus Airy Shaw -- accepted
  Croton grossedentatus Pittier -- accepted
  Croton grosseri Pax -- not accepted
  Croton guaiquinimae Steyerm. -- accepted
  Croton guaraniticus Chodat & Hassl. -- not accepted
  Croton guatemalensis Lotsy -- accepted -- copalchi
  Croton gubouga S. Moore -- not accepted
  Croton guerelae Leandri -- accepted
  Croton guerreroanus Mart. Gord. & Cruz Durán -- accepted
  Croton guerzesiensis Beille -- not accepted
  Croton guerzesiensis Beille ex A. Chev. -- not accepted
  Croton guianensis Aubl. -- accepted
  Croton guildingii Griseb. -- accepted
  Croton guildingii ssp. guildingii Griseb. -- accepted
  Croton guildingii ssp. tiarensis P.E. Berry & Riina -- accepted
  Croton guildingioides Radcl.-Sm. & Govaerts -- not accepted
  Croton guilleminianus Baill. -- accepted
  Croton gummiferus A. Cunn. ex Planch. -- not accepted
  Croton gynopetalus Croizat -- accepted
  Croton habrophyllus Airy Shaw -- accepted
  Croton hadrianii Baill. -- accepted
  Croton hainanensis Merr. & Metcalf -- not accepted
  Croton haitiensis P.T. Li -- accepted
  Croton halecum Roxb. -- not accepted
  Croton hancei Benth. -- accepted
  Croton harleyi Carn.-Torres & Cordeiro -- accepted
  Croton hasskarlianus Müll. Arg. -- accepted
  Croton hastatus Burm. f. -- not accepted
  Croton hastatus L. -- not accepted
  Croton hastiferus Linden & André -- not accepted
  Croton haumanianus J. Léonard -- accepted
  Croton hauthalii (Kuntze) K. Schum. -- not accepted
  Croton heliaster S.F. Blake -- accepted
  Croton helichrysum Baill. -- accepted
  Croton heliotropiifolius Kunth -- accepted
  Croton hemiargyreus Müll. Arg. -- accepted
  Croton hemiargyreus var. genuinus Müll. Arg. -- not accepted
  Croton hemiargyreus var. gymnodiscus Müll. Arg. -- not accepted
  Croton hentyi Airy Shaw -- accepted
  Croton heptalon (Kuntze) B.W. van Ee & P.E. Berry -- accepted -- woolly croton
  Croton herbaceus Vell. -- not accepted
  Croton herteri Arechav. -- not accepted
  Croton herzogianus (Pax & K. Hoffm.) Radcl.-Sm. & Govaerts -- accepted
  Croton heteranthus Aug. DC. -- accepted
  Croton heterocalyx Baill. -- accepted
  Croton heterocarpus Müll. Arg. -- accepted
  Croton heterochrous Müll. Arg. -- accepted
  Croton heterochrous Baill. -- not accepted
  Croton heterodoxus Baill. -- accepted
  Croton heterolepis (Urb.) Borhidi & O. Muñiz -- not accepted
  Croton heterophyllus Kunth -- not accepted
  Croton heteropleurus Urb. -- not accepted
  Croton heterotrichus Müll. Arg. -- accepted
  Croton hibiscifolius Kunth ex Spreng. -- accepted
  Croton hieronymi Griseb. -- accepted
  Croton hieronymoides Müll. Arg. -- not accepted
  Croton hilarii Baill. -- accepted
  Croton hilaris Baill. -- not accepted
  Croton hildebrandtii Baill. -- accepted
  Croton hillianus Veitch -- not accepted
  Croton hippophaeoides A. Rich. -- not accepted
  Croton hircinus Vent. -- accepted
  Croton hirsutus Vell. -- not accepted
  Croton hirsutus Thouars ex Baill. -- not accepted
  Croton hirtus L'Her. -- accepted
  Croton hispidus Kunth -- not accepted
  Croton hoffmannii Müll. Arg. -- accepted
  Croton hoffmannii var. viridis Müll. Arg. -- not accepted
  Croton holguinensis Borhidi -- accepted
  Croton holodiscus (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton holtonii Müll. Arg. -- accepted
  Croton homolepidus Müll. Arg. -- not accepted
  Croton hondensis (H. Karst.) G.L. Webster -- accepted
  Croton hookeri André -- not accepted
  Croton hookeri Croizat -- not accepted
  Croton hookerianus Baill. -- not accepted
  Croton horminoideus St.-Lag. -- not accepted
  Croton horminum Baill. -- accepted
  Croton horridulus (Baill.) Müll. Arg. -- not accepted
  Croton horridulus Baill. -- not accepted
  Croton hostmannii Miq. ex Schltdl. -- accepted
  Croton hovarum Leandri -- accepted
  Croton howii Merr. & Chun ex Y.T. Chang -- accepted
  Croton huajuapanensis Mart. Gord. & Cruz Durán -- accepted
  Croton huberi Steyerm. -- accepted
  Croton huitotorum Croizat -- accepted
  Croton humbertii Leandri -- accepted
  Croton humblotii Baill. -- accepted
  Croton humblotii var. anjuanensis Leandri -- not accepted
  Croton humilis L. -- accepted -- low croton, pepperbush
  Croton humilis var. origanifolius Didr. -- not accepted
  Croton hutchinsonianus Hosseus -- accepted
  Croton hypochalibaeum Baill. -- not accepted
  Croton hypoleucus Schltdl. -- accepted
  Croton hypoleucus Dalzell -- not accepted
  Croton icabarui Jabl. -- accepted
  Croton icche Lundell -- accepted
  Croton ichthygaster L.B. Sm. & Downs -- accepted
  Croton ignifex Croizat -- accepted
  Croton ihosiana Leandri -- accepted
  Croton ikopae Leandri -- accepted
  Croton imbricatus L.R. Lima & Pirani -- accepted
  Croton imperialis T. Moore -- not accepted
  Croton impetiginosus Poepp. ex Baill. -- not accepted
  Croton impressus Urb. -- accepted -- Puerto Rico croton
  Croton inaequidens Urb. -- not accepted
  Croton inaequilobus Steyerm. -- accepted
  Croton incanus Kunth -- accepted -- vara blanca, Torrey's croton
  Croton incanus Blume -- not accepted
  Croton incanus Andersson -- not accepted
  Croton incanus Blume ex Baill. -- not accepted
  Croton incanus var. microphyllus Andersson -- not accepted
  Croton incertus Müll. Arg. -- accepted
  Croton incisus Baill. -- accepted
  Croton incrustatus Urb. -- not accepted
  Croton indivisus Vell. -- accepted
  Croton inhambanensis Radcl.-Sm. -- accepted
  Croton inophyllus G. Forst. -- not accepted
  Croton inops Baill. -- accepted
  Croton insularis Baill. -- accepted
  Croton insularis var. genuinus Müll. Arg. -- not accepted
  Croton insularis var. parvifolius Müll. Arg. -- not accepted
  Croton integer (Chodat) Radcl.-Sm. & Govaerts -- accepted
  Croton integrifolius Pax -- accepted
  Croton integrilobus Croizat -- accepted
  Croton intercedens Müll. Arg. -- accepted
  Croton interruptus André -- not accepted
  Croton inversus Baill. -- not accepted
  Croton inversus Glaz. -- not accepted
  Croton irregularis André -- not accepted
  Croton isabelli Baill. -- accepted
  Croton isalensis (Leandri) Leandri -- not accepted
  Croton isertii Griseb. -- not accepted
  Croton isomonensis Leandri -- accepted
  Croton itabirensis Baill. -- not accepted
  Croton iteophyllus Radcl.-Sm. & Govaerts -- accepted
  Croton itzaeus Lundell -- accepted
  Croton ivohibensis Leandri -- accepted
  Croton jacmelianus Urb. -- accepted
  Croton jacobinensis Baill. -- accepted
  Croton jacobinensis Müll. Arg. -- not accepted
  Croton jaegerianus Müll. Arg. -- not accepted
  Croton jamaicensis B.W. van Ee & P.E. Berry -- accepted
  Croton jamalgota Buch.-Ham. -- not accepted
  Croton jamesonii Müll. Arg. -- accepted
  Croton janeirensis Radcl.-Sm. & Govaerts -- accepted
  Croton jansii J. Léonard -- accepted
  Croton japirensis Müll. Arg. -- accepted
  Croton japonicus L. f. -- not accepted
  Croton jatropha Müll. Arg. -- not accepted
  Croton jatrophifolius Müll. Arg. -- accepted
  Croton jatrophoides Pax -- accepted
  Croton jaucoensis Borhidi -- accepted
  Croton javarisensis Secco -- accepted
  Croton jennyanus Griseb. ex Baill. -- accepted
  Croton jimenezii Standl. & Valerio -- accepted
  Croton johannis Veitch ex Regel -- not accepted
  Croton jorgei J. Murillo -- accepted
  Croton josephinus Müll. Arg. -- accepted
  Croton joufra Roxb. -- accepted
  Croton jucundus Brandegee -- accepted
  Croton julopsidium Baill. -- accepted
  Croton junceus Baill. -- accepted
  Croton jutiapensis Croizat -- accepted
  Croton kaieteuri Jabl. -- not accepted
  Croton kalkmannii Müll. Arg. -- accepted
  Croton kamerunicus Pax & K. Hoffm. -- not accepted
  Croton katoae Croizat -- accepted
  Croton kelantanicus Airy Shaw -- accepted
  Croton kenskoflii Urb. -- not accepted
  Croton kerrii Airy Shaw -- accepted
  Croton killipianus Croizat -- accepted
  Croton kilwae Radcl.-Sm. -- accepted
  Croton kimosorum Leandri -- accepted
  Croton klaenzei Müll. Arg. -- accepted
  Croton kleinii L.B. Sm. & Downs -- accepted
  Croton klotzschianus (Wight) Thwaites -- accepted
  Croton klotzschii Baill. -- not accepted
  Croton klotzschii f. divaricatus Müll. Arg. -- not accepted
  Croton klotzschii f. genuinus Müll. Arg. -- not accepted
  Croton klotzschii f. major (Didr.) Baill. -- not accepted
  Croton klotzschii f. minor (Didr.) Baill. -- not accepted
  Croton klotzschii f. prunifolius (Didr.) Baill. -- not accepted
  Croton klotzschii var. bahiensis Baill. -- not accepted
  Croton klotzschii var. hilarii (Didr.) Baill. -- not accepted
  Croton klotzschii var. incanus (Didr.) Baill. -- not accepted
  Croton klotzschii var. intermedius (Didr.) Baill. -- not accepted
  Croton klotzschii var. latifolius (Didr.) Baill. -- not accepted
  Croton klotzschii var. microphyllus (Didr.) Baill. -- not accepted
  Croton klotzschii var. oblongifolius (Didr.) Baill. -- not accepted
  Croton koehneanus Urb. -- not accepted
  Croton kongensis Gagnep. -- accepted
  Croton kongkandanus Esser -- accepted
  Croton korthalsii Müll. Arg. -- not accepted
  Croton krabas Gagnep. -- accepted
  Croton kroneanus Miq. -- not accepted
  Croton krugianus Urb. -- not accepted
  Croton krukoffianus Croizat -- accepted
  Croton kurzii Croizat -- accepted
  Croton kwangsiensis Croizat -- not accepted
  Croton kwebensis N.E. Br. -- not accepted
  Croton laccifer L. -- accepted
  Croton lacciferus Blanco -- not accepted
  Croton laceratoglandulosus Caruzo & Cordeiro -- accepted
  Croton lachnocarpus Benth. -- accepted
  Croton lachnocladus Mart. ex Müll. Arg. -- accepted
  Croton lachnostachyus Baill. -- accepted
  Croton lachnostephanus Baill. -- accepted
  Croton laciniatistylus J. Léonard -- accepted
  Croton lacteus Van Houtte -- not accepted
  Croton laeticapsulus Croizat -- accepted
  Croton laetifolius Baill. -- not accepted
  Croton laetus Wall. -- not accepted
  Croton laevifolius Blume -- not accepted
  Croton laevifolius Hook. f. -- not accepted
  Croton laevigatus Vahl -- accepted
  Croton lagoensis Müll. Arg. -- accepted
  Croton lagunensis M.E. Jones -- not accepted
  Croton lagunillae Croizat -- not accepted
  Croton lamarckianus Moldenke -- not accepted
  Croton lamdongensis Thin -- accepted
  Croton lamianus Leandri -- accepted
  Croton lanatus Lam. -- accepted
  Croton lanatus Klotzsch ex Baill. -- not accepted
  Croton lanatus Lour. -- not accepted
  Croton lanatus var. astrogynus (Baill.) P.E. Berry -- accepted
  Croton lanatus var. lanatus Lam. -- accepted
  Croton lanatus var. lorentzii (Müll. Arg.) P.E. Berry -- accepted
  Croton lanceilimbus Merr. -- accepted
  Croton lanceolaris G.L. Webster -- accepted
  Croton lanceolatus Cav. -- not accepted
  Croton lanceolatus Hornem. ex Didr. -- not accepted
  Croton landoltii Ahumada -- accepted
  Croton langsdorffii Müll. Arg. -- accepted
  Croton langsonensis Thin -- accepted
  Croton laniflorus Geiseler -- accepted
  Croton lanigerus (Prain) Perr. ex Prain -- not accepted
  Croton lanjouwensis Jabl. -- not accepted
  Croton lanuginosus K. Schum. ex Schweinf. -- not accepted
  Croton lanuginosus Baill. -- not accepted
  Croton laoticus Gagnep. -- accepted
  Croton lapanus Müll. Arg. -- accepted
  Croton lapiazicola Leandri -- accepted
  Croton lapiazicola var. lapiazicola Leandri -- accepted
  Croton lapiazicola var. longibracteata Leandri -- accepted
  Croton lasianthus Pers. -- not accepted
  Croton lasiopetaloides Croizat -- accepted
  Croton lasiopyrus Baill. -- accepted
  Croton latimaculatus Chantrier -- not accepted
  Croton latsonensis Gagnep. -- accepted
  Croton laui Merr. & Metcalf -- accepted
  Croton lauioides Radcl.-Sm. & Govaerts -- accepted
  Croton laureltyanus Ahumada -- accepted
  Croton laurifolius Müll. Arg. -- not accepted
  Croton laurifolius Spach ex Baill. -- not accepted
  Croton laurifolius Noronha -- not accepted
  Croton laurinus Sw. -- accepted
  Croton lawianus Nimmo -- accepted
  Croton leandrii Croizat -- accepted
  Croton lechleri Müll. Arg. -- accepted
  Croton lehmannii Pax -- accepted
  Croton lehmbachii Hutch. -- not accepted
  Croton leiocarpus Bartl. -- not accepted
  Croton leiophyllus Müll. Arg. -- accepted
  Croton leonensis Hutch. -- accepted
  Croton leonis (Croizat) B.W. van Ee & P.E. Berry -- accepted
  Croton lepidotus Aug. DC. -- accepted
  Croton lepidus (S. Moore) Radcl.-Sm. & Govaerts -- accepted
  Croton leprosus Spreng. ex Griseb. -- not accepted
  Croton leptanthus Airy Shaw -- accepted
  Croton leptobotryus Müll. Arg. -- accepted
  Croton leptophyllus Müll. Arg. -- accepted
  Croton leptopus Müll. Arg. -- accepted
  Croton leptostachyus Kunth -- accepted
  Croton leptostachyus var. genuinus Müll. Arg. -- not accepted
  Croton leptostachyus var. malacophyllus (Benth.) Müll. Arg. -- not accepted
  Croton leptostachyus var. spathulatus Müll. Arg. -- not accepted
  Croton leucadenius Baill. -- not accepted
  Croton leucocephalus Müll. Arg. -- not accepted
  Croton leuconeurus Pax -- accepted
  Croton leuconeurus ssp. leuconeurus Pax -- accepted
  Croton leuconeurus ssp. mossambicensis Radcl.-Sm. -- accepted
  Croton leucophlebius C. Wright ex Griseb. -- accepted
  Croton leucophyllus Müll. Arg. -- accepted -- twocolor croton
  Croton leucophyllus var. leucophyllus Müll. Arg. -- accepted -- twocolor croton
  Croton leucophyllus var. trisepalis A.M. Ferguson -- accepted
  Croton levatii Guillaumin -- accepted
  Croton leytensis Croizat -- accepted
  Croton lichenisilvae Leandri -- accepted
  Croton liebmannii Müll. Arg. -- accepted
  Croton limae A.P.S. Gomes, M.F. Sales & P.E. Berry -- accepted
  Croton limitincola Croizat -- not accepted
  Croton limnocharis Croizat -- accepted
  Croton lindenianus A. Rich. -- not accepted
  Croton lindheimeri (Engelm. & A. Gray) Alph. Wood -- accepted -- Lindheimer's hogwort
  Croton lindheimerianus Scheele -- accepted -- three-seed croton, threeseed croton
  Croton lindheimerianus var. lindheimerianus Scheele -- accepted -- threeseed croton, three-seed croton, Lindheimer's threeseed croton
  Croton lindheimerianus var. tharpii M.C. Johnst. -- accepted -- Tharp's croton, Tharp's threeseed croton
  Croton lindmanii Urb. -- accepted
  Croton linearifolius Müll. Arg. -- accepted
  Croton linearis Jacq. -- accepted -- pineland croton, grannybush
  Croton linifolius Urb. -- not accepted
  Croton lissophyllus Radcl.-Sm. & Govaerts ex Esser -- accepted
  Croton lithrifolius (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton litoralis Urb. -- not accepted
  Croton litoralis var. rugelianus (Urb.) Borhidi & O. Muñiz -- not accepted
  Croton lobatus L. -- not accepted -- lobed croton
  Croton lobatus f. crispus Müll. Arg. -- not accepted
  Croton lobatus f. gracilis Müll. Arg. -- not accepted
  Croton lobatus var. digitatus (Salzm. ex Schltdl.) Müll. Arg. -- not accepted
  Croton lobatus var. genuinus Müll. Arg. -- not accepted
  Croton lobatus var. gracilis (Müll. Arg.) Müll. Arg. -- not accepted
  Croton lobatus var. intermedius Müll. Arg. -- not accepted
  Croton lobatus var. manihot (Baill.) Müll. Arg. -- not accepted
  Croton lobatus var. palmatus Müll. Arg. -- not accepted
  Croton lobatus var. paulinus (Didr.) Müll. Arg. -- not accepted
  Croton lobatus var. riparius (Kunth) Müll. Arg. -- not accepted
  Croton lobatus var. seemannii L. -- not accepted
  Croton lobatus var. sericeus L. -- not accepted
  Croton lombardianus Croizat -- accepted
  Croton longibracteatus Mart. Gord. & de Luna -- accepted
  Croton longicolumellus B.W. van Ee & P.E. Berry -- accepted
  Croton longifolius Müll. Arg. -- accepted
  Croton longinervius Müll. Arg. -- accepted
  Croton longinervius var. major Müll. Arg. -- not accepted
  Croton longinervius var. minor Müll. Arg. -- not accepted
  Croton longipedicellatus J. Léonard -- accepted
  Croton longipedicellatus ssp. austrotanzanicus Radcl.-Sm. -- accepted
  Croton longipedicellatus ssp. longipedicellatus J. Léonard -- accepted
  Croton longipedicellatus var. brevipedicellatus Radcl.-Sm. -- accepted
  Croton longipedicellatus var. glabrescens Radcl.-Sm. -- accepted
  Croton longipedunculatus Elmer -- not accepted
  Croton longipes M.E. Jones -- not accepted
  Croton longipes Gagnep. -- not accepted
  Croton longiracemosus Hutch. -- accepted
  Croton longiradiatus Lanj. -- accepted
  Croton longissimus Airy Shaw -- accepted
  Croton lotorius Croizat -- accepted
  Croton loucoubensis Baill. -- not accepted
  Croton loukandensis Pellegr. -- accepted
  Croton louvelii Leandri -- accepted
  Croton luciae Croizat -- accepted
  Croton lucidus L. -- accepted -- firebush
  Croton lucidus Gage -- not accepted
  Croton luetzelburgii Pax & K. Hoffm. -- accepted
  Croton lundellii Standl. -- accepted
  Croton lundianus (Didr.) Müll. Arg. -- accepted
  Croton lundianus var. bahiensis (Baill.) Müll. Arg. -- not accepted
  Croton lundianus var. genuinus Müll. Arg. -- not accepted
  Croton lundianus var. glabrescens Müll. Arg. -- not accepted
  Croton lundianus var. gracilentus Müll. Arg. -- not accepted
  Croton lundianus var. hilarii (Baill.) Müll. Arg. -- not accepted
  Croton lundianus var. hirtus Müll. Arg. -- not accepted
  Croton lundianus var. intercedens Müll. Arg. -- not accepted
  Croton lundianus var. latifolius (Baill.) Müll. Arg. -- not accepted
  Croton lundianus var. leptophyllus Müll. Arg. -- not accepted
  Croton lundianus var. major Müll. Arg. -- not accepted
  Croton lundianus var. microphyllus (Baill.) Müll. Arg. -- not accepted
  Croton lundianus var. mollis Müll. Arg. -- not accepted
  Croton lundianus var. psilophyllus Müll. Arg. -- not accepted
  Croton lundianus var. pubescens Müll. Arg. -- not accepted
  Croton lundianus var. rufidulus Müll. Arg. -- not accepted
  Croton lundianus var. serratus Müll. Arg. -- not accepted
  Croton lundianus var. similis Müll. Arg. -- not accepted
  Croton lundianus var. subfloccosus (Didr.) Müll. Arg. -- not accepted
  Croton luteobrunneus Baker -- not accepted
  Croton luzianus Müll. Arg. -- accepted
  Croton luzoniensis Müll. Arg. -- accepted
  Croton luzoniensis var. bataanensis Croizat -- accepted
  Croton luzoniensis var. luzoniensis Müll. Arg. -- accepted
  Croton maasii Riina & P.E. Berry -- accepted
  Croton macbridei Croizat -- not accepted
  Croton macradenis Görts & Punt -- accepted
  Croton macraei Hook. f. -- not accepted
  Croton macrobothrys Baill. -- accepted
  Croton macrobuxus Baill. -- accepted
  Croton macrocalyx Mart. ex Baill. -- not accepted
  Croton macrocalyx Ehrenb. ex Schweinf. -- not accepted
  Croton macrocarpus Ridl. -- not accepted
  Croton macrocarpus Rchb. ex Müll. Arg. -- not accepted
  Croton macrochlamys Baill. -- not accepted
  Croton macrodontus Müll. Arg. -- accepted
  Croton macrolepis Radcl.-Sm. & Govaerts -- accepted
  Croton macrostachyus Hochst. ex Delile -- accepted
  Croton macrostachyus var. mollissimus Chiov. -- not accepted
  Croton maculatus Vahl -- accepted
  Croton maestrensis (Alain) B.W. van Ee & P.E. Berry -- accepted
  Croton maevaranensis Leandri -- accepted
  Croton magdalenae Millsp. -- accepted
  Croton magdalenensis Müll. Arg. -- not accepted
  Croton magdalenensis var. glabratus Müll. Arg. -- not accepted
  Croton magdalenensis var. leucoxanthus Müll. Arg. -- not accepted
  Croton magneticus Airy Shaw -- accepted
  Croton mahafaliensis Leandri -- not accepted
  Croton maidenii R.T. Baker -- not accepted
  Croton maieuticus Gagnep. -- not accepted
  Croton malabaricus Bedd. -- accepted
  Croton malacophyllus Benth. -- not accepted
  Croton malacotrichus Müll. Arg. -- not accepted
  Croton malambo H. Karst. -- accepted
  Croton mallotophyllus Croizat -- accepted
  Croton malpighipilus Hicken -- not accepted
  Croton malvaviscifolius Millsp. -- accepted
  Croton malvifolius Griff. -- not accepted
  Croton malvoides (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton mamillatus P.I. Forst. -- accepted
  Croton manampetsae Leandri -- accepted
  Croton mangelong Y.T. Chang -- not accepted
  Croton manihot Baill. -- not accepted
  Croton mansfeldii Urb. -- accepted
  Croton marcuzzianus Croizat -- not accepted
  Croton margaritensis J.R. Johnst. -- not accepted
  Croton marginatus A. Cunn. ex Benth. -- not accepted
  Croton maritimus Walter -- not accepted
  Croton martii Müll. Arg. -- not accepted
  Croton martii var. latifolius Müll. Arg. -- not accepted
  Croton martii var. longifolius Müll. Arg. -- not accepted
  Croton martinianus V.W. Steinm. -- accepted
  Croton masonii I.M. Johnst. -- accepted
  Croton massangeanum Linden ex André -- not accepted
  Croton matourensis Aubl. -- accepted
  Croton matourensis var. benthamianus Müll. Arg. -- not accepted
  Croton matourensis var. genuinus Müll. Arg. -- not accepted
  Croton matourensis var. poeppigianus Müll. Arg. -- not accepted
  Croton matourensis var. sericeus Müll. Arg. -- not accepted
  Croton matronalis Baill. -- not accepted
  Croton mauralis E.H.L. Krause -- not accepted
  Croton mauritianus Lam. -- accepted
  Croton mauritianus Stadtm. ex Willemet -- not accepted
  Croton mauritianus Thouars ex Baill. -- not accepted
  Croton mavoravina Leandri -- accepted
  Croton mayanus B.L. León & H.F.M. Vester -- accepted
  Croton mayumbensis J. Léonard -- accepted
  Croton mazapensis Lundell -- accepted
  Croton mazapensis var. mazapensis Lundell -- accepted
  Croton mazapensis var. obtusifolius (Müll. Arg.) G.L. Webster -- accepted
  Croton mazapensis var. pacificus G.L. Webster -- accepted
  Croton mcvaughii G.L. Webster -- accepted
  Croton mearnsii De Wild. -- not accepted
  Croton medians Müll. Arg. -- accepted
  Croton medusae Müll. Arg. -- accepted
  Croton meeboldianus Chakrab. & N.P. Balakr. -- accepted
  Croton meeusei Leandri -- accepted
  Croton megaladenus Urb. -- accepted
  Croton megalobotryoides De Wild. -- accepted
  Croton megalobotrys Müll. Arg. -- accepted -- large fever berry
  Croton megalocalyx Müll. Arg. -- accepted
  Croton megalocarpoides Friis & M.G. Gilbert -- accepted
  Croton megalocarpus Hutch. -- accepted
  Croton megalodendron Müll. Arg. -- accepted
  Croton megistocarpus J.A. Gonzalez & Poveda -- accepted
  Croton mekongensis Gagnep. -- accepted
  Croton melanoleucus Müll. Arg. -- accepted
  Croton membranaceus Müll. Arg. -- accepted
  Croton menabeensis Leandri -- accepted
  Croton menarandrae Leandri -- accepted
  Croton menthodorus Benth. -- accepted
  Croton mentiens (S. Moore) Pax -- accepted
  Croton menyhartii Pax -- accepted
  Croton meridionalis Leandri -- accepted
  Croton merrillianus Croizat -- accepted
  Croton metallicus Müll. Arg. -- accepted
  Croton mexicanus Müll. Arg. -- accepted
  Croton mexicanus var. glabrescens Müll. Arg. -- not accepted
  Croton mexicanus var. glandulosus Müll. Arg. -- not accepted
  Croton mexicanus var. subintegrifolius Müll. Arg. -- not accepted
  Croton miarensis Leandri -- accepted
  Croton micans Sw. -- accepted
  Croton micans var. argyroglossus (Baill.) Müll. Arg. -- not accepted
  Croton micans var. argyrophyllus (Kunth) Müll. Arg. -- not accepted
  Croton micans var. genuinus Müll. Arg. -- not accepted
  Croton micans var. pubescens (Klotzsch) Müll. Arg. -- not accepted
  Croton michaelii V.W. Steinm. -- accepted
  Croton michauxii G.L. Webster -- accepted -- Michaux's croton, narrowleaf rushfoil
  Croton michauxii var. elliptica (Willd.) B.W. van Ee & P.E. Berry -- accepted -- elliptic-leaf rushfoil, Willdenow's croton
  Croton michauxii var. michauxii G.L. Webster -- accepted -- Michaux's croton, narrowleaf rushfoil
  Croton micradenus Urb. -- accepted
  Croton micranthus Müll. Arg. -- not accepted
  Croton microbotryus Pax -- not accepted
  Croton microcalyx (Müll. Arg.) G.L. Webster -- accepted
  Croton microcarpus Ham. -- accepted -- money croton
  Croton microdon Urb. -- not accepted
  Croton microgyne Croizat -- accepted
  Croton microphyllinus Radcl.-Sm. & Govaerts -- accepted
  Croton microphyllus Lam. -- not accepted
  Croton microprunus Baill. -- not accepted
  Croton microtiglium Burkill -- accepted
  Croton migrans Casar. -- not accepted
  Croton milanjensis Leandri -- accepted
  Croton milleri J.R. Johnst. -- accepted
  Croton mimeticus S. Moore -- not accepted
  Croton minarum Müll. Arg. -- not accepted
  Croton minimus P.I. Forst. -- accepted
  Croton minutiflorus Müll. Arg. -- not accepted
  Croton miquelensis A.M. Ferguson -- not accepted
  Croton miradorensis Müll. Arg. -- accepted
  Croton miraflorensis Borhidi -- accepted
  Croton mirus Domin -- not accepted
  Croton missionum Croizat -- accepted
  Croton moanus Urb. -- not accepted
  Croton mocinoi Radcl.-Sm. & Govaerts -- not accepted
  Croton mocquerysii Aug. DC. -- accepted
  Croton mohavensis (A.M. Ferguson) Tidestr. -- not accepted
  Croton mollis Benth. -- accepted
  Croton mollissimus Geiseler -- not accepted
  Croton mollissimus Vahl ex Geiseler -- not accepted
  Croton mollivelus Baill. -- not accepted
  Croton moluccanus L. -- not accepted
  Croton moluccanus Willd. -- not accepted
  Croton monachinoensis Jabl. -- not accepted
  Croton monanthogynus Michx. -- accepted -- prairie-tea, oneseeded croton, prairie tea
  Croton mongue Baill. -- accepted
  Croton mongue var. vatambensis Leandri -- not accepted
  Croton monogynus Urb. -- accepted
  Croton montanus Geiseler -- not accepted
  Croton montanus Willd. -- not accepted
  Croton montevidensis Spreng. -- accepted
  Croton monticola Steud. -- not accepted
  Croton montis-silam Airy Shaw -- accepted
  Croton moonii Thwaites -- accepted
  Croton mooriae Greenway ex Burtt Davy & Hoyle -- not accepted
  Croton moraharivensis Leandri -- accepted
  Croton morifolius Willd. -- accepted
  Croton morifolius var. brandegeanus (Croizat) G.L. Webster -- accepted
  Croton morifolius var. genuinus Willd. -- not accepted
  Croton morifolius var. lanatus Willd. -- not accepted
  Croton morifolius var. morifolius Willd. -- accepted
  Croton morifolius var. obtusifolius Willd. -- not accepted
  Croton morifolius var. sphaerocarpus (Kunth) Müll. Arg. -- accepted
  Croton moritibensis Baill. -- accepted
  Croton morobensis Croizat -- accepted
  Croton morobensis var. multinervis Airy Shaw -- not accepted
  Croton morotaeus Airy Shaw -- accepted
  Croton moustiquensis Urb. -- accepted
  Croton mubango Müll. Arg. -- accepted
  Croton mucronatus Willd. -- not accepted
  Croton mucronifolius Müll. Arg. -- accepted
  Croton muelleri J.M. Coult. -- not accepted
  Croton multicaulis P.I. Forst. -- accepted
  Croton multicaulis ssp. multicaulis P.I. Forst. -- accepted
  Croton multicaulis ssp. velutinus P.I. Forst. -- accepted
  Croton multicolor Veitch ex Andre -- not accepted
  Croton multicostatus Müll. Arg. -- accepted
  Croton multicostatus Pittier -- not accepted
  Croton multiglandulosus Reinw. ex Blume -- not accepted
  Croton multispicatus Vell. -- not accepted
  Croton munizii Borhidi -- accepted
  Croton murex Croizat -- accepted
  Croton muricatus Vahl -- accepted
  Croton muricatus Nutt. -- not accepted
  Croton muricatus Bojer -- not accepted
  Croton muricatus Blanco -- not accepted
  Croton muriculatus Airy Shaw -- accepted
  Croton musaicus André -- not accepted
  Croton muscicapa Müll. Arg. -- accepted
  Croton mutabilis P.I. Forst. -- accepted
  Croton mutisianus Kunth -- accepted
  Croton myriadenus Müll. Arg. -- not accepted
  Croton myriadenus f. abortivus Müll. Arg. -- not accepted
  Croton myriadenus var. normalis Müll. Arg. -- not accepted
  Croton myriadenus var. parvifolius Müll. Arg. -- not accepted
  Croton myrianthus Müll. Arg. -- accepted
  Croton myriaster Baker -- accepted
  Croton myriaster var. austromadecassa Leandri -- not accepted
  Croton myricifolius Griseb. -- accepted
  Croton myrsinites Baill. -- accepted
  Croton nanus Gagnep. -- accepted
  Croton nanus Urb. & Ekman -- not accepted
  Croton neblinae Jabl. -- accepted
  Croton nepalensis T. Kuros. -- accepted
  Croton nepetifolius Baill. -- accepted
  Croton nephrophyllus Urb. & Ekman -- accepted
  Croton nervosus Klotzsch -- not accepted
  Croton nervosus Rich. ex A. Rich. -- not accepted
  Croton nervosus Rottler -- not accepted
  Croton nervosus var. pubescens Klotzsch -- not accepted
  Croton nervosus var. villosus Klotzsch -- not accepted
  Croton nicaraguensis Radcl.-Sm. & Govaerts -- not accepted
  Croton nigricans (Mart. ex Schltdl.) Radcl.-Sm. & Govaerts -- accepted
  Croton nigritanus Scott-Elliot -- accepted
  Croton nigroviridis Thwaites -- accepted
  Croton niloticus Müll. Arg. -- not accepted
  Croton nipensis Urb. -- not accepted
  Croton nitens Sw. -- accepted
  Croton nitidulifolius Croizat -- accepted
  Croton nitidulus Baker -- accepted
  Croton nitidulus var. grandifolia Leandri -- not accepted
  Croton nitidulus var. meridionalis Leandri -- not accepted
  Croton nitidulus var. parvifolia Leandri -- not accepted
  Croton nitidulus var. spatulata Leandri -- not accepted
  Croton nitidulus var. tandrokensis Leandri -- not accepted
  Croton nitrariifolius Baill. -- accepted
  Croton nitrariifolius var. divaricatus Müll. Arg. -- not accepted
  Croton nitrariifolius var. genuinus Müll. Arg. -- not accepted
  Croton nitrariifolius var. polymorphus (Müll. Arg.) Müll. Arg. -- not accepted
  Croton nitrariifolius var. velleriflorus (Baill.) Müll. Arg. -- not accepted
  Croton niveus Jacq. -- accepted
  Croton niveus Billb. ex Beurl. -- not accepted
  Croton niveus Griseb. -- not accepted
  Croton nivifer S. Moore -- accepted
  Croton nobilis Baill. -- accepted
  Croton nobilis var. delphinensis Leandri -- not accepted
  Croton noronhae Baill. -- accepted
  Croton novae-astigis Croizat -- accepted
  Croton nubigenus G.L. Webster -- accepted
  Croton nudatus Baill. -- accepted
  Croton nudifolius Baker & Hutch. -- not accepted
  Croton nudulus Croizat -- accepted
  Croton nudus Willd. ex Schltdl. -- not accepted
  Croton nummulariifolius A. Rich. -- accepted -- money croton
  Croton nummularius Baill. -- accepted
  Croton nuntians Croizat -- accepted
  Croton nutans G. Forst. -- not accepted
  Croton obliquifolius Vis. -- not accepted
  Croton obliquus Vahl -- not accepted
  Croton oblongifolius Roxb. -- not accepted
  Croton oblongifolius Delile -- not accepted
  Croton oblongifolius Sieber ex Spreng. -- not accepted
  Croton oblongus Burm. f. -- accepted
  Croton obtusus Rusby -- not accepted
  Croton ochromifolius Rusby -- not accepted
  Croton odontadenius Müll. Arg. -- accepted
  Croton odontopetalus Müll. Arg. -- not accepted
  Croton odoratus Ridl. -- not accepted
  Croton oerstedianus Müll. Arg. -- accepted
  Croton officinalis (Klotzsch) Alston -- not accepted
  Croton olanchanus Standl. & L.O. Williams -- accepted
  Croton oligandrus Pierre ex Hutch. -- accepted
  Croton oliganthus Müll. Arg. -- accepted
  Croton olivaceus Müll. Arg. -- accepted
  Croton olivaceus Y.T. Chang & P.T. Li -- not accepted
  Croton ophiticola Borhidi -- accepted
  Croton opponens F. Muell. ex Benth. -- not accepted
  Croton oppositifolius Geiseler -- not accepted
  Croton orbicularis Thunb. -- accepted
  Croton orbignyanus Müll. Arg. -- accepted
  Croton oreades Leandri -- accepted
  Croton oreades var. occidentalis Leandri -- not accepted
  Croton oreoborneicus Croizat -- not accepted
  Croton oreophilus Müll. Arg. -- not accepted
  Croton organensis Baill. -- accepted
  Croton orientensis Borhidi -- accepted
  Croton origanifolius Lam. -- accepted
  Croton origanifolius var. discolor Müll. Arg. -- not accepted
  Croton origanifolius var. genuinus Müll. Arg. -- not accepted
  Croton origanifolius var. gracilis Müll. Arg. -- not accepted
  Croton origanifolius var. heterophyllus Müll. Arg. -- not accepted
  Croton orinocensis Müll. Arg. -- accepted
  Croton ortegae Standl. -- accepted
  Croton ortholobus Müll. Arg. -- accepted
  Croton ovalifolius Vahl -- accepted -- yerba
  Croton ovalifolius var. genuinus Müll. Arg. -- not accepted
  Croton ovalifolius var. nummularius (Baill.) Müll. Arg. -- not accepted
  Croton ovatus Noronha -- not accepted
  Croton oxypetalus Müll. Arg. -- not accepted
  Croton pachecensis S. Moore -- accepted
  Croton pachycalyx Müll. Arg. -- not accepted
  Croton pachyclados Radcl.-Sm. -- not accepted
  Croton pachypodus G.L. Webster -- accepted
  Croton pachyrachis Alain -- accepted
  Croton pachysepalus Griseb. -- accepted
  Croton padifolius Geiseler -- not accepted
  Croton pagiveteris Croizat -- accepted
  Croton pakaraimae Jabl. -- not accepted
  Croton palanostigma Klotzsch -- accepted
  Croton palawanensis Merr. ex Croizat -- accepted
  Croton pallens Sw. -- not accepted
  Croton pallidulus Baill. -- accepted
  Croton pallidulus var. myrianthus (Müll. Arg.) L.B. Sm. & S.F. Sm. -- not accepted
  Croton pallidus Müll. Arg. -- accepted
  Croton palmeri S. Watson -- accepted
  Croton paludosus Müll. Arg. -- accepted
  Croton palustris L. -- not accepted
  Croton palustris Vell. -- not accepted
  Croton palustris Kunth -- not accepted
  Croton pampangensis Croizat -- accepted
  Croton panamensis (Klotzsch) Müll. Arg. -- not accepted
  Croton panduriformis Müll. Arg. -- accepted
  Croton paniculatus Müll. Arg. -- not accepted
  Croton paniculatus Lam. -- not accepted
  Croton pannosus Thunb. -- accepted
  Croton paraensis Müll. Arg. -- accepted
  Croton paraguayensis Chodat -- accepted
  Croton pardinus Müll. Arg. -- accepted
  Croton parhamii Croizat -- accepted
  Croton parksii Croizat -- accepted -- Parks' croton
  Croton parodianus Croizat -- accepted
  Croton parvifolius Müll. Arg. -- accepted
  Croton pascualii E.J. Lott & M. Martinez-G. -- accepted
  Croton patrum L.B. Sm. & Downs -- accepted
  Croton patulus Lag. -- not accepted
  Croton paucistamineus Müll. Arg. -- accepted
  Croton pauperulus Müll. Arg. -- not accepted
  Croton pavana Buch.-Ham. -- not accepted
  Croton pavonianus Radcl.-Sm. & Govaerts -- not accepted
  Croton pavonis Müll. Arg. -- accepted
  Croton payaquensis Standl. -- accepted
  Croton payerianus Baill. -- not accepted
  Croton pedersenii Ahumada -- accepted
  Croton pedicellatus Kunth -- accepted
  Croton peekelii Lauterb. -- accepted
  Croton pellitus Kunth -- accepted
  Croton peltatus Thunb. -- accepted
  Croton peltieri Leandri -- accepted
  Croton peltoideus Kunth -- not accepted
  Croton peltophorus Müll. Arg. -- accepted
  Croton penaeaceus Baill. -- not accepted
  Croton pendens Lundell -- accepted
  Croton penduliflorus Hutch. -- accepted
  Croton penicillatus Vent. -- not accepted
  Croton penninervis Scheele -- accepted
  Croton pentandrus Müll. Arg. -- not accepted
  Croton peraeruginosus Croizat -- accepted
  Croton peraffinis Müll. Arg. -- accepted
  Croton perdicipes A. St.-Hil. -- not accepted
  Croton perdicipes var. genuinus Baill. -- not accepted
  Croton perdicipes var. latifolius Baill. -- not accepted
  Croton perdicipes var. minor Baill. -- not accepted
  Croton perdicipes var. weddellianus Baill. -- not accepted
  Croton perimetralensis Secco -- accepted
  Croton perintricatus Croizat -- accepted
  Croton perlongiflorus Croizat -- accepted
  Croton perobtusus Lundell -- not accepted
  Croton perrieri Leandri -- accepted
  Croton perrottetianus Baill. -- not accepted
  Croton persicaria Baill. -- accepted
  Croton persimilis Müll. Arg. -- not accepted
  Croton persimilis var. genuinus Müll. Arg. -- not accepted
  Croton persimilis var. glabratus Müll. Arg. -- not accepted
  Croton perspeciosus Croizat -- accepted
  Croton peruvianus Briq. -- accepted
  Croton pervestitus C. Wright ex Griseb. -- accepted
  Croton perviscosus Croizat -- accepted
  Croton petraeus Müll. Arg. -- accepted
  Croton petraeus var. oblongifolius Müll. Arg. -- not accepted
  Croton petraeus var. ovatus Müll. Arg. -- not accepted
  Croton phaenodon Airy Shaw -- accepted
  Croton phebalioides F. Muell. ex Müll. Arg. -- accepted
  Croton phebalioides A. Cunn. ex Benth. -- not accepted
  Croton phebalioides var. acuminatus Domin -- not accepted
  Croton phebalioides var. hirsuta F.M. Bailey -- not accepted
  Croton phebalioides var. stigmatosus (F. Muell.) Domin -- not accepted
  Croton philippensis Lam. -- not accepted
  Croton philippsii B.S. Williams -- not accepted
  Croton philombros Croizat -- not accepted
  Croton phlomoides Pers. -- not accepted
  Croton phlomoides Salzm. ex Baill. -- not accepted
  Croton phuquocensis Croizat -- accepted
  Croton phyllanthus (Chodat & Hassl.) G.L. Webster -- accepted
  Croton piauhiensis Müll. Arg. -- accepted
  Croton picardae Urb. -- not accepted
  Croton picturatum André -- not accepted
  Croton pictus Lodd. -- not accepted
  Croton pierrei Gagnep. -- not accepted
  Croton pigmentarius Noronha -- not accepted
  Croton pilargyros Croizat -- not accepted
  Croton pilophorus Airy Shaw -- accepted
  Croton pilosus Spreng. -- accepted
  Croton pilulifer Rusby -- accepted
  Croton piptocalyx Müll. Arg. -- accepted
  Croton pittieri Pax -- not accepted
  Croton plagiograptus Müll. Arg. -- accepted
  Croton platanifolius Baker -- not accepted
  Croton platycladus Müll. Arg. -- not accepted
  Croton pleytei Airy Shaw -- accepted
  Croton plicatus Vahl -- not accepted
  Croton plukenetii Geiseler -- not accepted
  Croton plumieri Urb. -- not accepted
  Croton poecilanthus Urb. -- accepted -- sabinon
  Croton poggei Pax -- accepted
  Croton pohlianus Müll. Arg. -- accepted
  Croton pohlianus var. semiglabratus Müll. Arg. -- not accepted
  Croton poilanei Gagnep. -- accepted
  Croton poitaei Urb. -- accepted
  Croton polot Burm. f. -- accepted
  Croton polyandrus Spreng. -- accepted
  Croton polycarpus Benth. -- not accepted
  Croton polygamus Jacq. -- not accepted
  Croton polygonoides L.B. Sm. & Downs -- accepted
  Croton polymorphus Müll. Arg. -- not accepted
  Croton polymorphus var. glabrescens Müll. Arg. -- not accepted
  Croton polymorphus var. velleriflorus (Baill.) Müll. Arg. -- not accepted
  Croton polypleurus Croizat -- accepted
  Croton polystachyus Hook. & Arn. -- not accepted
  Croton polystachyus Spreng. -- not accepted
  Croton polytomus Urb. -- accepted
  Croton polytrichus Pax -- accepted
  Croton polytrichus ssp. brachystachyus Radcl.-Sm. -- accepted
  Croton polytrichus ssp. polytrichus Pax -- accepted
  Croton pomaderris Baill. -- accepted
  Croton pontis Croizat -- accepted
  Croton populifolius Mill. -- not accepted
  Croton populifolius var. essequiboensis (Klotzsch ex Benth.) Müll. Arg. -- not accepted
  Croton populifolius var. genuinus Müll. Arg. -- not accepted
  Croton portoricensis P.T. Li -- not accepted
  Croton potabilis Croizat -- accepted
  Croton potaroensis Lanj. -- accepted
  Croton pottsii (Klotzsch) Müll. Arg. -- accepted -- leatherweed croton, leatherweed
  Croton pottsii var. pottsii (Klotzsch) Müll. Arg. -- accepted -- leatherweed, encinilla, leather croton, Potts' leatherweed, leatherweed croton
  Croton pottsii var. thermophilus (M.C. Johnst.) M.C. Johnst. -- accepted -- leatherweed
  Croton pringlei S. Watson -- not accepted
  Croton priorianus Urb. -- accepted
  Croton priscus Croizat -- accepted
  Croton procumbens Jacq. -- accepted
  Croton procumbens C. Wright ex Griseb. -- not accepted
  Croton promunturii Leandri -- accepted
  Croton prostratus Urb. -- accepted
  Croton prunifolius Airy Shaw -- not accepted
  Croton prunifolius Vahl -- not accepted
  Croton psammophilus Lillo -- not accepted
  Croton pseudoadipatus Croizat -- accepted
  Croton pseudochina Schltdl. -- not accepted
  Croton pseudofragrans Croizat -- accepted
  Croton pseudogracilipes Pax & K. Hoffm. -- not accepted
  Croton pseudoniloticus De Wild. -- accepted
  Croton pseudoniveus Lundell -- accepted
  Croton pseudopopulus Baill. -- accepted
  Croton pseudopulchellus Pax -- accepted
  Croton pseudoxalapensis Croizat -- not accepted
  Croton pseudoxalapensis var. cobanensis Croizat -- not accepted
  Croton pubens Domin -- not accepted
  Croton pubescens Geiseler -- accepted
  Croton pulchellus Baill. -- not accepted
  Croton pulcher Müll. Arg. -- accepted
  Croton pulcherrimus Willd. ex Schltdl. -- not accepted
  Croton pulegiodorus Baill. -- accepted
  Croton pullei Lanj. -- accepted
  Croton pullei var. glabrior Lanj. -- accepted
  Croton pullei var. pullei Lanj. -- accepted
  Croton punctatus Jacq. -- accepted -- gulf croton
  Croton punctatus Moon -- not accepted
  Croton punctatus Retz. -- not accepted
  Croton punctatus A. Rich. ex Baill. -- not accepted
  Croton punctatus Lour. -- not accepted
  Croton punctatus Anderson -- not accepted
  Croton pungens Jacq. -- accepted
  Croton pungens var. genuinus Müll. Arg. -- not accepted
  Croton pungens var. rhomboidalis Müll. Arg. -- not accepted
  Croton purdiaei Müll. Arg. -- accepted
  Croton purpurascens Y.T. Chang -- accepted
  Croton purpusii Brandegee -- accepted
  Croton pusilliflorus Croizat -- not accepted
  Croton pycnadenius Müll. Arg. -- accepted
  Croton pycnanthus Benth. -- accepted
  Croton pycnocarpus Müll. Arg. -- not accepted
  Croton pycnocephalus Baill. -- accepted
  Croton pycnocephalus var. chamaepitys (Baill.) Müll. Arg. -- not accepted
  Croton pycnocephalus var. echinulatus Griseb. -- not accepted
  Croton pycnocephalus var. genuinus Müll. Arg. -- not accepted
  Croton pycnocephalus var. intermedius Müll. Arg. -- not accepted
  Croton pycnocephalus var. lachnostephanus (Baill.) Müll. Arg. -- not accepted
  Croton pycnophyllus Salzm. ex Schltdl. -- accepted
  Croton pycnotrichus Müll. Arg. -- not accepted
  Croton pycnotrichus var. angustifolius Müll. Arg. -- not accepted
  Croton pycnotrichus var. lanceolatus Müll. Arg. -- not accepted
  Croton pygmaeus L.R. Lima -- accepted
  Croton pynaertii De Wild. -- accepted
  Croton pyramidalis Donn. Sm. -- not accepted
  Croton pyrifolius Müll. Arg. -- accepted
  Croton pyriticus Croizat -- not accepted
  Croton pyrosoma (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton quadripartitus Labill. -- not accepted
  Croton quadrisetosus Lam. -- accepted
  Croton quercetorum Croizat -- accepted
  Croton quinquecuspidatus A. Juss. -- not accepted
  Croton quintasii Allem -- accepted
  Croton quisumbingianus Croizat -- accepted
  Croton quitensis Spreng. -- not accepted
  Croton racemosus Burm. f. -- accepted
  Croton radlkoferi Pax & K. Hoffm. -- accepted
  Croton rakotoniainii Leandri -- accepted
  Croton ramboi Allem -- accepted
  Croton ramellae Ahumada -- accepted
  Croton ramiflorus J. Graham -- not accepted
  Croton ramillatus Croizat -- accepted
  Croton ramillatus var. insignilobus Croizat -- not accepted
  Croton ranohirae Leandri -- accepted
  Croton rarus P.I. Forst. -- accepted
  Croton rectangularis Urb. -- not accepted
  Croton rectipilis Croizat -- accepted
  Croton redolens Pittier -- accepted
  Croton reflexifolius Kunth -- accepted
  Croton refractus Müll. Arg. -- accepted
  Croton regeneratrix Leandri -- accepted
  Croton regeneratrix var. perrieriensis Leandri -- not accepted
  Croton rehderianus Croizat -- accepted
  Croton reitzii L.B. Sm. & Downs -- accepted
  Croton repandus Rottler -- not accepted
  Croton repens Schltdl. -- accepted
  Croton reticulatus Willd. -- not accepted
  Croton revolutus (Alain) B.W. van Ee & P.E. Berry -- accepted
  Croton rhamnifolioides Pax & K. Hoffm. -- accepted
  Croton rhamnifolius Kunth -- not accepted
  Croton rhamnifolius Willd. -- not accepted
  Croton rhamnifolius var. alagoensis Müll. Arg. -- not accepted
  Croton rhamnifolius var. antillanus Müll. Arg. -- not accepted
  Croton rhamnifolius var. casarettoanus Müll. Arg. -- not accepted
  Croton rhamnifolius var. caudatus Pax -- not accepted
  Croton rhamnifolius var. conduplicatus (Kunth) Müll. Arg. -- not accepted
  Croton rhamnifolius var. genuinus Müll. Arg. -- not accepted
  Croton rhamnifolius var. heliotropiifolius (Kunth) Müll. Arg. -- not accepted
  Croton rhamnifolius var. moritibensis (Baill.) Müll. Arg. -- not accepted
  Croton rhamnifolius var. salviifolius (Kunth) Müll. Arg. -- not accepted
  Croton rheedei J. Graham -- accepted
  Croton rheophyticus Airy Shaw -- accepted
  Croton rhexiifolius Baill. -- accepted
  Croton rhodostachyus Müll. Arg. -- accepted
  Croton rhombifolius Willd. -- not accepted
  Croton richardii Willd. -- not accepted
  Croton ricinocarpus L. -- not accepted
  Croton ricinoides Pers. -- not accepted
  Croton ricinokarpos Houtt. -- not accepted
  Croton riedelianus Müll. Arg. -- not accepted
  Croton rigidus Britton -- not accepted -- yellow balsam
  Croton rimbachii Croizat -- accepted
  Croton riparius Kunth -- not accepted
  Croton ripensis Kaneh. & Hatus. -- accepted
  Croton rivinifolius Kunth -- accepted
  Croton rivinoides Chodat -- not accepted
  Croton rivularis Müll. Arg. -- accepted
  Croton robustior (L.B. Sm. & Downs) Radcl.-Sm. & Govaerts -- accepted
  Croton robustus Kurz -- accepted
  Croton robustus var. serratus Chakrab., N.P. Balakr. & D. Gupta -- not accepted
  Croton roraimensis Croizat -- accepted
  Croton roraimensis var. subinteger Steyerm. -- not accepted
  Croton rosarianus Mart. Gord. & Cruz Durán -- accepted
  Croton rosmarinifolius Griseb. -- not accepted
  Croton rosmarinifolius A. Cunn. -- not accepted
  Croton rosmarinifolius Drumm. ex Müll. Arg. -- not accepted
  Croton rosmarinifolius Salisb. -- not accepted
  Croton rosmarinifolius A. Cunn. ex Benth. -- not accepted
  Croton rosmarinoides Millsp. -- accepted
  Croton rottleri Geiseler -- not accepted
  Croton rottlerifolius Baill. -- accepted
  Croton roxanae Croizat -- accepted
  Croton roxburghii N.P. Balakr. -- accepted
  Croton rubiginosus Croizat -- accepted
  Croton rubinoensis Aubrév. -- not accepted
  Croton rubricapitirupis Leandri -- accepted
  Croton rudolphianus Müll. Arg. -- accepted
  Croton rufescens Müll. Arg. -- not accepted
  Croton rufidulus Baill. -- not accepted
  Croton rufolepidotus Caruzo & Riina -- accepted
  Croton rugelianus (Urb.) Urb. -- not accepted
  Croton ruizianus Müll. Arg. -- accepted
  Croton ruizianus var. cordatus Müll. Arg. -- not accepted
  Croton ruizianus var. ovatus Müll. Arg. -- not accepted
  Croton ruizianus var. podadenius Müll. Arg. -- not accepted
  Croton rupestris (Chodat & Hassl.) G.L. Webster -- accepted
  Croton rusbyi Britton ex Rusby -- accepted
  Croton russulus Croizat -- accepted
  Croton rutilus (Chodat & Hassl.) G.L. Webster -- accepted
  Croton sabanensis Urb. -- not accepted
  Croton sacaquinha Croizat -- accepted
  Croton sagraeanus Müll. Arg. -- accepted
  Croton saipanensis Hosok. -- accepted
  Croton sakamaliensis Leandri -- accepted
  Croton sakamaliensis var. microphylla Leandri -- not accepted
  Croton salicifolius Gagnep. -- not accepted
  Croton salicifolius Geiseler -- not accepted
  Croton saltensis Griseb. -- accepted
  Croton saltensis var. discolor Griseb. -- not accepted
  Croton salutaris Casar. -- accepted
  Croton salvifolius Mill. -- not accepted
  Croton salviformis Baill. -- accepted
  Croton salviformis var. rufopunctata Leandri -- not accepted
  Croton salviifolius Kunth -- not accepted
  Croton salzmannii (Baill.) G.L. Webster -- accepted
  Croton samarensis Airy Shaw -- accepted
  Croton sambiranensis Leandri -- not accepted
  Croton sampatik Müll. Arg. -- accepted
  Croton sanctae-crucis S. Moore -- accepted
  Croton sancti-lazari Croizat -- accepted -- Trans-Pecos croton
  Croton sancti-paulii Croizat -- accepted
  Croton sanguifluus Kunth -- not accepted
  Croton sanguis-draconis Mart. ex Baill. -- not accepted
  Croton santaritensis Huft -- accepted
  Croton santisukii Airy Shaw -- accepted
  Croton santolinus Baill. -- accepted
  Croton sapiiflorus Croizat -- accepted
  Croton sapiifolius Müll. Arg. -- accepted
  Croton sarcopetaloides S. Moore -- accepted
  Croton sarcopetalus Müll. Arg. -- not accepted
  Croton sarocarpus Balf. f. -- accepted
  Croton saxosus Müll. Arg. -- not accepted
  Croton scaber Willd. -- accepted
  Croton scaber var. genuinus Müll. Arg. -- not accepted
  Croton scaber var. lanceolatus Müll. Arg. -- not accepted
  Croton scaber var. latifolius Müll. Arg. -- not accepted
  Croton scaber var. obscurus Müll. Arg. -- not accepted
  Croton scaber var. viridis Müll. Arg. -- not accepted
  Croton scaberrimus Müll. Arg. -- not accepted
  Croton scabiosus Bedd. -- accepted
  Croton scandens Vell. -- not accepted
  Croton scandens Sieber ex C. Presl -- not accepted
  Croton scarciesii Scott Elliot -- not accepted
  Croton scheffleri Pax -- accepted
  Croton schiedeanus Schltdl. -- accepted
  Croton schimperianus Müll. Arg. -- accepted
  Croton schimperianus var. acutissimus Chiov. -- not accepted
  Croton schomburgkianus A.P.S. Gomes & M.F. Sales -- accepted
  Croton schultesii Müll. Arg. -- accepted
  Croton schultzii Benth. -- accepted
  Croton sclerocalyx (Didr.) Müll. Arg. -- accepted
  Croton sclerocalyx f. luxurians Müll. Arg. -- not accepted
  Croton sclerocalyx var. genuinus Müll. Arg. -- not accepted
  Croton sclerocalyx var. hirsutissimus Müll. Arg. -- not accepted
  Croton sclerocalyx var. hispidus Müll. Arg. -- not accepted
  Croton sclerocalyx var. intermedius Müll. Arg. -- not accepted
  Croton sclerocalyx var. lanceolatus Müll. Arg. -- not accepted
  Croton sclerocalyx var. pubescens Müll. Arg. -- not accepted
  Croton sclerocalyx var. rufidulus (Baill.) Müll. Arg. -- not accepted
  Croton sclerodorus Baill. -- not accepted
  Croton scopuligenus Croizat -- accepted
  Croton scordioides Lam. -- not accepted
  Croton scoriarum Leandri -- accepted
  Croton scottii Baill. -- accepted
  Croton scouleri Hook. f. -- accepted
  Croton scouleri f. incanus (Andersson) Müll. Arg. -- not accepted
  Croton scouleri f. microphyllus (Andersson) Müll. Arg. -- not accepted
  Croton scouleri f. verus Müll. Arg. -- not accepted
  Croton scouleri var. albescens (Andersson) Müll. Arg. -- not accepted
  Croton scouleri var. brevifolius (Andersson) Müll. Arg. -- accepted
  Croton scouleri var. darwinii G.L. Webster -- accepted
  Croton scouleri var. genuinus Müll. Arg. -- not accepted
  Croton scouleri var. grandifolius Müll. Arg. -- accepted
  Croton scouleri var. macraei (Hook. f.) Müll. Arg. -- not accepted
  Croton scouleri var. scouleri Hook. f. -- accepted
  Croton scutatus P.E. Berry -- accepted
  Croton sebiferum L. -- not accepted
  Croton segoviarus Standl. & L.O. Williams -- accepted
  Croton seineri Pax -- not accepted
  Croton sellowianus (Klotzsch) Baill. -- not accepted
  Croton sellowianus f. angustifolius Müll. Arg. -- not accepted
  Croton sellowianus f. brevifolius Müll. Arg. -- not accepted
  Croton sellowianus var. tomentosus Müll. Arg. -- not accepted
  Croton sellowii Baill. -- accepted
  Croton seminudus Müll. Arg. -- accepted
  Croton semivestitus Müll. Arg. -- accepted
  Croton semunculus Croizat -- not accepted
  Croton senegalensis Lam. -- not accepted
  Croton senescens Croizat -- accepted
  Croton sepalinus Airy Shaw -- accepted
  Croton seretii Vermoesen ex De Wild. -- accepted
  Croton sericeus Schltdl. & Cham. -- not accepted
  Croton sericeus Lam. -- not accepted
  Croton serpyllifolius Baill. -- accepted
  Croton serpyllifolius Müll. Arg. -- not accepted
  Croton serpylloides Griseb. -- not accepted
  Croton serratifolius Baill. -- accepted
  Croton serratoideus Radcl.-Sm. & Govaerts -- accepted
  Croton serratus (Klotzsch) Müll. Arg. -- accepted
  Croton serratus var. dichotomus Müll. Arg. -- not accepted
  Croton serratus var. genuinus Müll. Arg. -- not accepted
  Croton sesseianus P.T. Li -- not accepted
  Croton setiger Hook. -- accepted -- turkey mullein, dove weed
  Croton sexmetralis Croizat -- accepted
  Croton shepherdiifolius S. Schauer -- not accepted
  Croton shreveanus Croizat -- accepted
  Croton siamensis Craib -- not accepted
  Croton sibundoyensis Croizat -- accepted
  Croton siderophyllus Baill. -- accepted
  Croton siderophyllus var. genuinus Müll. Arg. -- not accepted
  Croton siderophyllus var. hirsutus Müll. Arg. -- not accepted
  Croton siderophyllus var. velutinus (Baill.) Müll. Arg. -- not accepted
  Croton sidifolius Lam. -- accepted
  Croton sidifolius var. domingensis (Vahl) Müll. Arg. -- not accepted
  Croton sidifolius var. genuinus Müll. Arg. -- not accepted
  Croton sidifolius var. parvifolius Müll. Arg. -- not accepted
  Croton siguaneanus Urb. & Ekman -- not accepted
  Croton siltepecensis Lundell -- accepted
  Croton similis Müll. Arg. -- not accepted
  Croton simulans P.I. Forst. -- accepted
  Croton sincorensis Mart. ex Müll. Arg. -- accepted
  Croton singularis Airy Shaw -- accepted
  Croton sipaliwinensis Lanj. -- accepted
  Croton sirakii Siebold & Zucc. -- not accepted
  Croton sitiens Brandegee -- not accepted
  Croton skutchii Standl. -- accepted
  Croton sloanei Benn. -- not accepted
  Croton smithianus Croizat -- accepted
  Croton socotranus Balf. f. -- accepted
  Croton socotranus var. pachyclados (Radcl.-Sm.) Radcl.-Sm. -- accepted
  Croton socotranus var. socotranus Balf. f. -- accepted
  Croton solanaceus (Müll. Arg.) G.L. Webster -- accepted
  Croton solanifolius Burm. -- not accepted
  Croton soliman Cham. & Schltdl. -- accepted -- Soliman's croton
  Croton somalensis Pax -- accepted
  Croton sonorae Torr. -- accepted -- Sonoran croton
  Croton soratensis Müll. Arg. -- accepted
  Croton soratensis var. intermedius Müll. Arg. -- not accepted
  Croton soratensis var. leptobotryus Müll. Arg. -- not accepted
  Croton soratensis var. pycnanthus Müll. Arg. -- not accepted
  Croton sordidus Benth. -- not accepted
  Croton sousae Mart. Gord. & Cruz Durán -- accepted
  Croton sparsiflorus Morong -- not accepted
  Croton speciosus Müll. Arg. -- accepted
  Croton speciosus ssp. tacarcunensis G.L. Webster -- not accepted
  Croton sphaerocarpus Kunth -- accepted
  Croton sphaerogynus Baill. -- accepted
  Croton spica Baill. -- accepted
  Croton spicatus St.-Lag. -- not accepted
  Croton spicatus P.J. Bergius -- not accepted
  Croton spiciflorus Thunb. -- accepted
  Croton spinosus C. Wright ex Sauvalle -- not accepted
  Croton spinosus Forssk. -- not accepted
  Croton spinosus L. -- not accepted
  Croton spinosus var. heterolepis Urb. -- not accepted
  Croton spiraeifolius Jabl. -- accepted
  Croton spiralis Müll. Arg. -- accepted
  Croton spissirameus Radcl.-Sm. & Govaerts -- accepted
  Croton splendidus Mart. ex Colla -- accepted
  Croton splendidus Baill. -- not accepted
  Croton spruceanus Benth. -- accepted
  Croton spurcus Croizat -- accepted
  Croton squamigerus Baill. -- not accepted
  Croton squamigerus var. acutifolius Müll. Arg. -- not accepted
  Croton squamigerus var. obtusifolius Müll. Arg. -- not accepted
  Croton squamulosus Müll. Arg. -- not accepted
  Croton squamulosus Vahl -- not accepted
  Croton staechadis Baill. -- accepted
  Croton stahelianus Lanj. -- accepted
  Croton staminosus Müll. Arg. -- accepted
  Croton standleyi Steyerm. -- not accepted
  Croton stanneum Baill. -- accepted
  Croton steenkampianus Gerstner -- accepted
  Croton stellatoferrugineus Caruzo & Cordeiro -- accepted
  Croton stellatopilosus H. Ohba -- accepted
  Croton stelluliferus Hutch. -- accepted
  Croton stenandrus Müll. Arg. -- not accepted
  Croton stenopetalus G.L. Webster -- accepted
  Croton stenophyllus Griseb. -- accepted -- West Indian croton
  Croton stenophyllus var. acutifolius Müll. Arg. -- not accepted
  Croton stenophyllus var. brevifolius Müll. Arg. -- not accepted
  Croton stenophyllus var. longifolius Müll. Arg. -- not accepted
  Croton stenophyllus var. rosmarinifolius Müll. Arg. -- not accepted
  Croton stenosepalus Müll. Arg. -- accepted
  Croton stenotrichus Müll. Arg. -- accepted
  Croton steyermarkianus Croizat -- not accepted
  Croton stigmatosus F. Muell. -- accepted
  Croton stigmatosus var. eurybioides Baill. -- not accepted
  Croton stipulaceus Kunth -- accepted
  Croton stipularis (Müll. Arg.) G.L. Webster -- accepted
  Croton stipuliformis J. Murillo -- not accepted
  Croton stockeri (Airy Shaw) Airy Shaw -- accepted
  Croton storckii (Müll. Arg.) A.C. Sm. -- accepted
  Croton storckii Seem. -- not accepted
  Croton striatus Ruiz ex Pax -- not accepted
  Croton strigosus Spreng. -- not accepted
  Croton strobiliformis Secco -- accepted
  Croton stuhlmannii Pax -- not accepted
  Croton stylosus Müll. Arg. -- accepted
  Croton suaveolens Torr. -- accepted -- scented croton
  Croton suaveolens var. oblongifolius Torr. -- not accepted
  Croton suavis Kunth -- accepted
  Croton subacutus (Baill.) Müll. Arg. -- accepted
  Croton subaemulans Baill. -- accepted
  Croton subaemulans var. minor Leandri -- not accepted
  Croton subasperrimus Secco, P.E. Berry & Rosário -- accepted
  Croton subcapitatus Müll. Arg. -- not accepted
  Croton subcinerellus Croizat -- accepted
  Croton subcomosus Müll. Arg. -- not accepted
  Croton subcompressus Müll. Arg. -- accepted
  Croton subcoriaceus Jabl. -- not accepted
  Croton subdecumbens Borhidi & O. Muñiz -- accepted
  Croton subdioecus K. Schum. -- accepted
  Croton suberosus Kunth -- accepted
  Croton subferrugineus Müll. Arg. -- accepted
  Croton subfragilis Müll. Arg. -- accepted
  Croton subglaber K. Schum. -- accepted
  Croton subglaber Urb. -- not accepted
  Croton subgratissimus Prain -- not accepted
  Croton subincanus Müll. Arg. -- accepted
  Croton subjucundus Croizat -- accepted
  Croton sublepidotus Müll. Arg. -- accepted
  Croton sublinearis Leandri -- accepted
  Croton subluteus Lam. -- not accepted
  Croton sublyratus Kurz -- accepted
  Croton submetallicus Baill. -- accepted
  Croton subpannosus Müll. Arg. ex Griseb. -- accepted
  Croton subserratus Jabl. -- accepted
  Croton subsuavis Croizat -- accepted
  Croton subtomentosus L. -- not accepted
  Croton subvillosus Müll. Arg. -- accepted
  Croton sucrensis Steyerm. -- accepted
  Croton sulcifructus Balf. f. -- accepted
  Croton sumatranus Miq. -- accepted
  Croton surinamensis Müll. Arg. -- not accepted
  Croton sutup Lundell -- accepted
  Croton suyapensis Ant. Molina -- not accepted
  Croton swynnertonii S. Moore -- not accepted
  Croton sylvaticus Hochst. -- accepted
  Croton sylvaticus Schltdl. -- not accepted
  Croton sylvestris Poepp. ex Griseb. -- not accepted
  Croton syringifolius Kunth -- not accepted
  Croton tabacifolius Geiseler -- not accepted
  Croton tabascensis Lundell -- accepted
  Croton tafelbergicus Croizat -- not accepted
  Croton talaeporos Radcl.-Sm. -- accepted
  Croton tamberlikii Müll. Arg. -- accepted
  Croton tanalorum Leandri -- accepted
  Croton tarapotensis Müll. Arg. -- accepted
  Croton tardiflorens Leandri -- accepted
  Croton tartonraira Müll. Arg. -- accepted
  Croton tartonrairoides Pax & K. Hoffm. -- accepted
  Croton tawaoensis Croizat -- not accepted
  Croton tchibangensis Pellegr. -- accepted
  Croton tejucensis Müll. Arg. -- accepted
  Croton tenellus Müll. Arg. -- accepted
  Croton tenuicaudatus Lundell -- accepted
  Croton tenuicaulis B.W. van Ee & P.E. Berry -- accepted
  Croton tenuicuspis Baill. -- not accepted
  Croton tenuifolius Pax & K. Hoffm. -- accepted
  Croton tenuilobus S. Watson -- accepted
  Croton tenuiramis Urb. -- not accepted
  Croton tenuis S. Watson -- not accepted
  Croton terminalis Vell. -- accepted
  Croton tessmannii Mansf. -- accepted
  Croton tetradenius Baill. -- accepted
  Croton teucridium Baill. -- accepted
  Croton texensis (Klotzsch) Müll. Arg. -- accepted -- doveweed, goatweed, skunkweed, Texas croton
  Croton texensis var. utahensis Cronquist -- not accepted -- Utah croton
  Croton thellungianus (Herter ex Arechav.) Radcl.-Sm. & Govaerts -- accepted
  Croton thoii Thin -- accepted
  Croton thomasii Riina & P.E. Berry -- accepted
  Croton thorelii Gagnep. -- accepted
  Croton thouarsianus Baill. -- accepted
  Croton thurifer Kunth -- accepted
  Croton thwaitesianus Müll. Arg. -- not accepted
  Croton thymelinus Baill. -- accepted
  Croton tiglioides Blume -- not accepted
  Croton tiglium L. -- accepted -- purging croton
  Croton tiliifolius Lam. -- accepted
  Croton tiliifolius Thouars ex Baill. -- not accepted
  Croton tiliifolius Pers. -- not accepted
  Croton tiliifolius var. aromaticus (L.) Lam. -- not accepted
  Croton timandra Baill. -- not accepted
  Croton timandroides (Didr.) Müll. Arg. -- accepted
  Croton tinctorius Burm. f. -- not accepted
  Croton tinctorius L. -- not accepted
  Croton tocantinsensis Radcl.-Sm. & Govaerts -- accepted
  Croton tomentellus F. Muell. -- accepted
  Croton tomentosa Lour. -- not accepted
  Croton tomentosus (Lour.) Müll. Arg. -- not accepted
  Croton tomentosus Pav. ex Baill. -- not accepted
  Croton tomentosus Sessé & Moç. -- not accepted
  Croton tonantinensis Jabl. -- accepted
  Croton tonduzii Pax -- accepted
  Croton tonkinensis Gagnep. -- not accepted
  Croton touranensis Gagnep. -- accepted
  Croton trachycaulis Airy Shaw -- accepted
  Croton tragifolius Baill. -- not accepted
  Croton tragioides S.F. Blake -- not accepted
  Croton tranomarensis Leandri -- accepted
  Croton tranomarensis var. isomonii Leandri -- not accepted
  Croton tranomarensis var. minor Leandri -- not accepted
  Croton tremulifolius Croizat -- accepted
  Croton triacros F. Muell. -- accepted
  Croton triangularis Müll. Arg. -- accepted
  Croton trichocarpus Torr. -- not accepted
  Croton trichocephalus Müll. Arg. -- not accepted
  Croton trichocephalus var. brevifolius Müll. Arg. -- not accepted
  Croton trichocephalus var. intermedius Müll. Arg. -- not accepted
  Croton trichocephalus var. leptophyllus Müll. Arg. -- not accepted
  Croton trichocephalus var. rigidus Müll. Arg. -- not accepted
  Croton trichophilus (Pax & K. Hoffm.) Radcl.-Sm. & Govaerts -- accepted
  Croton trichophorus Müll. Arg. -- not accepted
  Croton trichotomus Geiseler -- accepted
  Croton trichotomus var. pulchellus (Baill.) Leandri -- not accepted
  Croton tricolor Klotzsch ex Baill. -- accepted
  Croton tricolor Müll. Arg. -- not accepted
  Croton tricuspidatus Lam. -- not accepted
  Croton tridentatus Mart. ex Müll. Arg. -- accepted
  Croton tridesma Leandro ex Baill. -- not accepted
  Croton triglandulatus Vell. -- accepted
  Croton trigonocarpus C. Wright ex Griseb. -- accepted
  Croton trilobatus Forssk. -- not accepted
  Croton trilobatus Sessé & Moç. -- not accepted
  Croton trilobatus Willd. -- not accepted
  Croton trinitatis Millsp. -- accepted -- roadside croton
  Croton triqueter Lam. -- accepted
  Croton tristis Müll. Arg. -- not accepted
  Croton triumfettoides Croizat -- not accepted
  Croton trombetensis Secco, P.E. Berry & N.A. Rosa -- accepted
  Croton tropidophyllus Urb. -- not accepted
  Croton truffautii Chantrier -- not accepted
  Croton tsaratananae Leandri -- accepted
  Croton tsiampiensis Leandri -- accepted
  Croton tuberculatus Bunge -- not accepted
  Croton tucumanensis Griseb. -- not accepted
  Croton tucumanensis var. oblongatus Griseb. -- not accepted
  Croton tulasnei Baill. -- accepted
  Croton turnerifolius S. Moore -- accepted
  Croton turumiquirensis Steyerm. -- accepted
  Croton tyndaridum Croizat -- accepted
  Croton umbellatus Willd. -- not accepted
  Croton umbratilis Kunth -- accepted
  Croton umbrinus Müll. Arg. -- not accepted
  Croton undulatus André -- not accepted
  Croton urceolatus Desv. ex Baill. -- not accepted
  Croton urens L. -- not accepted
  Croton uribei Croizat -- accepted
  Croton urticifolius Lam. -- accepted
  Croton urticifolius Y.T. Chang & Q.H. Chen -- not accepted
  Croton urticifolius var. accedens Müll. Arg. -- not accepted
  Croton urticifolius var. bahiensis Müll. Arg. -- not accepted
  Croton urticifolius var. dui Y.T. Chang -- not accepted
  Croton urticifolius var. genuinus Müll. Arg. -- not accepted
  Croton urticifolius var. intermedius Müll. Arg. -- not accepted
  Croton urticifolius var. stipularis Müll. Arg. -- not accepted
  Croton urticioides A. Cunn. -- accepted
  Croton urticoides A. Cunn. ex Steud. -- not accepted
  Croton urucurana Baill. -- accepted
  Croton urucuranus var. albidus Baill. -- not accepted
  Croton urucuranus var. draconoideus Baill. -- not accepted
  Croton urucuranus var. genuinus Baill. -- not accepted
  Croton uruguayensis Baill. -- accepted
  Croton vaccinioides A. Rich. -- accepted
  Croton vaillantii Geiseler -- accepted
  Croton varelae V.W. Steinm. -- accepted
  Croton variegatus L. -- not accepted
  Croton vatomandrensis Leandri -- accepted
  Croton vaughanii Croizat -- accepted
  Croton vauthieri Müll. Arg. -- not accepted
  Croton vauthierianus Baill. -- accepted
  Croton veitchianus André -- not accepted
  Croton velame Müll. Arg. -- accepted
  Croton velleriflorus Baill. -- not accepted
  Croton vellozianus Müll. Arg. -- accepted
  Croton velutinus Baill. -- accepted
  Croton venezuelensis Radcl.-Sm. & Govaerts -- not accepted
  Croton venosus Spreng. -- not accepted
  Croton ventanicolus Speg. -- not accepted
  Croton vepretorum Müll. Arg. -- accepted
  Croton verapazensis Donn. Sm. -- accepted
  Croton verbascifolius Willd. -- not accepted
  Croton verbascoides G.L. Webster -- accepted
  Croton verbenifolius Müll. Arg. -- accepted
  Croton verdickii De Wild. -- not accepted
  Croton vergarenae (Jabl.) Gillespie -- accepted
  Croton vermoesenii De Wild. -- accepted
  Croton vernicosus Baker -- not accepted
  Croton verreauxii Baill. -- accepted
  Croton verreauxii var. angustifolius Müll. Arg. -- not accepted
  Croton verreauxii var. genuinus Müll. Arg. -- not accepted
  Croton verreauxii var. longifolius Müll. Arg. -- not accepted
  Croton verreauxii var. storckii Müll. Arg. -- not accepted
  Croton verrucosus Radcl.-Sm. & Govaerts -- not accepted
  Croton versicolor Müll. Arg. -- accepted
  Croton vervaetii Linden -- not accepted
  Croton vestitus Spreng. -- accepted
  Croton vidalii Airy Shaw -- accepted
  Croton vietnamensis Radcl.-Sm. & Govaerts -- accepted
  Croton villosissimus (Chodat & Hassl.) Radcl.-Sm. & Govaerts -- accepted
  Croton villosus Müll. Arg. -- not accepted
  Croton villosus Forssk. -- not accepted
  Croton villosus var. cinerascens Müll. Arg. -- not accepted
  Croton villosus var. rufescens Müll. Arg. -- not accepted
  Croton viminalis Griseb. -- accepted
  Croton virens Müll. Arg. -- not accepted
  Croton virgultosus Müll. Arg. -- accepted
  Croton viridulus (Croizat) Radcl.-Sm. & Govaerts -- accepted
  Croton virletianus Müll. Arg. -- accepted
  Croton viscosus Labill. -- not accepted
  Croton vitifolius Lundell -- not accepted
  Croton vogelianus Airy Shaw -- accepted
  Croton vohibariensis Leandri -- accepted
  Croton volubilis Llanos -- not accepted
  Croton vulnerarius Baill. -- accepted
  Croton vulpinus Sessé & Moç. -- accepted
  Croton wagneri Müll. Arg. -- accepted
  Croton wallichii Müll. Arg. -- accepted
  Croton waltherioides Urb. -- accepted
  Croton warmingii Müll. Arg. -- not accepted
  Croton wassi-kussae Croizat -- accepted
  Croton wassi-kussae var. stockeri Airy Shaw -- not accepted
  Croton waterhouseae P.I. Forst. -- accepted
  Croton watsonii Standl. -- accepted
  Croton websteri Mart. Gord. & J. Jiménez Ram. -- accepted
  Croton weismannii Cogn. & Marchand -- not accepted
  Croton wellensii De Wild. -- accepted
  Croton welwitschianus Müll. Arg. -- not accepted
  Croton wigginsii L.C. Wheeler -- accepted -- Wiggins' croton
  Croton wigmannii B.S. Williams -- not accepted
  Croton willdenowii G.L. Webster -- not accepted -- two-fruit rushfoil, Willdenow's croton
  Croton williamsii Rusby -- accepted
  Croton wissmannii O. Schwartz -- accepted
  Croton wittianus Ule -- accepted
  Croton womersleyi Airy Shaw -- accepted
  Croton wullschlaegelianus Müll. Arg. -- not accepted
  Croton xalapensis Kunth -- accepted
  Croton xalapensis Hook. f. -- not accepted
  Croton xanthochloros Croizat -- not accepted
  Croton xanthochylus Croizat -- accepted
  Croton yacaensis Croizat -- accepted
  Croton yanhuii Y.T. Chang -- accepted
  Croton yavitensis Croizat -- accepted
  Croton yecorensis V.W. Steinm. & Felger -- accepted
  Croton yerbalium Chodat & Hassl. -- accepted
  Croton ynesae Croizat -- accepted
  Croton ypanemensis Müll. Arg. -- accepted
  Croton ysabelae Croizat -- accepted
  Croton yucatanensis Lundell -- accepted
  Croton yungensis Croizat -- accepted
  Croton yunnanensis W.W. Sm. -- accepted
  Croton yunnanensis var. megadontus W.T. Wang -- not accepted
  Croton yunquensis Griseb. -- not accepted
  Croton zambalensis Merr. -- accepted
  Croton zambesicus Müll. Arg. -- not accepted
  Croton zavaletae Conz. ex Rzed. & al. -- accepted
  Croton zeylanicus Müll. Arg. -- accepted
  Croton zollingeri Miq. -- not accepted
  Crotonopsis abnormis Baill. -- not accepted
  Crotonopsis argentea Pursh -- not accepted
  Crotonopsis argentea f. abnormis (Baill.) Müll. Arg. -- not accepted
  Crotonopsis argentea var. elliptica (Willd.) Pursh -- not accepted
  Crotonopsis argentea var. linearis (Michx.) Pursh -- not accepted
  Crotonopsis elliptica Willd. -- not accepted
  Crotonopsis linearis Michx. -- not accepted
  Crotonopsis spinosa Nash -- not accepted
  Ctenadena Prokh. -- not accepted
  Ctenadena lanata (Sieber ex Spreng.) Prokh. -- not accepted
  Cubanthus Millsp. -- not accepted
  Cubanthus brittonii Millsp. -- not accepted
  Cubanthus linearifolius (Griseb.) Millsp. -- not accepted
  Cubanthus umbelliformis Urb. & Ekman -- not accepted
  Cyathophora Raf. -- not accepted
  Cyathophora ciliata Raf. -- not accepted
  Cyathophora heterophyla (L.) Raf. -- not accepted
  Cyathophora picta Raf. -- not accepted
  Cyclostigma denticulatum Klotzsch -- not accepted
  Cyclostigma panamense Klotzsch -- not accepted
  Cystidospermum Prokh. -- not accepted
  Cystidospermum cheirolepis (Fisch. & C.A. Mey. ex Ledeb.) Prokh. -- not accepted
  Cystidospermum petiolatum (Banks & Sol.) Nasimova -- not accepted
  Cystidospermum postii (Boiss.) Prokh. -- not accepted
  Dactylanthes Haw. -- not accepted
  Dactylanthes anacantha (Aiton) Haw. -- not accepted
  Dactylanthes globosa Haw. -- not accepted
  Dactylanthes hamata Haw. -- not accepted
  Dactylanthes medusa Raf. -- not accepted
  Dactylanthes patula (Mill.) Haw. -- not accepted
  Dalechampia L. -- accepted
  Dalechampia bidentata Blume -- accepted
  Dematra Raf. -- not accepted
  Dematra cheirolepis (Fisch. & C.A. Mey. ex Ledeb.) Soják -- not accepted
  Dematra petiolata (Banks & Sol.) Soják -- not accepted
  Dematra sericea Raf. -- not accepted
  Desmonema Raf. -- not accepted
  Desmonema hirta (L.) Raf. -- not accepted
  Diadenaria Klotzsch & Garcke -- not accepted
  Diadenaria articulata Klotzsch & Garcke -- not accepted
  Diadenaria involucrata Klotzsch & Garcke -- not accepted
  Diadenaria pavonis Klotzsch & Garcke -- not accepted
  Dichrophyllum bicolor (Engelm. & A. Gray) Klotzsch & Garcke -- not accepted
  Dichrophyllum jolkinii (Boiss.) F.C. Ho -- not accepted
  Dichrophyllum marginatum (Pursh) Klotzsch & Garcke -- not accepted
  Dichrophyllum variegatum (Sims) Klotzsch & Garcke -- not accepted
  Dichylium Britton -- not accepted
  Dichylium oerstedianum (Klotzsch & Garcke) Britton -- not accepted
  Diplocyathium Heinr. Schmidt -- not accepted
  Diplocyathium capitulatum (Rchb.) Heinr. Schmidt -- not accepted
  Ditaxis Vahl ex A. Juss. -- accepted -- silverbush
  Ditaxis argothamnoides (Bertero ex Spreng.) Radcl.-Sm. & Govaerts -- accepted -- Blodgett's silverbush
  Ditaxis malpighipila (Hicken) L.C. Wheeler -- accepted
  Ditritra Raf. -- not accepted
  Ditritra hirta (L.) Raf. -- not accepted
  Ditritra obliqua Raf. -- not accepted
  Ditritra rotundifolia Raf. -- not accepted
  Elaeophorbia Stapf -- not accepted
  Elaeophorbia acuta N.E. Br. -- not accepted
  Elaeophorbia beillei (A. Chev.) Jacobsen -- not accepted
  Elaeophorbia drupifera (Thonn.) Stapf -- not accepted
  Elaeophorbia grandifolia (Haw.) Croizat -- not accepted
  Elaeophorbia hiernii Croizat -- not accepted
  Elaeophorbia leonensis (N.E. Br.) Jacobsen -- not accepted
  Elaeophorbia neriifolia (L.) A. Chev. -- not accepted
  Elaeophorbia teke (Schweinf. ex Pax) A. Chev. -- not accepted
  Endadenium L.C. Leach -- not accepted
  Endadenium gossweileri (N.E. Br.) L.C. Leach -- not accepted
  Endoisila Raf. -- not accepted
  Endoisila myrsinites (L.) Raf. -- not accepted
  Epurga Fourr. -- not accepted
  Epurga lathyris (L.) Fourr. -- not accepted
  Eremocarpus setiger (Hook.) Benth. -- not accepted
  Esula Haw. -- not accepted
  Esula aleppica (L.) Fourr. -- not accepted
  Esula amygdaloides (L.) Haw. -- not accepted
  Esula angustifolia Haw. -- not accepted
  Esula ararica (Jord.) Fourr. -- not accepted
  Esula biumbellata (Poir.) Haw. -- not accepted
  Esula characias (L.) Haw. -- not accepted
  Esula corsica (Req.) Gand. -- not accepted
  Esula cupressina Gray -- not accepted
  Esula cyparissias (L.) Haw. -- not accepted
  Esula dalechampii Haw. -- not accepted
  Esula dendroides (L.) Haw. -- not accepted
  Esula diffusa (Jacq.) Haw. -- not accepted
  Esula exigua (L.) Haw. -- not accepted
  Esula falcata (L.) Haw. -- not accepted
  Esula gerardiana (Jacq.) Fourr. -- not accepted
  Esula juncoides Haw. -- not accepted
  Esula major Garsault -- not accepted
  Esula minima Haw. -- not accepted
  Esula minor Garsault -- not accepted
  Esula nicaeensis (All.) Fourr. -- not accepted
  Esula obscura (Loisel.) Fourr. -- not accepted
  Esula paralias (L.) Fourr. -- not accepted
  Esula peploides (Gouan) Fourr. -- not accepted
  Esula peplus (L.) Haw. -- not accepted
  Esula pinea (L.) Fourr. -- not accepted
  Esula pithyusa (L.) Fourr. -- not accepted
  Esula portlandica (L.) Haw. -- not accepted
  Esula provincialis (Willd.) Haw. -- not accepted
  Esula pseudocyparissias (Jord.) Fourr. -- not accepted
  Esula retusa (Forssk.) Fourr. -- not accepted
  Esula riparia (Jord.) Fourr. -- not accepted
  Esula rotundifolia (Lam.) Gray -- not accepted
  Esula salicetorum (Jord.) Fourr. -- not accepted
  Esula segetalis (L.) Haw. -- not accepted
  Esula sulcata (Lens ex Loisel.) Fourr. -- not accepted
  Esula sylvatica (L.) Haw. -- not accepted
  Esula taurinensis (All.) Fourr. -- not accepted
  Esula tenuifolia (Lam.) Fourr. -- not accepted
  Esula terracina (L.) Fourr. -- not accepted
  Esula tricuspidata (Lapeyr.) Fourr. -- not accepted
  Esula valentina (Ortega) Haw. -- not accepted
  Esula virgata Haw. -- not accepted
  Esula vulgaris Fourr. -- not accepted
  Eumecanthus Klotzsch & Garcke -- not accepted
  Eumecanthus adiantoides (Lam.) Millsp. -- not accepted
  Eumecanthus arenarius (Kunth) Klotzsch & Garcke -- not accepted
  Eumecanthus ariensis (Kunth) Klotzsch & Garcke -- not accepted
  Eumecanthus armourii (Millsp.) Millsp. -- not accepted
  Eumecanthus astroites (Fisch. & C.A. Mey.) Millsp. -- not accepted
  Eumecanthus barnesii (Millsp.) Millsp. -- not accepted
  Eumecanthus benthamianus Klotzsch & Garcke -- not accepted
  Eumecanthus bifurcatus (Engelm.) Millsp. -- not accepted
  Eumecanthus boerhaviifolius (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus bracteatus (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus calcicola (Fernald) Millsp. -- not accepted
  Eumecanthus chiapensis (Brandegee) Millsp. -- not accepted
  Eumecanthus cofradianus (Brandegee) Millsp. -- not accepted
  Eumecanthus colimae (Rose) Millsp. -- not accepted
  Eumecanthus delicatulus (Boiss.) Millsp. -- not accepted
  Eumecanthus digitatus (S. Watson) Millsp. -- not accepted
  Eumecanthus dioscoreoides (Boiss.) Millsp. -- not accepted
  Eumecanthus discolor (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus francoanus (Boiss.) Millsp. -- not accepted
  Eumecanthus gramineus (Jacq.) Millsp. -- not accepted
  Eumecanthus guadalajaranus (S. Watson) Millsp. -- not accepted
  Eumecanthus hoffmannii (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus humayensis (Brandegee) Millsp. -- not accepted
  Eumecanthus latericolor (Brandegee) Millsp. -- not accepted
  Eumecanthus mexicanus (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus microappendiculatus (Lotsy) Millsp. -- not accepted
  Eumecanthus monanthus (C. Wright ex Boiss.) Millsp. -- not accepted
  Eumecanthus multisetus (Benth.) Millsp. -- not accepted
  Eumecanthus muscicola (Fernald) Millsp. -- not accepted
  Eumecanthus ocymoideus (L.) Millsp. -- not accepted
  Eumecanthus pedunculosus (A. Rich.) Millsp. -- not accepted
  Eumecanthus physalifolius (Boiss.) Millsp. -- not accepted
  Eumecanthus pubescens (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus segoviensis (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus sinaloensis (Brandegee) Millsp. -- not accepted
  Eumecanthus subpeltatus (S. Watson) Millsp. -- not accepted
  Eumecanthus subreniformis (S. Watson) Millsp. -- not accepted
  Eumecanthus subsinuatus (Klotzsch & Garcke) Millsp. -- not accepted
  Eumecanthus tener (S. Watson) Millsp. -- not accepted
  Eumecanthus triphyllus Klotzsch & Garcke -- not accepted
  Eumecanthus umbrosus (Bertero ex Spreng.) Millsp. -- not accepted
  Eumecanthus violaceus (Greenm.) Millsp. -- not accepted
  Eumecanthus xalapensis (Kunth) Millsp. -- not accepted
  Eumecanthus xbacensis (Millsp.) Millsp. -- not accepted
  Eumecanthus zierioides (Boiss.) Millsp. -- not accepted
  Euphorbia L. -- accepted -- spurge
  Euphorbia aaron-rossii A.H. Holmgren & N.H. Holmgren -- accepted -- Marble Canyon spurge, Ross spurge
  Euphorbia abbottii Baker -- accepted
  Euphorbia abbreviata Correll -- not accepted
  Euphorbia abchazica Woronow -- not accepted
  Euphorbia abdelkuri Balf. f. -- accepted -- Firhadh
  Euphorbia abdita (D.G. Burch) Radcl.-Sm. -- accepted
  Euphorbia abdulghafooriana Abedin -- accepted
  Euphorbia abolinii Korovin ex Pavlov -- not accepted
  Euphorbia abortiva Porta -- not accepted
  Euphorbia abramsiana L.C. Wheeler -- accepted -- Abrams' sandmat
  Euphorbia abscondita Mayfield -- accepted
  Euphorbia abyssinica J.F. Gmel. -- accepted
  Euphorbia abyssinica var. erythraeae Berger -- not accepted
  Euphorbia abyssinica var. mozambicensis Boiss. -- not accepted
  Euphorbia abyssinica var. tetragona Schweinf. -- not accepted
  Euphorbia acalyphoides Hochst. ex Boiss. -- accepted
  Euphorbia acalyphoides ssp. acalyphoides Hochst. ex Boiss. -- accepted
  Euphorbia acalyphoides ssp. cicatricosa S. Carter -- accepted
  Euphorbia acalyphoides var. arabica Boiss. -- not accepted
  Euphorbia acanthodes Akhani -- accepted
  Euphorbia acanthothamnos Heldr. & Sart. ex Boiss. -- accepted
  Euphorbia acaulis Roxb. -- not accepted
  Euphorbia acerensis Boiss. -- accepted
  Euphorbia acervata S. Carter -- accepted
  Euphorbia achanocarpa Guss. ex Spreng. -- not accepted
  Euphorbia acrurensis N.E. Br. -- not accepted
  Euphorbia actinoclada S. Carter -- accepted
  Euphorbia aculeata E. Mey. -- not accepted
  Euphorbia acuminata Lam. -- not accepted
  Euphorbia acuta Engelm. -- accepted -- Pointed sandmat
  Euphorbia acuta var. stenophylla Boiss. -- not accepted
  Euphorbia acutifolia (Boiss.) Rech. f. -- not accepted
  Euphorbia adenensis Deflers -- not accepted
  Euphorbia adenochila S. Carter -- accepted
  Euphorbia adenochlora C. Morren & Decne. -- accepted
  Euphorbia adenopoda Baill. -- accepted
  Euphorbia adenoptera Bertol. -- accepted -- southern Florida sandmat
  Euphorbia adenoptera ssp. adenoptera Bertol. -- accepted
  Euphorbia adenoptera ssp. canescens (Proctor) Oudejans -- accepted
  Euphorbia adenoptera ssp. gundlachii (Urb.) Oudejans -- accepted
  Euphorbia adenoptera var. indivisa (Engelm.) Boiss. -- not accepted
  Euphorbia adhaerens (Small) Jabl. -- not accepted
  Euphorbia adiantoides Lam. -- accepted
  Euphorbia adinophylla Donn. Sm. -- not accepted
  Euphorbia adjurana P.R.O. Bally & S. Carter -- accepted
  Euphorbia adriana A. St.-Hil. ex Klotzsch & Garcke -- not accepted
  Euphorbia aegyptiaca Boiss. -- not accepted
  Euphorbia aegyptiaca var. indica Boiss. -- not accepted
  Euphorbia aellenii Rech. f. -- not accepted
  Euphorbia aequoris N.E. Br. -- accepted
  Euphorbia aeruginosa Schweick. -- accepted
  Euphorbia aethiopum Croizat -- not accepted
  Euphorbia affinis DC. -- not accepted
  Euphorbia affinis (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia afzelii N.E. Br. -- not accepted
  Euphorbia agatheae Haevermans -- accepted
  Euphorbia aggregata A. Berger -- accepted
  Euphorbia aggregata var. alternicolor (N.E. Br.) A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia agowensis Hochst. ex Boiss. -- accepted
  Euphorbia agowensis var. agowensis Hochst. ex Boiss. -- accepted
  Euphorbia agowensis var. pseudoholstii (Pax) P.R.O. Bally & S. Carter -- accepted
  Euphorbia agraria M. Bieb. -- accepted -- urban spurge
  Euphorbia agraria var. csatoi Simonk. -- not accepted
  Euphorbia agraria var. subhastata (Vis. & Pancic) Gris -- not accepted
  Euphorbia agraria var. thyrsiflora (Griseb.) Nyman -- not accepted
  Euphorbia agrorum Willd. ex Ledeb. -- not accepted
  Euphorbia akdaghensis Stapf -- not accepted
  Euphorbia akenocarpa Guss. -- accepted
  Euphorbia akenocarpa Roux & Blaise ex Boiss. -- not accepted
  Euphorbia alaica (Prokh.) Prokh. -- accepted
  Euphorbia alainii Oudejans -- accepted
  Euphorbia alata Hook. -- accepted
  Euphorbia alatavica Boiss. -- accepted
  Euphorbia alatavica f. kaschgarica (Regel) Baikov -- not accepted
  Euphorbia alatocaulis V.W. Steinm. & Felger -- accepted
  Euphorbia albanica N.E. Br. -- accepted
  Euphorbia albicaulis Rydb. -- not accepted
  Euphorbia albiflora Taub. -- not accepted
  Euphorbia albipollinifera L.C. Leach -- accepted
  Euphorbia albomarginata Torr. & A. Gray -- accepted -- whitemargin sandmat, Rattlesnake weed, white-margin sandmat, white-margin sandwort
  Euphorbia albovillosa Pax -- not accepted
  Euphorbia alcicornis Baker -- accepted
  Euphorbia alcicornis Poiss. -- not accepted
  Euphorbia aleppica L. -- accepted
  Euphorbia alexandrina Delile -- not accepted
  Euphorbia alfredii Rauh -- accepted
  Euphorbia algeriensis Boiss. -- not accepted
  Euphorbia aliceae A. Nelson -- not accepted
  Euphorbia allocarpa S. Carter -- accepted
  Euphorbia alluaudii Drake -- accepted
  Euphorbia alluaudii ssp. alluaudii Drake -- accepted
  Euphorbia alluaudii ssp. oncoclada (Drake) F. Friedmann & Cremers -- accepted
  Euphorbia alpigena A. Kern. -- not accepted
  Euphorbia alpina Ledeb. -- accepted
  Euphorbia alpina var. baikalensis Boiss. -- not accepted
  Euphorbia alpina var. rupicola Baikov -- not accepted
  Euphorbia alsiniflora Baill. -- accepted
  Euphorbia alsinifolia Boiss. -- accepted
  Euphorbia alsinoides Miq. -- accepted
  Euphorbia alta Norton -- accepted -- giant spurge
  Euphorbia altaica Ledeb. -- accepted
  Euphorbia altaica var. pilosa Stschegl. -- not accepted
  Euphorbia altaica var. sajanensis Boiss. -- not accepted
  Euphorbia alternicolor N.E. Br. -- not accepted
  Euphorbia altissima Boiss. -- accepted
  Euphorbia altissima var. altissima Boiss. -- accepted
  Euphorbia altissima var. glabrescens Boiss. ex M.S. Khan -- accepted
  Euphorbia altissima var. nuda Velen. -- not accepted
  Euphorbia altotibetica Paulsen -- accepted
  Euphorbia amandi Oudejans -- accepted
  Euphorbia amarifontana N.E. Br. -- accepted
  Euphorbia ambacensis N.E. Br. -- accepted
  Euphorbia ambarivatoensis Rauh & Bard.-Vauc. -- accepted
  Euphorbia ambatofinandranae Leandri -- not accepted
  Euphorbia ambigua Waldst. & Kit. ex Willd. -- not accepted
  Euphorbia ambovombensis Rauh & Razaf. -- accepted
  Euphorbia ambroseae L.C. Leach -- accepted
  Euphorbia ambroseae var. ambroseae L.C. Leach -- accepted
  Euphorbia ambroseae var. spinosa L.C. Leach -- accepted
  Euphorbia ambukensis Stepanov -- not accepted
  Euphorbia amicorum S. Carter -- accepted
  Euphorbia ammak Schweinf. -- accepted
  Euphorbia ammannioides Kunth -- not accepted
  Euphorbia ammatotricha Boiss. -- not accepted
  Euphorbia ammophila S. Carter & Dioli -- accepted
  Euphorbia amoena Klotzsch -- not accepted
  Euphorbia amphimalaca Standl. -- not accepted
  Euphorbia ampla Hook. f. -- not accepted
  Euphorbia ampla var. tenuior Hook. f. -- not accepted
  Euphorbia amplexicaulis Hook. f. -- accepted
  Euphorbia amplexicaulis Ledeb. -- not accepted
  Euphorbia amplophylla Pax -- accepted
  Euphorbia amygdaloides L. -- accepted
  Euphorbia amygdaloides Lam. -- not accepted
  Euphorbia amygdaloides f. biennis (Maire) Oudejans -- not accepted
  Euphorbia amygdaloides f. ligulata (Chaub.) O. Bolòs & Vigo -- not accepted
  Euphorbia amygdaloides f. minor (Gaudin) Oudejans -- not accepted
  Euphorbia amygdaloides f. purpurata (Coss. & Germ.) Oudejans -- not accepted
  Euphorbia amygdaloides ssp. amygdaloides L. -- accepted
  Euphorbia amygdaloides ssp. arbuscula Meusel -- accepted
  Euphorbia amygdaloides ssp. chaixiana (Timb.-Lagr.) Nyman -- not accepted
  Euphorbia amygdaloides ssp. heldreichii (Orph. ex Boiss.) Aldén -- not accepted
  Euphorbia amygdaloides ssp. robbiae (Turrill) Stace -- accepted
  Euphorbia amygdaloides ssp. semiperfoliata (Viv.) Radcl.-Sm. -- not accepted
  Euphorbia amygdaloides var. biennis Maire -- not accepted
  Euphorbia amygdaloides var. chaixiana (Timb.-Lagr.) Boiss. -- not accepted
  Euphorbia amygdaloides var. ligulata (Chaub.) Boiss. -- not accepted
  Euphorbia amygdaloides var. oblongifolia K. Koch -- not accepted
  Euphorbia amygdaloides var. robbiae (Turrill) Radcl.-Sm. -- not accepted
  Euphorbia anacampseroides Lam. -- not accepted
  Euphorbia anacampseros Boiss. -- accepted
  Euphorbia anacampseros Balansa ex Boiss. -- not accepted
  Euphorbia anacampseros var. anacampseros Boiss. -- accepted
  Euphorbia anacampseros var. minor Boiss. -- not accepted
  Euphorbia anacampseros var. tmolae M.S. Khan -- accepted
  Euphorbia anacantha Aiton -- not accepted
  Euphorbia anachoreta Svent. -- accepted
  Euphorbia anagalloides Baker -- not accepted
  Euphorbia analalavensis Leandri -- accepted
  Euphorbia analamerae Leandri -- accepted
  Euphorbia analavelonensis Rauh & Mangelsdorff -- accepted
  Euphorbia anceps Benth. -- not accepted
  Euphorbia ancyrensis Azn. ex M.S. Khan -- not accepted
  Euphorbia anderssonii Millsp. -- not accepted
  Euphorbia andina Phil. -- not accepted
  Euphorbia andongensis Hiern -- not accepted
  Euphorbia andrachnoides Schrenk -- accepted
  Euphorbia andromedae Millsp. -- not accepted
  Euphorbia androsaemifolia Willd. ex Schlecht. -- accepted
  Euphorbia androsaemifolia (Haw.) Steud. -- not accepted
  Euphorbia androsaemifolia J. Presl & C. Presl -- not accepted
  Euphorbia androsaemifolia ssp. salicetorum (Jord.) Nyman -- not accepted
  Euphorbia androsaemoides Dennst. -- not accepted
  Euphorbia angolensis Pax -- not accepted
  Euphorbia angrae N.E. Br. -- accepted
  Euphorbia angularis Klotzsch -- accepted
  Euphorbia angulata Jacq. -- accepted
  Euphorbia angulata f. nemoralis Oudejans -- not accepted
  Euphorbia angulata ssp. deseglisei (Boreau ex Boiss.) Nyman -- not accepted
  Euphorbia angulata var. expansa (Janka) Boiss. -- not accepted
  Euphorbia angusta Engelm. -- accepted -- Blackfoot sandmat, narrow-leaf spurge
  Euphorbia angustiflora Pax -- accepted
  Euphorbia angustifolia (Haw.) Steud. -- not accepted
  Euphorbia angustifolia Lockh. ex G. Don -- not accepted
  Euphorbia angustifolia Buch.-Ham. ex D. Don -- not accepted
  Euphorbia angustifolia Parodi -- not accepted
  Euphorbia anisopetala (Prokh.) Prokh. -- accepted
  Euphorbia ankaranae Leandri -- accepted
  Euphorbia ankarensis Boiteau -- accepted
  Euphorbia ankazobensis Rauh & Hofstätter -- accepted
  Euphorbia annamarieae Rauh -- accepted
  Euphorbia annulata Nutt. ex Sherff -- not accepted
  Euphorbia anomala Salzm. ex Boiss. -- not accepted
  Euphorbia anomala Pax -- not accepted
  Euphorbia antankara Leandri -- not accepted
  Euphorbia anthonyi Brandegee -- accepted
  Euphorbia anthonyi var. clarionensis (Brandegee) I.M. Johnst. -- not accepted
  Euphorbia anthula Lavrent. & Papan. -- accepted
  Euphorbia antilibanotica Mouterde -- accepted
  Euphorbia antiquorum L. -- accepted
  Euphorbia antiquorum var. polygona Boiss. -- not accepted
  Euphorbia antisyphilitica Zucc. -- accepted -- candelilla
  Euphorbia antisyphilitica var. luxurians Miranda -- not accepted
  Euphorbia antisyphilitica var. typica Miranda -- not accepted
  Euphorbia antonii Oudejans -- accepted
  Euphorbia antso Denis -- accepted -- Antso
  Euphorbia anychioides Boiss. -- accepted
  Euphorbia apatzingana McVaugh -- accepted
  Euphorbia aphylla Brouss. ex Willd. -- accepted
  Euphorbia apicata L.C. Wheeler -- accepted
  Euphorbia apiculata Andersson -- not accepted
  Euphorbia apios L. -- accepted
  Euphorbia apios var. lamprocarpa Boiss. -- not accepted
  Euphorbia apocynifolia Small -- not accepted
  Euphorbia apocynoides Klotzsch -- not accepted
  Euphorbia appariciana Rizzini -- accepted
  Euphorbia appendiculata P.R.O. Bally & S. Carter -- accepted
  Euphorbia applanata Thulin & Al-Gifri -- accepted
  Euphorbia aprica Baill. -- accepted
  Euphorbia apurimacensis Croizat -- accepted
  Euphorbia arabica Hochst. & Steud. ex Anderson -- accepted
  Euphorbia arabica var. brevifolia Boiss. -- not accepted
  Euphorbia arabica var. latippendiculata Pax -- not accepted
  Euphorbia arabicoides N.E. Br. -- accepted
  Euphorbia aragonensis Loscos & Pardo -- not accepted
  Euphorbia aragonensis ssp. bolosii (Molero & Rovira) Rivas Mart. -- not accepted
  Euphorbia aragonensis var. lanceolatifolia Loscos & Pardo ex Lange -- not accepted
  Euphorbia arahaka Poiss. -- accepted -- Arahaka, Arahaky
  Euphorbia ararica Jord. -- not accepted
  Euphorbia araucana Phil. -- accepted
  Euphorbia arborescens Roxb. -- not accepted
  Euphorbia arborescens E. Mey. -- not accepted
  Euphorbia arborescens C. Sm. -- not accepted
  Euphorbia arborescens Boiss. -- not accepted
  Euphorbia arborescens Salm-Dyck -- not accepted
  Euphorbia arbuscula Balf. f. -- accepted
  Euphorbia ardonensis Galushko -- accepted
  Euphorbia arenaria Kunth -- accepted
  Euphorbia arenaria Engelm. & A. Gray -- not accepted
  Euphorbia arenaria Nutt. -- not accepted
  Euphorbia arenaria Willd. ex Ledeb. -- not accepted
  Euphorbia arenaria var. quitensis Boiss. -- not accepted
  Euphorbia arenarioides Gagnep. -- accepted
  Euphorbia arenicola Parish -- not accepted
  Euphorbia argillosa Chodat & Hassl. -- accepted
  Euphorbia arguta Banks & Sol. -- accepted
  Euphorbia arguta var. dasycarpa Plitmann -- not accepted
  Euphorbia arida N.E. Br. -- accepted
  Euphorbia ariensis Kunth -- accepted
  Euphorbia ariensis var. villicaulis Fernald -- not accepted
  Euphorbia arillata Edgew. -- not accepted
  Euphorbia aristata Schmalh. -- accepted
  Euphorbia arkansana Engelm. & A. Gray -- not accepted
  Euphorbia arkansana var. atrosemina Norton -- not accepted
  Euphorbia arkansana var. coloradensis Norton -- not accepted
  Euphorbia arkansana var. missouriensis Norton -- not accepted
  Euphorbia armata Thunb. -- not accepted
  Euphorbia armena Boiss. -- not accepted
  Euphorbia armeniaca Boiss. -- not accepted
  Euphorbia armourii Millsp. -- accepted
  Euphorbia armstrongiana Boiss. -- accepted
  Euphorbia arnottiana Endl. -- accepted -- `akoko
  Euphorbia arnottiana var. integrifolia (Hillebr.) H. St. John -- not accepted
  Euphorbia arrecta N.E. Br. -- accepted
  Euphorbia arsenariensis (Batt.) Batt. & Trab. -- not accepted
  Euphorbia artaudiana DC. -- not accepted
  Euphorbia arteagae W.R. Buck & Huft -- accepted
  Euphorbia articulata Burm. in C. Plumier -- not accepted
  Euphorbia articulata Dennst. -- not accepted
  Euphorbia articulata Andersson -- not accepted
  Euphorbia articulata var. bindloensis A. Stewart -- not accepted
  Euphorbia articulata var. lordatii Stehlé & Stehlé -- not accepted
  Euphorbia artifolia N.E. Br. -- accepted
  Euphorbia artvinensis Bornm. & Woronow -- not accepted
  Euphorbia arundelana Bartlett -- not accepted
  Euphorbia arvalis Boiss. & Heldr. -- accepted
  Euphorbia arvalis ssp. arvalis Boiss. & Heldr. -- accepted
  Euphorbia arvalis ssp. longistyla (Litard. & Maire) Molero, Rovira & Vicens -- accepted
  Euphorbia arvalis var. euarvalis Maire -- not accepted
  Euphorbia arvalis var. longistyla Litard. & Maire -- not accepted
  Euphorbia arvensis Kit. -- not accepted
  Euphorbia arvensis Schleich. ex Steud. -- not accepted
  Euphorbia ascendens Willd. ex Boiss. -- not accepted
  Euphorbia asclepiadea Milne-Redh. -- accepted
  Euphorbia aserbajdzhanica Bordz. -- accepted
  Euphorbia aspera M. Bieb. -- not accepted
  Euphorbia aspera var. oligadenia Boiss. -- not accepted
  Euphorbia aspera var. serrata Boiss. -- not accepted
  Euphorbia aspericaulis Pax -- accepted
  Euphorbia asperifolia Engelm. ex Boiss. -- not accepted
  Euphorbia asthenacantha S. Carter -- accepted
  Euphorbia astrachanica C.A. Mey. ex Claus -- accepted
  Euphorbia astrispina N.E. Br. -- not accepted
  Euphorbia astroites Fisch. & C.A. Mey. -- not accepted
  Euphorbia astroites var. heterappendiculata Millsp. -- not accepted
  Euphorbia astyla Engelm. ex Boiss. -- accepted -- alkali sandmat, Pecos spurge
  Euphorbia atlantica Pers. -- not accepted
  Euphorbia atlantica Coss. ex Boiss. -- not accepted
  Euphorbia atlantica var. leiocarpa Boiss. -- not accepted
  Euphorbia atlantica var. major Boiss. -- not accepted
  Euphorbia atlantica var. villosa Faure & Maire -- not accepted
  Euphorbia atlantis Maire -- not accepted
  Euphorbia atlantis f. major (Boiss.) Vindt -- not accepted
  Euphorbia atlantis var. leiocarpa (Boiss.) Oudejans -- not accepted
  Euphorbia atlantis var. major (Boiss.) Oudejans -- not accepted
  Euphorbia atlantis var. villosa (Faure & Maire) Vindt -- not accepted
  Euphorbia atoto G. Forst. -- accepted
  Euphorbia atoto var. imbricata Boiss. -- not accepted
  Euphorbia atoto var. minor Boiss. -- not accepted
  Euphorbia atrocarmesina L.C. Leach -- accepted
  Euphorbia atrocarmesina ssp. arborea L.C. Leach -- accepted
  Euphorbia atrocarmesina ssp. atrocarmesina L.C. Leach -- accepted
  Euphorbia atrococca A. Heller -- accepted -- koko
  Euphorbia atrococca var. kilaueana Sherff -- not accepted
  Euphorbia atrococca var. kokeeana Sherff -- not accepted
  Euphorbia atrococca var. typica Sherff -- not accepted
  Euphorbia atroflora S. Carter -- accepted
  Euphorbia atropurpurea Brouss. ex Willd. -- accepted
  Euphorbia atropurpurea f. atropurpurea Brouss. ex Willd. -- accepted
  Euphorbia atropurpurea f. lutea A. Santos -- accepted
  Euphorbia atropurpurea var. modesta Svent. -- not accepted
  Euphorbia atrorubens Engelm. ex Boiss. -- not accepted
  Euphorbia atrosanguinea Poepp. ex Klotzsch -- not accepted
  Euphorbia atrox F.K. Horw. ex S. Carter -- accepted
  Euphorbia attastoma Rizzini -- accepted
  Euphorbia attastoma var. xanthochlora Rizzini -- not accepted
  Euphorbia aubryana Baill. -- not accepted
  Euphorbia aucheri Boiss. -- accepted
  Euphorbia aulacosperma Boiss. -- accepted
  Euphorbia aulacosperma var. fossulata (Boiss. & Gaill.) Boiss. -- not accepted
  Euphorbia aureocincta Croizat -- not accepted
  Euphorbia aureoviridiflora (Rauh) Rauh -- accepted
  Euphorbia auricularia Boiss. -- not accepted
  Euphorbia australis Boiss. -- accepted
  Euphorbia australis var. canescens Domin -- not accepted
  Euphorbia australis var. erythrantha (F. Muell.) Benth. -- not accepted
  Euphorbia australis var. glabrescens Boiss. -- not accepted
  Euphorbia australis var. glaucescens Boiss. -- not accepted
  Euphorbia australis var. potentillina Baill. -- not accepted
  Euphorbia australis var. semiglabra Domin -- not accepted
  Euphorbia australis var. subtomentosa Domin -- not accepted
  Euphorbia australis var. typica Domin -- not accepted
  Euphorbia austriaca A. Kern. -- accepted
  Euphorbia austriaca ssp. sojakii Chrtek & Krísa -- not accepted
  Euphorbia austrina (Small) Jabl. -- not accepted
  Euphorbia austro-occidentalis Thell. -- accepted
  Euphorbia austroanatolica Hub.-Mor. & M.S. Khan -- accepted
  Euphorbia austrotexana Mayfield -- accepted
  Euphorbia austrotexana var. austrotexana Mayfield -- accepted
  Euphorbia austrotexana var. carrii Mayfield -- accepted
  Euphorbia avasmontana Dinter -- accepted
  Euphorbia avenia Thibaut ex Pers. -- not accepted
  Euphorbia awashensis M.G. Gilbert -- accepted
  Euphorbia azorica Hochst. -- accepted -- Erva-leitera
  Euphorbia azorica Welw. ex Boiss. -- not accepted
  Euphorbia babensis Kit. -- not accepted
  Euphorbia bachmannii Pax -- not accepted
  Euphorbia backeri Pax & K. Hoffm. -- not accepted
  Euphorbia baetica Boiss. -- accepted
  Euphorbia baga A. Chev. -- accepted
  Euphorbia baga var. baga A. Chev. -- accepted
  Euphorbia baga var. parvifolia L.E. Newton -- accepted
  Euphorbia bahiensis (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia baillonii Boiss. ex Baill. -- not accepted
  Euphorbia baioensis S. Carter -- accepted
  Euphorbia bakeriana Baill. -- not accepted
  Euphorbia balakrishnanii Binojk. & Gopalan -- accepted
  Euphorbia balearica Poir. ex Klotzsch & Garcke -- not accepted
  Euphorbia baleensis M.G. Gilbert -- accepted
  Euphorbia balkhanica Tarassov -- not accepted
  Euphorbia ballyana Rauh -- accepted
  Euphorbia ballyi S. Carter -- accepted
  Euphorbia balsamea Welw. ex Hiern -- not accepted
  Euphorbia balsamifera Aiton -- accepted
  Euphorbia balsamifera ssp. adenensis (Deflers) P.R.O. Bally -- accepted
  Euphorbia balsamifera ssp. balsamifera Aiton -- accepted
  Euphorbia balsamifera ssp. sepium (N.E. Br.) Maire -- not accepted
  Euphorbia banae Rauh -- accepted
  Euphorbia bancana Miq. -- not accepted
  Euphorbia baradii S. Carter -- accepted
  Euphorbia barbellata Hurus. -- not accepted
  Euphorbia barbellata Engelm. -- not accepted
  Euphorbia barbellata f. denudata (Hurus.) Kitag. -- not accepted
  Euphorbia barbellata var. imaii (Hurus.) Kitag. -- not accepted
  Euphorbia barbicarina (Millsp.) Standl. -- not accepted
  Euphorbia barbicollis P.R.O. Bally -- accepted
  Euphorbia bariensis S. Carter -- accepted
  Euphorbia barkeri Urb. & Ekman -- not accepted
  Euphorbia barnardii A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia barnesii (Millsp.) Oudejans -- accepted
  Euphorbia barnhartii Croizat -- not accepted
  Euphorbia barrelieri Savi -- accepted
  Euphorbia barrelieri ssp. barrelieri Savi -- accepted
  Euphorbia barrelieri ssp. carnica (Boiss.) Kuzmanov -- not accepted
  Euphorbia barrelieri ssp. hercegovina (Beck) Kuzmanov -- not accepted
  Euphorbia barrelieri ssp. thessala (Formánek) Bornm. -- accepted
  Euphorbia barrelieri var. carnica (Boiss.) Fiori -- not accepted
  Euphorbia barrelieri var. thessala (Formánek) K. Malý -- not accepted
  Euphorbia barteri N.E. Br. -- not accepted
  Euphorbia bartolomaei Greene -- accepted
  Euphorbia basarabica Prodán -- accepted
  Euphorbia basargica Prodán -- accepted
  Euphorbia baselicis Ten. -- not accepted
  Euphorbia baselicis ssp. thessala Formánek -- not accepted
  Euphorbia baselicis var. rupestris Friraldszky ex Boiss. -- not accepted
  Euphorbia basutica Marloth -- not accepted
  Euphorbia batabanensis Urb. -- not accepted
  Euphorbia baueri Engelm. ex Boiss. -- accepted
  Euphorbia baxanica Galushko -- not accepted
  Euphorbia bayeri L.C. Leach -- accepted
  Euphorbia baylissii L.C. Leach -- accepted
  Euphorbia beamanii M.C. Johnst. -- accepted
  Euphorbia beaumieriana Hook. f. & Coss. -- not accepted
  Euphorbia beckii V.W. Steinm. -- accepted
  Euphorbia begoniifolia Lehm. -- not accepted
  Euphorbia beharensis Leandri -- accepted
  Euphorbia beharensis var. adpressifolia Rauh -- accepted
  Euphorbia beharensis var. beharensis Leandri -- accepted
  Euphorbia beharensis var. guillemetii (Ursch & Leandri) Rauh -- accepted
  Euphorbia beharensis var. squarrosa Rauh -- accepted
  Euphorbia beharensis var. truncata Rauh -- accepted
  Euphorbia beillei A. Chev. -- accepted
  Euphorbia bejariensis DC. -- not accepted
  Euphorbia bemarahaensis Rauh & Mangelsdorff -- accepted
  Euphorbia benedicta Greene -- not accepted
  Euphorbia benguelensis Pax -- not accepted
  Euphorbia benthamii Hiern -- accepted
  Euphorbia berevoensis Lawant & Buddens. -- accepted
  Euphorbia bergeriana Dinter -- not accepted
  Euphorbia bermudiana Millsp. -- not accepted
  Euphorbia berorohae Rauh & Hofstätter -- accepted
  Euphorbia berotica N.E. Br. -- accepted
  Euphorbia bertemariae Bisseret & Dioli -- accepted
  Euphorbia berteroana Balb. ex Spreng. -- accepted -- Bertero's sandmat
  Euphorbia berthelotii Bolle ex Boiss. -- accepted
  Euphorbia berythea Boiss. & Blanche -- accepted
  Euphorbia besseri (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia betacea Baill. -- accepted
  Euphorbia betulicortex M.G. Gilbert -- accepted
  Euphorbia beuginii Rebmann -- accepted
  Euphorbia bevilaniensis Croizat -- not accepted
  Euphorbia biaculeata Denis -- accepted
  Euphorbia bialata Link -- not accepted
  Euphorbia bianoensis (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia bicapitata Brandegee -- not accepted
  Euphorbia bicephala Bertol. -- not accepted
  Euphorbia bicolor Engelm. & A. Gray -- accepted -- snow on the prairie, snow-on-the-prairie
  Euphorbia bicolor var. concolor Engelm. & A. Gray -- not accepted
  Euphorbia bicompacta Bruyns -- accepted
  Euphorbia bicompacta var. bicompacta Bruyns -- accepted
  Euphorbia bicompacta var. rubra (S. Carter) Bruyns -- accepted
  Euphorbia biconvexa Domin -- accepted
  Euphorbia bifida Thwaites -- not accepted
  Euphorbia bifida Hook. & Arn. -- accepted
  Euphorbia biformis S. Watson -- not accepted
  Euphorbia bifurcata Engelm. -- accepted -- forked spurge
  Euphorbia biglandulosa Desf. -- not accepted
  Euphorbia biglandulosa Boiss. -- not accepted
  Euphorbia biglandulosa Willd. -- not accepted
  Euphorbia biglandulosa var. mauretanica Maire -- not accepted
  Euphorbia biharamulensis S. Carter -- accepted
  Euphorbia bilobata Engelm. -- accepted -- blackseed spurge, black-seed spurge
  Euphorbia bilocularis N.E. Br. -- not accepted
  Euphorbia bimensis Miq. -- not accepted
  Euphorbia bindloensis (A. Stewart) Ya Yang -- accepted
  Euphorbia biramensis Urb. -- not accepted
  Euphorbia biselegans Bruyns -- accepted
  Euphorbia bisellenbeckii Bruyns -- accepted
  Euphorbia biserrata Millsp. -- not accepted
  Euphorbia bisglobosa Bruyns -- accepted
  Euphorbia bisulcata J.T. Howell -- not accepted
  Euphorbia bitataensis M.G. Gilbert -- accepted
  Euphorbia biumbellata Poir. -- accepted
  Euphorbia biumbellata Boiss. -- not accepted
  Euphorbia biuncialis McVaugh -- not accepted
  Euphorbia bivonae Steud. -- accepted
  Euphorbia bivonae ssp. bivonae Steud. -- accepted
  Euphorbia bivonae ssp. tunetana Murb. -- accepted
  Euphorbia bivonae var. mauritii Sennen -- not accepted
  Euphorbia bivonae var. melitensis (Parl.) Fiori -- not accepted
  Euphorbia bivonae var. montana Lojac. -- not accepted
  Euphorbia bivonae var. papillaris Boiss. -- not accepted
  Euphorbia bivonae var. tangerina Pau -- not accepted
  Euphorbia blanchetii Miq. ex Boiss. -- not accepted
  Euphorbia blatteri Oudejans -- accepted
  Euphorbia blepharophylla Ledeb. -- accepted
  Euphorbia blepharostipula Millsp. ex Rose -- not accepted
  Euphorbia blodgettii Engelm. ex Hitchc. -- accepted -- limestone sandmat
  Euphorbia bodenghieniae (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia bodinieri H. Lév. & Vaniot -- not accepted
  Euphorbia boerhaavioides Rusby -- accepted
  Euphorbia boerhaviifolia (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia boinensis Denis ex Humbert & Leandri -- accepted
  Euphorbia boissieri Baill. -- accepted
  Euphorbia boissieriana (Woronow) Prokh. -- not accepted
  Euphorbia boiteaui Leandri -- accepted
  Euphorbia boivinii Boiss. -- accepted
  Euphorbia boivinii var. boivinii Boiss. -- accepted
  Euphorbia boivinii var. minor Leandri -- accepted
  Euphorbia boivinii var. oreades Leandri -- accepted
  Euphorbia boliviana Rusby -- not accepted
  Euphorbia bolosii (Molero & Rovira) Molero & Rovira -- not accepted
  Euphorbia bolusii N.E. Br. -- not accepted
  Euphorbia bombaiensis Santapau -- not accepted
  Euphorbia bombensis Jacq. -- accepted -- Dixie sandmat
  Euphorbia bonae Mutel -- not accepted
  Euphorbia bongensis Kotschy & Peyr. ex Boiss. -- accepted
  Euphorbia bongolavensis Rauh -- accepted
  Euphorbia bonifaciensis Req. ex Gren. & Godr. -- not accepted
  Euphorbia bonplandii Sweet -- not accepted
  Euphorbia boophthona C.A. Gardner -- accepted
  Euphorbia borbonica Boiss. -- accepted
  Euphorbia borealis Baikov -- accepted
  Euphorbia borenensis M.G. Gilbert -- accepted
  Euphorbia borodinii Sambuk -- accepted
  Euphorbia borszczowii Prokh. -- not accepted
  Euphorbia bosseri Leandri -- accepted
  Euphorbia bothriosperma Boiss. & Kotschy -- not accepted
  Euphorbia botryoides Noronha -- not accepted
  Euphorbia bottae Boiss. -- not accepted
  Euphorbia bougheyi L.C. Leach -- accepted
  Euphorbia bouleyi S. Moore -- not accepted
  Euphorbia bounophila Boiss. -- not accepted
  Euphorbia bounophila var. aucheri (Boiss.) Boiss. -- not accepted
  Euphorbia bourgaeana J. Gay ex Boiss. -- accepted
  Euphorbia bracei Millsp. -- not accepted
  Euphorbia brachiata (E. Mey. ex Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia brachiata Jan -- not accepted
  Euphorbia brachycera Engelm. -- accepted -- horned spurge, shorthorn spurge
  Euphorbia brachycera f. dichotoma (Daniels) Oudejans -- not accepted
  Euphorbia brachycera var. greggii (Engelm. ex Boiss.) M.C. Johnst. -- not accepted
  Euphorbia brachycera var. robusta (Engelm.) Dorn -- not accepted
  Euphorbia brachyphylla Denis -- accepted
  Euphorbia bracteata Jacq. -- accepted
  Euphorbia bracteolaris Boiss. -- accepted
  Euphorbia brakdamensis N.E. Br. -- accepted
  Euphorbia brandegeei Millsp. -- accepted
  Euphorbia brasiliensis Lam. -- not accepted
  Euphorbia brasiliensis f. angustior Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis f. latior Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis f. major Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis f. pruinosa Chodat -- not accepted
  Euphorbia brasiliensis f. subsessilis Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis var. blanchetii (Miq. ex Boiss.) Boiss. -- not accepted
  Euphorbia brasiliensis var. genuina Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis var. hyssopifolia (L.) Boiss. -- not accepted
  Euphorbia brasiliensis var. lorentzii (Müll. Arg.) Griseb. -- not accepted
  Euphorbia brasiliensis var. paraguayensis Chodat -- not accepted
  Euphorbia brasiliensis var. pruinosa (Chodat) Chodat & Hassl. -- not accepted
  Euphorbia brasiliensis var. pulchella (Kunth) Boiss. -- not accepted
  Euphorbia brasiliensis var. uniflora Chodat & Hassl. -- not accepted
  Euphorbia brassii P.I. Forst. -- accepted
  Euphorbia braunsii N.E. Br. -- accepted
  Euphorbia bravoana Svent. -- accepted
  Euphorbia breonii Nois. -- not accepted
  Euphorbia breviarticulata Pax -- accepted
  Euphorbia breviarticulata var. breviarticulata Pax -- accepted
  Euphorbia breviarticulata var. trunciformis S. Carter -- accepted
  Euphorbia brevicornu Pax -- accepted
  Euphorbia brevirama N.E. Br. -- accepted
  Euphorbia brevis N.E. Br. -- accepted
  Euphorbia brevitorta P.R.O. Bally -- accepted
  Euphorbia bridgesii (Klotzsch & Garcke) Bertol. ex Boiss. -- not accepted
  Euphorbia briquetii Emb. & Maire -- accepted
  Euphorbia brittingeri Opiz ex Samp. -- not accepted
  Euphorbia brittingeri ssp. flavicoma (DC.) Ladero -- not accepted
  Euphorbia brittonii Millsp. -- not accepted
  Euphorbia brochonii Deysson -- not accepted
  Euphorbia broteroi Daveau -- not accepted
  Euphorbia broussonetii Willd. ex Link -- not accepted
  Euphorbia brunellii Chiov. -- accepted
  Euphorbia bruntii (Proctor) Oudejans -- accepted
  Euphorbia bruynsii L.C. Leach -- accepted
  Euphorbia bryophylla Donn. Sm. -- not accepted
  Euphorbia bubalina Boiss. -- accepted
  Euphorbia buchananii Pax -- not accepted
  Euphorbia buchtormensis Ledeb. -- accepted
  Euphorbia buhsei Boiss. -- accepted
  Euphorbia buhsei var. lasiostemon Boiss. -- not accepted
  Euphorbia bulbispina Rauh & Razaf. -- accepted
  Euphorbia bulleyana Diels -- not accepted
  Euphorbia bungei Boiss. -- accepted
  Euphorbia bupleurifolia Jacq. -- accepted
  Euphorbia bupleurifolia E. Mey. -- not accepted
  Euphorbia bupleuroides Desf. -- accepted
  Euphorbia bupleuroides Diels -- not accepted
  Euphorbia bupleuroides Willd. ex Boiss. -- not accepted
  Euphorbia bupleuroides Willd. ex Ledeb. -- not accepted
  Euphorbia bupleuroides ssp. luteola (Kralik) Maire -- not accepted
  Euphorbia burchellii Müll. Arg. -- accepted
  Euphorbia burgeri M.G. Gilbert -- accepted
  Euphorbia burkhartii Bacigalupo -- accepted
  Euphorbia burmanica Hook. f. -- accepted
  Euphorbia burmanniana J. Gay -- not accepted
  Euphorbia burmannii (Klotzsch & Garcke) E. Mey. ex Boiss. -- accepted
  Euphorbia burmannii var. karroensis Boiss. -- not accepted
  Euphorbia buruana Pax -- accepted
  Euphorbia buschiana Grossh. -- accepted
  Euphorbia bussei Pax -- accepted
  Euphorbia bussei var. bussei Pax -- accepted
  Euphorbia bussei var. kibwezensis (N.E. Br.) S. Carter -- accepted
  Euphorbia buxifolia Lam. -- not accepted
  Euphorbia buxifolia f. florida Millsp. -- not accepted
  Euphorbia buxifolia f. reclinata Millsp. -- not accepted
  Euphorbia buxifolia f. seminuda Millsp. -- not accepted
  Euphorbia buxifolia var. flexuosa (Kunth) Boiss. -- not accepted
  Euphorbia buxifolia var. ramosissima Millsp. -- not accepted
  Euphorbia buxoides Radcl.-Sm. -- accepted
  Euphorbia bwambensis S. Carter -- accepted
  Euphorbia cactus Ehrenb. ex Boiss. -- accepted
  Euphorbia cactus var. tortirama Rauh & Lavranos -- not accepted
  Euphorbia cadrilateri Prodán -- not accepted
  Euphorbia caducifolia Haines -- accepted
  Euphorbia caecorum Mart. ex Boiss. -- not accepted
  Euphorbia caeladenia Boiss. -- accepted
  Euphorbia caerulescens Haw. -- accepted
  Euphorbia caesaraugustana Willk. & Lange -- not accepted
  Euphorbia caesia Kar. & Kir. -- accepted
  Euphorbia caespitosa Lam. -- accepted
  Euphorbia caespitosa Ten. -- not accepted
  Euphorbia caespitosa ssp. typica Croizat -- not accepted
  Euphorbia caespitosa ssp. ventanicola Croizat -- not accepted
  Euphorbia caespitosa var. angustifolia Hauman -- not accepted
  Euphorbia caespitosa var. ventanicola (Croizat) Subils -- not accepted
  Euphorbia caiogala Ehrh. -- not accepted
  Euphorbia calabarica Burkill -- not accepted
  Euphorbia calabrica Huter, Porta & Rigo -- not accepted
  Euphorbia calamiformis P.R.O. Bally & S. Carter -- accepted
  Euphorbia calcarata (Schltdl.) V.W. Steinm. -- accepted
  Euphorbia calcarea Coss. & Durieu ex Coss. -- not accepted
  Euphorbia calcicola Fernald -- accepted
  Euphorbia calderensis Phil. -- not accepted
  Euphorbia calderoniae V.W. Steinm. -- accepted
  Euphorbia calendulifolia Delile -- not accepted
  Euphorbia californica Benth. -- accepted
  Euphorbia californica var. hindsiana (Benth.) Wiggins -- not accepted
  Euphorbia calliadena Engelm. ex Boiss. -- not accepted
  Euphorbia callitrichoides Kunth -- not accepted
  Euphorbia callitrichoides S. Schauer -- not accepted
  Euphorbia caloderma S. Carter -- accepted
  Euphorbia calonesiaca Croizat -- not accepted
  Euphorbia calva N.E. Br. -- not accepted
  Euphorbia calyciflora Sessé & Moç. -- not accepted
  Euphorbia calycina N.E. Br. -- not accepted
  Euphorbia calyculata Kunth -- accepted -- Chupire, Tencuante
  Euphorbia calyptrata Coss. & Durieu -- accepted
  Euphorbia calyptrata var. involucrata Batt. -- not accepted
  Euphorbia camagueyensis (Millsp.) Urb. -- accepted
  Euphorbia cameronii N.E. Br. -- accepted
  Euphorbia campestris S. Geuns -- not accepted
  Euphorbia campestris var. esuliformis (S. Schauer ex Nees & S. Schauer) Boiss. -- not accepted
  Euphorbia campestris var. foliosa Millsp. -- not accepted
  Euphorbia campestris var. seemannii (Klotzsch) Boiss. -- not accepted
  Euphorbia campestris var. subpuberula Greenm. -- not accepted
  Euphorbia canaliculata Lam. -- not accepted
  Euphorbia canaliculata Pers. -- not accepted
  Euphorbia canaliculata Lodd. -- not accepted
  Euphorbia canariensis L. -- accepted
  Euphorbia canariensis f. viridis G. Kunkel -- not accepted
  Euphorbia canariensis var. spiralis Bolle ex Boiss. -- not accepted
  Euphorbia candelabrum Welw. ex Hiern -- not accepted
  Euphorbia candelabrum Trémaux ex Kotschy -- accepted
  Euphorbia candelabrum var. bilocularis (N.E. Br.) S. Carter -- accepted
  Euphorbia candelabrum var. candelabrum Trémaux ex Kotschy -- accepted
  Euphorbia canescens L. -- not accepted
  Euphorbia cannellii L.C. Leach -- accepted
  Euphorbia cantabrica Rouy -- not accepted
  Euphorbia canuti Parl. -- not accepted
  Euphorbia capansa Ducke -- not accepted
  Euphorbia capazii Caball. -- not accepted
  Euphorbia caperata McVaugh -- accepted
  Euphorbia caperonioides R.A. Dyer & P.G. Mey. -- accepted
  Euphorbia capillaris Gagnep. -- accepted
  Euphorbia capitata Lam. -- not accepted
  Euphorbia capitellata Engelm. -- accepted -- head sandmat, capitate sandmat, head spurge
  Euphorbia capitellata var. laxiflora S. Watson -- not accepted
  Euphorbia capitellata var. typica L.C. Wheeler -- not accepted
  Euphorbia capitulata Rchb. -- accepted
  Euphorbia capmanambatoensis Rauh -- accepted
  Euphorbia capsaintemariensis Rauh -- accepted
  Euphorbia capsaintemariensis var. tulearensis Rauh -- not accepted
  Euphorbia captiosa N.E. Br. -- not accepted
  Euphorbia capuronii Ursch & Leandri -- accepted
  Euphorbia capuronii Leandri -- not accepted
  Euphorbia caput-aureum Denis -- accepted
  Euphorbia caput-medusae L. -- accepted
  Euphorbia caput-medusae var. geminata Aiton -- not accepted
  Euphorbia caput-medusae var. major Aiton -- not accepted
  Euphorbia caracasana (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia cardiophylla Boiss. & Heldr. -- not accepted
  Euphorbia careyi F. Muell. -- not accepted
  Euphorbia carinata Donn -- not accepted
  Euphorbia carinifolia N.E. Br. -- accepted
  Euphorbia carinthiaca Traunf. ex Boiss. -- not accepted
  Euphorbia carinulata P.R.O. Bally & S. Carter -- accepted
  Euphorbia carissoides F.M. Bailey -- accepted
  Euphorbia carmenensis Rose -- not accepted
  Euphorbia carniolica Jacq. -- accepted
  Euphorbia carniolica Scop. ex Brot. -- not accepted
  Euphorbia carniolica Lapeyr. -- not accepted
  Euphorbia carniolica DC. -- not accepted
  Euphorbia carniolica f. expansa (Janka) Prodán -- not accepted
  Euphorbia carniolica ssp. expansa (Janka) Nyman -- not accepted
  Euphorbia carniolica var. ambigua (Waldst. & Kit. ex Willd.) Nyman -- not accepted
  Euphorbia carnosa Paulsen -- not accepted
  Euphorbia carpasus Ehrenb. ex Boiss. -- not accepted
  Euphorbia carpatica Wol. -- accepted
  Euphorbia cartaginiensis Porta & Rigo -- not accepted
  Euphorbia carteriana P.R.O. Bally -- accepted
  Euphorbia carullae Sennen -- not accepted
  Euphorbia carunculata Waterf. -- accepted -- sanddune sandmat, sand-dune spurge
  Euphorbia carunculifera L.C. Leach -- accepted
  Euphorbia carunculifera ssp. subfastigiata L.C. Leach -- not accepted
  Euphorbia cashmeriana Royle -- accepted
  Euphorbia cassia Boiss. -- accepted
  Euphorbia cassia ssp. cassia Boiss. -- accepted
  Euphorbia cassia ssp. rigoi (Boiss. ex Freyn) Holmboe -- accepted
  Euphorbia cassioides C. Presl -- not accepted
  Euphorbia cassythoides Boiss. -- accepted
  Euphorbia castillonii Lavranos -- not accepted
  Euphorbia catamarcensis (Croizat) Subils -- accepted
  Euphorbia cataractarum S. Carter -- accepted
  Euphorbia catenata (S. Carter) Bruyns -- accepted
  Euphorbia caterviflora N.E. Br. -- accepted
  Euphorbia cattimandoo Elliot ex Wight -- accepted
  Euphorbia caucasica Dubovik -- not accepted
  Euphorbia caudata Boiss. & Hausskn. -- not accepted
  Euphorbia caudiculosa Boiss. -- accepted
  Euphorbia cavaleriei H. Lév. & Vaniot -- not accepted
  Euphorbia cayensis Millsp. -- accepted
  Euphorbia cebrina Hochst. ex Klotzsch & Garcke -- not accepted
  Euphorbia cechica Opiz -- not accepted
  Euphorbia cedrorum Rauh & Hebding -- accepted
  Euphorbia celastroides Boiss. -- accepted -- `ekoko
  Euphorbia celastroides var. amplectens Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. arenisaxosa H. St. John -- not accepted
  Euphorbia celastroides var. halawana Sherff -- not accepted
  Euphorbia celastroides var. hanapepensis Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. haupuana Sherff -- not accepted
  Euphorbia celastroides var. humbertii Sherff -- not accepted
  Euphorbia celastroides var. ingrata O. Deg. & Sherff -- not accepted
  Euphorbia celastroides var. kaenana Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. kealiana Sherff -- not accepted
  Euphorbia celastroides var. kohalana Sherff -- not accepted
  Euphorbia celastroides var. laehiensis O. Deg., I. Deg. & Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. limahuliensis H. St. John -- not accepted
  Euphorbia celastroides var. lorifolia (A. Gray ex H. Mann) Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. mauiensis Sherff -- not accepted
  Euphorbia celastroides var. moomomiana Sherff -- not accepted
  Euphorbia celastroides var. nelsonii H. St. John -- not accepted
  Euphorbia celastroides var. nematopoda Sherff -- not accepted
  Euphorbia celastroides var. niuensis Sherff -- not accepted
  Euphorbia celastroides var. odonatoides O. Deg. & Sherff -- not accepted
  Euphorbia celastroides var. pseudoniuensis O. Deg. & Sherff -- not accepted
  Euphorbia celastroides var. saxicola O. Deg. & Sherff ex Sherff -- not accepted
  Euphorbia celastroides var. stokesii (C.N. Forbes) Sherff -- not accepted -- `ekoko
  Euphorbia celastroides var. tomentella (Boiss.) Oudejans -- not accepted -- `ekoko
  Euphorbia celastroides var. typica Sherff -- not accepted
  Euphorbia celastroides var. waikoluensis Sherff -- not accepted
  Euphorbia celata R.A. Dyer -- accepted
  Euphorbia celerieri (Emb.) Emb. ex Vindt -- accepted
  Euphorbia centralis B.G. Thomson -- accepted
  Euphorbia centunculoides Kunth -- accepted
  Euphorbia ceratocarpa Ten. -- accepted
  Euphorbia cerebrina Hochst. ex Boiss. -- not accepted
  Euphorbia cereiformis L. -- accepted
  Euphorbia cereiformis var. echinata Salm-Dyck ex Boiss. -- not accepted
  Euphorbia cereiformis var. submamillaris A. Berger -- not accepted
  Euphorbia cerifera Alcocer -- not accepted
  Euphorbia cerinthifolia Fisch. ex Boiss. -- not accepted
  Euphorbia cernua Coss. & Durieu ex Boiss. -- not accepted
  Euphorbia ceroderma I.M. Johnst. -- accepted
  Euphorbia cervicornis Boiss. -- not accepted
  Euphorbia cervicornu Baill. -- accepted
  Euphorbia cestrifolia Kunth -- accepted
  Euphorbia chaborasia Gomb. -- accepted
  Euphorbia chaculana Donn. Sm. -- not accepted
  Euphorbia chaetocalyx (Boiss.) Tidestr. -- accepted -- bristlecup sandmat
  Euphorbia chaetocalyx var. chaetocalyx (Boiss.) Tidestr. -- accepted -- bristlecup sandmat
  Euphorbia chaetocalyx var. triligulata (L.C. Wheeler) M.C. Johnst. -- accepted -- bristlecup sandmat, Triligulate bristlecup sandmat
  Euphorbia chaixiana Timb.-Lagr. -- not accepted
  Euphorbia chalicophila Weath. -- not accepted
  Euphorbia chamaebuxus Bernard ex Gren. & Godr. -- not accepted
  Euphorbia chamaecaula Weath. -- not accepted
  Euphorbia chamaeclada Ule -- accepted
  Euphorbia chamaecormos Chiov. -- not accepted
  Euphorbia chamaepeploides Lotsy -- not accepted
  Euphorbia chamaepeplus Boiss. & Gaill. -- accepted
  Euphorbia chamaepeplus var. angustifolia Danin -- not accepted
  Euphorbia chamaepeplus var. sinaica Boiss. -- not accepted
  Euphorbia chamaerrhodos Boiss. -- accepted
  Euphorbia chamaerrhodos var. hirsuta Chodat & Hassl. -- not accepted
  Euphorbia chamaesula Boiss. -- accepted -- mountain spurge
  Euphorbia chamaesula var. subdentata (Engelm.) Norton -- not accepted
  Euphorbia chamaesyce L. -- accepted
  Euphorbia chamaesyce var. canescens (L.) Boiss. -- not accepted
  Euphorbia chamaesyce var. glabra Roep. -- not accepted
  Euphorbia chamaesyce var. glabra C.A. Mey. -- not accepted
  Euphorbia chamaesyce var. glabriuscula Lange -- not accepted
  Euphorbia chamaesyce var. massiliensis (DC.) Thell. -- not accepted
  Euphorbia chamaesyce var. pilosa Roep. -- not accepted
  Euphorbia chamaesyce var. pilosa C.A. Mey. -- not accepted
  Euphorbia chamaesycoides B. Nord. -- accepted
  Euphorbia chamberlinii I.M. Johnst. -- accepted
  Euphorbia chamissonis (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia chankoana Vorosch. -- not accepted
  Euphorbia chapmanii Oudejans -- not accepted -- Chapman's spurge
  Euphorbia characias L. -- accepted -- Albanian spurge
  Euphorbia characias ssp. characias L. -- accepted
  Euphorbia characias ssp. veneta (Willd.) Litard. -- not accepted
  Euphorbia characias ssp. wulfenii (Hoppe ex W. Koch) Radcl.-Sm. -- accepted
  Euphorbia characias var. eriocarpa (Bertol.) Nyman -- not accepted
  Euphorbia characias var. lusitanica O. Bolòs -- not accepted
  Euphorbia charleswilsoniana V. Vlk -- accepted
  Euphorbia chasmophila Rech. f. & Aellen -- not accepted
  Euphorbia cheiradenia Boiss. & Hohen. -- accepted
  Euphorbia cheirolepis Fisch. & C.A. Mey. ex Ledeb. -- accepted
  Euphorbia cheirolepis var. heterophylla Boiss. -- not accepted
  Euphorbia chenopodiifolia Boiss. -- accepted
  Euphorbia chersina N.E. Br. -- accepted
  Euphorbia chersonesa Huft -- accepted
  Euphorbia chesneyi (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia chevalieri (N.E. Br.) Bruyns -- accepted
  Euphorbia chiapensis Brandegee -- not accepted
  Euphorbia chilensis Gay -- not accepted
  Euphorbia chimaera Lipsky -- not accepted
  Euphorbia chiogenoides Rusby -- not accepted
  Euphorbia chiribensis V.W. Steinm. & Felger -- accepted
  Euphorbia chrysochaeta W. Fitzg. -- not accepted
  Euphorbia chrysocoma H. Lév. & Vaniot -- not accepted
  Euphorbia chrysocoma var. glaucophylla H. Lév. & Vaniot -- not accepted
  Euphorbia chrysophylla (Klotzsch & Garcke) Klotzsch ex Boiss. -- not accepted
  Euphorbia cibdela N.E. Br. -- accepted
  Euphorbia cilicica Boiss. -- not accepted
  Euphorbia ciliolata Pax -- not accepted
  Euphorbia cinerascens Engelm. -- accepted -- ashy sandmat
  Euphorbia cinerascens var. appendiculata Engelm. -- not accepted
  Euphorbia cinerea W. Fitzg. -- not accepted
  Euphorbia cirsioides Costantin & Gallaud -- not accepted
  Euphorbia citrina S. Carter -- accepted
  Euphorbia clandestina Jacq. -- accepted
  Euphorbia clarae (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia clarionensis Brandegee -- not accepted
  Euphorbia clarkeana Hook. f. -- accepted
  Euphorbia classenii P.R.O. Bally & S. Carter -- accepted
  Euphorbia clava Jacq. -- accepted
  Euphorbia clavarioides Boiss. -- accepted
  Euphorbia clavarioides var. truncata (N.E. Br.) A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia clavata Salisb. -- not accepted
  Euphorbia clavidigitata Gage -- accepted
  Euphorbia clavigera N.E. Br. -- accepted
  Euphorbia clavigera Lacaita -- not accepted
  Euphorbia claytonioides Pax -- accepted
  Euphorbia clementei Boiss. -- accepted
  Euphorbia clementei Bourg. ex Boiss. -- not accepted
  Euphorbia clementei f. hozmariensis Pau -- not accepted
  Euphorbia clementei f. maroccana (Maire) Vindt -- not accepted
  Euphorbia clementei ssp. clementei Boiss. -- accepted
  Euphorbia clementei ssp. faurei (Maire) Vicens, Molero & C. Blanché -- accepted
  Euphorbia clementei ssp. villosa (Faure & Maire) Vicens, Molero & C. Blanché -- accepted
  Euphorbia clementei var. angustifolia Lange -- not accepted
  Euphorbia clementei var. euclementei Maire -- not accepted
  Euphorbia clementei var. maroccana Maire -- not accepted
  Euphorbia clementei var. puberula (Emb.) Maire -- not accepted
  Euphorbia clementei var. villifolia Maire -- not accepted
  Euphorbia clementii Domin -- not accepted
  Euphorbia cleopatra Baill. -- not accepted
  Euphorbia clivicola R.A. Dyer -- accepted
  Euphorbia clusiifolia Hook. & Arn. -- accepted -- forest sandmat
  Euphorbia clusiifolia var. grandiflora Hillebr. -- not accepted
  Euphorbia clutioides (G. Forst.) C.A. Gardner -- not accepted
  Euphorbia coalcomanensis (Croizat) V.W. Steinm. -- accepted
  Euphorbia coccinea B. Heyne ex Roth -- accepted
  Euphorbia coccinea Willd. ex Boiss. -- not accepted
  Euphorbia coderiana DC. -- not accepted
  Euphorbia coerulans Pax -- accepted
  Euphorbia cofradiana Brandegee -- not accepted
  Euphorbia coghlanii F.M. Bailey -- accepted
  Euphorbia cognata (Klotzsch) Boiss. -- not accepted
  Euphorbia colchica (Litv.) Geltman -- not accepted
  Euphorbia colimae Rose -- not accepted
  Euphorbia collenetteae D. Al-Zahrani & El-Karemy -- accepted -- Marar, Saab, Scharath
  Euphorbia colletioides Benth. -- accepted
  Euphorbia colliculina A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia colligata V.W. Steinm. -- accepted
  Euphorbia collina Phil. -- not accepted
  Euphorbia collina Willd. ex Ledeb. -- not accepted
  Euphorbia collina Brandegee -- not accepted
  Euphorbia collina var. andina (Phil.) Subils -- not accepted
  Euphorbia collina var. chrysophylla (Klotzsch & Garcke) Subils -- not accepted
  Euphorbia collina var. glaucescens (Chodat & Wilczek) Subils -- not accepted
  Euphorbia collina var. minor (Hicken) Subils -- not accepted
  Euphorbia collina var. nahuelhuapina (Croizat) Subils -- not accepted
  Euphorbia collina var. patagonica (Hieron.) Subils -- not accepted
  Euphorbia collina var. spathulata (Chodat & Wilczek) Subils -- not accepted
  Euphorbia colorata Engelm. -- accepted
  Euphorbia colubrina P.R.O. Bally & S. Carter -- accepted
  Euphorbia columnaris P.R.O. Bally -- accepted
  Euphorbia comans W. Fitzg. -- not accepted
  Euphorbia commelinii DC. -- not accepted
  Euphorbia commiphoroides Dinter -- not accepted
  Euphorbia commutata Engelm. ex A. Gray -- accepted -- tinted woodland spurge, tinted euphorbia
  Euphorbia commutata var. erecta Norton -- not accepted
  Euphorbia comonduana Millsp. -- not accepted
  Euphorbia comosa Vell. -- accepted
  Euphorbia complanata Warb. -- accepted
  Euphorbia complexa R.A. Dyer -- accepted
  Euphorbia compressa Boiss. -- accepted
  Euphorbia concanensis Janarth. & S.R. Yadav -- accepted
  Euphorbia conceptionis Rupr. ex Boiss. -- not accepted
  Euphorbia condensata Fisch. ex M. Bieb. -- not accepted
  Euphorbia condylocarpa M. Bieb. -- accepted
  Euphorbia conferta (Small) B.E. Sm. -- accepted -- Everglade Key sandmat
  Euphorbia confertiflora Volkens -- not accepted
  Euphorbia confinalis R.A. Dyer -- accepted
  Euphorbia confinalis ssp. confinalis R.A. Dyer -- accepted
  Euphorbia confinalis ssp. rhodesica L.C. Leach -- accepted
  Euphorbia conformis N.E. Br. -- not accepted
  Euphorbia confusa Blume ex Boiss. -- not accepted
  Euphorbia congenera Blume -- not accepted
  Euphorbia congesta Willd. -- not accepted
  Euphorbia congestiflora L.C. Leach -- accepted
  Euphorbia conifera Steph. ex Boiss. -- not accepted
  Euphorbia coniosperma Boiss. & Buhse -- accepted
  Euphorbia conjuncta Millsp. -- not accepted
  Euphorbia connata Boiss. -- accepted
  Euphorbia consanguinea Schrenk -- accepted
  Euphorbia consanguinea Klotzsch -- not accepted
  Euphorbia consanguinea Engelm. ex Boiss. -- not accepted
  Euphorbia consobrina N.E. Br. -- not accepted
  Euphorbia consoquitlae Brandegee -- not accepted
  Euphorbia conspicua N.E. Br. -- accepted
  Euphorbia contorta L.C. Leach -- accepted
  Euphorbia controversa N.E. Br. -- not accepted
  Euphorbia convolvuloides Hochst. ex Benth. -- accepted
  Euphorbia conzattii V.W. Steinm. -- accepted
  Euphorbia cooperi N.E. Br. ex A. Berger -- accepted -- candelabra tree
  Euphorbia cooperi var. calidicola L.C. Leach -- accepted
  Euphorbia cooperi var. cooperi N.E. Br. ex A. Berger -- accepted
  Euphorbia cooperi var. ussanguensis (N.E. Br.) L.C. Leach -- accepted
  Euphorbia copiapina Phil. -- accepted
  Euphorbia corallifera M.E. Jones -- not accepted
  Euphorbia corallioides L. -- accepted
  Euphorbia corallioides var. denudata Boiss. -- not accepted
  Euphorbia corallothamnus Dinter -- not accepted
  Euphorbia cordata Meyen -- not accepted
  Euphorbia cordata Schrank -- not accepted
  Euphorbia cordata Larrañaga -- not accepted
  Euphorbia cordatella Oudejans -- accepted
  Euphorbia cordeiroae P. Carrillo & V.W. Steinm. -- accepted
  Euphorbia cordellata Haw. -- not accepted
  Euphorbia cordifolia Elliott -- accepted -- heartleaf sandmat
  Euphorbia cordifolia C.A. Mey. ex Boiss. -- not accepted
  Euphorbia coriacea K. Koch -- not accepted
  Euphorbia coriariifolia Boiss. -- not accepted
  Euphorbia corifolia Lam. -- not accepted
  Euphorbia cornastra (Dressler) Radcl.-Sm. -- accepted
  Euphorbia corniculata R.A. Dyer -- accepted
  Euphorbia cornigera Boiss. -- accepted
  Euphorbia cornigera var. cognata (Klotzsch & Garcke) Binojk. & N.P. Balakr. -- accepted
  Euphorbia cornigera var. cornigera Boiss. -- accepted
  Euphorbia cornuta Pers. -- not accepted
  Euphorbia corollata L. -- accepted -- floweringspurge euphorbia, flowering spurge
  Euphorbia corollata var. angustifolia Elliott -- not accepted
  Euphorbia corollata var. apocynifolia (Small) Millsp. -- not accepted
  Euphorbia corollata var. glauca Millsp. -- not accepted
  Euphorbia corollata var. grandiflora Boiss. -- not accepted
  Euphorbia corollata var. hirsuta Macnab -- not accepted
  Euphorbia corollata var. joorii Norton -- not accepted
  Euphorbia corollata var. molle Millsp. -- not accepted
  Euphorbia corollata var. mollis Millsp. -- not accepted
  Euphorbia corollata var. paniculata Boiss. -- not accepted
  Euphorbia corollata var. subpetiolata Boiss. -- not accepted
  Euphorbia corollata var. viridiflora Farw. -- not accepted
  Euphorbia corollata var. zinniiflora (Small) H.E. Ahles -- not accepted
  Euphorbia coronata Thunb. -- not accepted
  Euphorbia correllii M.C. Johnst. -- accepted
  Euphorbia correntina Parodi -- accepted
  Euphorbia corrigioloides Boiss. -- accepted
  Euphorbia corsica Req. -- accepted
  Euphorbia corymbosa N.E. Br. -- accepted
  Euphorbia corynoclada F. Muell. -- not accepted
  Euphorbia coscinosperma Rchb. -- not accepted
  Euphorbia cossoniana Boiss. -- accepted
  Euphorbia cossoniana var. maroccana Batt. -- not accepted
  Euphorbia costata Schur -- not accepted
  Euphorbia costeana (Rouy) P. Fourn. -- not accepted
  Euphorbia cotinifolia L. -- accepted -- Mexican shrubby spurge
  Euphorbia cotinifolia ssp. cotinoides (Miq.) Christenh. -- not accepted
  Euphorbia cotinoides Miq. -- not accepted
  Euphorbia cotinoides var. riedeliana (Klotzsch & Garcke) Müll. Arg. -- not accepted
  Euphorbia cotinoides var. verrucosa Boiss. -- not accepted
  Euphorbia coudercii f. glaberrima Gagnep. -- not accepted
  Euphorbia cowellii (Millsp. ex Britton) Oudejans -- accepted -- Cowell's sandmat
  Euphorbia cozumelensis Millsp. -- accepted
  Euphorbia cozumelensis var. pilosulca Millsp. -- not accepted
  Euphorbia craspedia Boiss. -- accepted
  Euphorbia crassinodis Urb. -- accepted
  Euphorbia crassipes Marloth -- accepted
  Euphorbia creberrima McVaugh -- accepted
  Euphorbia crebrifolia S. Carter -- accepted
  Euphorbia cremersii Rauh & Razaf. -- accepted
  Euphorbia cremersii f. viridifolia Rauh -- accepted
  Euphorbia cremersii var. cremersii Rauh & Razaf. -- accepted
  Euphorbia cremersii var. rakatozafyi (Cremers) Rauh -- accepted
  Euphorbia crenata (N.E. Br.) Bruyns -- accepted
  Euphorbia crenulata Engelm. -- accepted -- Chinese caps, Chinesecaps
  Euphorbia crenulata var. franciscana Norton -- not accepted
  Euphorbia crepitata L.C. Wheeler -- accepted
  Euphorbia crepitata var. crepitata L.C. Wheeler -- accepted
  Euphorbia crepitata var. longa M.C. Johnst. -- accepted
  Euphorbia crepuscula (L.C. Wheeler) V.W. Steinm. & Felger -- accepted
  Euphorbia cressoides M.C. Johnst. -- accepted
  Euphorbia cretica Mill. -- not accepted
  Euphorbia cretophila Klokov -- not accepted
  Euphorbia crispa (Haw.) Sweet -- not accepted
  Euphorbia crispata Willd. ex Hornem. -- not accepted
  Euphorbia crispata Lem. -- not accepted
  Euphorbia cristata B. Heyne ex Roth -- accepted
  Euphorbia cristata D. Dietr. -- not accepted
  Euphorbia croizatii Leandri -- accepted
  Euphorbia croizatii (Hurus.) Kitag. -- not accepted
  Euphorbia crossadenia Pax & K. Hoffm. -- accepted
  Euphorbia crotonoides Boiss. -- accepted
  Euphorbia crotonoides ssp. crotonoides Boiss. -- accepted
  Euphorbia crotonoides ssp. narokensis S. Carter -- accepted
  Euphorbia cruentata Graham -- not accepted
  Euphorbia cryptocaulis M.G. Gilbert -- accepted
  Euphorbia cryptospinosa P.R.O. Bally -- accepted
  Euphorbia cuatrecasasii Pau -- not accepted
  Euphorbia cubensis Boiss. -- accepted
  Euphorbia cuchumatanensis Standl. & Steyerm. -- not accepted
  Euphorbia culminicola Ant. Molina -- not accepted
  Euphorbia cumbrae Boiss. -- accepted
  Euphorbia cumulata R.A. Dyer -- accepted
  Euphorbia cumulicola (Small) Oudejans -- accepted -- coastal dune sandmat
  Euphorbia cuneata Vahl -- accepted
  Euphorbia cuneata ssp. cretacea S. Carter -- accepted
  Euphorbia cuneata ssp. cuneata Vahl -- accepted
  Euphorbia cuneata ssp. lamproderma S. Carter -- accepted
  Euphorbia cuneata ssp. spinescens (Pax) S. Carter -- accepted
  Euphorbia cuneata ssp. wajirensis S. Carter -- accepted
  Euphorbia cuneata var. carpasus Boiss. -- not accepted
  Euphorbia cuneata var. perrottetii (Jaub. & Spach) Boiss. -- not accepted
  Euphorbia cuneata var. pumilans S. Carter -- accepted
  Euphorbia cuneata var. spinescens (Pax) S. Carter -- accepted
  Euphorbia cuneifolia Guss. -- accepted
  Euphorbia cuneifolia Roxb. -- not accepted
  Euphorbia cuneneana L.C. Leach -- accepted
  Euphorbia cuneneana ssp. cuneneana L.C. Leach -- accepted
  Euphorbia cuneneana ssp. rhizomatosa L.C. Leach -- accepted
  Euphorbia cupanii Guss. ex Bertol. -- not accepted
  Euphorbia cupanii A. Schultz ex Gren. & Godr. -- not accepted
  Euphorbia cupanii var. spartioides (Jacq.) Boiss. -- not accepted
  Euphorbia cuphosperma (Engelm.) Boiss. -- accepted -- hairy-fruit spurge, Hairy-fruited Spurge
  Euphorbia cupricola (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia cuprispina S. Carter -- accepted
  Euphorbia cupularis Boiss. -- accepted
  Euphorbia curocana L.C. Leach -- not accepted
  Euphorbia currorii N.E. Br. -- not accepted
  Euphorbia curtifolia Chaub. -- not accepted
  Euphorbia curtisii Engelm. -- accepted -- Curtis' spurge, sandhills spurge
  Euphorbia curtisii var. longipes Boiss. -- not accepted
  Euphorbia curvirama R.A. Dyer -- accepted
  Euphorbia cuspidata Bertol. -- accepted
  Euphorbia cuspidata Bernh. ex Krauss -- not accepted
  Euphorbia cussonioides P.R.O. Bally -- accepted
  Euphorbia cyanogala C. Wright ex Griseb. -- not accepted
  Euphorbia cyanophylla H. Lév. -- not accepted
  Euphorbia cyathophora Murray -- accepted -- fire on the mountain, fire-on-the-mountain, painted leaf
  Euphorbia cybirensis Boiss. -- accepted
  Euphorbia cybirensis var. acutifolia Boiss. -- not accepted
  Euphorbia cybirensis var. dehiscens Boiss. -- not accepted
  Euphorbia cybirensis var. longifolia Boiss. -- not accepted
  Euphorbia cybirensis var. microcarpa Boiss. -- not accepted
  Euphorbia cybirensis var. valerianifolia (Lam.) Nyman -- not accepted
  Euphorbia cylindrica Marloth ex A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia cylindrifolia Marn.-Lap. & Rauh -- accepted
  Euphorbia cylindrifolia ssp. cylindrifolia Marn.-Lap. & Rauh -- accepted
  Euphorbia cylindrifolia ssp. tuberifera Rauh -- accepted
  Euphorbia cymbifera (Schltdl.) V.W. Steinm. -- accepted
  Euphorbia cymbiformis Rusby -- accepted
  Euphorbia cymosa Poir. -- accepted
  Euphorbia cynanchoides Drake -- not accepted
  Euphorbia cyparissias L. -- accepted -- cypress spurge, graveyard spurge
  Euphorbia cyparissias var. esuloides DC. -- not accepted
  Euphorbia cyparissias var. major Boiss. -- not accepted
  Euphorbia cyparissioides Pax -- accepted
  Euphorbia cyparissioides var. minor N.E. Br. -- not accepted
  Euphorbia cypria Boiss. -- not accepted
  Euphorbia cyprianii Maire & Sennen -- not accepted
  Euphorbia cyri V.W. Steinm. -- accepted
  Euphorbia cyrtophylla (Prokh.) Prokh. -- accepted
  Euphorbia czerepanovii Geltman -- accepted
  Euphorbia daghestanica Geltman -- accepted
  Euphorbia dahurica Peschkova -- accepted
  Euphorbia dalettiensis M.G. Gilbert -- accepted
  Euphorbia dallachyana Baill. -- accepted
  Euphorbia dalmatica Vis. -- not accepted
  Euphorbia dalmatica f. isophylla K. Malý -- not accepted
  Euphorbia damarana L.C. Leach -- accepted
  Euphorbia damascena Boiss. -- not accepted
  Euphorbia damasoi Oudejans -- accepted
  Euphorbia daphnoides Balf. f. -- accepted
  Euphorbia daphnoides Baill. -- not accepted
  Euphorbia darbandensis N.E. Br. -- accepted
  Euphorbia darlingtonii A. Gray -- not accepted
  Euphorbia darlingtonii var. glabra Boiss. -- not accepted
  Euphorbia dasyacantha S. Carter -- accepted
  Euphorbia dasycarpa Coss. ex Batt. & Trab. -- not accepted
  Euphorbia dasyclada Dusén -- not accepted
  Euphorbia dauana S. Carter -- accepted
  Euphorbia davidii Subils -- accepted -- David's spurge, Toothed Spurge
  Euphorbia daviesii E.A. Bruce -- accepted
  Euphorbia davisii M.S. Khan -- accepted
  Euphorbia davyi N.E. Br. -- accepted
  Euphorbia dawei N.E. Br. -- accepted
  Euphorbia debilispina L.C. Leach -- accepted
  Euphorbia decariana Croizat -- not accepted
  Euphorbia decaryi Guillaumin -- accepted
  Euphorbia decaryi var. ampanihyensis Cremers -- accepted
  Euphorbia decaryi var. capsaintemariensis (Rauh) Cremers -- not accepted
  Euphorbia decaryi var. decaryi Guillaumin -- accepted
  Euphorbia decaryi var. robinsonii Cremers -- accepted
  Euphorbia decaryi var. spirosticha Rauh & Buchloh -- accepted
  Euphorbia deccanensis V.S. Raju -- accepted
  Euphorbia deccanensis var. deccanensis V.S. Raju -- accepted
  Euphorbia deccanensis var. nallamalayana (J.L. Ellis) V.S. Raju -- accepted
  Euphorbia decepta N.E. Br. -- accepted
  Euphorbia decidua P.R.O. Bally & L.C. Leach -- accepted
  Euphorbia decliviticola L.C. Leach -- accepted
  Euphorbia decorsei Drake -- accepted
  Euphorbia decumbens (Forssk.) Willd. -- not accepted
  Euphorbia decussata Salisb. -- not accepted
  Euphorbia decussata E. Mey. ex Boiss. -- not accepted
  Euphorbia dedzana L.C. Leach -- accepted
  Euphorbia deflexa Sibth. & Sm. -- accepted
  Euphorbia defoliata Urb. -- accepted
  Euphorbia degenerata D. Dietr. -- not accepted
  Euphorbia degeneri Sherff -- accepted -- beach sandmat
  Euphorbia degeneri var. molokaiensis Sherff -- not accepted
  Euphorbia degeneri var. typica Sherff -- not accepted
  Euphorbia deightonii Croizat -- accepted
  Euphorbia dejecta N.E. Br. -- not accepted
  Euphorbia dekindtii Pax -- accepted
  Euphorbia delicatissima S. Carter -- accepted
  Euphorbia delicatula Boiss. -- accepted
  Euphorbia delphinensis Ursch & Leandri -- accepted
  Euphorbia deltobracteata (Prokh.) Prokh. -- accepted
  Euphorbia deltoidea Engelm. ex Chapm. -- accepted -- wedge sandmat
  Euphorbia deltoidea ssp. adhaerens (Small) Oudejans -- accepted -- wedge sandmat
  Euphorbia deltoidea ssp. deltoidea Engelm. ex Chapm. -- accepted -- wedge sandmat
  Euphorbia deltoidea ssp. pinetorum (Small) Oudejans -- accepted -- wedge sandmat
  Euphorbia deltoidea ssp. serpyllum (Small) Ya Yang -- accepted -- wedge sandmat
  Euphorbia deltoidea var. adhaerens (Small) Oudejans -- not accepted
  Euphorbia deltoidea var. serpyllum (Small) Oudejans -- not accepted
  Euphorbia demissa L.C. Leach -- accepted
  Euphorbia demnatensis Coss. ex Batt. & Trab. -- not accepted
  Euphorbia dendroides L. -- accepted -- tree spurge
  Euphorbia denisiana Guillaumin -- accepted
  Euphorbia denisii Oudejans -- accepted
  Euphorbia densa Schrenk -- accepted
  Euphorbia densa Schott & Kotschy ex Tchich. -- not accepted
  Euphorbia densa ssp. badghysi Botsch. -- accepted
  Euphorbia densa ssp. densa Schrenk -- accepted
  Euphorbia densiflora (Klotzsch & Garcke) Klotzsch -- accepted
  Euphorbia densifolia K. Koch -- accepted
  Euphorbia densispina S. Carter -- accepted
  Euphorbia densiuscula Popov -- accepted
  Euphorbia densiusculiformis (Pazij) Botsch. -- accepted
  Euphorbia dentata Michx. -- accepted -- toothed spurge, toothedleaf poinsettia, toothed euphorbia
  Euphorbia dentata f. cuphosperma (Engelm.) Fernald -- not accepted
  Euphorbia dentata var. cuphosperma Engelm. -- not accepted
  Euphorbia dentata var. gracillima Millsp. -- not accepted
  Euphorbia dentata var. lancifolia Farw. -- not accepted
  Euphorbia dentata var. lasiocarpa Boiss. -- not accepted -- toothed spurge, toothedleaf poinsettia
  Euphorbia dentata var. linearis Engelm. ex Boiss. -- not accepted
  Euphorbia dentata var. rigida Engelm. -- not accepted
  Euphorbia denticulata Lam. -- accepted
  Euphorbia dentosa I.M. Johnst. -- accepted
  Euphorbia denudata Bertol. -- not accepted
  Euphorbia depauperata Hochst. ex A. Rich. -- accepted
  Euphorbia depauperata ssp. aprica Pax -- not accepted
  Euphorbia depauperata var. depauperata Hochst. ex A. Rich. -- accepted
  Euphorbia depauperata var. laevicarpa Friis & Vollesen -- accepted
  Euphorbia depauperata var. pubescens Pax -- accepted
  Euphorbia depauperata var. pubiflora N.E. Br. -- not accepted
  Euphorbia depauperata var. trachycarpa (Pax) S. Carter -- accepted
  Euphorbia depauperata var. tsetserrensis S. Carter -- accepted
  Euphorbia deppeana Boiss. -- accepted -- Oahu sandmat
  Euphorbia depressa Torr. ex Spreng. -- not accepted
  Euphorbia depressa Phil. ex Klotzsch & Garcke -- not accepted
  Euphorbia derickii V.W. Steinm. -- accepted
  Euphorbia descampsii (Pax) Bruyns -- accepted
  Euphorbia deseglisei Boreau ex Boiss. -- not accepted
  Euphorbia deserticola F. Muell. -- not accepted
  Euphorbia desertorum Weinm. -- not accepted
  Euphorbia desmondii Keay & Milne-Redh. -- accepted
  Euphorbia despoliata (Menezes) Monod -- not accepted
  Euphorbia dhofarensis S. Carter -- accepted
  Euphorbia diazlunana (J. Lomelí & Sahagun) V.W. Steinm. -- accepted
  Euphorbia dichotoma Forssk. -- not accepted
  Euphorbia dichotoma Roxb. -- not accepted
  Euphorbia dichroa S. Carter -- accepted
  Euphorbia dictyosperma Fisch. & C.A. Mey. -- not accepted
  Euphorbia dictyosperma var. leiococca Engelm. -- not accepted
  Euphorbia dictyosperma var. mexicana Engelm. -- not accepted
  Euphorbia dictyosperma var. multicaulis J.M. Coult. -- not accepted
  Euphorbia didiereoides Denis ex Leandri -- accepted
  Euphorbia diffusa Jacq. -- not accepted
  Euphorbia diffusa Hook. f. -- not accepted
  Euphorbia diffusa Dufour -- not accepted
  Euphorbia digestiva Rojas -- accepted
  Euphorbia digitata S. Watson -- not accepted
  Euphorbia dilatata Hochst. ex A. Rich. -- not accepted
  Euphorbia dilatata Torr. & A. Gray -- not accepted
  Euphorbia dilatata E. Mey. -- not accepted
  Euphorbia dilobadena S. Carter -- accepted
  Euphorbia dilunguensis (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia diminuta S. Carter -- accepted
  Euphorbia dimorphocaulon P.H. Davis -- accepted
  Euphorbia dioeca Kunth -- accepted
  Euphorbia dioeca var. indivisa Engelm. -- not accepted
  Euphorbia dioica Hieron. -- not accepted
  Euphorbia dioica f. parvifolia Hieron. -- not accepted
  Euphorbia dioscoreoides Boiss. -- accepted
  Euphorbia dioscoreoides ssp. attenuata V.W. Steinm. -- accepted
  Euphorbia dioscoreoides ssp. dioscoreoides Boiss. -- accepted
  Euphorbia disclusa N.E. Br. -- not accepted
  Euphorbia discoidalis Chapm. -- accepted -- summer spurge
  Euphorbia discoidea (P.R.O. Bally) Bruyns -- accepted
  Euphorbia discolor Ledeb. -- accepted
  Euphorbia discolor Bertol. -- not accepted
  Euphorbia discolor Klotzsch ex Boiss. -- not accepted
  Euphorbia discolor Shuttlew. ex Boiss. -- not accepted
  Euphorbia discolor (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia discolor ssp. karoi (Freyn) Bassargin -- not accepted
  Euphorbia discolor var. glabra Loschk. & Polozhij -- not accepted
  Euphorbia discolor var. pilosa Loschk. & Polozhij -- not accepted
  Euphorbia discrepans S. Carter -- accepted
  Euphorbia discreta N.E. Br. -- not accepted
  Euphorbia dispersa L.C. Leach -- accepted
  Euphorbia dissimilis Cordem. -- not accepted
  Euphorbia dissitispina L.C. Leach -- accepted
  Euphorbia distans W. Fitzg. -- not accepted
  Euphorbia distincta Schur -- not accepted
  Euphorbia distincta Stschegl. -- not accepted
  Euphorbia distinctissima L.C. Leach -- accepted
  Euphorbia distinguenda Schur -- not accepted
  Euphorbia divaricata Jacq. -- not accepted
  Euphorbia divaricata A. Cunn. ex Benth. -- not accepted
  Euphorbia divergens Klotzsch -- not accepted
  Euphorbia diversifolia Poir. -- not accepted
  Euphorbia diversifolia Hochst. ex Boiss. -- not accepted
  Euphorbia diversifolia Schrad. ex Steud. -- not accepted
  Euphorbia diversifolia Willd. ex Boiss. -- not accepted
  Euphorbia djimilensis Boiss. -- accepted
  Euphorbia djurensis Schweinf. ex Pax -- not accepted
  Euphorbia dobrogensis Prodán -- not accepted
  Euphorbia dobrogensis f. latibracteata Prodán -- not accepted
  Euphorbia dolichoceras S. Carter -- accepted
  Euphorbia doloensis M.G. Gilbert -- accepted
  Euphorbia domingensis Spreng. ex Boiss. -- not accepted
  Euphorbia dominii Röhl. -- not accepted
  Euphorbia donii Oudejans -- accepted
  Euphorbia dorsiventralis Urb. -- not accepted
  Euphorbia dracunculoides Lam. -- accepted
  Euphorbia dracunculoides ssp. dracunculoides Lam. -- accepted
  Euphorbia dracunculoides ssp. eudracunculoides Maire -- not accepted
  Euphorbia dracunculoides ssp. flamandii (Batt.) Maire -- accepted
  Euphorbia dracunculoides ssp. glebulosa (Coss. & Durieu) Maire -- accepted
  Euphorbia dracunculoides ssp. hesperia Maire -- accepted
  Euphorbia dracunculoides ssp. inconspicua (Ball) Maire -- accepted
  Euphorbia dracunculoides ssp. intermedia (Maire) Maire -- accepted
  Euphorbia dracunculoides ssp. melillensis Maire -- not accepted
  Euphorbia dracunculoides ssp. volutiana Maire -- accepted
  Euphorbia dracunculoides var. africana Rikli & Schröt. -- not accepted
  Euphorbia dracunculoides var. ballii Maire -- not accepted
  Euphorbia dracunculoides var. faurei Maire -- not accepted
  Euphorbia dracunculoides var. pseudoafricana Maire -- not accepted
  Euphorbia dracunculoides var. taourirtensis (Batt. & Trab.) Batt. -- not accepted
  Euphorbia drastica Siev. -- not accepted
  Euphorbia dregeana E. Mey. ex Boiss. -- accepted
  Euphorbia dressleri V.W. Steinm. -- accepted
  Euphorbia drummondii Boiss. -- accepted
  Euphorbia drummondii var. dallachyana Baill. -- not accepted
  Euphorbia drummondii var. erythropeplis Baill. -- not accepted
  Euphorbia drummondii var. rubescens Benth. -- not accepted
  Euphorbia drupifera Thonn. -- accepted
  Euphorbia dubia Dierb. -- not accepted
  Euphorbia dubovikii Oudejans -- accepted
  Euphorbia duckei (Croizat) Oudejans -- accepted
  Euphorbia duclouxii H. Lév. & Vaniot -- not accepted
  Euphorbia dugandiana Croizat -- accepted
  Euphorbia dulcis L. -- accepted
  Euphorbia dulcis f. lanuginosa (Peterm.) Oudejans -- not accepted
  Euphorbia dulcis ssp. angulata (Jacq.) Rouy -- not accepted
  Euphorbia dulcis ssp. incompta (Ces.) Nyman -- not accepted
  Euphorbia dulcis var. alpigena (A. Kern.) Nyman -- not accepted
  Euphorbia dulcis var. chloradenia Boiss. -- not accepted
  Euphorbia dulcis var. incompta (Ces.) Nyman -- not accepted
  Euphorbia dulcis var. lanuginosa Peterm. -- not accepted
  Euphorbia dulcis var. viridiflora (Waldst. & Kit.) Nyman -- not accepted
  Euphorbia dumalis S. Carter -- accepted
  Euphorbia dumeticola P.R.O. Bally & S. Carter -- accepted
  Euphorbia dumetorum Coss. & Durieu ex Boiss. -- not accepted
  Euphorbia dumosa A. Rich. -- not accepted
  Euphorbia dumosa Boiss. -- not accepted
  Euphorbia dumosa E. Mey. ex Boiss. -- not accepted
  Euphorbia dunensis S. Carter -- accepted
  Euphorbia durandoi Chabert -- accepted
  Euphorbia duranii Ursch & Leandri -- accepted
  Euphorbia duranii var. ankaratrae Ursch & Leandri -- accepted
  Euphorbia duranii var. duranii Ursch & Leandri -- accepted
  Euphorbia duriuscula Pax & K. Hoffm. ex Herzog -- accepted
  Euphorbia duseimata R.A. Dyer -- accepted
  Euphorbia dussii Krug & Urb. ex Duss -- accepted
  Euphorbia duvalii Lecoq & Lamotte -- accepted
  Euphorbia duvalii ssp. ruscinonensis (Boiss.) Kerguélen -- not accepted
  Euphorbia dwyeri D.G. Burch -- accepted
  Euphorbia eanophylla Croizat -- accepted
  Euphorbia ebracteolata Hayata -- accepted
  Euphorbia ebracteolata f. magna Y.N. Lee -- not accepted
  Euphorbia ebracteolata var. anhweiensis (Hurus.) Oudejans -- not accepted
  Euphorbia echinata Salm-Dyck -- not accepted
  Euphorbia echinocarpa Sieber ex Boiss. -- not accepted
  Euphorbia echinulata (Stapf) Bruyns -- accepted
  Euphorbia echinus Hook. f. & Coss. -- not accepted
  Euphorbia ecklonii (Klotzsch & Garcke) Baill. -- accepted
  Euphorbia ecorniculata Kitam. -- accepted
  Euphorbia edgeworthii Boiss. -- accepted
  Euphorbia edmondii Hochr. -- accepted
  Euphorbia eduardoi L.C. Leach -- accepted
  Euphorbia edulis Lour. -- not accepted
  Euphorbia edulis Sessé & Moç. -- not accepted
  Euphorbia eendornensis Dinter -- not accepted
  Euphorbia effusa Ehrenb. ex Boiss. -- not accepted
  Euphorbia eggersii Urb. -- accepted
  Euphorbia eglandulosa V.W. Steinm. -- accepted
  Euphorbia ehrenbergii Sweet -- not accepted
  Euphorbia eichleri Müll. Arg. -- accepted
  Euphorbia eilensis S. Carter -- accepted
  Euphorbia einensis G. Will. -- accepted
  Euphorbia einensis var. anemoarenicola G. Will. -- accepted
  Euphorbia einensis var. einensis G. Will. -- accepted
  Euphorbia elastica Jum. -- accepted
  Euphorbia elastica Marloth -- not accepted
  Euphorbia elastica Poiss. & Pax -- not accepted
  Euphorbia elastica Altam. & Rose -- not accepted
  Euphorbia elata Brandegee -- not accepted
  Euphorbia eleanoriae (Lorence & W.L. Wagner) Govaerts -- accepted -- Na Pali sandmat
  Euphorbia elegans Spreng. -- accepted
  Euphorbia elegans var. laxa Boiss. -- not accepted
  Euphorbia elegantissima P.R.O. Bally & S. Carter -- accepted
  Euphorbia ellenbeckii Pax -- accepted
  Euphorbia elliotii Leandri -- accepted
  Euphorbia ellipsifolia Gilli -- accepted
  Euphorbia elliptica Lam. -- accepted
  Euphorbia elliptica Thunb. -- not accepted
  Euphorbia elodes Boiss. -- accepted
  Euphorbia elodes var. minor Boiss. -- not accepted
  Euphorbia elongata Poir. -- not accepted
  Euphorbia elquiensis Phil. -- accepted
  Euphorbia elwendica Stapf -- not accepted
  Euphorbia elymaitica Bornm. -- accepted
  Euphorbia emarginata Lam. -- not accepted
  Euphorbia emarginata Aiton -- not accepted
  Euphorbia emarginata (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia emirnensis Baker -- accepted
  Euphorbia emodi Hook. f. -- not accepted
  Euphorbia enalla Brandegee -- not accepted
  Euphorbia engelmannii Boiss. -- accepted
  Euphorbia engelmannii var. depressa Boiss. -- not accepted
  Euphorbia engleri Pax -- accepted
  Euphorbia engleriana Dinter -- accepted
  Euphorbia enneagona Haw. -- not accepted
  Euphorbia enormis N.E. Br. -- accepted
  Euphorbia ensifolia Baker -- accepted
  Euphorbia enterophora Drake -- accepted
  Euphorbia enterophora ssp. crassa Cremers -- accepted
  Euphorbia enterophora ssp. enterophora Drake -- accepted
  Euphorbia ephedroides E. Mey. ex Boiss. -- accepted
  Euphorbia ephedroides var. debilis L.C. Leach -- accepted
  Euphorbia ephedroides var. ephedroides E. Mey. ex Boiss. -- accepted
  Euphorbia ephedroides var. imminuta L.C. Leach & G. Will. -- accepted
  Euphorbia ephedromorpha Bartlett ex B.L. Rob. & Bartlett -- accepted
  Euphorbia epicyparissias (E. Mey. ex Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia epicyparissias E. Mey. ex Klotzsch & Garcke -- not accepted
  Euphorbia epilobiifolia W.T. Wang -- not accepted
  Euphorbia epiphylloides Kurz -- accepted
  Euphorbia epithymoides L. -- accepted -- cushion spurge
  Euphorbia epithymoides f. glabrescens Rostanski -- not accepted
  Euphorbia epithymoides ssp. lingulata (Heuff.) Nyman -- not accepted
  Euphorbia epithymoides var. polychroma (A. Kern.) Nyman -- not accepted
  Euphorbia epithymoides var. samnitica Fiori -- not accepted
  Euphorbia epithymoides var. verrucosa Fiori -- not accepted
  Euphorbia equisetiformis A. Stewart -- accepted
  Euphorbia eranthes R.A. Dyer & Milne-Redh. -- accepted
  Euphorbia eremica Jeps. -- not accepted
  Euphorbia eremocarpus Pharm. ex Wehmer -- not accepted
  Euphorbia eremophila A. Cunn. ex Hook. -- not accepted
  Euphorbia eremophila var. dracunculina Baill. -- not accepted
  Euphorbia eremophila var. filiformis Baill. -- not accepted
  Euphorbia eremophila var. genuina Baill. -- not accepted
  Euphorbia eremophila var. latifolia Boiss. -- not accepted
  Euphorbia eremophila var. microdendron Baill. -- not accepted
  Euphorbia eremophila var. oblonga Domin -- not accepted
  Euphorbia eremophila var. phyllanthina Baill. -- not accepted
  Euphorbia eremophila var. typica Domin -- not accepted
  Euphorbia eriantha Benth. -- accepted -- beetle spurge, Mexican poinsettia
  Euphorbia ericetorum Zumagl. -- not accepted
  Euphorbia ericifolia Pax -- not accepted
  Euphorbia ericoides Lam. -- accepted
  Euphorbia erigavensis S. Carter -- accepted
  Euphorbia erinacea Boiss. & Kotschy -- accepted
  Euphorbia eriocarpa Bertol. -- not accepted
  Euphorbia erioclada Boiss. & Heldr. -- not accepted
  Euphorbia eriogonoides Small -- not accepted
  Euphorbia eriophora Boiss. -- accepted
  Euphorbia eriophylla Kar. & Kir. -- not accepted
  Euphorbia erlangeri Pax -- accepted
  Euphorbia erosa Willd. -- not accepted
  Euphorbia erubescens Boiss. -- accepted
  Euphorbia erubescens E. Mey. ex Boiss. -- not accepted
  Euphorbia erythradenia Boiss. -- accepted
  Euphorbia erythradenia var. obovata Boiss. -- not accepted
  Euphorbia erythraea Hemsl. -- not accepted
  Euphorbia erythraeae (Berger) N.E. Br. -- not accepted
  Euphorbia erythrantha F. Muell. -- not accepted
  Euphorbia erythrina Link -- accepted
  Euphorbia erythrina var. burchellii Boiss. -- not accepted
  Euphorbia erythrocephala P.R.O. Bally & Milne-Redh. -- accepted
  Euphorbia erythroclada Boiss. -- accepted -- Dhudheri
  Euphorbia erythrocoma H. Lév. -- not accepted
  Euphorbia erythrocucullata Mangelsdorff -- accepted
  Euphorbia erythrodon Boiss. & Heldr. -- accepted
  Euphorbia erythrophylla Bertol. -- not accepted
  Euphorbia erythrorrhiza (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia erythrosperma A. Kern. -- not accepted
  Euphorbia erythroxyloides Baker -- accepted
  Euphorbia esculenta Marloth -- accepted
  Euphorbia espinosa Pax -- accepted
  Euphorbia espirituensis M.E. Jones -- not accepted
  Euphorbia esquirolii H. Lév. & Vaniot -- not accepted
  Euphorbia estevesii N. Zimm. & P.J. Braun -- accepted
  Euphorbia esula L. -- accepted -- spurge, wolf's milk, wolf's-milk, leafy spurge
  Euphorbia esula f. esulifolia (Thell.) Kuzmanov -- not accepted
  Euphorbia esula ssp. aragonensis Nyman -- not accepted
  Euphorbia esula ssp. chankoana (Vorosch.) Vorosch. -- not accepted
  Euphorbia esula ssp. esula L. -- accepted
  Euphorbia esula ssp. maglicensis (Rohlena) Hayek -- accepted
  Euphorbia esula ssp. nevadensis (Boiss. & Reut.) Malag. -- not accepted
  Euphorbia esula ssp. orientalis (Boiss.) Molero & Rovira -- not accepted
  Euphorbia esula ssp. paradoxa (Schur) Simonk. -- not accepted
  Euphorbia esula ssp. pseudocyparissias (Jord.) Nyman -- not accepted
  Euphorbia esula ssp. saratoi (Ardoino) P. Fourn. -- not accepted
  Euphorbia esula ssp. tommasiniana (Bertol.) Kuzmanov -- accepted
  Euphorbia esula ssp. tristis (Besser) Rouy -- not accepted
  Euphorbia esula var. acutifolia Lange -- not accepted
  Euphorbia esula var. ararica (Jord.) Nyman -- not accepted
  Euphorbia esula var. cyparissioides Boiss. -- accepted
  Euphorbia esula var. genuina Boiss. -- not accepted
  Euphorbia esula var. gracilis Nyman -- not accepted
  Euphorbia esula var. latifolia (C.A. Mey. ex Ledeb.) Ledeb. -- not accepted
  Euphorbia esula var. mosana (Lej.) Boiss. -- not accepted
  Euphorbia esula var. orientalis (Boiss.) Kuzmanov -- not accepted -- leafy spurge, spurge, oriental wolf's milk
  Euphorbia esula var. paradoxa Schur -- not accepted
  Euphorbia esula var. pinifolia Boiss. -- not accepted
  Euphorbia esula var. pseudotenuifolia Sennen -- not accepted
  Euphorbia esula var. riparia (Jord.) Schur -- not accepted
  Euphorbia esula var. taurica Besser -- not accepted
  Euphorbia esula var. triumfetti (Bertol.) Nyman -- not accepted
  Euphorbia esula var. uralensis (Fisch. ex Link) Dorn -- not accepted -- Russian leafy spurge, leafy spurge, spurge, wolf's milk
  Euphorbia esuliformis S. Schauer ex Nees & S. Schauer -- accepted
  Euphorbia esuliformis var. subdentata Engelm. -- not accepted
  Euphorbia esuloides (DC.) Ten. -- not accepted
  Euphorbia esuloides Velen. ex Nyman -- not accepted
  Euphorbia etuberculosa P.R.O. Bally & S. Carter -- accepted
  Euphorbia euboea Halácsy -- not accepted
  Euphorbia eugeniae Prokh. -- accepted
  Euphorbia eumyrmodes Baker ex Denis -- not accepted
  Euphorbia euonymoclada Croizat -- accepted
  Euphorbia euryops Bullock -- not accepted
  Euphorbia evansii Pax -- accepted
  Euphorbia evonymicarpa Chodat & Hassl. -- not accepted
  Euphorbia excelsa A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia exclusa S. Watson -- not accepted
  Euphorbia exigua L. -- accepted -- dwarf spurge, ésula meno, hierbecilla traidora, small spurge
  Euphorbia exigua ssp. exigua L. -- accepted
  Euphorbia exigua ssp. merinoi M. Laínz -- accepted
  Euphorbia exigua subvar. tricuspidata (Lapeyr.) Nyman -- not accepted
  Euphorbia exigua var. acuta L. -- not accepted
  Euphorbia exigua var. melillensis Sennen -- not accepted
  Euphorbia exigua var. pycnophylla K.U. Kramer & Westra -- not accepted
  Euphorbia exigua var. retusa L. -- not accepted
  Euphorbia exigua var. tricuspidata (Lapeyr.) W. Koch -- not accepted
  Euphorbia exigua var. truncata W. Koch -- not accepted
  Euphorbia exilis L.C. Leach -- accepted
  Euphorbia exilispina S. Carter -- accepted
  Euphorbia expansa Janka -- not accepted
  Euphorbia exserta (Small) Coker -- accepted -- coastal sand spurge
  Euphorbia exstipulata Engelm. -- accepted -- squareseed spurge, square-seed spurge, Clark Mountain spurge
  Euphorbia exstipulata var. lata Warnock & M.C. Johnst. -- not accepted -- squareseed spurge
  Euphorbia exumensis (Millsp.) Correll -- not accepted
  Euphorbia eyassiana P.R.O. Bally & S. Carter -- accepted
  Euphorbia eylesii Rendle -- accepted
  Euphorbia falcata L. -- accepted -- sickle spurge
  Euphorbia falcata f. rubra (Cav.) Nikolic -- not accepted
  Euphorbia falcata ssp. falcata L. -- accepted
  Euphorbia falcata ssp. macrostegia (Bornm.) O. Schwarz -- accepted
  Euphorbia falcata ssp. rubra (Cav.) Mateo & Figuerola -- not accepted
  Euphorbia falcata var. acuminata (Lam.) St.-Amans -- not accepted
  Euphorbia falcata var. croizatii Sennen & Mauricio -- not accepted
  Euphorbia falcata var. ecornuta Boiss. -- not accepted
  Euphorbia falcata var. falciformis Griseb. -- not accepted
  Euphorbia falcata var. galilaea (Boiss.) Boiss. -- accepted
  Euphorbia falcata var. genuina Maire -- not accepted
  Euphorbia falcata var. latifolia Font Quer -- not accepted
  Euphorbia falcata var. macrostegia Bornm. -- not accepted
  Euphorbia falcata var. maroccana Murb. -- not accepted
  Euphorbia falcata var. minor W. Koch -- not accepted
  Euphorbia falcata var. obscura (Loisel.) Nyman -- not accepted
  Euphorbia falcata var. peploiforme Sennen -- not accepted
  Euphorbia falcata var. rubra (Cav.) Boiss. -- not accepted
  Euphorbia fallax Hagenb. -- not accepted
  Euphorbia fallax Deysson -- not accepted
  Euphorbia falsa N.E. Br. -- not accepted
  Euphorbia famatamboay F. Friedmann & Cremers -- accepted
  Euphorbia famatamboay ssp. famatamboay F. Friedmann & Cremers -- accepted
  Euphorbia famatamboay ssp. itampolensis F. Friedmann & Cremers -- accepted
  Euphorbia fanshawei L.C. Leach -- accepted
  Euphorbia fascicaulis S. Carter -- accepted
  Euphorbia fasciculata Thunb. -- accepted
  Euphorbia fastuosa Sessé & Moç. -- not accepted
  Euphorbia faucicola L.C. Leach -- accepted
  Euphorbia fauriei H. Lév. & Vaniot -- accepted
  Euphorbia faurotii Franch. -- not accepted
  Euphorbia feddemae McVaugh -- accepted
  Euphorbia fendleri Torr. & A. Gray -- accepted -- Fendler's sandmat
  Euphorbia fendleri var. chaetocalyx Boiss. -- not accepted
  Euphorbia fendleri var. dissimilis Payson -- not accepted
  Euphorbia fendleri var. triligulata L.C. Wheeler -- not accepted
  Euphorbia fendleri var. typica L.C. Wheeler -- not accepted
  Euphorbia ferdinandii Baill. -- not accepted
  Euphorbia ferganensis B. Fedtsch. -- accepted
  Euphorbia ferox Marloth -- accepted
  Euphorbia fianarantsoae Ursch & Leandri -- accepted
  Euphorbia fidjiana Boiss. -- not accepted
  Euphorbia fieldii Sirj. -- not accepted
  Euphorbia fiha Decary -- not accepted
  Euphorbia fiherenensis Poiss. -- accepted
  Euphorbia filicaulis Urb. -- not accepted
  Euphorbia filicina Port. -- accepted
  Euphorbia filicina var. alpina Boiss. -- not accepted
  Euphorbia filicina var. montana Boiss. -- not accepted
  Euphorbia filiflora Marloth -- accepted
  Euphorbia filiflora var. nana G. Will. -- not accepted
  Euphorbia filiformis (P.R.O. Bally) Bruyns -- accepted
  Euphorbia filipes Benth. -- not accepted
  Euphorbia fimbriata Scop. -- not accepted
  Euphorbia fimbriata B. Heyne ex Roth -- not accepted
  Euphorbia fimbriata Wall. ex Boiss. -- not accepted
  Euphorbia fimbriata Boiss. -- not accepted
  Euphorbia fimbriata var. laxa Boiss. -- not accepted
  Euphorbia fimbrilligera Mart. -- not accepted
  Euphorbia finkii (Boiss.) V.W. Steinm. -- accepted
  Euphorbia finlaysonii J.M. Black -- not accepted
  Euphorbia firma Ledeb. -- not accepted
  Euphorbia fischeri Pax -- accepted
  Euphorbia fischeriana Steud. -- accepted
  Euphorbia fischeriana f. glaberrima (Maxim.) Oudejans -- not accepted
  Euphorbia fischeriana f. pilosa (Regel) Oudejans -- not accepted
  Euphorbia fischeriana var. komaroviana (Prokh.) G.L. Chu -- not accepted
  Euphorbia fissispina P.R.O. Bally & S. Carter -- accepted
  Euphorbia fistulosa M.S. Khan -- accepted
  Euphorbia flabellaris Anderson ex Boiss. -- not accepted
  Euphorbia flagelliformis (Engelm.) Engelm. -- not accepted
  Euphorbia flamandii Batt. -- not accepted
  Euphorbia flanaganii N.E. Br. -- accepted
  Euphorbia flaviana Carn.-Torres & Cordeiro -- accepted
  Euphorbia flavicoma DC. -- accepted
  Euphorbia flavicoma ssp. brittingeri (Opiz ex Samp.) O. Bolòs & Vigo -- not accepted
  Euphorbia flavicoma ssp. costeana (Rouy) Vindt & Guin. ex Greuter & Burdet -- accepted
  Euphorbia flavicoma ssp. flavicoma DC. -- accepted
  Euphorbia flavicoma ssp. giselae Simon Pall. -- accepted
  Euphorbia flavicoma ssp. mariolensis (Rouy) O. Bolòs & Vigo -- not accepted
  Euphorbia flavicoma ssp. occidentalis M. Laínz -- accepted
  Euphorbia flavicoma ssp. polygalifolia (Boiss. & Reut.) O. Bolòs & Vigo -- not accepted
  Euphorbia flavicoma ssp. verrucosa (L.) Breistr. -- not accepted
  Euphorbia flavicoma ssp. verrucosa (Fiori) Pignatti -- not accepted
  Euphorbia flavicoma var. ruscinonensis (Boiss.) O. Bolòs & Vigo -- not accepted
  Euphorbia flavicoma var. velutina (Boiss.) Breistr. -- not accepted
  Euphorbia flavopurpurea Willk. -- not accepted
  Euphorbia fleurotii Jord. -- not accepted
  Euphorbia flexicaulis Scheele -- not accepted
  Euphorbia flexuosa Kunth -- not accepted
  Euphorbia flindersica Halford & W.K. Harris -- accepted
  Euphorbia floccosiuscula M.E. Jones -- not accepted
  Euphorbia floresii Standl. -- not accepted
  Euphorbia floribunda Engelm. ex Boiss. -- accepted
  Euphorbia florida Engelm. -- accepted -- Chiricahua Mountain sandmat
  Euphorbia floridana Chapm. -- accepted -- Greater Florida spurge
  Euphorbia fluminis S. Carter -- accepted
  Euphorbia fodhliana Deflers -- not accepted
  Euphorbia foetida Kit. -- not accepted
  Euphorbia foetida Schult. ex Rchb. -- not accepted
  Euphorbia foetida Hoppe ex W.D.J. Koch -- not accepted
  Euphorbia foliata Buch.-Ham. ex Dillwyn -- not accepted
  Euphorbia foliiflua Ule -- not accepted
  Euphorbia foliolosa Boiss. -- accepted
  Euphorbia foliosa (Klotzsch & Garcke) N.E. Br. -- accepted
  Euphorbia fontanesii Steud. -- not accepted
  Euphorbia fontqueriana Greuter -- accepted
  Euphorbia forbesii Sherff -- not accepted
  Euphorbia formosana Hayata -- not accepted
  Euphorbia forolensis L.E. Newton -- accepted
  Euphorbia forskalii var. glabrata J. Gay -- not accepted
  Euphorbia forsskalii J. Gay -- accepted
  Euphorbia fortissima L.C. Leach -- accepted
  Euphorbia fortuita A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia fosbergii (J. Florence) Govaerts -- accepted
  Euphorbia fossulata Boiss. & Gaill. -- not accepted
  Euphorbia fournieri Leandri -- not accepted
  Euphorbia fournieri Rebut -- not accepted
  Euphorbia fractiflexa S. Carter & J.R.I. Wood -- accepted
  Euphorbia fragifera Jan -- accepted
  Euphorbia fragifera Schur -- not accepted
  Euphorbia fragifera var. inermis Nyman -- not accepted
  Euphorbia fragiliramulosa L.C. Leach -- not accepted
  Euphorbia fragilis Decne. -- not accepted
  Euphorbia francescae L.C. Leach -- not accepted
  Euphorbia franchetii B. Fedtsch. -- accepted
  Euphorbia franckiana A. Berger -- accepted
  Euphorbia francoana Boiss. -- accepted
  Euphorbia francoisii Leandri -- accepted
  Euphorbia francoisii var. crassicaulis Rauh -- accepted
  Euphorbia francoisii var. francoisii Leandri -- accepted
  Euphorbia francoisii var. rakotozafyi Cremers -- not accepted
  Euphorbia frangulifolia Kunth -- not accepted
  Euphorbia frankii Lavranos -- accepted
  Euphorbia fraseri Boiss. -- accepted
  Euphorbia fraterna N.E. Br. -- not accepted
  Euphorbia frickiana N.E. Br. -- not accepted
  Euphorbia friedrichiae Dinter -- accepted
  Euphorbia friesii (N.E. Br.) Bruyns -- accepted
  Euphorbia friesiorum (Hassl.) S. Carter -- accepted
  Euphorbia frivaldszkyana Dörfl. & Degen ex Halácsy -- not accepted
  Euphorbia froedinii Rech. f. -- not accepted
  Euphorbia fructus-pini Mill. -- not accepted
  Euphorbia frutescens N.E. Br. -- not accepted
  Euphorbia fruticosa Forssk. -- accepted -- Shurur
  Euphorbia fruticosa Biv. -- not accepted
  Euphorbia fruticosa Edgew. -- not accepted
  Euphorbia fruticulosa Engelm. ex Boiss. -- accepted
  Euphorbia fruticulosa var. fruticulosa Engelm. ex Boiss. -- accepted
  Euphorbia fruticulosa var. hirtella M.C. Johnst. -- accepted
  Euphorbia fuentesii V.W. Steinm. -- accepted
  Euphorbia fuhsii Bornm. & Sint. ex Prokh. -- not accepted
  Euphorbia fulgens Karw. ex Klotzsch -- accepted -- scarlet-plume
  Euphorbia fulva Stapf -- not accepted
  Euphorbia furcata N.E. Br. -- accepted
  Euphorbia furcatifolia M.G. Gilbert -- accepted
  Euphorbia furcillata Kunth -- accepted
  Euphorbia furcillata var. ribana M.C. Johnst. -- not accepted
  Euphorbia fusca Marloth -- not accepted
  Euphorbia fuscolanata Gilli -- accepted
  Euphorbia fusiformis Buch.-Ham. ex D. Don -- accepted
  Euphorbia fusiformis var. fusiformis Buch.-Ham. ex D. Don -- accepted
  Euphorbia fusiformis var. khandallensis (Blatt. & Hallb.) Binojk. & N.P. Balakr. -- accepted
  Euphorbia fwambensis (N.E. Br.) Bruyns -- accepted
  Euphorbia gaditana Coss. -- accepted
  Euphorbia gaillardotii Boiss. & Blanche -- accepted
  Euphorbia galapageia B.L. Rob. & Greenm. -- accepted
  Euphorbia galgalana S. Carter -- accepted
  Euphorbia galiciana McVaugh -- not accepted
  Euphorbia galilaea Boiss. -- not accepted
  Euphorbia galioides Boiss. -- not accepted
  Euphorbia galpinii Pax -- not accepted
  Euphorbia gammaranoi G. Will. -- accepted
  Euphorbia garanbiensis Hayata -- accepted
  Euphorbia garberi Engelm. ex Chapm. -- accepted -- Garber's spurge, Garber's sandmat
  Euphorbia gariepina Boiss. -- accepted
  Euphorbia gariepina ssp. balsamea (Welw. ex Hiern) L.C. Leach -- accepted
  Euphorbia gariepina ssp. gariepina Boiss. -- accepted
  Euphorbia garrullae Sennen -- not accepted
  Euphorbia garuana N.E. Br. -- accepted
  Euphorbia gasparrinii Boiss. -- accepted
  Euphorbia gasparrinii ssp. gasparrinii Boiss. -- accepted
  Euphorbia gasparrinii ssp. samnitica (Fiori) Pignatti -- accepted
  Euphorbia gaubae var. velutina (Bornm. & Gauba) Oudejans -- not accepted
  Euphorbia gaudichaudii Boiss. -- accepted -- spurge
  Euphorbia gaumeri Millsp. -- not accepted
  Euphorbia gayi Salis -- accepted
  Euphorbia gayi var. balearica Willk. -- not accepted
  Euphorbia geayi Costantin & Gallaud -- not accepted
  Euphorbia gebelica Brullo -- accepted
  Euphorbia gedrosiaca Rech. f., Aellen & Esfand. -- accepted
  Euphorbia geldorensis S. Carter -- accepted
  Euphorbia gemella Lag. -- not accepted
  Euphorbia geminata (Aiton) Marloth ex A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia geminiloba Millsp. -- not accepted
  Euphorbia gemmea P.R.O. Bally & S. Carter -- accepted
  Euphorbia geniculata Ortega -- not accepted
  Euphorbia genistoides P.J. Bergius -- accepted
  Euphorbia genistoides var. corifolia (Lam.) N.E. Br. -- accepted
  Euphorbia genistoides var. genistoides P.J. Bergius -- accepted
  Euphorbia genistoides var. leiocarpa Boiss. -- accepted
  Euphorbia genistoides var. major Boiss. -- accepted
  Euphorbia genoudiana Ursch & Leandri -- accepted
  Euphorbia gentilis N.E. Br. -- accepted
  Euphorbia gentilis ssp. gentilis N.E. Br. -- accepted
  Euphorbia gentilis ssp. tanquana L.C. Leach -- accepted
  Euphorbia gentryi V.W. Steinm. & T.F. Daniel -- accepted
  Euphorbia georgei Oudejans -- not accepted -- pointed sandmat
  Euphorbia georgiana Mayfield -- accepted
  Euphorbia gerardiana Jacq. -- not accepted
  Euphorbia gerardiana ssp. loiseleurii Rouy -- not accepted
  Euphorbia gerardiana ssp. saxicola Velen. -- not accepted
  Euphorbia gerardiana var. arenivaga Martrin-Donos -- not accepted
  Euphorbia gerardiana var. dentata Chabert -- not accepted
  Euphorbia gerardiana var. firma (Ledeb.) Boiss. -- not accepted
  Euphorbia gerardiana var. hohenackeri Boiss. -- not accepted
  Euphorbia gerardiana var. homophylla (Lange ex Schrank) Nyman -- not accepted
  Euphorbia gerardiana var. intermedia Savul. -- not accepted
  Euphorbia gerardiana var. lanceolata Cariot -- not accepted
  Euphorbia gerardiana var. latifolia J.J. Schmitz & Regel -- not accepted
  Euphorbia gerardiana var. minor Duby -- not accepted
  Euphorbia gerardiana var. sturii Holuby -- not accepted
  Euphorbia germainii Phil. -- accepted
  Euphorbia geroldii Rauh -- accepted
  Euphorbia gerstneriana Bruyns -- accepted
  Euphorbia geyeri Engelm. -- accepted -- Geyer's sandmat, Geyer's spurge
  Euphorbia geyeri var. geyeri Engelm. -- accepted -- Geyer's sandmat, Geyer's spurge
  Euphorbia geyeri var. microsperma A. Gray -- not accepted
  Euphorbia geyeri var. wheeleriana Warnock & M.C. Johnst. -- accepted -- Geyer's sandmat
  Euphorbia gibelliana Peola -- not accepted
  Euphorbia gibraltarica Wolley-Dod -- not accepted
  Euphorbia giessii L.C. Leach -- accepted
  Euphorbia gilbertiana Bisseret & Specks -- accepted
  Euphorbia gilbertii A. Berger -- not accepted
  Euphorbia gillettii P.R.O. Bally & S. Carter -- accepted
  Euphorbia gillettii ssp. gillettii P.R.O. Bally & S. Carter -- accepted
  Euphorbia gillettii ssp. tenuior S. Carter -- accepted
  Euphorbia giumboensis A. Hässl. -- accepted
  Euphorbia glaberrima K. Koch -- accepted
  Euphorbia glaberrima Klotzsch -- not accepted
  Euphorbia glabrata Sw. -- not accepted
  Euphorbia glabriflora Vis. -- accepted
  Euphorbia gladiata (P.R.O. Bally) Bruyns -- accepted
  Euphorbia gladiosa M.E. Jones -- not accepted
  Euphorbia glanduligera Pax -- accepted
  Euphorbia glareosa Pall. ex M. Bieb. -- accepted
  Euphorbia glareosa ssp. maleevii (Tamamsch.) Tamamsch. -- not accepted
  Euphorbia glareosa var. lasiocarpa Boiss. -- not accepted
  Euphorbia glareosa var. pannonica (Host) Nyman -- not accepted
  Euphorbia glareosa var. varnensis Velen. -- not accepted
  Euphorbia glauca G. Forst. -- accepted
  Euphorbia glauca Steud. -- not accepted
  Euphorbia glauca Roxb. -- not accepted
  Euphorbia glaucella Pax -- not accepted
  Euphorbia glaucophylla Poir. -- accepted
  Euphorbia glaucopoda Diels -- not accepted
  Euphorbia glebulosa Coss. & Durieu -- not accepted
  Euphorbia glebulosa ssp. intermedia Maire -- not accepted
  Euphorbia glebulosa var. almeriensis Lange -- not accepted
  Euphorbia glebulosa var. peplidea Boiss. -- not accepted
  Euphorbia globosa (Haw.) Sims -- accepted
  Euphorbia globulicaulis S. Carter -- accepted
  Euphorbia globulifera Kunth -- not accepted
  Euphorbia globulosa Boiss. -- not accepted
  Euphorbia glochidiata Pax -- accepted
  Euphorbia glomerifera (Millsp.) L.C. Wheeler -- not accepted
  Euphorbia glomerulans (Prokh.) Prokh. -- accepted
  Euphorbia glyptosperma Engelm. -- accepted -- ridgeseed spurge, ribseed sandmat
  Euphorbia glyptosperma var. pubescens Boiss. -- not accepted
  Euphorbia glyptosperma var. tenerrima Engelm. -- not accepted
  Euphorbia gmelinii Steud. -- accepted
  Euphorbia godana Buddens., Lawant & Lavranos -- accepted
  Euphorbia goeringii Steud. ex Boiss. -- not accepted
  Euphorbia goetzei Pax -- accepted
  Euphorbia goldei Prokh. -- not accepted
  Euphorbia goliana Comm. ex Lam. -- accepted
  Euphorbia golisana N.E. Br. -- not accepted
  Euphorbia gollmeriana Klotzsch ex Boiss. -- accepted
  Euphorbia golondrina L.C. Wheeler -- accepted -- Boquillas sandmat, canyon spurge, swallow spurge
  Euphorbia gorinii Chiov. -- not accepted
  Euphorbia gossweileri Pax -- not accepted
  Euphorbia gossypina Pax -- accepted
  Euphorbia gossypina ssp. gossypina Pax -- accepted
  Euphorbia gossypina ssp. mangulensis S. Carter -- accepted
  Euphorbia gossypina var. coccinea Pax -- accepted
  Euphorbia gottlebei Rauh -- accepted
  Euphorbia goudotii Boiss. -- not accepted
  Euphorbia goyazensis Boiss. -- accepted
  Euphorbia gracilicaulis L.C. Leach -- accepted
  Euphorbia gracilior Cronquist -- not accepted
  Euphorbia gracilipes Baill. -- not accepted
  Euphorbia graciliramea Pax -- accepted
  Euphorbia gracilis Elliott -- not accepted
  Euphorbia gracilis Loisel. -- not accepted
  Euphorbia gracilis Besser ex M. Bieb. -- not accepted
  Euphorbia gracilis var. rotundifolia A. Wood -- not accepted
  Euphorbia gracillima S. Watson -- accepted -- Mexican sandmat
  Euphorbia gradyi V.W. Steinm. & Ram.-Roa -- accepted
  Euphorbia graeca Boiss. & Spruner -- not accepted
  Euphorbia graeca ssp. dalmatica (Vis.) Nyman -- not accepted
  Euphorbia graeca var. brachyceras Candargy -- not accepted
  Euphorbia graminea Jacq. -- accepted -- grassleaf spurge
  Euphorbia graminea Schltdl. & Cham. -- not accepted
  Euphorbia graminea f. foliosa McVaugh -- accepted
  Euphorbia graminea var. acutifolia Boiss. -- not accepted
  Euphorbia graminea var. graminea Jacq. -- accepted
  Euphorbia graminea var. lancifolia Millsp. -- not accepted
  Euphorbia graminea var. novogaliciana McVaugh -- accepted
  Euphorbia graminea var. pedunculosa (A. Rich.) Boiss. -- not accepted
  Euphorbia graminea var. picta (Jacq.) Boiss. -- not accepted
  Euphorbia graminea var. subsinuata (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia graminea var. virgata Millsp. -- not accepted
  Euphorbia graminifolia Vill. -- accepted
  Euphorbia graminifolia Michx. -- not accepted
  Euphorbia graminifolia ssp. tommasiniana (Bertol.) Oudejans -- not accepted
  Euphorbia graminifolia ssp. zhiguliensis (Prokh.) Oudejans -- not accepted
  Euphorbia grammata (McVaugh) Oudejans -- accepted
  Euphorbia grandialata R.A. Dyer -- accepted
  Euphorbia grandicornis Goebel ex N.E. Br. -- accepted
  Euphorbia grandicornis ssp. grandicornis Goebel ex N.E. Br. -- accepted
  Euphorbia grandicornis ssp. sejuncta L.C. Leach -- accepted
  Euphorbia grandidens Haw. -- accepted
  Euphorbia grandidieri Baill. -- accepted
  Euphorbia grandifolia Haw. -- accepted
  Euphorbia grandis Lem. -- not accepted
  Euphorbia graniticola L.C. Leach -- accepted
  Euphorbia grantii Oliv. -- accepted
  Euphorbia grantii var. friesiorum Hassl. -- not accepted
  Euphorbia granulata Forssk. -- accepted
  Euphorbia granulata var. decumbens Forssk. -- not accepted
  Euphorbia granulata var. dentata N.E. Br. -- not accepted
  Euphorbia granulata var. glaberrima Boiss. -- not accepted
  Euphorbia granulata var. glabra Maire -- not accepted
  Euphorbia granulata var. granulata Forssk. -- accepted
  Euphorbia granulata var. turcomanica (Boiss.) Hadidi -- accepted
  Euphorbia graveolens N.E. Br. -- not accepted
  Euphorbia greenei Millsp. -- not accepted
  Euphorbia greenwayi P.R.O. Bally & S. Carter -- accepted
  Euphorbia greenwayi ssp. breviaculeata S. Carter -- accepted
  Euphorbia greenwayi ssp. greenwayi P.R.O. Bally & S. Carter -- accepted
  Euphorbia gregaria Marloth -- accepted
  Euphorbia gregersenii K. Malý ex Beck -- accepted
  Euphorbia greggii Engelm. ex Boiss. -- accepted
  Euphorbia greuteri N. Kilian, Kürschner & P. Hein -- accepted
  Euphorbia griffithii Hook. f. -- accepted
  Euphorbia griffithii var. bhutanica (Fisch.) D.G. Long -- accepted
  Euphorbia griffithii var. griffithii Hook. f. -- accepted
  Euphorbia grisea Engelm. ex Boiss. -- not accepted
  Euphorbia griseola Pax -- accepted
  Euphorbia griseola ssp. griseola Pax -- accepted
  Euphorbia griseola ssp. mashonica L.C. Leach -- accepted
  Euphorbia griseola ssp. zambiensis L.C. Leach -- accepted
  Euphorbia grisophylla M.S. Khan -- accepted
  Euphorbia groenewaldii R.A. Dyer -- accepted
  Euphorbia grosseri Pax -- accepted
  Euphorbia grossheimii (Prokh.) Prokh. -- accepted
  Euphorbia guachanca Haenke -- accepted
  Euphorbia guadalajarana S. Watson -- accepted
  Euphorbia guadalupensis J.T. Howell -- not accepted
  Euphorbia guanarensis Pittier -- accepted
  Euphorbia guaraniorum P. Carrillo & V.W. Steinm. -- accepted
  Euphorbia guatemalensis Standl. & Steyerm. -- accepted
  Euphorbia gueinzii Boiss. -- accepted
  Euphorbia guentheri (Pax) Bruyns -- accepted
  Euphorbia guerichiana Pax -- accepted
  Euphorbia guestii Blakelock -- not accepted
  Euphorbia guiengola W.R. Buck & Huft -- accepted
  Euphorbia guilielmii A. Gray -- not accepted
  Euphorbia guillauminiana Boiteau -- accepted
  Euphorbia guillemetii Ursch & Leandri -- not accepted
  Euphorbia gulestanica Podlech -- accepted
  Euphorbia gumaroi J. Meyrán -- accepted
  Euphorbia gummifera Boiss. -- accepted
  Euphorbia gundlachii Urb. -- not accepted
  Euphorbia guntensis (Prokh.) Prokh. -- accepted
  Euphorbia gussoneana Lojac. -- not accepted
  Euphorbia guyoniana Boiss. & Reut. -- accepted
  Euphorbia gymnadenia Urb. -- not accepted
  Euphorbia gymnocalycioides M.G. Gilbert & S. Carter -- accepted
  Euphorbia gymnoclada Boiss. -- accepted
  Euphorbia gymnoclada Engelm. -- not accepted
  Euphorbia gymnonota Urb. -- accepted
  Euphorbia gynophora Pax -- not accepted
  Euphorbia gypsicola Rech. f. & Aellen -- accepted
  Euphorbia gypsophila S. Carter -- accepted
  Euphorbia hadramautica Baker -- accepted
  Euphorbia haeleeleana D.R. Herbst -- accepted -- Kauai spurge, `akoko
  Euphorbia haematantha Boiss. -- accepted
  Euphorbia haematodes Boiss. -- not accepted
  Euphorbia hainanensis Croizat -- accepted
  Euphorbia hajhirensis Radcl.-Sm. -- accepted
  Euphorbia hakutosanensis Hurus. -- accepted
  Euphorbia halacsyi Formánek -- not accepted
  Euphorbia halemanui Sherff -- accepted -- Kauai sandmat
  Euphorbia halipedicola L.C. Leach -- accepted
  Euphorbia halleri Dinter -- not accepted
  Euphorbia hallii R.A. Dyer -- accepted
  Euphorbia halophila Miq. -- not accepted
  Euphorbia halophila Bornm. & Gauba -- not accepted
  Euphorbia halophila var. velutina Bornm. & Gauba -- not accepted
  Euphorbia hamaderoensis A.G. Mill. -- accepted -- Gisso, Jissoh
  Euphorbia hamata (Haw.) Sweet -- accepted
  Euphorbia hamiltonii Oudejans -- not accepted
  Euphorbia handeniensis S. Carter -- accepted
  Euphorbia handiensis Burchard -- accepted
  Euphorbia harmandii Gagnep. -- not accepted
  Euphorbia hartwegiana Boiss. -- not accepted
  Euphorbia hassleriana Chodat -- not accepted
  Euphorbia hastisquama N.E. Br. -- not accepted
  Euphorbia haussknechtii Boiss. -- accepted
  Euphorbia havanensis Willd. ex Boiss. -- not accepted
  Euphorbia hebecarpa Boiss. -- accepted
  Euphorbia hebegyne Pax & K. Hoffm. ex Emrich -- not accepted
  Euphorbia hedigeriana (Malaisse) Bruyns -- accepted
  Euphorbia hedyotoides N.E. Br. -- accepted
  Euphorbia heishuiensis W.T. Wang -- accepted
  Euphorbia heldreichii Orph. ex Boiss. -- accepted
  Euphorbia heldreichii var. roeseri Boiss. -- not accepted
  Euphorbia helenae Urb. -- accepted
  Euphorbia helenae ssp. grandifolia Borhidi & O. Muñiz -- accepted
  Euphorbia helenae ssp. helenae Urb. -- accepted
  Euphorbia heleniana Thell. & Stapf -- accepted
  Euphorbia helicothele Lem. -- not accepted
  Euphorbia helioscopia L. -- accepted -- madwoman's milk, summer spurge, sun spurge, wartweed
  Euphorbia helioscopia f. litoralis (Hurus.) Oudejans -- not accepted
  Euphorbia helioscopia f. major (Mutel) Oudejans -- not accepted
  Euphorbia helioscopia ssp. dominii (Röhl.) K. Malý -- not accepted
  Euphorbia helioscopia ssp. helioscopia L. -- accepted
  Euphorbia helioscopia ssp. helioscopioides (Loscos & Pardo) Nyman -- accepted
  Euphorbia helioscopia ssp. hiemalis A.P. Khokhr. -- accepted
  Euphorbia helioscopia var. haussknechtii (Boiss.) Boiss. -- not accepted
  Euphorbia helioscopia var. major Mutel -- not accepted
  Euphorbia helioscopioides Loscos & Pardo -- not accepted
  Euphorbia helioscopioides Blatt. -- not accepted
  Euphorbia helleri Millsp. -- accepted -- Heller's spurge
  Euphorbia helwigii Urb. & Ekman -- accepted
  Euphorbia henricksonii M.C. Johnst. -- accepted
  Euphorbia henryi Hemsl. -- not accepted
  Euphorbia hepatica P.R.O. Bally & S. Carter -- not accepted
  Euphorbia hepatica Urb. & Ekman -- accepted
  Euphorbia heptagona L. -- accepted
  Euphorbia heptapotamica Golosk. -- accepted
  Euphorbia heraldiana (Millsp.) Oudejans -- not accepted
  Euphorbia herbacea (Pax) Bruyns -- accepted
  Euphorbia herbstii (W.L. Wagner) Oudejans -- accepted -- Herbst's sandmat
  Euphorbia hercegovina Beck -- accepted
  Euphorbia hereroensis Pax -- not accepted
  Euphorbia hermanschwartzii Rauh -- accepted
  Euphorbia hermentiana Lem. -- not accepted
  Euphorbia hernandez-pachecoi Caball. -- not accepted
  Euphorbia herniariifolia Willd. -- accepted -- herniaria-leaf spurge
  Euphorbia herniariifolia var. glaberrima Halácsy -- accepted
  Euphorbia herniariifolia var. hebecarpa Boiss. -- not accepted
  Euphorbia herniariifolia var. herniariifolia Willd. -- accepted
  Euphorbia herniarioides Nutt. -- not accepted
  Euphorbia herpetorrhiza Prokh. -- not accepted
  Euphorbia herrei A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia herronii Riddell -- not accepted
  Euphorbia herteri Arechav. -- accepted
  Euphorbia herteri var. glabra Arechav. -- not accepted
  Euphorbia heteracantha Pax -- not accepted
  Euphorbia heteradena Jaub. & Spach -- accepted
  Euphorbia heteradena Boiss. & Buhse -- not accepted
  Euphorbia heterantha Nutt. -- not accepted
  Euphorbia heterochroma Pax -- accepted
  Euphorbia heterochroma ssp. heterochroma Pax -- accepted
  Euphorbia heterochroma ssp. tsavoensis S. Carter -- accepted
  Euphorbia heterochroma var. mitis (Pax) N.E. Br. -- not accepted
  Euphorbia heterodoxa Müll. Arg. -- accepted
  Euphorbia heterophylla L. -- accepted -- Mexican fireplant, painted euphorbia
  Euphorbia heterophylla Desf. -- not accepted
  Euphorbia heterophylla f. cyathophora (Murray) Voss -- not accepted
  Euphorbia heterophylla f. hirticaulis Kuntze -- not accepted
  Euphorbia heterophylla var. barbellata (Engelm.) Holz. -- not accepted
  Euphorbia heterophylla var. brasiliensis Müll. Arg. -- not accepted
  Euphorbia heterophylla var. cyathophora (Murray) Griseb. -- not accepted
  Euphorbia heterophylla var. elliptica (Lam.) Kuntze -- not accepted
  Euphorbia heterophylla var. eriocarpa Millsp. -- not accepted
  Euphorbia heterophylla var. geniculata (Ortega) M. Gómez -- not accepted
  Euphorbia heterophylla var. genuina Boiss. -- not accepted
  Euphorbia heterophylla var. graminifolia Engelm. -- not accepted
  Euphorbia heterophylla var. linifolia Kuntze -- not accepted
  Euphorbia heterophylla var. minor Boiss. -- not accepted
  Euphorbia heteropoda Pax -- accepted
  Euphorbia heteropoda var. formosa (P.R.O. Bally) Bruyns -- accepted
  Euphorbia heteropoda var. heteropoda Pax -- accepted
  Euphorbia heterospina S. Carter -- accepted
  Euphorbia heterospina ssp. baringoensis S. Carter -- accepted
  Euphorbia heterospina ssp. heterospina S. Carter -- accepted
  Euphorbia hexadenia Denis -- accepted
  Euphorbia hexagona Nutt. ex Spreng. -- accepted -- sixangle spurge, six-angle spurge
  Euphorbia hexagonoides S. Watson -- accepted
  Euphorbia heyligersiana P.I. Forst. -- accepted
  Euphorbia heyneana Spreng. -- accepted
  Euphorbia heyneana ssp. galioides (Boiss.) Panigrahi -- accepted
  Euphorbia heyneana ssp. heyneana Spreng. -- accepted
  Euphorbia heyneana ssp. nilagirica (Miq.) Panigrahi -- accepted
  Euphorbia heyneana var. scindica Boiss. -- not accepted
  Euphorbia hiberna Welw. ex Nyman -- not accepted
  Euphorbia hiberna Lepech. -- not accepted
  Euphorbia hibernica Spreng. -- not accepted
  Euphorbia hiernii (Croizat) Oudejans -- accepted
  Euphorbia hieroglyphica Coss. & Durieu ex Boiss. -- accepted
  Euphorbia hieroglyphica Correll -- not accepted
  Euphorbia hieronymi Subils -- accepted
  Euphorbia hieronymi f. parvifolia (Hieron.) Oudejans -- not accepted
  Euphorbia hierosolymitana Boiss. -- accepted
  Euphorbia hierosolymitana var. hierosolymitana Boiss. -- accepted
  Euphorbia hierosolymitana var. ramanensis (Baum) Zohary -- accepted
  Euphorbia hillebrandii var. palikeana O. Deg. & Sherff ex Sherff -- not accepted
  Euphorbia hillebrandii var. typica Sherff -- not accepted
  Euphorbia hillebrandii var. waimanoana Sherff -- not accepted
  Euphorbia himalayensis (Klotzsch) Boiss. -- accepted
  Euphorbia hindsiana Benth. -- accepted
  Euphorbia hinkleyorum I.M. Johnst. -- accepted
  Euphorbia hintonii L.C. Wheeler -- accepted
  Euphorbia hippocrepica Hemsl. -- not accepted
  Euphorbia hirsuta L. -- accepted
  Euphorbia hirsuta (Torr.) Wiegand -- not accepted
  Euphorbia hirsuta Kit. ex Boiss. -- not accepted
  Euphorbia hirsuta f. crispata (Willd. ex Hornem.) Oudejans -- not accepted
  Euphorbia hirsuta f. glabrescens (St.-Lag.) Oudejans -- not accepted
  Euphorbia hirsuta f. integrifolia (Deysson) Oudejans -- not accepted
  Euphorbia hirsuta f. laevis (Merino) Oudejans -- not accepted
  Euphorbia hirsuta f. serrata (Lojac.) Oudejans -- not accepted
  Euphorbia hirsuta f. serrulatifolia (Deysson) Oudejans -- not accepted
  Euphorbia hirsuta f. subglabra (Gren. & Godr.) Oudejans -- not accepted
  Euphorbia hirsuta var. leucotricha (Boiss.) Oudejans -- not accepted
  Euphorbia hirsuta var. subglabra (Gren. & Godr.) Nebot, De la Torrek, Mateo & Alcaraz -- not accepted
  Euphorbia hirta L. -- accepted -- pillpod sandmat, pillpod spurge, asthma spurge
  Euphorbia hirta var. destituta L.C. Wheeler -- not accepted
  Euphorbia hirta var. glaberrima Koidz. -- not accepted
  Euphorbia hirta var. nocens L.C. Wheeler -- not accepted
  Euphorbia hirta var. ophthalmica (Pers.) Allem & Irgang -- not accepted
  Euphorbia hirta var. procumbens (Boiss.) N.E. Br. -- not accepted
  Euphorbia hirta var. typica L.C. Wheeler -- not accepted
  Euphorbia hirtella Boiss. -- accepted
  Euphorbia hirtella var. brevifolia Müll. Arg. -- not accepted
  Euphorbia hirtella var. genuina Müll. Arg. -- not accepted
  Euphorbia hirtella var. longifolia Müll. Arg. -- not accepted
  Euphorbia hirtella var. pusilla Müll. Arg. -- not accepted
  Euphorbia hirtula Engelm. ex S. Watson -- not accepted
  Euphorbia hislopii N.E. Br. -- not accepted
  Euphorbia hispida Boiss. -- accepted
  Euphorbia hissarica Lipsky ex Prokh. -- not accepted
  Euphorbia hochstetteriana Pax -- not accepted
  Euphorbia hockii De Wild. -- accepted
  Euphorbia hoffmanniana (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia hofstaetteri Rauh -- accepted
  Euphorbia hohenackeri Hochst. ex Boiss. -- not accepted
  Euphorbia hohenackeri Orph. ex Boiss. -- not accepted
  Euphorbia holmesiae Lavranos -- accepted
  Euphorbia holochlorina Rizzini -- accepted
  Euphorbia holstii Pax -- not accepted
  Euphorbia holstii var. hebecarpa Pax -- not accepted
  Euphorbia homophylla Lange ex Schrank -- not accepted
  Euphorbia hondurana Standl. & L.O. Williams -- not accepted
  Euphorbia hookeri Steud. -- not accepted
  Euphorbia hookeri var. integrifolia Hillebr. -- not accepted
  Euphorbia hooveri L.C. Wheeler -- accepted -- Hoover's sandmat
  Euphorbia hormorrhiza Radcl.-Sm. -- accepted
  Euphorbia horombensis Ursch & Leandri -- accepted
  Euphorbia hortensis Engelm. ex Boiss. -- not accepted
  Euphorbia horwoodii S. Carter & Lavranos -- accepted
  Euphorbia hottentota Marloth -- accepted
  Euphorbia howellii L.C. Wheeler -- not accepted
  Euphorbia hsinchuensis (S.C. Lin & S.M. Chaw) C.Y. Wu & J.S. Ma -- accepted
  Euphorbia huanchahana (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia huanchahana ssp. huanchahana (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia huanchahana ssp. penazuelensis Croizat -- accepted
  Euphorbia huanchahana ssp. typica Croizat -- not accepted
  Euphorbia huanchahana var. peperomioides Croizat -- not accepted
  Euphorbia hubertii Pax -- accepted
  Euphorbia huillensis Pax -- not accepted
  Euphorbia humayensis Brandegee -- accepted
  Euphorbia humbertiana Maire -- not accepted
  Euphorbia humbertii Denis -- accepted
  Euphorbia humboldtii Willd. -- not accepted
  Euphorbia humifusa Willd. -- accepted
  Euphorbia humifusa f. glabra (Thell.) S.Z. Liou -- not accepted
  Euphorbia humifusa f. pilosa (Thell.) S.Z. Liou -- not accepted
  Euphorbia humifusa var. glabra Thell. -- not accepted
  Euphorbia humifusa var. pilosa Thell. -- not accepted
  Euphorbia humifusa var. pseudochamaesyce (Fisch. & C.A. Mey.) Murata -- not accepted
  Euphorbia humilis Ledeb. -- accepted
  Euphorbia humilis Royle -- not accepted
  Euphorbia humistrata Engelm. ex A. Gray -- accepted -- spreading sandmat
  Euphorbia hunzikeri Subils -- accepted
  Euphorbia hurusawae Oudejans -- not accepted
  Euphorbia hurusawae var. imaii (Hurus.) Oudejans -- not accepted
  Euphorbia huttonae N.E. Br. -- accepted
  Euphorbia hyberna L. -- accepted
  Euphorbia hyberna ssp. canuti (Parl.) Tutin -- accepted
  Euphorbia hyberna ssp. gibelliana (Peola) Raffaelli -- accepted
  Euphorbia hyberna ssp. hyberna L. -- accepted
  Euphorbia hyberna ssp. insularis (Boiss.) Briq. -- accepted
  Euphorbia hydnorae E. Mey. ex Boiss. -- not accepted
  Euphorbia hylonoma Hand.-Mazz. -- accepted
  Euphorbia hypericifolia L. -- accepted -- graceful sandmat
  Euphorbia hypericifolia var. bracteolaris (Boiss.) Ewart -- not accepted
  Euphorbia hypericifolia var. coimbatorensis Chandrab. -- not accepted
  Euphorbia hypericifolia var. communis Engelm. -- not accepted
  Euphorbia hypericifolia var. falciformis Klotzsch -- not accepted
  Euphorbia hypericifolia var. hirsuta Torr. -- not accepted
  Euphorbia hypericifolia var. maculata Klotzsch -- not accepted
  Euphorbia hypericifolia var. pusilla Webb -- not accepted
  Euphorbia hypogaea Marloth -- accepted
  Euphorbia hypoleuca (Prokh.) Rech. -- not accepted
  Euphorbia hyrcana Grossh. -- accepted
  Euphorbia hyssopifolia L. -- accepted -- hyssopleaf sandmat
  Euphorbia hyssopifolia var. blanchetii (Miq. ex Boiss.) Oudejans -- not accepted
  Euphorbia hyssopifolia var. paraguayensis (Chodat) Oudejans -- not accepted
  Euphorbia hyssopifolia var. pruinosa (Chodat) Oudejans -- not accepted
  Euphorbia hyssopifolia var. pubescenticocca Christenh. -- not accepted
  Euphorbia hyssopifolia var. pulchella (Kunth) Oudejans -- not accepted
  Euphorbia hyssopifolia var. uniflora (Chodat & Hassl.) Oudejans -- not accepted
  Euphorbia hystrix Jacq. -- not accepted
  Euphorbia iancannellii Bruyns -- accepted
  Euphorbia iberica Boiss. -- accepted
  Euphorbia iberica var. intermedia Boiss. -- not accepted
  Euphorbia idzuensis Nakai ex Hurus. -- not accepted
  Euphorbia iharanae Rauh -- accepted
  Euphorbia illirica Lam. -- accepted
  Euphorbia illirica ssp. semivillosa (Prokh.) Govaerts -- not accepted
  Euphorbia iloitaii Powys & S. Carter -- accepted
  Euphorbia imaii Hurus. -- not accepted
  Euphorbia imaii f. denudata Hurus. -- not accepted
  Euphorbia imbricata Vahl -- not accepted
  Euphorbia imbricata E.A. Bruce -- not accepted
  Euphorbia imbricata Sessé & Moç. -- not accepted
  Euphorbia imerina Cremers -- accepted
  Euphorbia imitata N.E. Br. -- accepted
  Euphorbia immersa P.R.O. Bally & S. Carter -- accepted -- Denegu
  Euphorbia imparispina S. Carter -- accepted
  Euphorbia imperfoliata Vis. -- accepted
  Euphorbia impervia A. Berger -- not accepted
  Euphorbia implexa Stapf -- not accepted
  Euphorbia impressa Chiov. -- accepted
  Euphorbia inaequalis N.E. Br. -- not accepted
  Euphorbia inaequilatera Sond. -- accepted
  Euphorbia inaequilatera var. dentata (N.E. Br.) M.G. Gilbert -- not accepted
  Euphorbia inaequilatera var. jemenica (Schweinf.) Oudejans -- not accepted
  Euphorbia inaequilatera var. perennis N.E. Br. -- not accepted
  Euphorbia inaequilatera var. spanothrix S. Carter -- not accepted
  Euphorbia inaequispina N.E. Br. -- accepted
  Euphorbia inaguaensis Oudejans -- accepted
  Euphorbia inappendiculata Domin -- accepted
  Euphorbia inappendiculata var. queenslandica Domin -- not accepted
  Euphorbia inarticulata Schweinf. -- accepted
  Euphorbia incana Schur -- not accepted
  Euphorbia incerta Brandegee -- accepted
  Euphorbia incisa Engelm. -- not accepted -- Mojave spurge
  Euphorbia incisa var. mollis (Norton) L.C. Wheeler -- not accepted -- Mojave spurge
  Euphorbia inclinata Boiss. -- not accepted
  Euphorbia incompta Ces. -- not accepted
  Euphorbia inconspicua Ball -- not accepted
  Euphorbia inculta P.R.O. Bally -- accepted
  Euphorbia incurva N.E. Br. -- not accepted
  Euphorbia indecora N.E. Br. -- accepted
  Euphorbia inderiensis Less. ex Kar. & Kir. -- accepted
  Euphorbia indica Lam. -- accepted
  Euphorbia indica var. angustifolia Boiss. -- not accepted
  Euphorbia indica var. pubescens Pax -- not accepted
  Euphorbia indistincta P.I. Forst. -- accepted
  Euphorbia indivisa (Engelm.) Tidestr. -- accepted -- royal sandmat
  Euphorbia indurescens L.C. Leach -- accepted
  Euphorbia inelegans N.E. Br. -- not accepted
  Euphorbia inermis Mill. -- accepted
  Euphorbia inermis Pancic ex Boiss. -- not accepted
  Euphorbia inermis var. huttonae A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia inermis var. laniglans N.E. Br. -- not accepted
  Euphorbia infausta N.E. Br. -- not accepted
  Euphorbia infernidialis V.W. Steinm. -- accepted
  Euphorbia infesta Pax -- not accepted
  Euphorbia inflexa Urb. & Ekman -- accepted
  Euphorbia ingallsii (Small) Cory -- not accepted
  Euphorbia ingens E. Mey. ex Boiss. -- accepted
  Euphorbia ingenticapsa L.C. Leach -- accepted
  Euphorbia innocua L.C. Wheeler -- accepted -- velvet spurge
  Euphorbia inornata (Dressler) Radcl.-Sm. -- not accepted
  Euphorbia insarmentosa P.G. Mey. -- accepted
  Euphorbia insulae-europae Pax -- not accepted
  Euphorbia insulana Vell. -- accepted
  Euphorbia insulana ssp. insulana Vell. -- accepted
  Euphorbia insulana ssp. pilcomayensis Croizat -- accepted
  Euphorbia insulana ssp. tovarensis (Boiss.) Croizat -- accepted
  Euphorbia insulana ssp. typica Croizat -- not accepted
  Euphorbia insulana var. minor Müll. Arg. -- not accepted
  Euphorbia insulana var. pilcomayensis (Croizat) Oudejans -- not accepted
  Euphorbia insulana var. tovarensis (Boiss.) Oudejans -- not accepted
  Euphorbia insularis Boiss. -- not accepted
  Euphorbia interaxillaris Fernald -- not accepted
  Euphorbia intercedens Pax -- not accepted
  Euphorbia intermedia Bréb. -- not accepted
  Euphorbia intermedia Fisch. & C.A. Mey. ex Boiss. -- not accepted
  Euphorbia intermedia Hochst. ex Boiss. -- not accepted
  Euphorbia intermixta S. Watson -- not accepted
  Euphorbia intisy Drake -- accepted
  Euphorbia intricata S. Carter -- accepted
  Euphorbia inundata Torr. ex Chapm. -- accepted -- Florida pineland spurge
  Euphorbia inundata var. garrettii E.L. Bridges & Orzell -- accepted -- Florida pineland spurge
  Euphorbia inundata var. inundata Torr. ex Chapm. -- accepted -- Florida pineland spurge
  Euphorbia inundaticola L.C. Leach -- accepted
  Euphorbia invaginata Croizat -- accepted
  Euphorbia invenusta (N.E. Br.) Bruyns -- accepted
  Euphorbia invenusta var. angusta (P.R.O. Bally) Bruyns -- accepted
  Euphorbia invenusta var. invenusta (N.E. Br.) Bruyns -- accepted
  Euphorbia involucrata (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia involucrata var. megastegia Boiss. -- not accepted
  Euphorbia involuta Millsp. -- not accepted
  Euphorbia ipecacuanhae L. -- accepted -- American ipecac, Carolina ipecac
  Euphorbia ipecacuanhae f. linearis (Moldenke) Fernald -- not accepted
  Euphorbia ipecacuanhae var. gracilis Boiss. -- not accepted
  Euphorbia ipecacuanhae var. portulacoides Boiss. -- not accepted
  Euphorbia iranshahri Pahlevani -- accepted
  Euphorbia irgisensis Litv. -- accepted
  Euphorbia isacantha Pax -- accepted
  Euphorbia isalensis Leandri -- accepted
  Euphorbia isatidifolia Lam. -- accepted
  Euphorbia isatis Pers. -- not accepted
  Euphorbia isaurica M.S. Khan -- accepted
  Euphorbia isophylla Bornm. -- not accepted
  Euphorbia ispahanica Boiss. -- not accepted
  Euphorbia issykkulensis Prokh. -- not accepted
  Euphorbia isthmia Täckh. -- not accepted
  Euphorbia italica Lam. -- not accepted
  Euphorbia italica Salzm. ex Boiss. -- not accepted
  Euphorbia italica G. Tineo -- not accepted
  Euphorbia iteophylla Boiss. -- not accepted
  Euphorbia itremensis Kimnach & Lavranos -- accepted
  Euphorbia ivanjohnstonii M.C. Johnst. -- accepted
  Euphorbia ixtlana Huft -- accepted
  Euphorbia jablonskii V.W. Steinm. -- accepted
  Euphorbia jacquemontii Boiss. -- accepted
  Euphorbia jacquemontii var. jacquemontii Boiss. -- accepted
  Euphorbia jacquemontii var. lasiocarpa Boiss. -- accepted
  Euphorbia jacquinii Fenzl ex Boiss. -- accepted
  Euphorbia jacquiniiflora Hook. -- not accepted
  Euphorbia jacquiniiflora Neumann -- not accepted
  Euphorbia jaegeri V.W. Steinm. & J. André -- accepted
  Euphorbia jaegeriana Pax -- not accepted
  Euphorbia jaliscensis B.L. Rob. & Greenm. -- accepted
  Euphorbia jaliscensis var. durangensis Millsp. -- not accepted
  Euphorbia jamesonii Boiss. -- accepted
  Euphorbia jansenvillensis Nel -- accepted
  Euphorbia japonica Siebold ex Boiss. -- not accepted
  Euphorbia japonica Zoll. ex Boiss. -- not accepted
  Euphorbia japygica Ten. -- not accepted
  Euphorbia jaroslavii Poljakov -- not accepted
  Euphorbia jasiewiczii (Chrtek & Krísa) Radcl.-Sm. -- not accepted
  Euphorbia jatrophoides Pax -- accepted
  Euphorbia javanica Jungh. -- not accepted
  Euphorbia jaxartica (Prokh.) Krylov -- accepted
  Euphorbia jejuna M.C. Johnst. & Warnock -- accepted -- dwarf sandmat, dwarf broomspurge
  Euphorbia jenisseiensis Baikov -- accepted
  Euphorbia jessonii Oudejans -- not accepted
  Euphorbia jodhpurensis Blatt. & Hallb. -- accepted
  Euphorbia johannis S. Carter -- accepted
  Euphorbia johnsonii N.E. Br. -- not accepted
  Euphorbia johnstonii Mayfield -- accepted
  Euphorbia jolkinii Boiss. -- accepted
  Euphorbia jolkinii f. insularis (Hurus.) Oudejans -- not accepted
  Euphorbia jonesii Millsp. -- not accepted
  Euphorbia josei Oudejans -- not accepted -- Jose spurge
  Euphorbia jovetii Huguet -- not accepted
  Euphorbia joyae P.R.O. Bally & S. Carter -- accepted
  Euphorbia jubata L.C. Leach -- accepted
  Euphorbia juncea Aiton -- not accepted
  Euphorbia junciformis Sessé & Moç. -- not accepted
  Euphorbia juncoides (Haw.) Sweet -- not accepted
  Euphorbia juniperifolia Rich. ex Boiss. -- not accepted
  Euphorbia juttae Dinter -- accepted
  Euphorbia kabridarensis Thulin -- accepted
  Euphorbia kaessneri Pax -- accepted
  Euphorbia kaessneri (N.E. Br.) Bruyns -- not accepted
  Euphorbia kahirensis Raeusch. -- not accepted
  Euphorbia kalaharica Marloth -- not accepted
  Euphorbia kaleniczenkii Czern. -- not accepted
  Euphorbia kalisana S. Carter -- accepted
  Euphorbia kamerunica Pax -- accepted
  Euphorbia kamponii Rauh & Petignat -- accepted
  Euphorbia kanalensis Boiss. -- accepted
  Euphorbia kanaorica Boiss. -- accepted
  Euphorbia kangdingensis W.T. Wang -- not accepted
  Euphorbia kangdingensis var. puberula W.T. Wang -- not accepted
  Euphorbia kansuensis Prokh. -- accepted
  Euphorbia kansui S.L. Liou ex S.B. Ho -- accepted
  Euphorbia kaokoensis (A.C. White, R.A. Dyer & B. Sloane) L.C. Leach -- accepted
  Euphorbia karibensis S. Carter -- accepted
  Euphorbia karoi Freyn -- not accepted
  Euphorbia karroensis (Boiss.) N.E. Br. -- accepted
  Euphorbia karwinskyi Boiss. -- not accepted
  Euphorbia kaschgarica Regel -- not accepted
  Euphorbia katrajensis Gage -- accepted
  Euphorbia kazerouni Parsa -- not accepted
  Euphorbia keithii R.A. Dyer -- accepted
  Euphorbia kelleri Pax -- accepted
  Euphorbia kelleri var. kelleri Pax -- accepted
  Euphorbia kelleri var. latifolia Pax -- accepted
  Euphorbia kemulariae Ter-Chatsch. -- not accepted
  Euphorbia kerneri Huter ex A. Kern. -- accepted
  Euphorbia kerrii Craib -- not accepted
  Euphorbia kerstingii Pax -- accepted
  Euphorbia khasyana Boiss. -- accepted
  Euphorbia kibwezensis N.E. Br. -- not accepted
  Euphorbia kilimandscharica Pax ex Engl. -- not accepted
  Euphorbia kilwana N.E. Br. -- accepted
  Euphorbia kimberleyana (G. Will.) Bruyns -- accepted
  Euphorbia kimberleyensis B.G. Thomson -- accepted
  Euphorbia kimmerica Lipsky ex Grossh. -- accepted
  Euphorbia kingdon-wardii Binojk. & N.P. Balakr. -- accepted
  Euphorbia kirimzjulica Stepanov -- accepted
  Euphorbia kiritensis P.R.O. Bally & S. Carter -- accepted
  Euphorbia kirkii (N.E. Br.) Bruyns -- accepted
  Euphorbia kischenensis Vierh. -- accepted
  Euphorbia kitagawae (Hurus.) Kitag. -- not accepted
  Euphorbia klokoviana Railyan -- not accepted
  Euphorbia klokovii Dubovik -- not accepted
  Euphorbia klotzschiana Miq. -- not accepted
  Euphorbia klotzschii Oudejans -- accepted
  Euphorbia klotzschii var. argentina (Müll. Arg. ex Griseb.) Oudejans -- not accepted
  Euphorbia klotzschii var. dentata (R.E. Fr.) Oudejans -- not accepted
  Euphorbia klotzschii var. schizosepala (Engelm. ex Boiss.) Oudejans -- not accepted
  Euphorbia knobelii Letty -- accepted
  Euphorbia knuthii Pax -- accepted
  Euphorbia knuthii ssp. johnsonii (N.E. Br.) L.C. Leach -- accepted
  Euphorbia knuthii ssp. knuthii Pax -- accepted
  Euphorbia koerneriana Allem & Irgang -- not accepted
  Euphorbia komaroviana Prokh. -- accepted
  Euphorbia kondoi Rauh & Razaf. -- accepted
  Euphorbia kopetdaghensis Korovin ex Prokh. -- not accepted
  Euphorbia kopetdaghi (Prokh.) Prokh. -- accepted
  Euphorbia korovinii Pavlov -- not accepted
  Euphorbia korshinskyi Geltman -- accepted
  Euphorbia kotschyana Fenzl -- accepted
  Euphorbia kotschyana var. kotschyana Fenzl -- accepted
  Euphorbia kotschyana var. thyrsoidea Boiss. -- accepted
  Euphorbia kouandenensis Beille ex A. Chev. -- accepted
  Euphorbia kozlovii Prokh. -- accepted
  Euphorbia kozlovii var. angustifolia S.Q. Zhou -- not accepted
  Euphorbia kralickii Coss. ex Batt. & Trab. -- not accepted
  Euphorbia kraussiana Bernh. ex Krauss -- accepted
  Euphorbia kudrjaschevii (Pazij) Prokh. -- accepted
  Euphorbia kundelunguensis (Malaisse) Bruyns -- accepted
  Euphorbia kunzei Lehm. -- not accepted
  Euphorbia kurdica Boiss. -- not accepted
  Euphorbia kuriensis Vierh. -- accepted
  Euphorbia kurioca Bornm. -- not accepted
  Euphorbia kurtzii Subils -- accepted
  Euphorbia kuwaleana O. Deg. & Sherff -- accepted -- kokomalei
  Euphorbia kwebensis N.E. Br. -- not accepted
  Euphorbia labatii Rauh & Bard.-Vauc. -- accepted
  Euphorbia labbei H. Lév. -- not accepted
  Euphorbia lacei Craib -- accepted
  Euphorbia lacera Boiss. -- accepted
  Euphorbia laciniata Panigrahi -- accepted
  Euphorbia laciniata ssp. burmanica Panigrahi -- not accepted
  Euphorbia lactea Haw. -- accepted -- mottled spurge
  Euphorbia lactea Roxb. -- not accepted
  Euphorbia lactiflua Phil. -- accepted
  Euphorbia laeta Aiton -- not accepted
  Euphorbia laeta B. Heyne ex Roth -- not accepted
  Euphorbia laevigata Lam. -- accepted
  Euphorbia laevigata Vahl -- not accepted
  Euphorbia lagascae Spreng. -- accepted
  Euphorbia lagascae Spruner ex Nyman -- not accepted
  Euphorbia lagunensis Huft -- accepted
  Euphorbia lagunillarum Croizat -- accepted
  Euphorbia laikipiensis S. Carter -- accepted
  Euphorbia lamarckii Sweet -- accepted
  Euphorbia lamarckii f. latibracteata (G. Kunkel) Oudejans -- not accepted
  Euphorbia lamarckii ssp. regis-jubae (Webb & Berthel.) Oudejans -- not accepted
  Euphorbia lamarckii var. berthelotii (Bolle ex Boiss.) Oudejans -- not accepted
  Euphorbia lamarckii var. desfoliata (Menezes) Oudejans -- not accepted
  Euphorbia lamarckii var. pseudodendroides (H. Lindb.) Oudejans -- not accepted
  Euphorbia lambii Svent. -- not accepted
  Euphorbia lamprocarpa (Prokh.) Prokh. -- accepted
  Euphorbia lanata Sieber ex Spreng. -- not accepted
  Euphorbia lancasteriana Radcl.-Sm. -- not accepted
  Euphorbia lanceolaria Wall. -- not accepted
  Euphorbia lanceolata Spreng. -- not accepted
  Euphorbia lanceolata Larrañaga -- not accepted
  Euphorbia lanceolata Liou -- not accepted
  Euphorbia lanceolata Phil. -- not accepted
  Euphorbia lancifolia Schltdl. -- accepted -- ixbut
  Euphorbia lancifolia var. villicaulis Fernald -- not accepted
  Euphorbia lanuginosa Lam. -- not accepted
  Euphorbia lanuginosa Thuill. -- not accepted
  Euphorbia laredana Millsp. -- accepted -- Laredo sandmat
  Euphorbia larica Boiss. -- accepted
  Euphorbia laro Drake -- not accepted
  Euphorbia larranagae Oudejans -- accepted
  Euphorbia lasiocarpa K. Koch -- not accepted
  Euphorbia lasiocarpa var. subprostrata Boiss. -- not accepted
  Euphorbia lasiocaula Boiss. -- not accepted
  Euphorbia lasiocaula f. maritima (Hurus.) T. Kuros. & H. Ohashi -- not accepted
  Euphorbia lasiocaula var. ibukiensis (Hurus.) T. Kuros. & H. Ohashi -- not accepted
  Euphorbia lata Engelm. -- accepted -- hoary sandmat, broadleaf spurge
  Euphorbia latazi Kunth -- not accepted
  Euphorbia latazi var. glabra Steyerm. -- not accepted
  Euphorbia latericolor Brandegee -- not accepted
  Euphorbia lateriflora Schumach. -- accepted
  Euphorbia lateriflora Jaub. & Spach -- not accepted
  Euphorbia lathyris L. -- accepted -- moleplant, cañamón purgante, gopher plant, caper spurge
  Euphorbia lathyris Georgi -- not accepted
  Euphorbia lathyris var. minor Hook. & Arn. -- not accepted
  Euphorbia latifolia C.A. Mey. ex Ledeb. -- accepted
  Euphorbia latifolia Boiss. -- not accepted
  Euphorbia latifolia Salzm. ex Boiss. -- not accepted
  Euphorbia latifolia var. intermedia Boiss. -- not accepted
  Euphorbia laurentii De Wild. -- not accepted
  Euphorbia laurifolia Juss. ex Lam. -- accepted -- Nonocta, noñocta, Lechero
  Euphorbia lavicola S. Carter -- accepted
  Euphorbia lavranii L.C. Leach -- accepted
  Euphorbia lawsonii Binojk. & Dwarakan -- accepted
  Euphorbia laxiflora Kuntze -- not accepted
  Euphorbia lecheoides Millsp. -- accepted
  Euphorbia lecheoides var. exumensis (Millsp.) Oudejans -- accepted
  Euphorbia lecheoides var. lecheoides Millsp. -- accepted
  Euphorbia lecheoides var. wilsonii (Millsp.) Oudejans -- accepted
  Euphorbia ledebourii Boiss. -- not accepted
  Euphorbia ledermanniana Pax & K. Hoffm. -- accepted
  Euphorbia ledienii A. Berger -- accepted
  Euphorbia lehmanniana Pax -- not accepted
  Euphorbia lehmbachii Pax -- not accepted
  Euphorbia leiococca (Engelm.) Norton -- not accepted
  Euphorbia leiosperma Sibth. & Sm. -- not accepted
  Euphorbia leiosperma (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia leistneri R.H. Archer -- accepted
  Euphorbia lemaireana Boiss. -- not accepted
  Euphorbia lenensis Baikov -- accepted
  Euphorbia lenewtonii S. Carter -- accepted
  Euphorbia leonardii (D.G. Burch) Radcl.-Sm. -- accepted
  Euphorbia leoncroizatii Oudejans -- not accepted
  Euphorbia leonensis N.E. Br. -- not accepted
  Euphorbia leontopoda S. Carter -- accepted
  Euphorbia lepidocarpa Pax -- not accepted
  Euphorbia leptalea S. Schauer -- not accepted
  Euphorbia leptocaula Boiss. -- accepted
  Euphorbia leptocaula var. praecox Boiss. -- not accepted
  Euphorbia leptocera Engelm. ex Boiss. -- not accepted
  Euphorbia leptocera Engelm. ex Torr. -- not accepted
  Euphorbia leptocera var. crenulata (Engelm.) Boiss. -- not accepted
  Euphorbia leptoclada Balf. f. -- accepted
  Euphorbia leptomyura Baill. ex Poiss. -- not accepted
  Euphorbia leptophylla Vill. -- not accepted
  Euphorbia leshumensis N.E. Br. -- not accepted
  Euphorbia letestuana (Denis) Bruyns -- accepted
  Euphorbia letestui J. Raynal -- accepted
  Euphorbia letouzeyana (Malaisse) Bruyns -- accepted
  Euphorbia leucantha (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia leucocephala Lotsy -- accepted -- pascuita
  Euphorbia leucochlamys Chiov. -- accepted
  Euphorbia leucodendron Drake -- not accepted
  Euphorbia leucodendron ssp. oncoclada (Drake) Rauh & Koutnik -- not accepted
  Euphorbia leucoloma Raf. -- not accepted
  Euphorbia leuconeura Boiss. -- accepted
  Euphorbia leucophylla Benth. -- accepted
  Euphorbia leucophylla ssp. comcaacorum V.W. Steinm. & Felger -- accepted
  Euphorbia leucophylla ssp. leucophylla Benth. -- accepted
  Euphorbia leucotricha Boiss. -- not accepted
  Euphorbia leviana Croizat -- not accepted
  Euphorbia levis Poir. -- not accepted
  Euphorbia levis var. imbricata Boiss. -- not accepted
  Euphorbia libassii Lojac. -- not accepted
  Euphorbia lignosa Marloth -- accepted
  Euphorbia ligulata Chaub. -- not accepted
  Euphorbia ligustrina Boiss. -- not accepted
  Euphorbia liliputiana C. Wright ex Urb. -- not accepted
  Euphorbia limaensis Oudejans -- not accepted
  Euphorbia limpopoana L.C. Leach ex S. Carter -- accepted
  Euphorbia linaria Link -- not accepted
  Euphorbia linarifolia Willd. -- not accepted
  Euphorbia linariifolia Lam. -- not accepted
  Euphorbia linarioides Poir. -- not accepted
  Euphorbia lindeniana A. Rich. -- not accepted
  Euphorbia lindenii (S. Carter) Bruyns -- accepted
  Euphorbia lindheimeriana Engelm. ex Boiss. -- not accepted
  Euphorbia linearibracteata L.C. Leach -- accepted
  Euphorbia linearifolia Roth -- not accepted
  Euphorbia linearifolia var. nallamalayana J.L. Ellis -- not accepted
  Euphorbia linearis Retz. -- accepted
  Euphorbia linearis Schrank -- not accepted
  Euphorbia linearis B. Heyne ex Roth -- not accepted
  Euphorbia linearis var. heterophylla Kuntze -- not accepted
  Euphorbia lineata S. Watson -- accepted
  Euphorbia lingiana C. Shih -- not accepted
  Euphorbia linguiformis McVaugh -- accepted
  Euphorbia linguiformis var. actinadenia (McVaugh) Oudejans -- not accepted
  Euphorbia lingulata Heuff. -- not accepted
  Euphorbia linifolia Nath. ex L. -- not accepted
  Euphorbia linifolia Wall. ex Boiss. -- not accepted
  Euphorbia linifolia Burm. f. -- not accepted
  Euphorbia linifolia Vahl -- not accepted
  Euphorbia lioui C.Y. Wu & J.S. Ma -- accepted
  Euphorbia lipskyi (Prokh.) Prokh. -- accepted
  Euphorbia lissosperma S. Carter -- accepted
  Euphorbia literata Jacq. -- not accepted
  Euphorbia litoralis Kunth -- not accepted
  Euphorbia litoralis Sessé & Moç. -- not accepted
  Euphorbia litoralis Noë ex Nyman -- not accepted
  Euphorbia littorea Miq. ex Boiss. -- not accepted
  Euphorbia litwinowii Prokh. -- not accepted
  Euphorbia liukiuensis Hayata -- accepted
  Euphorbia livida E. Mey. ex Boiss. -- accepted
  Euphorbia lividiflora L.C. Leach -- accepted
  Euphorbia loandensis N.E. Br. -- accepted
  Euphorbia lockhartii Steud. -- not accepted
  Euphorbia lohaensis Baill. -- not accepted
  Euphorbia loiseleurii Rouy -- not accepted
  Euphorbia lombardensis Nel -- not accepted
  Euphorbia lomelii V.W. Steinm. -- accepted
  Euphorbia longibracteata DC. -- not accepted
  Euphorbia longibracteata Pax -- not accepted
  Euphorbia longicorniculata Kitam. -- not accepted
  Euphorbia longicornuta S. Watson -- accepted
  Euphorbia longicornuta Pax ex Engl. -- not accepted
  Euphorbia longicornuta var. pubescens N.E. Br. -- not accepted
  Euphorbia longicruris Scheele -- accepted -- wedgeleaf spurge, wedge-leaf spurge
  Euphorbia longifolia Lam. -- not accepted
  Euphorbia longifolia D. Don -- not accepted
  Euphorbia longifolia Baill. ex Boiss. -- not accepted
  Euphorbia longifolia Gueldenst. -- not accepted
  Euphorbia longifolia var. canariensis (Boiss.) Oudejans -- not accepted
  Euphorbia longinsulicola S.R. Hill -- accepted
  Euphorbia longipetiolata Pax & K. Hoffm. -- not accepted
  Euphorbia longipetiolata M.E. Jones -- not accepted
  Euphorbia longipila Rusby -- not accepted
  Euphorbia longiradiata Lapeyr. -- not accepted
  Euphorbia longiramosa S. Watson -- not accepted
  Euphorbia longispina Chiov. -- accepted
  Euphorbia longistyla Boiss. -- accepted
  Euphorbia longituberculosa Hochst. ex Boiss. -- accepted
  Euphorbia lophiosperma S. Carter -- accepted
  Euphorbia lophogona Lam. -- accepted
  Euphorbia lophogona var. lophogona Lam. -- accepted
  Euphorbia lophogona var. tenuicaulis Rauh -- accepted
  Euphorbia lorentii Hochst. -- not accepted
  Euphorbia lorentzii Müll. Arg. -- not accepted
  Euphorbia loreyi Jord. -- not accepted
  Euphorbia loricata Lam. -- accepted
  Euphorbia lorifolia (A. Gray ex H. Mann) Hillebr. -- not accepted
  Euphorbia lorifolia var. gracilis Rock -- not accepted
  Euphorbia lottiae V.W. Steinm. -- accepted
  Euphorbia louisii Thiébaut -- not accepted
  Euphorbia louwii L.C. Leach -- accepted
  Euphorbia luapulana L.C. Leach -- accepted
  Euphorbia lucida Waldst. & Kit. -- accepted -- shining spurge
  Euphorbia lucida f. angustifolia (Tausch) Slavík -- not accepted
  Euphorbia lucida f. leiocarpa (Tausch) Slavík -- not accepted
  Euphorbia lucida var. androsaemifolia (Haw.) Schur -- not accepted
  Euphorbia lucida var. angustifolia Tausch -- not accepted
  Euphorbia lucida var. esulolucida André -- not accepted
  Euphorbia lucida var. leiocarpa Tausch -- not accepted
  Euphorbia lucida var. salicifolia Wimm. & Grab. -- not accepted
  Euphorbia luciismithii B.L. Rob. & Greenm. -- accepted
  Euphorbia lucorum Rupr. -- accepted
  Euphorbia lucorum var. parvifolia H.L. Yang -- not accepted
  Euphorbia lugardiae (N.E. Br.) Bruyns -- accepted
  Euphorbia lugubris Chabert -- not accepted
  Euphorbia lukoseana S. Carter -- accepted
  Euphorbia lumbricalis L.C. Leach -- accepted
  Euphorbia lundelliana Croizat -- accepted
  Euphorbia lunulata Bunge -- accepted
  Euphorbia lupatensis N.E. Br. -- accepted
  Euphorbia lupulina Boiss. -- not accepted
  Euphorbia lurida Engelm. -- accepted -- San Francisco Mountain spurge, woodland spurge
  Euphorbia lurida var. pringlei Norton -- not accepted
  Euphorbia lusitanica Steud. -- not accepted
  Euphorbia lutea Alam. ex Boiss. -- not accepted
  Euphorbia luteola Kralik -- not accepted
  Euphorbia luteoviridis D.G. Long -- accepted
  Euphorbia lutescens C.A. Mey. -- not accepted
  Euphorbia luticola Hand.-Mazz. -- not accepted
  Euphorbia lutosa S. Carter -- accepted
  Euphorbia lutulenta (Croizat) Oudejans -- accepted
  Euphorbia lutzenbergeriana Croizat -- not accepted
  Euphorbia luzoniensis Merr. -- accepted
  Euphorbia lycia Boiss. -- not accepted
  Euphorbia lycioides Boiss. -- accepted
  Euphorbia lyciopsis Pax -- not accepted
  Euphorbia lydenburgensis Schweick. & Letty -- accepted
  Euphorbia maackii Meinsh. -- not accepted
  Euphorbia macella N.E. Br. -- not accepted
  Euphorbia macgillivrayi Boiss. -- accepted
  Euphorbia macgillivrayi var. filipes (Benth.) Domin -- not accepted
  Euphorbia macgillivrayi var. micradenia (Boiss.) Domin -- not accepted
  Euphorbia macgillivrayi var. pseudoserrulata Domin -- not accepted
  Euphorbia macgillivrayi var. typica Domin -- not accepted
  Euphorbia macgillivrayi var. yarrabensis Domin -- not accepted
  Euphorbia machrisiae Steyerm. -- accepted
  Euphorbia maconochieana B.G. Thomson -- accepted
  Euphorbia macowanii N.E. Br. -- not accepted
  Euphorbia macra Hiern -- accepted
  Euphorbia macraulonia Phil. -- accepted
  Euphorbia macrocarpa Boiss. & Buhse -- accepted
  Euphorbia macroceras Fisch. & C.A. Mey. -- accepted
  Euphorbia macroclada Boiss. -- accepted
  Euphorbia macroclada var. aceras Hand.-Mazz. -- not accepted
  Euphorbia macrophylla Pax -- accepted
  Euphorbia macropodoides B.L. Rob. & Greenm. -- accepted
  Euphorbia macropus (Klotzsch & Garcke) Boiss. -- accepted -- Huachuca Mountain spurge
  Euphorbia macrorhiza Ledeb. -- accepted
  Euphorbia macrostegia Boiss. -- not accepted
  Euphorbia macrostegia var. pauciradiata Bornm. -- not accepted
  Euphorbia maculata L. -- accepted -- milk purslane, prostrate spurge, spotted spurge, spotted sandmat
  Euphorbia maculata Lechl. ex Boiss. -- not accepted
  Euphorbia maculata var. detonsa Engelm. ex Boiss. -- not accepted
  Euphorbia maculata var. parvula Riddell -- not accepted
  Euphorbia macvaughii Carvajal & Lomelí -- accepted
  Euphorbia madagascariensis Comm. ex Lam. -- not accepted
  Euphorbia maddenii Boiss. -- accepted
  Euphorbia madinahensis Fayed & D. Al-Zahrani -- accepted -- Karath, Karathah
  Euphorbia mafingensis (Hargreaves) Bruyns -- accepted
  Euphorbia magdalenae Benth. -- accepted
  Euphorbia maglicensis Rohlena -- not accepted
  Euphorbia magnicapsula S. Carter -- accepted
  Euphorbia magnicapsula var. lacertosa S. Carter -- accepted
  Euphorbia magnicapsula var. magnicapsula S. Carter -- accepted
  Euphorbia magnidens Haw. ex Salm.-Dyck -- not accepted
  Euphorbia magnifica (E.A. Bruce) Bruyns -- accepted
  Euphorbia mahabobokensis Rauh -- accepted
  Euphorbia mahafalensis Denis -- accepted
  Euphorbia mahafalensis var. mahafalensis Denis -- accepted
  Euphorbia mahafalensis var. xanthadenia (Denis) Leandri -- accepted
  Euphorbia mainiana Poiss. -- accepted
  Euphorbia mainty Denis ex Leandri -- accepted
  Euphorbia mairei H. Lév. -- not accepted
  Euphorbia mairei var. luteociliata W.T. Wang -- not accepted
  Euphorbia major (Pax) Bruyns -- accepted
  Euphorbia makallensis S. Carter -- accepted
  Euphorbia makinoi Hayata -- accepted
  Euphorbia malaca (Small) Little -- not accepted
  Euphorbia malachophylla Clarke -- not accepted
  Euphorbia malacitana Pau -- not accepted
  Euphorbia maleevii Tamamsch. -- not accepted
  Euphorbia maleolens E. Phillips -- accepted
  Euphorbia malevola L.C. Leach -- accepted
  Euphorbia malevola ssp. bechuanica L.C. Leach -- not accepted
  Euphorbia malleata Boiss. -- accepted
  Euphorbia malurensis Rech. f. -- accepted
  Euphorbia malvana Maire -- accepted
  Euphorbia mamfwensis (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia mamillosa Lem. -- not accepted
  Euphorbia mammillaris L. -- accepted
  Euphorbia mananarensis Leandri -- accepted
  Euphorbia manca A. Nelson -- not accepted
  Euphorbia mancinella Baill. -- not accepted
  Euphorbia mandoniana Boiss. -- accepted
  Euphorbia mandravioky Leandri -- accepted
  Euphorbia mandshurica Maxim. -- accepted
  Euphorbia mangelsdorffii Rauh -- accepted
  Euphorbia mangletii Urb. -- not accepted
  Euphorbia mangokyensis Denis -- accepted
  Euphorbia mangorensis Leandri -- accepted
  Euphorbia maoershanensis F.N. Wei & J.S. Ma -- accepted
  Euphorbia marayensis Subils -- accepted
  Euphorbia maresii Knoche -- accepted
  Euphorbia maresii ssp. balearica (Willk.) Malag. -- accepted
  Euphorbia maresii ssp. maresii Knoche -- accepted
  Euphorbia margalidiana Kuhbier & Lewej. -- accepted
  Euphorbia margaretae S. Carter -- accepted
  Euphorbia marginata Pursh -- accepted -- snow on the mountain, snow-on-the-mountain, smoke-on-the-prairie, variegated spurge, whitemargined spurge
  Euphorbia marginata Kunth -- not accepted
  Euphorbia marginata var. uloleuca Engelm. & A. Gray -- not accepted
  Euphorbia marianoi Oudejans -- not accepted
  Euphorbia marie-cladieae Rzepecky -- accepted
  Euphorbia marilandica Greene -- not accepted
  Euphorbia mariolensis Rouy -- not accepted
  Euphorbia maritae Rauh -- accepted
  Euphorbia maritima Nutt. -- not accepted
  Euphorbia maritima Willd. ex Boiss. -- not accepted
  Euphorbia marlothii Pax -- not accepted
  Euphorbia marrupana Bruyns -- accepted
  Euphorbia marsabitensis S. Carter -- accepted
  Euphorbia marschalliana Boiss. -- accepted
  Euphorbia marschalliana Kotschy ex Boiss. -- not accepted
  Euphorbia marschalliana ssp. armena (Prokh.) Oudejans -- accepted
  Euphorbia marschalliana ssp. marschalliana Boiss. -- accepted
  Euphorbia martinae Rauh -- accepted
  Euphorbia martiusiana Steud. -- not accepted
  Euphorbia maryrichardsiae G. Will. -- accepted
  Euphorbia masirahensis Ghaz. -- accepted
  Euphorbia massiliensis DC. -- not accepted
  Euphorbia matabelensis Pax -- accepted
  Euphorbia matritensis Boiss. -- accepted
  Euphorbia mauritanica L. -- accepted
  Euphorbia mauritanica Webb ex J. Gay -- not accepted
  Euphorbia mayana Millsp. -- not accepted
  Euphorbia mayfieldii V.W. Steinm. -- accepted
  Euphorbia maysillesii McVaugh -- not accepted
  Euphorbia mayuranathanii Croizat -- accepted
  Euphorbia mazandaranica Pahlevani -- accepted
  Euphorbia mazarronensis Esteve -- not accepted
  Euphorbia mazatlamensis Oudejans -- not accepted
  Euphorbia mazicum Emb. & Maire -- accepted
  Euphorbia mbaluensis Pax -- not accepted
  Euphorbia mcvaughiana M.C. Johnst. -- accepted
  Euphorbia media N.E. Br. -- not accepted
  Euphorbia media var. bashawei N.E. Br. -- not accepted
  Euphorbia medicaginea Boiss. -- accepted
  Euphorbia medicaginea ssp. arsenariensis (Batt.) Batt. -- not accepted
  Euphorbia medicaginea var. arsenariensis Batt. -- not accepted
  Euphorbia medicaginea var. genuina Maire -- not accepted
  Euphorbia medicaginea var. oblongifolia Ball -- not accepted
  Euphorbia medusae Panz. -- not accepted
  Euphorbia meenae S. Carter -- accepted
  Euphorbia megalantha Boiss. -- not accepted
  Euphorbia megalantha var. denticulata Boiss. -- not accepted
  Euphorbia megalantha var. gracilis Boiss. -- not accepted
  Euphorbia megalantha var. hirtiflora Boiss. -- not accepted
  Euphorbia megalatlantica Ball -- accepted
  Euphorbia megalatlantica ssp. briquetii (Emb. & Maire) Losa & Vindt -- not accepted
  Euphorbia megalocarpa Rech. f. -- accepted
  Euphorbia meganaesos Featherman -- accepted
  Euphorbia megistopoda Diels -- not accepted
  Euphorbia mehadiensis Kit. -- not accepted
  Euphorbia melanacantha Drake -- not accepted
  Euphorbia melanadenia Torr. & A. Gray -- accepted -- prostrate spurge, red-gland spurge, squaw sandmat
  Euphorbia melanadenia var. subinappendiculata Engelm. -- not accepted
  Euphorbia melanocarpa Boiss. -- not accepted
  Euphorbia melanohydrata Nel -- accepted
  Euphorbia melanohydrata ssp. conica Swanepoel -- accepted
  Euphorbia melanohydrata ssp. melanohydrata Nel -- accepted
  Euphorbia melanosticta E. Mey. ex Boiss. -- not accepted
  Euphorbia melapetala Gasp. ex Guss. -- accepted
  Euphorbia melapetala var. leiocarpa Guss. ex Boiss. -- not accepted
  Euphorbia melillensis Sennen & Mauricio -- not accepted
  Euphorbia melitensis Parl. -- accepted
  Euphorbia mellifera Aiton -- accepted
  Euphorbia mellifera Seub. -- not accepted
  Euphorbia mellifera var. canariensis Boiss. -- not accepted
  Euphorbia meloformis Aiton -- accepted
  Euphorbia meloformis f. falsa (N.E. Br.) Marx -- not accepted
  Euphorbia meloformis f. magna R.A. Dyer ex G. Marx -- not accepted
  Euphorbia meloformis ssp. meloformis Aiton -- accepted
  Euphorbia meloformis ssp. valida (N.E. Br.) G.D. Rowley -- accepted
  Euphorbia meloniformis Lem. -- not accepted
  Euphorbia membranacea Pax -- not accepted
  Euphorbia memoralis R.A. Dyer -- accepted
  Euphorbia mendax Maire & Wilczek -- not accepted
  Euphorbia mendezii Boiss. -- accepted -- Mendez's sandmat
  Euphorbia menelikii Pax -- not accepted
  Euphorbia mercurialina Michx. -- accepted -- mercury spurge
  Euphorbia mercurialis Pers. -- not accepted
  Euphorbia meridensis Pittier -- not accepted
  Euphorbia meridionalis P.R.O. Bally & S. Carter -- accepted
  Euphorbia merkeri N.E. Br. -- not accepted
  Euphorbia mertonii Fosberg -- accepted
  Euphorbia mesembryanthemifolia Jacq. -- accepted -- Coastal beach sandmat
  Euphorbia mesembryanthemifolia f. florida (Millsp.) Oudejans -- not accepted
  Euphorbia mesembryanthemifolia f. reclinata (Millsp.) Oudejans -- not accepted
  Euphorbia mesembryanthemifolia f. seminuda (Millsp.) Oudejans -- not accepted
  Euphorbia mesembryanthemifolia var. flexuosa (Kunth) Oudejans -- not accepted
  Euphorbia mesembryanthemifolia var. ramosissima (Millsp.) Oudejans -- not accepted
  Euphorbia mesopotamica M.S. Khan -- not accepted
  Euphorbia messeniaca Heldr. ex Halácsy -- not accepted
  Euphorbia meuleniana O. Schwartz -- accepted
  Euphorbia meuselii Geltman -- not accepted
  Euphorbia mexiae Standl. -- accepted
  Euphorbia mexicana (Engelm.) Norton -- not accepted
  Euphorbia meyeniana Klotzsch -- accepted
  Euphorbia meyeniana var. viscidula Boiss. -- not accepted
  Euphorbia meyeri Boiss. -- not accepted
  Euphorbia meyeri Steud. -- not accepted
  Euphorbia meyeri Nel -- not accepted
  Euphorbia meyeriana Galushko -- not accepted
  Euphorbia micans Scheele -- not accepted
  Euphorbia michaelii Thulin -- accepted
  Euphorbia micracantha Boiss. -- accepted
  Euphorbia micractina Boiss. -- accepted
  Euphorbia micractina var. tangutica (Prokh.) W.T. Wang -- not accepted
  Euphorbia micradenia Boiss. -- not accepted
  Euphorbia micrantha Stephan ex Willd. -- not accepted
  Euphorbia microappendiculata Lotsy -- not accepted
  Euphorbia microcarpa (Prokh.) Krylov -- accepted
  Euphorbia microcephala Boiss. -- not accepted
  Euphorbia microclada Urb. -- not accepted
  Euphorbia micromera Boiss. ex Engelm. -- accepted -- Sonoran sandmat, tiny sandmat, desert spurge
  Euphorbia microphylla Lam. -- not accepted
  Euphorbia microphylla B. Heyne ex Roth -- not accepted
  Euphorbia microsciadia Boiss. -- accepted
  Euphorbia microsperma (Murb.) K. Malý -- not accepted
  Euphorbia microsphaera Boiss. -- accepted
  Euphorbia migiurtinorum Chiov. -- accepted
  Euphorbia milii Des Moul. -- accepted -- christplant
  Euphorbia milii f. lutea Leandri -- not accepted
  Euphorbia milii var. bevilaniensis (Croizat) Ursch & Leandri -- accepted
  Euphorbia milii var. bosseri Rauh -- not accepted
  Euphorbia milii var. breoni Ursch & Leandri -- not accepted
  Euphorbia milii var. hislopii (N.E. Br.) Ursch & Leandri -- accepted
  Euphorbia milii var. imperatae Ursch & Leandri -- not accepted
  Euphorbia milii var. longifolia Rauh -- accepted
  Euphorbia milii var. milii Des Moul. -- accepted
  Euphorbia milii var. roseana Marn.-Lap. ex J.-P. Demoly -- accepted
  Euphorbia milii var. splendens (Bojer ex Hook.) Ursch & Leandri -- accepted
  Euphorbia milii var. tananarivae Leandri -- not accepted
  Euphorbia milii var. tenuispina Rauh & Razaf. -- accepted
  Euphorbia milii var. tulearensis Ursch & Leandri -- accepted
  Euphorbia milii var. vulcani Leandri -- not accepted
  Euphorbia millotii Ursch & Leandri -- accepted
  Euphorbia millspaughii V.W. Steinm. & P.E. Berry -- accepted
  Euphorbia minbuensis Gage -- accepted
  Euphorbia minima (Haw.) Mart. -- not accepted
  Euphorbia minuta Loscos & Pardo -- accepted
  Euphorbia minuta Phil. -- not accepted
  Euphorbia minuta ssp. minuta Loscos & Pardo -- accepted
  Euphorbia minuta ssp. moleroi P. Monts. & Ferrández -- accepted
  Euphorbia minutiflora N.E. Br. -- not accepted
  Euphorbia minutifolia Boiss. -- not accepted
  Euphorbia minutula Boiss. -- accepted
  Euphorbia minxianensis W.T. Wang -- not accepted
  Euphorbia miricornis Maire & Wilczek -- not accepted
  Euphorbia miscella L.C. Leach -- not accepted
  Euphorbia misella S. Watson -- accepted
  Euphorbia misera Benth. -- accepted -- cliff spurge
  Euphorbia missurica Raf. -- accepted -- prairie spurge, prairie sandmat, Missouri spurge
  Euphorbia missurica var. calcicola (Shinners) Waterf. -- not accepted
  Euphorbia missurica var. intermedia (Engelm.) L.C. Wheeler -- not accepted
  Euphorbia missurica var. petaloidea (Engelm.) Dorn -- not accepted
  Euphorbia missurica var. typica L.C. Wheeler -- not accepted
  Euphorbia mitchelliana Boiss. -- accepted
  Euphorbia mitchelliana var. cairnsiana Domin -- not accepted
  Euphorbia mitchelliana var. dietrichiae Domin -- not accepted
  Euphorbia mitchelliana var. filifolia Domin -- not accepted
  Euphorbia mitchelliana var. glauca Benth. -- not accepted
  Euphorbia mitchelliana var. hirta Boiss. -- not accepted
  Euphorbia mitchelliana var. oblongifolia Boiss. -- not accepted
  Euphorbia mitchelliana var. obtusifolia Domin -- not accepted
  Euphorbia mitchelliana var. stenophylla Benth. -- not accepted
  Euphorbia mitchelliana var. typica Domin -- not accepted
  Euphorbia mitis Pax -- not accepted
  Euphorbia mitriformis P.R.O. Bally & S. Carter -- accepted
  Euphorbia mixta N.E. Br. -- not accepted
  Euphorbia mlanjeana L.C. Leach -- accepted
  Euphorbia mocinoi Oudejans -- not accepted
  Euphorbia modesta Boiss. -- not accepted
  Euphorbia moehringioides Pax -- not accepted
  Euphorbia moenchiana Steud. -- not accepted
  Euphorbia mohammerensis Boiss. -- not accepted
  Euphorbia mollis C.C. Gmel. -- not accepted
  Euphorbia momccoyae Lavranos -- accepted
  Euphorbia monacantha Pax -- accepted
  Euphorbia monadenioides M.G. Gilbert -- accepted
  Euphorbia monantha C. Wright ex Boiss. -- accepted
  Euphorbia monchiquensis Franco & P. Silva -- not accepted
  Euphorbia monensis (Millsp.) Urb. -- not accepted
  Euphorbia mongolica (Prokh.) Prokh. -- accepted
  Euphorbia monocephala Pax -- not accepted
  Euphorbia monocephala Baker ex Denis -- not accepted
  Euphorbia monocyathium (Prokh.) Prokh. -- accepted
  Euphorbia monostyla Prokh. -- accepted
  Euphorbia montana Engelm. -- not accepted
  Euphorbia montana var. gracilior Engelm. -- not accepted
  Euphorbia montana var. robusta Engelm. -- not accepted
  Euphorbia montana var. trifaris Norton -- not accepted
  Euphorbia monteiroi Hook. -- accepted
  Euphorbia monteiroi ssp. brandbergensis B. Nord. -- accepted
  Euphorbia monteiroi ssp. monteiroi Hook. -- accepted
  Euphorbia monteiroi ssp. ramosa L.C. Leach -- accepted
  Euphorbia montenegrina (Bald.) K. Malý -- accepted
  Euphorbia montereyana Millsp. -- accepted
  Euphorbia montevidensis Casar. ex Boiss. -- not accepted
  Euphorbia montevidensis Klotzsch ex Boiss. -- not accepted
  Euphorbia monticola Boiss. -- not accepted
  Euphorbia monticola Hochst. ex A. Rich. -- not accepted
  Euphorbia moratii Rauh -- accepted
  Euphorbia moratii var. antsingiensis Cremers -- accepted
  Euphorbia moratii var. bemarahensis Cremers -- accepted
  Euphorbia moratii var. moratii Rauh -- accepted
  Euphorbia moratii var. multiflora Rauh -- accepted
  Euphorbia morinii A. Berger -- not accepted
  Euphorbia morisoniana Klotzsch ex Seem. -- not accepted
  Euphorbia mosaica P.R.O. Bally & S. Carter -- accepted
  Euphorbia mosana Lej. -- not accepted
  Euphorbia mossambicensis (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia mossambicensis var. fischeri (Pax) N.E. Br. -- not accepted
  Euphorbia mossambicensis var. nyasica N.E. Br. -- not accepted
  Euphorbia mossamedensis N.E. Br. -- accepted
  Euphorbia mucronata Lam. -- not accepted
  Euphorbia mucronata Lapeyr. -- not accepted
  Euphorbia mucronata Clarke -- not accepted
  Euphorbia mucronulata (Prokh.) Pavlov -- accepted
  Euphorbia muelleri Boiss. -- accepted
  Euphorbia mulemae Rendle -- not accepted
  Euphorbia multicaulis Thuill. -- not accepted
  Euphorbia multicaulis Engelm. -- not accepted
  Euphorbia multiceps A. Berger -- accepted
  Euphorbia multiclava P.R.O. Bally & S. Carter -- accepted
  Euphorbia multiflora Willd. ex Klotzsch -- not accepted
  Euphorbia multifolia A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia multifoliosa M.E. Jones -- not accepted
  Euphorbia multiformis Gaudich. ex Hook. & Arn. -- accepted -- variable sandmat
  Euphorbia multiformis Schur -- not accepted
  Euphorbia multiformis var. celastroides A. Gray -- not accepted
  Euphorbia multiformis var. haleakalana Sherff -- not accepted
  Euphorbia multiformis var. kaalana Sherff -- not accepted
  Euphorbia multiformis var. kapuleiensis O. Deg. & Sherff -- not accepted
  Euphorbia multiformis var. lorifolia A. Gray ex H. Mann -- not accepted
  Euphorbia multiformis var. manoana Sherff -- not accepted
  Euphorbia multiformis var. microphylla Boiss. -- accepted -- variable sandmat
  Euphorbia multiformis var. mohihiensis Sherff -- not accepted
  Euphorbia multiformis var. multiformis Gaudich. ex Hook. & Arn. -- accepted -- variable sandmat
  Euphorbia multiformis var. perdita Sherff -- not accepted
  Euphorbia multiformis var. sparsiflora (A. Heller) Sherff -- not accepted
  Euphorbia multiformis var. tenuior A. Gray ex H. Mann -- not accepted
  Euphorbia multiformis var. tomentella Boiss. -- not accepted
  Euphorbia multiformis var. typica Sherff -- not accepted
  Euphorbia multifurcata Rech. f., Aellen & Esfand. -- not accepted
  Euphorbia multinodis Urb. -- accepted
  Euphorbia multiradiata Pax & K. Hoffm. -- not accepted
  Euphorbia multiramosa Nel -- not accepted
  Euphorbia multiseta Benth. -- accepted
  Euphorbia mundii N.E. Br. -- accepted
  Euphorbia munizii Borhidi -- accepted
  Euphorbia muraltioides N.E. Br. -- accepted
  Euphorbia muricata Thunb. -- accepted
  Euphorbia muricata M. Bieb. -- not accepted
  Euphorbia muricata var. wilhelmsiana K. Koch -- not accepted
  Euphorbia murielii N.E. Br. -- not accepted
  Euphorbia murrayana J.M. Black -- not accepted
  Euphorbia muscicola Fernald -- accepted
  Euphorbia muscosa Ten. -- not accepted
  Euphorbia mwinilungensis L.C. Leach -- accepted
  Euphorbia myrioclada S. Carter -- accepted
  Euphorbia myrsinites L. -- accepted -- myrtle spurge, donkey tail, blue spurge, creeping spurge
  Euphorbia myrsinites Pall. ex Ledeb. -- not accepted
  Euphorbia myrsinites ssp. litardierei Font Quer & Garcias Font -- not accepted
  Euphorbia myrsinites ssp. pontica (Prokh.) R. Turner -- not accepted
  Euphorbia myrsinites ssp. rechingeri (Greuter) Aldén -- not accepted
  Euphorbia myrtifolia (L.) Lam. -- not accepted
  Euphorbia myrtillifolia L. -- accepted
  Euphorbia myrtilloides Schltdl. ex Klotzsch & Garcke -- not accepted
  Euphorbia myrtoides Boiss. -- not accepted
  Euphorbia nagleri (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia nagleri var. baliensis Boiss. -- not accepted
  Euphorbia nakaiana H. Lév. -- not accepted
  Euphorbia nakaii Hurus. -- accepted
  Euphorbia namaquensis N.E. Br. -- accepted
  Euphorbia namibensis Marloth -- accepted
  Euphorbia namuliensis Bruyns -- accepted
  Euphorbia namuskluftensis L.C. Leach -- accepted
  Euphorbia nana Royle -- accepted
  Euphorbia nana Klotzsch ex Boiss. -- not accepted
  Euphorbia napoides Pax -- accepted
  Euphorbia natalensis Bernh. ex Krauss -- accepted
  Euphorbia nayarensis V.W. Steinm. -- accepted
  Euphorbia ndurumensis P.R.O. Bally -- not accepted
  Euphorbia nealleyi J.M. Coult. & Fisher -- not accepted
  Euphorbia neapolitana Ten. -- not accepted
  Euphorbia nebrownii Merr. -- not accepted
  Euphorbia neglecta N.E. Br. -- not accepted
  Euphorbia negromontana N.E. Br. -- accepted
  Euphorbia neilmulleri M.C. Johnst. -- accepted
  Euphorbia nelii A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia nelsii Pax -- not accepted
  Euphorbia nelsonii Millsp. -- not accepted
  Euphorbia nematocypha Hand.-Mazz. -- not accepted
  Euphorbia nematocypha var. induta Hand.-Mazz. -- not accepted
  Euphorbia nemoralis Salisb. -- not accepted
  Euphorbia nemoralis Kit. -- not accepted
  Euphorbia nemoralis Darl. -- not accepted
  Euphorbia nenensis Hiern -- not accepted
  Euphorbia neoangolensis Bruyns -- accepted
  Euphorbia neoarborescens Bruyns -- accepted
  Euphorbia neobosseri (Rauh) Rauh -- accepted
  Euphorbia neobosseri var. itampolensis Rauh -- accepted
  Euphorbia neobosseri var. neobosseri (Rauh) Rauh -- accepted
  Euphorbia neocaledonica Boiss. -- accepted
  Euphorbia neocapitata Bruyns -- accepted
  Euphorbia neochamaeclada Bruyns -- accepted
  Euphorbia neococcinea Bruyns -- accepted
  Euphorbia neocrispa Bruyns -- accepted
  Euphorbia neocymosa Bruyns -- accepted
  Euphorbia neoerubescens Bruyns -- not accepted
  Euphorbia neogillettii Bruyns -- accepted
  Euphorbia neoglabrata Bruyns -- accepted
  Euphorbia neoglaucescens Bruyns -- accepted
  Euphorbia neogoetzei Bruyns -- accepted
  Euphorbia neogossweileri Bruyns -- accepted
  Euphorbia neogracilis Bruyns -- accepted
  Euphorbia neohalipedicola Bruyns -- accepted
  Euphorbia neohumbertii Boiteau -- accepted
  Euphorbia neohumbertii var. aureoviridiflora Rauh -- not accepted
  Euphorbia neokaessneri Bruyns -- accepted
  Euphorbia neomexicana Greene -- not accepted
  Euphorbia neomontana Bruyns -- accepted
  Euphorbia neoparviflora Bruyns -- accepted
  Euphorbia neopedunculata Bruyns -- accepted
  Euphorbia neopolycnemoides Pax & K. Hoffm. -- accepted
  Euphorbia neoreflexa Bruyns -- accepted
  Euphorbia neorubella Bruyns -- accepted
  Euphorbia neorugosa Bruyns -- accepted
  Euphorbia neospinescens Bruyns -- accepted
  Euphorbia neostapelioides Bruyns -- not accepted
  Euphorbia neostapelioides var. congesta Bruyns -- not accepted
  Euphorbia neostolonifera Bruyns -- accepted
  Euphorbia neovirgata Bruyns -- accepted
  Euphorbia neovolkensii Pax -- not accepted
  Euphorbia nepalensis Boiss. -- not accepted
  Euphorbia nephradenia Barneby -- accepted -- Paria spurge, Utah spurge
  Euphorbia nereidum Jahand. & Maire -- accepted
  Euphorbia neriifolia L. -- accepted -- Indian spurgetree
  Euphorbia neriifolia Roxb. -- not accepted
  Euphorbia nervosa Kit. -- not accepted
  Euphorbia nesemannii R.A. Dyer -- accepted
  Euphorbia nesiotica B.L. Rob. -- not accepted
  Euphorbia nesomii Mayfield -- accepted
  Euphorbia neutra A. Berger -- not accepted
  Euphorbia nevadensis Boiss. & Reut. -- accepted
  Euphorbia nevadensis ssp. aragonensis (Loscos & Pardo) O. Bolòs & Vigo -- accepted
  Euphorbia nevadensis ssp. bolosii Molero & Rovira -- accepted
  Euphorbia nevadensis ssp. nevadensis Boiss. & Reut. -- accepted
  Euphorbia nevadensis var. acutifolia (Lange) O. Bolòs & Vigo -- not accepted
  Euphorbia nevadensis var. aragonensis (Loscos & Pardo) O. Bolòs & Vigo -- not accepted
  Euphorbia nevadensis var. carpetana Pau ex Losa -- not accepted
  Euphorbia nevadensis var. granatensis Ladero & Valdés Berm. -- not accepted
  Euphorbia nicaeensis All. -- accepted
  Euphorbia nicaeensis f. latibracteata (Prodán) Kuzmanov -- not accepted
  Euphorbia nicaeensis f. varnensis (Velen.) Kuzmanov -- not accepted
  Euphorbia nicaeensis ssp. cadrilateri (Prodán) Kuzmanov -- accepted
  Euphorbia nicaeensis ssp. demnatensis (Coss. ex Batt. & Trab.) Breistr. -- accepted
  Euphorbia nicaeensis ssp. dobrogensis (Prodán) Kuzmanov -- accepted
  Euphorbia nicaeensis ssp. goldei (Prokh.) Greuter & Burdet -- accepted
  Euphorbia nicaeensis ssp. hispanica Degen & Hervier -- not accepted
  Euphorbia nicaeensis ssp. japygica (Ten.) Arcang. -- not accepted
  Euphorbia nicaeensis ssp. maleevii (Tamamsch.) Oudejans -- not accepted
  Euphorbia nicaeensis ssp. nicaeensis All. -- accepted
  Euphorbia nicaeensis ssp. prostrata (Fiori) Arrigoni -- not accepted
  Euphorbia nicaeensis ssp. stepposa (Zoz) Greuter & Burdet -- not accepted
  Euphorbia nicaeensis ssp. volgensis (Krysht.) Oudejans -- accepted
  Euphorbia nicaeensis var. hispanica (Degen & Hervier) Cuatrec. -- accepted
  Euphorbia nicaeensis var. japygica (Ten.) Nyman -- not accepted
  Euphorbia nicaeensis var. lasiocarpa (Boiss.) Radcl.-Sm. & Govaerts -- accepted
  Euphorbia nicholasii Oudejans -- accepted
  Euphorbia niciciana Borbás ex Novák -- accepted
  Euphorbia nigrispina N.E. Br. -- accepted
  Euphorbia nigrispinoides M.G. Gilbert -- accepted
  Euphorbia nilagirica Miq. -- not accepted
  Euphorbia nipensis Carabia -- not accepted
  Euphorbia niqueroana Urb. -- not accepted
  Euphorbia nirurioides (Millsp.) Fawc. & Rendle -- not accepted
  Euphorbia nitens Trevir. -- not accepted
  Euphorbia nivulia Buch.-Ham. -- accepted
  Euphorbia nivulia var. helicothele (Lem.) Boiss. -- not accepted
  Euphorbia nocens (L.C. Wheeler) V.W. Steinm. -- accepted
  Euphorbia nodiflora Steud. -- not accepted
  Euphorbia nodosa Houtt. -- accepted
  Euphorbia nodosa N.E. Br. -- not accepted
  Euphorbia noeana Boiss. -- not accepted
  Euphorbia nogalensis (A. Hässl.) S. Carter -- accepted
  Euphorbia norfolkiana Boiss. -- accepted
  Euphorbia normannii Schmalh. ex Lipsky -- accepted
  Euphorbia nortoniana A. Nelson -- not accepted
  Euphorbia notadenia Boiss. & Hohen. -- not accepted
  Euphorbia notata Engelm. ex Boiss. -- not accepted
  Euphorbia notoptera Boiss. -- accepted
  Euphorbia novomexicana (Klotzsch & Garcke) L.C. Wheeler -- not accepted
  Euphorbia noxia Pax -- accepted
  Euphorbia nubica N.E. Br. -- accepted
  Euphorbia nubigena L.C. Leach -- accepted
  Euphorbia nubigena var. nubigena L.C. Leach -- accepted
  Euphorbia nubigena var. rutilans L.C. Leach -- accepted
  Euphorbia nuda (Velen.) Velen. -- not accepted
  Euphorbia nuda Lam. ex Pers. -- not accepted
  Euphorbia nudicaulis Chapm. -- not accepted -- Chapman's spurge
  Euphorbia nudiflora Lam. -- not accepted
  Euphorbia nudiflora Jacq. -- not accepted
  Euphorbia nummularia Hook. f. -- accepted
  Euphorbia nummularia var. glabra B.L. Rob. & Greenm. -- not accepted
  Euphorbia nummulariifolia Willd. -- not accepted
  Euphorbia nurae P. Fraga & Rossello -- accepted
  Euphorbia nutans Lag. -- accepted -- eyebane, upright spotted spurge, nodding spurge
  Euphorbia nutans var. glaberrima Thell. -- not accepted
  Euphorbia nuttallii (Engelm.) Small -- not accepted
  Euphorbia nyassae Pax -- accepted
  Euphorbia nyassae ssp. mentiens S. Carter -- not accepted
  Euphorbia nyikae Pax ex Engl. -- accepted
  Euphorbia nyikae var. neovolkensii (Pax) S. Carter -- accepted
  Euphorbia nyikae var. nyikae Pax ex Engl. -- accepted
  Euphorbia oahuensis Skottsb. -- not accepted
  Euphorbia oatesii Rolfe -- accepted
  Euphorbia oaxacana B.L. Rob. & Greenm. -- accepted
  Euphorbia obconica Bojer ex N.E. Br. -- accepted
  Euphorbia obcordata Balf. f. -- accepted
  Euphorbia obcordata Denis -- not accepted
  Euphorbia obesa Hook. f. -- accepted
  Euphorbia obesa ssp. obesa Hook. f. -- accepted
  Euphorbia obesa ssp. symmetrica (A.C. White, R.A. Dyer & B. Sloane) G.D. Rowley -- accepted
  Euphorbia obliqua F.A. Bauer ex Endl. -- accepted
  Euphorbia obliqua var. phyllanthoides (Boiss.) Boiss. -- not accepted
  Euphorbia obliquata Forssk. -- not accepted
  Euphorbia obliquifolia Kunze ex Boiss. -- not accepted
  Euphorbia obliterata Jacq. -- not accepted
  Euphorbia oblongata Griseb. -- accepted -- eggleaf spurge, oblong spurge, egg-leaf spurge
  Euphorbia oblongata ssp. sessiliflora (Boiss.) Nyman -- not accepted
  Euphorbia oblongata var. oblongata Griseb. -- accepted
  Euphorbia oblongata var. sessiliflora Boiss. -- accepted
  Euphorbia oblongicaulis Baker -- not accepted
  Euphorbia oblongifolia (K. Koch) K. Koch -- accepted
  Euphorbia obovalifolia A. Rich. -- not accepted
  Euphorbia obovata Decne. -- accepted
  Euphorbia obscura Loisel. -- not accepted
  Euphorbia obscura Láng ex Rchb. -- not accepted
  Euphorbia obtusata Pursh -- not accepted
  Euphorbia obtusifolia Lam. -- not accepted
  Euphorbia obtusifolia Poir. -- not accepted
  Euphorbia obtusifolia f. barbaricensis Pedro -- not accepted
  Euphorbia obtusifolia f. latibracteata G. Kunkel -- not accepted
  Euphorbia obtusifolia f. sesimbrensis Pedro -- not accepted
  Euphorbia obtusifolia ssp. regis-jubae (Webb & Berthel.) Maire -- not accepted
  Euphorbia obtusifolia var. despoliata Menezes -- not accepted
  Euphorbia obtusifolia var. wildpretii Molero & Rovira -- not accepted
  Euphorbia occidentalis Drew -- not accepted
  Euphorbia occidentaustralica Radcl.-Sm. & Govaerts -- accepted
  Euphorbia occulta Klotzsch -- not accepted
  Euphorbia ocellata Durand & Hilg. -- accepted -- Contura Creek sandmat
  Euphorbia ocellata ssp. arenicola (Parish) Oudejans -- accepted -- Contura Creek sandmat, Yellow-flowered sandmat
  Euphorbia ocellata ssp. ocellata Durand & Hilg. -- accepted -- Contura Creek sandmat
  Euphorbia ocellata ssp. rattanii (S. Watson) Oudejans -- accepted -- Rattan's sandmat
  Euphorbia ocellata var. arenicola (Parish) Jeps. -- not accepted
  Euphorbia ocellata var. rattanii (S. Watson) L.C. Wheeler -- not accepted
  Euphorbia ocellata var. sulfurea (Millsp.) Jeps. -- not accepted
  Euphorbia ocellata var. typica L.C. Wheeler -- not accepted
  Euphorbia octoradiata H. Lév. & Vaniot -- accepted
  Euphorbia ocymoidea L. -- accepted
  Euphorbia ocymoidea var. barnesii (Millsp.) McVaugh -- not accepted
  Euphorbia ocymoidea var. subreniformis (S. Watson) McVaugh -- not accepted
  Euphorbia odontadenia Boiss. -- not accepted -- Segi Canyon spurge
  Euphorbia odontophora S. Carter -- accepted
  Euphorbia odontophylla Willd. -- not accepted
  Euphorbia odontophylla Boiss. -- not accepted
  Euphorbia oerstediana (Klotzsch & Garcke) Boiss. -- accepted -- West Indian spurge
  Euphorbia officinarum L. -- accepted
  Euphorbia officinarum Hochst. ex Boiss. -- not accepted
  Euphorbia officinarum ssp. beaumieriana (Hook. f. & Coss.) Vindt -- accepted
  Euphorbia officinarum ssp. echinus (Hook. f. & Coss.) Vindt -- accepted
  Euphorbia officinarum ssp. officinarum L. -- accepted
  Euphorbia officinarum var. beaumieriana (Hook. f. & Coss.) Maire -- not accepted
  Euphorbia officinarum var. genuina Maire -- not accepted
  Euphorbia officinarum var. hernandez-pachecoi (Caball.) Oudejans -- not accepted
  Euphorbia officinarum var. kolquall Willd. -- not accepted
  Euphorbia ogadenensis P.R.O. Bally & S. Carter -- accepted
  Euphorbia ohiotica Steud. & Hochst. ex Boiss. -- not accepted
  Euphorbia oidorrhiza Pojark. -- accepted
  Euphorbia oleifolia Pourr. -- not accepted
  Euphorbia oleifolia Gouan -- not accepted
  Euphorbia oleracea Pers. -- not accepted
  Euphorbia oligantha Boiss. -- not accepted
  Euphorbia oligoclada L.C. Leach -- accepted
  Euphorbia olivacea Small -- not accepted
  Euphorbia olowaluana Sherff -- accepted -- alpine sandmat
  Euphorbia olowaluana var. gracilis (Rock) Sherff -- not accepted
  Euphorbia olowaluana var. lepidofolia O. Deg. & Sherff -- not accepted
  Euphorbia olowaluana var. typica Sherff -- not accepted
  Euphorbia omariana M.G. Gilbert -- accepted
  Euphorbia oncoclada Drake -- not accepted
  Euphorbia onoi Franch. & Sav. -- not accepted
  Euphorbia opaca Láng ex Rchb. -- not accepted
  Euphorbia ophiolitica (P.I. Forst.) Y. Yang -- accepted
  Euphorbia ophthalmica Pers. -- accepted -- Florida hammock sandmat
  Euphorbia oppositifolia McVaugh -- accepted
  Euphorbia opuntioides Welw. ex Hiern -- accepted
  Euphorbia orabensis Dinter -- not accepted
  Euphorbia oranensis (Croizat) Subils -- accepted
  Euphorbia oraria F. Muell. ex Boiss. -- not accepted
  Euphorbia orbiculata Kunth -- accepted
  Euphorbia orbiculata Miq. -- not accepted
  Euphorbia orbiculata var. jawaharii Rajagopal & Panigrahi -- not accepted
  Euphorbia orbiculifolia S. Carter -- accepted
  Euphorbia orbifolia (Alain) Oudejans -- accepted -- Mona Island sandmat
  Euphorbia oreophila Miq. -- not accepted
  Euphorbia oreophila var. pubescens Boiss. -- not accepted
  Euphorbia oreophila var. wightiana (Boiss.) Boiss. -- not accepted
  Euphorbia orientalis L. -- accepted
  Euphorbia orientalis (Boiss.) Velen. -- not accepted
  Euphorbia origanoides L. -- accepted
  Euphorbia orizabae Boiss. -- accepted
  Euphorbia orjeni Beck -- accepted
  Euphorbia ornata Stapf -- not accepted
  Euphorbia orobanchoides (P.R.O. Bally) Bruyns -- accepted
  Euphorbia orobanchoides var. calycina (P.R.O. Bally) Bruyns -- accepted
  Euphorbia orobanchoides var. orobanchoides (P.R.O. Bally) Bruyns -- accepted
  Euphorbia orphanidis Boiss. -- accepted
  Euphorbia orthoclada Baker -- accepted
  Euphorbia oschtenica Galushko -- not accepted
  Euphorbia osyridea Boiss. -- accepted
  Euphorbia osyridiformis Parsa -- accepted
  Euphorbia otjingandu Swanepoel -- accepted
  Euphorbia otjipembana L.C. Leach -- accepted
  Euphorbia ouachitana Mayfield -- accepted
  Euphorbia ovalifolia Kostel. -- not accepted
  Euphorbia ovalifolia (Engelm. ex Klotzsch) Boiss. -- not accepted
  Euphorbia ovalifolia var. argentina Müll. Arg. ex Griseb. -- not accepted
  Euphorbia ovalifolia var. dentata R.E. Fr. -- not accepted
  Euphorbia ovalifolia var. montevidensis Boiss. -- not accepted
  Euphorbia ovalifolia var. schizosepala Engelm. ex Boiss. -- not accepted
  Euphorbia ovalleana Phil. -- accepted
  Euphorbia ovata (E. Mey. ex Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia ovata Larrañaga -- not accepted
  Euphorbia oxycoccoides Boiss. -- accepted
  Euphorbia oxyodonta Boiss. -- accepted
  Euphorbia oxyphylla Boiss. -- accepted
  Euphorbia oxystegia Boiss. -- accepted
  Euphorbia pachyceras Coss. ex Lacaita -- not accepted
  Euphorbia pachyclada S. Carter -- accepted
  Euphorbia pachypoda Urb. -- not accepted
  Euphorbia pachypodioides Boiteau -- accepted
  Euphorbia pachyrrhiza Kar. & Kir. -- accepted
  Euphorbia pachysantha Baill. -- accepted
  Euphorbia padifolia (L.) Guss. -- not accepted
  Euphorbia padifolia Brandegee -- not accepted
  Euphorbia paganorum A. Chev. -- accepted
  Euphorbia palatinata F. Zimmerm. ex Thell. & F. Zimmerm. -- not accepted
  Euphorbia pallasiana Turcz. ex Fisch. & E.H. Mey. -- not accepted
  Euphorbia pallasii Turcz. -- not accepted
  Euphorbia pallasii f. glaberrima (Maxim.) Kitag. -- not accepted
  Euphorbia pallasii var. glaberrima Maxim. -- not accepted
  Euphorbia pallasii var. komaroviana (Prokh.) Y.C. Zhu -- not accepted
  Euphorbia pallasii var. pilosa Regel -- not accepted
  Euphorbia pallens Dillwyn -- not accepted
  Euphorbia pallida Willd. -- not accepted
  Euphorbia palmeri Engelm. ex S. Watson -- not accepted -- wood spurge, woodland spurge
  Euphorbia palmeri var. peplofolia Norton -- not accepted
  Euphorbia palmeri var. subpubens (Engelm. ex S. Watson) L.C. Wheeler -- not accepted -- woodland spurge
  Euphorbia palmyrena Mouterde -- not accepted
  Euphorbia paludicola McVaugh -- not accepted
  Euphorbia paludosa Rouy -- not accepted
  Euphorbia palustris L. -- accepted -- marsh spurge
  Euphorbia palustris var. brinonense Cezard -- not accepted
  Euphorbia pamirica (Prokh.) Prokh. -- accepted
  Euphorbia pampeana Speg. -- accepted
  Euphorbia panacea Webb & Berthel. -- not accepted
  Euphorbia pancheri Baill. -- accepted
  Euphorbia pancicii Beck -- accepted
  Euphorbia pandurata Huber -- not accepted
  Euphorbia pandurifolia Roth -- not accepted
  Euphorbia paniculata Elliott -- not accepted
  Euphorbia paniculata Desf. -- accepted
  Euphorbia paniculata ssp. monchiquensis (Franco & P. Silva) Vicens, Molero & C. Blanché -- accepted
  Euphorbia paniculata ssp. paniculata Desf. -- accepted
  Euphorbia paniculata ssp. welwitschii (Boiss. & Reut.) Vicens, Molero & C. Blanché -- accepted
  Euphorbia panjutinii Grossh. -- accepted
  Euphorbia pannonica Host -- accepted
  Euphorbia pannonica f. kitaibelii Soó -- not accepted
  Euphorbia pantomalaca Standl. & Steyerm. -- not accepted
  Euphorbia papilionum S. Carter -- accepted
  Euphorbia papillaris (Boiss.) Raffaelli & Ricceri -- accepted
  Euphorbia papilligera Boiss. -- not accepted
  Euphorbia papillosa A. St.-Hil. -- accepted
  Euphorbia papillosa Pouzolz ex Gren. & Godr. -- not accepted
  Euphorbia papillosa var. cabrerae Subils -- not accepted
  Euphorbia papillosa var. erythrorrhiza (Klotzsch & Garcke) Subils -- not accepted
  Euphorbia papillosa var. minor A. St.-Hil. -- not accepted
  Euphorbia papillosicapsa L.C. Leach -- accepted
  Euphorbia paralias L. -- accepted -- sea spurge
  Euphorbia paranensis Dusén -- accepted
  Euphorbia parannaquensis Blanco -- not accepted
  Euphorbia parasitica Pav. ex Boiss. -- not accepted
  Euphorbia parciflora Urb. -- accepted
  Euphorbia parciramulosa Schweinf. -- accepted
  Euphorbia paredonensis (Millsp.) Oudejans -- accepted
  Euphorbia parifolia N.E. Br. -- accepted
  Euphorbia parishii Greene -- accepted -- Parish's sandmat
  Euphorbia parkeri Binojk. & N.P. Balakr. -- accepted
  Euphorbia parodii Oudejans -- accepted
  Euphorbia parryi Engelm. -- accepted -- Parry's sandmat, dune spurge
  Euphorbia parva N.E. Br. -- accepted
  Euphorbia parvicaruncula D.C. Hassall -- accepted
  Euphorbia parviceps L.C. Leach -- accepted
  Euphorbia parvicyathophora Rauh -- accepted
  Euphorbia parviflora L. -- accepted
  Euphorbia parvifolia E. Mey. ex Boiss. -- not accepted
  Euphorbia parvifolia var. laxa Boiss. -- not accepted
  Euphorbia parvimamma Boiss. -- not accepted
  Euphorbia parvula Delile -- not accepted
  Euphorbia parvula K. Koch -- not accepted
  Euphorbia passa N.E. Br. -- not accepted
  Euphorbia patagonica Hieron. -- not accepted
  Euphorbia patellifera J.T. Howell -- not accepted
  Euphorbia patens Kit. -- not accepted
  Euphorbia patentispina S. Carter -- accepted
  Euphorbia patula Mill. -- accepted
  Euphorbia pauciflora Nutt. ex Seem. -- not accepted
  Euphorbia pauciflora Dufour -- not accepted
  Euphorbia paucifolia Klotzsch -- not accepted
  Euphorbia paucipila Urb. -- not accepted
  Euphorbia pauciradiata Blatt. -- accepted
  Euphorbia paui Lacaita ex Losa -- not accepted
  Euphorbia paulianii Ursch & Leandri -- accepted
  Euphorbia paxiana Dinter -- not accepted
  Euphorbia pearsonii N.E. Br. -- not accepted
  Euphorbia pectinata Albov -- not accepted
  Euphorbia pedemontana L.C. Leach -- accepted
  Euphorbia pedersenii Subils -- accepted
  Euphorbia pediculifera Engelm. -- accepted -- Carrizo Mountain sandmat
  Euphorbia pediculifera var. abramsiana (L.C. Wheeler) Ewan -- not accepted
  Euphorbia pediculifera var. inornata Brandegee -- not accepted
  Euphorbia pediculifera var. involuta (Millsp.) I.M. Johnst. -- not accepted
  Euphorbia pediculifera var. linearifolia S. Watson -- accepted
  Euphorbia pediculifera var. minor Millsp. -- not accepted
  Euphorbia pediculifera var. pediculifera Engelm. -- accepted
  Euphorbia pediculifera var. typica L.C. Wheeler -- not accepted
  Euphorbia pedilanthoides Denis -- accepted
  Euphorbia pedroi Molero & Rovira -- accepted
  Euphorbia pedunculata Klotzsch ex Jabl. -- not accepted
  Euphorbia pedunculosa A. Rich. -- not accepted
  Euphorbia peganoides Boiss. -- not accepted
  Euphorbia pekinensis Rupr. -- accepted
  Euphorbia pekinensis f. denudata (Hurus.) Oudejans -- not accepted
  Euphorbia pekinensis f. sinanensis Hurus. -- not accepted
  Euphorbia pekinensis ssp. asoensis Kuros. & Ohashi -- accepted
  Euphorbia pekinensis ssp. fauriei (H. Lév. & Vaniot) Kuros. & Ohashi -- not accepted
  Euphorbia pekinensis ssp. pekinensis Rupr. -- accepted
  Euphorbia pekinensis var. acuminata Hurus. -- not accepted
  Euphorbia pekinensis var. hupehensis Hurus. -- not accepted
  Euphorbia pekinensis var. ibukiensis Hurus. -- not accepted
  Euphorbia pekinensis var. japonensis Makino -- not accepted
  Euphorbia pekinensis var. lasiocaula (Boiss.) Oudejans -- not accepted
  Euphorbia pekinensis var. onoi (Franch. & Sav.) Makino -- not accepted
  Euphorbia pekinensis var. pseudolucorum (Hurus.) Oudejans -- not accepted
  Euphorbia pekinensis var. sinanensis (Hurus.) Oudejans -- not accepted
  Euphorbia pekinensis var. subulatifolius (Hurus.) T.B. Lee -- not accepted
  Euphorbia pekinensis var. watanabei (Makino) Oudejans -- not accepted
  Euphorbia pellegrinii Leandri -- accepted
  Euphorbia peltata Roxb. -- accepted
  Euphorbia peltata Sessé & Moç. -- not accepted
  Euphorbia peltigera E. Mey. ex Boiss. -- not accepted
  Euphorbia penicillata (Millsp.) R.E. Schult. -- not accepted
  Euphorbia peninsularis I.M. Johnst. -- accepted
  Euphorbia pentadactyla Griseb. -- accepted
  Euphorbia pentagona Haw. -- accepted
  Euphorbia pentagona Royle -- not accepted
  Euphorbia pentagona Blanco -- not accepted
  Euphorbia pentagona Noronha -- not accepted
  Euphorbia pentlandii Boiss. -- accepted
  Euphorbia pentops Marloth ex A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia peperomioides Boiss. -- accepted
  Euphorbia peplidion Engelm. -- accepted -- low spurge
  Euphorbia peplis L. -- accepted
  Euphorbia peplofolia Engelm. ex Patt. -- not accepted
  Euphorbia peploides Gouan -- not accepted
  Euphorbia peploides Nutt. -- not accepted
  Euphorbia peplus var. maritima Boiss. -- not accepted
  Euphorbia peplus var. minima DC. -- accepted
  Euphorbia peplus var. minor Willd. -- not accepted
  Euphorbia peplus var. peploides (Gouan) Vis. -- not accepted
  Euphorbia peplus var. peplus L. -- accepted
  Euphorbia perangusta R.A. Dyer -- accepted
  Euphorbia perangustifolia S. Carter -- accepted
  Euphorbia perarmata S. Carter -- accepted
  Euphorbia perbracteata Gage -- accepted
  Euphorbia perennans (Shinners) Warnock & M.C. Johnst. -- accepted -- perennial sandmat, Terlingua spurge
  Euphorbia pereskiifolia Houllet ex Baill. -- accepted
  Euphorbia perfoliata Scheutz -- accepted
  Euphorbia perforata Guss. -- not accepted
  Euphorbia perforata Tineo ex Lojac. -- not accepted
  Euphorbia pergamena Small -- accepted -- Southern Florida sandmat, rocklands spurge
  Euphorbia pergracilis P.G. Mey. -- accepted
  Euphorbia peritropoides (Millsp.) V.W. Steinm. -- accepted
  Euphorbia perlignea McVaugh -- accepted
  Euphorbia perpera N.E. Br. -- accepted
  Euphorbia perplexa L.C. Leach -- accepted
  Euphorbia perplexa var. kasamana L.C. Leach -- accepted
  Euphorbia perplexa var. perplexa L.C. Leach -- accepted
  Euphorbia perrieri Drake -- accepted
  Euphorbia perrieri var. elongata Denis -- accepted
  Euphorbia perrieri var. perrieri Drake -- accepted
  Euphorbia perrottetii Jaub. & Spach -- not accepted
  Euphorbia persepolitana Boiss. -- not accepted
  Euphorbia persica Steven ex Boiss. -- not accepted
  Euphorbia persica C.A. Mey. ex Boiss. -- not accepted
  Euphorbia persistens R.A. Dyer -- not accepted
  Euphorbia persistentifolia L.C. Leach -- accepted
  Euphorbia personata (Croizat) V.W. Steinm. -- accepted
  Euphorbia peruviana L.C. Wheeler -- accepted
  Euphorbia pervilleana Baill. -- accepted
  Euphorbia pervittata S. Carter -- accepted
  Euphorbia pestalozzae Boiss. -- accepted
  Euphorbia petala Ewart & L.R. Kerr -- not accepted
  Euphorbia petaloidea Engelm. -- not accepted
  Euphorbia petaloidea var. flagelliformis Engelm. -- not accepted
  Euphorbia petaloidea var. intermedia Engelm. -- not accepted
  Euphorbia petaloidea var. nicolletii Engelm. -- not accepted
  Euphorbia petaloidea var. nuttallii Engelm. -- not accepted
  Euphorbia petaloides G. Don -- not accepted
  Euphorbia petiolaris Sims -- accepted -- manchineel berry
  Euphorbia petiolata Banks & Sol. -- accepted
  Euphorbia petiolata var. petiolata Banks & Sol. -- accepted
  Euphorbia petiolata var. postii (Boiss.) Radcl.-Sm. -- accepted
  Euphorbia petitiana A. Rich. -- accepted
  Euphorbia petraea S. Carter -- accepted
  Euphorbia petricola P.R.O. Bally & S. Carter -- accepted
  Euphorbia petrina S. Watson -- accepted
  Euphorbia petrophila C.A. Mey. -- accepted
  Euphorbia petrophila var. armena Boiss. -- not accepted
  Euphorbia petrophila var. colchica Litv. -- not accepted
  Euphorbia phanerophlebias Baker ex Denis -- not accepted
  Euphorbia philippiana (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia philippina J. Gay ex Boiss. -- not accepted
  Euphorbia phillipsiae N.E. Br. -- accepted
  Euphorbia phillipsioides S. Carter -- accepted
  Euphorbia philora (Cockerell) Tidestr. -- not accepted
  Euphorbia phlomos Candargy -- not accepted
  Euphorbia phosphorea Mart. -- accepted
  Euphorbia phyllanthoides Boiss. -- not accepted
  Euphorbia phylloclada Boiss. -- accepted
  Euphorbia phymatoclada Boiss. -- not accepted
  Euphorbia phymatosperma Boiss. & Gaill. -- accepted
  Euphorbia phymatosperma ssp. cernua (Coss. & Durieu ex Boiss.) Vindt -- accepted
  Euphorbia phymatosperma ssp. phymatosperma Boiss. & Gaill. -- accepted
  Euphorbia physalifolia Boiss. -- not accepted
  Euphorbia physocaulos Mouterde -- accepted
  Euphorbia physoclada Boiss. -- accepted
  Euphorbia picachensis Brandegee -- accepted
  Euphorbia piceoides Thulin -- accepted
  Euphorbia picta Jacq. -- not accepted
  Euphorbia pileoides Millsp. -- not accepted
  Euphorbia pillansii N.E. Br. -- accepted
  Euphorbia pilosa L. -- accepted
  Euphorbia pilosa Pursh -- not accepted
  Euphorbia pilosa ssp. ojensis Stepanov -- not accepted
  Euphorbia pilosa ssp. villosa (Waldst. & Kit. ex Willd.) Nyman -- not accepted
  Euphorbia pilosa var. austriaca (A. Kern.) Nyman -- not accepted
  Euphorbia pilosa var. illirica (Lam.) Nyman -- not accepted
  Euphorbia pilosa var. longifolia Rouy -- not accepted
  Euphorbia pilosa var. procera (M. Bieb.) Nyman -- not accepted
  Euphorbia pilosa var. reichenbachiana (Willk.) Boiss. -- not accepted
  Euphorbia pilosa var. trigonocarpa (Fisch.) Boiss. -- not accepted
  Euphorbia pilosa var. villosa (Waldst. & Kit. ex Willd.) Nyman -- not accepted
  Euphorbia pilosissima S. Carter -- accepted
  Euphorbia pilosula Engelm. ex Boiss. -- not accepted
  Euphorbia pilulifera L. -- not accepted
  Euphorbia pilulifera f. humifusa Domin -- not accepted
  Euphorbia pilulifera f. rubromaculata Domin -- not accepted
  Euphorbia pilulifera f. viridis Domin -- not accepted
  Euphorbia pilulifera var. arechavaletae Herter -- not accepted
  Euphorbia pilulifera var. discolor Engelm. -- not accepted
  Euphorbia pilulifera var. glabrescens Thell. -- not accepted
  Euphorbia pilulifera var. guaranitica Chodat & Hassl. -- not accepted
  Euphorbia pilulifera var. hirta (L.) Thell. -- not accepted
  Euphorbia pilulifera var. obliterata (Jacq.) Hitchc. -- not accepted
  Euphorbia pilulifera var. procumbens Boiss. -- not accepted
  Euphorbia pimeleodendron Pax -- not accepted
  Euphorbia pinariona Urb. -- not accepted
  Euphorbia pindicola Hausskn. -- not accepted
  Euphorbia pinea L. -- not accepted
  Euphorbia pinea ssp. celerieri Emb. -- not accepted
  Euphorbia pinea var. azorica (Hochst.) Boiss. -- not accepted
  Euphorbia pinetorum (Small) G.L. Webster -- accepted -- pineland spurge
  Euphorbia pinetorum (Small) Jabl. -- not accepted
  Euphorbia pinetorum Dubovik -- not accepted
  Euphorbia pinifolia Lam. -- not accepted
  Euphorbia pinifolia Willd. -- not accepted
  Euphorbia pinkavana M.C. Johnst. -- accepted
  Euphorbia pinnulosa Lojac. -- not accepted
  Euphorbia pinus H. Lév. -- not accepted
  Euphorbia pionosperma V.W. Steinm. & Felger -- accepted
  Euphorbia pirahazo Jum. -- not accepted
  Euphorbia pirottae N. Terrac. -- accepted
  Euphorbia piscatoria Aiton -- accepted
  Euphorbia piscidermis M.G. Gilbert -- accepted
  Euphorbia pisidica Hub.-Mor. & M.S. Khan -- accepted
  Euphorbia pistiifolia Boiss. -- not accepted
  Euphorbia pitcairnensis F. Br. -- not accepted
  Euphorbia pithyusa L. -- accepted
  Euphorbia pithyusa ssp. cupanii (Guss. ex Bertol.) Radcl.-Sm. -- accepted
  Euphorbia pithyusa ssp. pithyusa L. -- accepted
  Euphorbia pithyusa var. dianthifolia (Lojac.) Oudejans -- not accepted
  Euphorbia pithyusa var. procera Gren. & Godr. -- not accepted
  Euphorbia plagiantha Drake -- accepted
  Euphorbia planiticola D.C. Hassall -- accepted
  Euphorbia platyacantha Drake -- not accepted
  Euphorbia platyacantha Pax -- not accepted
  Euphorbia platycephala Pax -- accepted
  Euphorbia platyclada Rauh -- accepted
  Euphorbia platyclada var. hardyi Rauh -- accepted
  Euphorbia platyclada var. platyclada Rauh -- accepted
  Euphorbia platylepis Decne. -- not accepted
  Euphorbia platymammillaris Croizat -- not accepted
  Euphorbia platyphyllos L. -- accepted -- broadleaf spurge
  Euphorbia platyphyllos ssp. flavopurpurea (Willk.) Nyman -- not accepted
  Euphorbia platyphyllos ssp. literata (Jacq.) Holub -- accepted
  Euphorbia platyphyllos ssp. platyphyllos L. -- accepted
  Euphorbia platyphyllos var. literata (Jacq.) W. Koch -- not accepted
  Euphorbia platyphyllos var. subciliata (Pers.) Nyman -- not accepted
  Euphorbia platyrrhiza L.C. Leach -- accepted
  Euphorbia platysperma Engelm. ex S. Watson -- accepted -- flatseed sandmat, flat-seeded spurge, dune spurge
  Euphorbia plebeia Boiss. -- accepted
  Euphorbia plenispina S. Carter -- accepted
  Euphorbia plicata S. Watson -- not accepted
  Euphorbia plumerioides Teijsm. ex Hassk. -- accepted
  Euphorbia plumerioides var. acuminata J.J. Sm. -- not accepted
  Euphorbia plumerioides var. homochroa Boiss. -- not accepted
  Euphorbia plumerioides var. macrocarpa Radcl.-Sm. -- not accepted
  Euphorbia plumerioides var. microphylla Radcl.-Sm. -- not accepted
  Euphorbia plummerae S. Watson -- not accepted
  Euphorbia podadenia Boiss. -- accepted
  Euphorbia podagrica I.M. Johnst. -- not accepted
  Euphorbia podocarpifolia Urb. -- accepted
  Euphorbia poecilophylla (Prokh.) Prokh. -- accepted
  Euphorbia poeppigii (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia poeppigii var. laxa Boiss. -- not accepted
  Euphorbia poggei Pax -- not accepted
  Euphorbia poggei var. benguelensis Pax -- not accepted
  Euphorbia poggei var. villosa Pax -- not accepted
  Euphorbia poinsettiana Buist ex Giah. -- not accepted
  Euphorbia poissonii Pax -- accepted
  Euphorbia poliosperma Urb. -- not accepted
  Euphorbia polyacantha Boiss. -- accepted
  Euphorbia polyacantha ssp. rosenii Pax -- not accepted
  Euphorbia polyacantha var. subinarticulata Schweinf. -- not accepted
  Euphorbia polyantha Pax -- accepted
  Euphorbia polycarpa Benth. -- accepted -- smallseed sandmat
  Euphorbia polycarpa var. appendiculata (Engelm.) Munz -- not accepted
  Euphorbia polycarpa var. carmenensis (Rose) L.C. Wheeler -- accepted
  Euphorbia polycarpa var. genuiflexa L.C. Wheeler -- accepted
  Euphorbia polycarpa var. hirtella Boiss. -- not accepted
  Euphorbia polycarpa var. intermixta (S. Watson) L.C. Wheeler -- not accepted
  Euphorbia polycarpa var. johnstonii L.C. Wheeler -- accepted
  Euphorbia polycarpa var. mejamia L.C. Wheeler -- accepted
  Euphorbia polycarpa var. parishii (Greene) Jeps. -- not accepted
  Euphorbia polycarpa var. petrina (S. Watson) I.M. Johnst. -- not accepted
  Euphorbia polycarpa var. polycarpa Benth. -- accepted -- smallseed sandmat
  Euphorbia polycarpa var. simulans L.C. Wheeler -- not accepted
  Euphorbia polycarpa var. typica L.C. Wheeler -- not accepted
  Euphorbia polycarpa var. vestita S. Watson -- not accepted
  Euphorbia polycaula Boiss. & Hohen. -- accepted
  Euphorbia polycephala Marloth -- accepted
  Euphorbia polychroma A. Kern. -- accepted
  Euphorbia polychroma ssp. lingulata (Heuff.) Soó -- not accepted
  Euphorbia polychroma ssp. microsperma (Murb.) Beck -- not accepted
  Euphorbia polychroma var. microsperma Murb. -- not accepted
  Euphorbia polyclada Boiss. -- not accepted
  Euphorbia polycnemoides Hochst. ex Boiss. -- accepted
  Euphorbia polygalifolia Boiss. & Reut. -- accepted
  Euphorbia polygalifolia ssp. hirta (Lange) M. Laínz -- accepted
  Euphorbia polygalifolia ssp. mariolensis (Rouy) Mateo & Figuerola -- not accepted
  Euphorbia polygalifolia ssp. polygalifolia Boiss. & Reut. -- accepted
  Euphorbia polygalifolia ssp. vasconcensis Vivant ex Kerguélen -- accepted
  Euphorbia polygalifolia var. hirta Lange -- not accepted
  Euphorbia polygona Haw. -- accepted
  Euphorbia polygona var. anoplia (Stapf) D.H. Schnabel -- accepted
  Euphorbia polygona var. exilis D.H. Schnabel -- accepted
  Euphorbia polygona var. hebdomadalis D.H. Schnabel -- accepted
  Euphorbia polygona var. major (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel -- accepted
  Euphorbia polygona var. minor D.H. Schnabel -- accepted
  Euphorbia polygona var. nivea D.H. Schnabel -- accepted
  Euphorbia polygona var. noorsveldensis (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel -- accepted
  Euphorbia polygona var. polygona Haw. -- accepted
  Euphorbia polygona var. striata (A.C. White, R.A. Dyer & B. Sloane) D.H. Schnabel -- accepted
  Euphorbia polygonata Lodd. -- not accepted
  Euphorbia polygonifolia L. -- accepted -- seaside sandmat
  Euphorbia polygonisperma Gren. & Godr. -- not accepted
  Euphorbia polyphylla Engelm. ex Holz. -- accepted -- Lesser Florida spurge
  Euphorbia polytimetica (Prokh.) Prokh. -- not accepted
  Euphorbia pomiformis Thunb. -- not accepted
  Euphorbia ponderosa S. Carter -- accepted
  Euphorbia pondii Millsp. -- accepted
  Euphorbia pontica Prokh. -- not accepted
  Euphorbia popayanensis Pax -- not accepted
  Euphorbia porphyrantha Phil. -- accepted
  Euphorbia porphyrastra Hand.-Mazz. -- not accepted
  Euphorbia porteriana (Small) Oudejans -- accepted -- Porter's sandmat
  Euphorbia porteriana var. keyensis (Small) Oudejans -- not accepted
  Euphorbia porteriana var. scoparia (Small) Oudejans -- not accepted
  Euphorbia portlandica L. -- accepted
  Euphorbia portlandica ssp. tetraceras (Lange) Nyman -- not accepted
  Euphorbia portoricensis Urb. -- not accepted
  Euphorbia portoricensis var. albescens Urb. -- not accepted
  Euphorbia portoricensis var. genuina Urb. -- not accepted
  Euphorbia portucasadiana (Croizat) Subils -- accepted
  Euphorbia portulacoides L. -- accepted
  Euphorbia portulacoides ssp. collina (Phil.) Croizat -- accepted
  Euphorbia portulacoides ssp. major (Müll. Arg.) Croizat -- accepted
  Euphorbia portulacoides ssp. nahuelhuapina Croizat -- not accepted
  Euphorbia portulacoides ssp. normalis Croizat -- not accepted
  Euphorbia portulacoides ssp. portulacoides L. -- accepted
  Euphorbia portulacoides var. acutifolia Boiss. -- not accepted
  Euphorbia portulacoides var. andensis Croizat -- not accepted
  Euphorbia portulacoides var. bridgesii Boiss. -- not accepted
  Euphorbia portulacoides var. collina (Phil.) Croizat -- not accepted
  Euphorbia portulacoides var. glabra Phil. -- not accepted
  Euphorbia portulacoides var. glaucescens Chodat & Wilczek -- not accepted
  Euphorbia portulacoides var. major Müll. Arg. -- not accepted
  Euphorbia portulacoides var. minor Hicken -- not accepted
  Euphorbia portulacoides var. normalis Kuntze -- not accepted
  Euphorbia portulacoides var. obtusifolia Müll. Arg. -- not accepted
  Euphorbia portulacoides var. porphyrantha Kuntze -- not accepted
  Euphorbia portulacoides var. spathulata Chodat & Wilczek -- not accepted
  Euphorbia portulacoides var. trinervia Boiss. -- not accepted
  Euphorbia portulacoides var. xanthantha Kuntze -- not accepted
  Euphorbia portulana S. Watson -- not accepted
  Euphorbia postii Boiss. -- not accepted
  Euphorbia potaninii Prokh. -- accepted
  Euphorbia potentilloides Boiss. -- accepted
  Euphorbia potosina Fernald -- accepted
  Euphorbia potosina var. lamasis Carvajal & Lomelí -- not accepted
  Euphorbia pouzolzii Loisel. -- not accepted
  Euphorbia praecox (Boiss.) Fisch. ex Grossh. -- not accepted
  Euphorbia preslii Guss. -- not accepted
  Euphorbia preslii Spruner ex Nyman -- not accepted
  Euphorbia preslii var. andicola Danguy & Cherm. -- not accepted
  Euphorbia preslii var. glaberrima Boiss. -- not accepted
  Euphorbia preussii Pax -- not accepted
  Euphorbia prieuriana Baill. -- not accepted
  Euphorbia primulifolia Baker -- accepted
  Euphorbia primulifolia var. begardii Cremers -- accepted
  Euphorbia primulifolia var. primulifolia Baker -- accepted
  Euphorbia proballyana L.C. Leach -- accepted
  Euphorbia proballyana var. multangula S. Carter -- accepted
  Euphorbia proballyana var. proballyana L.C. Leach -- accepted
  Euphorbia procera M. Bieb. -- accepted
  Euphorbia procera var. trichocarpa W.D.J. Koch -- not accepted
  Euphorbia procera var. tuberculata W.D.J. Koch -- not accepted
  Euphorbia proctorii (D.G. Burch) Correll -- accepted
  Euphorbia procumbens Mill. -- accepted
  Euphorbia procumbens Meerb. -- not accepted
  Euphorbia procumbens DC. -- not accepted
  Euphorbia prokhanovii Popov -- not accepted
  Euphorbia prolifera Buch.-Ham. ex D. Don -- accepted
  Euphorbia prolifera Ehrenb. ex Boiss. -- not accepted
  Euphorbia promecocarpa P.H. Davis -- accepted
  Euphorbia prona S. Carter -- accepted
  Euphorbia propinqua R. Br. ex N.E. Br. -- not accepted
  Euphorbia prorepens Popov -- not accepted
  Euphorbia prostrata Aiton -- accepted -- ground spurge, blue weed, prostrate sandmat, prostrate spurge
  Euphorbia prostrata Burch. ex Hemsl. -- not accepted
  Euphorbia prostrata var. caudirhiza Fosberg -- not accepted
  Euphorbia prostrata var. vestita Engelm. ex Boiss. -- not accepted
  Euphorbia proteifolia Boiss. -- not accepted
  Euphorbia provincialis Willd. -- not accepted
  Euphorbia provincialis Noë ex Nyman -- not accepted
  Euphorbia prunifolia Jacq. -- not accepted -- painted euphorbia
  Euphorbia prunifolia f. silvatica Chodat & Hassl. -- not accepted
  Euphorbia prunifolia var. angustifolia Müll. Arg. -- not accepted
  Euphorbia prunifolia var. genuina Müll. Arg. -- not accepted
  Euphorbia prunifolia var. repanda Müll. Arg. -- not accepted
  Euphorbia przewalskii Prokh. -- not accepted
  Euphorbia psammogeton P.S. Green -- accepted
  Euphorbia pseudagraria P.A. Smirn. -- accepted
  Euphorbia pseudoapios Maire & Weiller -- accepted
  Euphorbia pseudobrachiata Dinter -- not accepted
  Euphorbia pseudoburuana P.R.O. Bally & S. Carter -- accepted
  Euphorbia pseudocactus A. Berger -- accepted
  Euphorbia pseudochamaesyce Fisch. & C.A. Mey. -- not accepted
  Euphorbia pseudochamaesyce f. pilosa (C.A. Mey.) Kitag. -- not accepted
  Euphorbia pseudocyparissias Jord. -- not accepted
  Euphorbia pseudodendroides H. Lindb. -- not accepted
  Euphorbia pseudoengleri Pax -- not accepted
  Euphorbia pseudofalcata Chiov. -- not accepted
  Euphorbia pseudofulva Miranda -- not accepted
  Euphorbia pseudoglareosa Klokov -- not accepted
  Euphorbia pseudoglobosa Marloth -- accepted
  Euphorbia pseudograeca Grossh. -- not accepted
  Euphorbia pseudograntii Pax -- accepted
  Euphorbia pseudograntii (Hook. f.) Bruyns -- not accepted
  Euphorbia pseudohirsuta Bruyns -- accepted
  Euphorbia pseudoholstii Pax -- not accepted
  Euphorbia pseudolaevis Bruyns -- accepted
  Euphorbia pseudomollis Bruyns -- accepted
  Euphorbia pseudonervosa Bruyns -- not accepted
  Euphorbia pseudonudicaulis Bruyns -- accepted
  Euphorbia pseudonutans Thell. -- not accepted
  Euphorbia pseudonutans var. hirsuta (Torr.) Farw. -- not accepted
  Euphorbia pseudopeplus Speg. -- not accepted
  Euphorbia pseudopetiolata Bruyns -- accepted
  Euphorbia pseudoracemosa (P.R.O. Bally) Bruyns -- accepted
  Euphorbia pseudoracemosa var. lorifolia (P.R.O. Bally) Bruyns -- accepted
  Euphorbia pseudoracemosa var. pseudoracemosa (P.R.O. Bally) Bruyns -- accepted
  Euphorbia pseudosaxatilis Kanitz -- not accepted
  Euphorbia pseudoserpyllifolia Millsp. -- not accepted
  Euphorbia pseudoserpyllifolia f. typica J.T. Howell -- not accepted
  Euphorbia pseudoserpyllifolia f. villosa J.T. Howell -- not accepted
  Euphorbia pseudosikkimensis (Hurus. & Yu. Tanaka) Radcl.-Sm. -- accepted
  Euphorbia pseudosimplex Bruyns -- accepted
  Euphorbia pseudosororia (Prokh.) Grossh. -- not accepted
  Euphorbia pseudostellata Bruyns -- accepted
  Euphorbia pseudotrinervis Bruyns -- accepted
  Euphorbia pseudotuberosa Pax -- accepted
  Euphorbia pseudovillosa Klokov -- not accepted
  Euphorbia pseudovolkensii Bruyns -- accepted
  Euphorbia pteroclada L.C. Leach -- accepted
  Euphorbia pterococca Brot. -- accepted
  Euphorbia pterococca var. pilosa Lazare & Charpin -- not accepted
  Euphorbia pteroneura A. Berger -- accepted
  Euphorbia pteroneura var. macdougalliana Croizat -- not accepted
  Euphorbia pteroneura var. typica Croizat -- not accepted
  Euphorbia pubentissima Michx. -- accepted -- false flowering spurge, southeastern flowering spurge
  Euphorbia pubentissima var. glabrata Boiss. -- not accepted
  Euphorbia pubera Blume -- not accepted
  Euphorbia puberula Fernald -- not accepted
  Euphorbia pubescens Vahl -- not accepted
  Euphorbia pubescens f. subglabra (Gren. & Godr.) O. Bolòs & Vigo -- not accepted
  Euphorbia pubescens subvar. integrifolia Deysson -- not accepted
  Euphorbia pubescens subvar. serrulatifolia Deysson -- not accepted
  Euphorbia pubescens var. crispata (Willd. ex Hornem.) Boiss. -- not accepted
  Euphorbia pubescens var. erioclada Sart. ex Nyman -- not accepted
  Euphorbia pubescens var. glabrescens St.-Lag. -- not accepted
  Euphorbia pubescens var. glabriflora (Vis.) Nyman -- not accepted
  Euphorbia pubescens var. laevis Merino -- not accepted
  Euphorbia pubescens var. leucotricha (Boiss.) Boiss. -- not accepted
  Euphorbia pubescens var. serrata Lojac. -- not accepted
  Euphorbia pubescens var. subglabra Gren. & Godr. -- not accepted
  Euphorbia pubicaulis S. Moore -- not accepted
  Euphorbia pubigera Friv. ex Boiss. -- not accepted
  Euphorbia pubiglans N.E. Br. -- accepted
  Euphorbia pudibunda (P.R.O. Bally) Bruyns -- accepted
  Euphorbia pudibunda var. lanata (S. Carter) Bruyns -- accepted
  Euphorbia pudibunda var. pudibunda (P.R.O. Bally) Bruyns -- accepted
  Euphorbia pudibunda var. rotundifolia (Malaisse & Lecron) Bruyns -- accepted
  Euphorbia pueblensis Brandegee -- accepted
  Euphorbia pugniformis Boiss. -- not accepted
  Euphorbia pulchella Lag. & Rodr. -- not accepted
  Euphorbia pulchella Brouss. ex DC. -- not accepted
  Euphorbia pulchella Sessé & Moç. -- not accepted
  Euphorbia pulchella Kunth -- not accepted
  Euphorbia pulcherrima Willd. ex Klotzsch -- accepted -- poinsettia, nochebuena, flor de pascua
  Euphorbia pulcherrima f. lutea Standl. -- not accepted
  Euphorbia pulverulenta Kit. -- not accepted
  Euphorbia pulvinata Marloth -- accepted
  Euphorbia pumicicola Huft -- accepted
  Euphorbia pumila Sibth. & Sm. -- not accepted
  Euphorbia pumila Pall. ex Ledeb. -- not accepted
  Euphorbia punctata Delile -- accepted
  Euphorbia punctata Krock. -- not accepted
  Euphorbia punctulata Andersson -- accepted
  Euphorbia pungens Lam. -- not accepted
  Euphorbia pungens Banks & Sol. -- not accepted
  Euphorbia punicea Sw. -- accepted
  Euphorbia purisimana Millsp. -- not accepted
  Euphorbia purpurascens Schousb. -- not accepted
  Euphorbia purpurascens Schumach. & Thonn. -- not accepted
  Euphorbia purpurascens Salzm. ex Ball -- not accepted
  Euphorbia purpurascens Deysson -- not accepted
  Euphorbia purpurata Thuill. -- not accepted
  Euphorbia purpurata var. elliptica Pers. -- not accepted
  Euphorbia purpurea (Raf.) Fernald -- accepted -- Darlington's spurge, Darlington's glade spurge
  Euphorbia purpureomaculata T.J. Feng & J.X. Huang -- not accepted
  Euphorbia pusilla Lag. -- not accepted
  Euphorbia pusillima Post -- not accepted
  Euphorbia pycnanthema Engelm. -- not accepted
  Euphorbia pycnanthema f. serrata Millsp. -- not accepted
  Euphorbia pycnophylla K. Koch -- not accepted
  Euphorbia pycnostegia Boiss. -- accepted
  Euphorbia pycnostegia var. laxa Boiss. -- not accepted
  Euphorbia pycnostegia var. zornioides (Boiss.) Santapau -- not accepted
  Euphorbia pygmaea Ledeb. -- accepted
  Euphorbia pygmaea Phil. -- not accepted
  Euphorbia pyrenaica Jord. -- accepted
  Euphorbia pyrifolia Lam. -- accepted
  Euphorbia pyrifolia var. coriacea Radcl.-Sm. -- accepted
  Euphorbia pyrifolia var. pyrifolia Lam. -- accepted
  Euphorbia pyriformis N.E. Br. -- not accepted
  Euphorbia pythinsa Friv. ex Nyman -- not accepted
  Euphorbia qarad Deflers -- accepted
  Euphorbia quadrangularis Pax -- accepted
  Euphorbia quadrata Nel -- accepted
  Euphorbia quadrialata Pax -- accepted
  Euphorbia quadrilatera L.C. Leach -- accepted
  Euphorbia quadrispina S. Carter -- accepted
  Euphorbia quaitensis S. Carter -- accepted
  Euphorbia quartziticola Leandri -- accepted
  Euphorbia quinquecostata Volkens -- accepted
  Euphorbia quinqueradiata Kitam. -- not accepted
  Euphorbia quintasii Pax -- not accepted
  Euphorbia quitensis Boiss. -- accepted
  Euphorbia rablensis Wulfen ex Schrank -- not accepted
  Euphorbia racemosa E. Mey. ex Boiss. -- not accepted
  Euphorbia racemosa Tausch ex Rchb. -- not accepted
  Euphorbia radians Benth. -- accepted -- sun spurge
  Euphorbia radians var. radians Benth. -- accepted
  Euphorbia radians var. stormiae (Croizat) Rzed. & Calderón -- accepted
  Euphorbia radiata Thunb. -- not accepted
  Euphorbia radiata E. Mey. ex Boiss. -- not accepted
  Euphorbia radicans Moric. ex Klotzsch & Garcke -- not accepted
  Euphorbia radiifera L.C. Leach -- accepted
  Euphorbia radioloides Boiss. -- accepted
  Euphorbia radioloides var. rubra Millsp. -- not accepted
  Euphorbia rafinesquei Greene -- not accepted
  Euphorbia ragusana Rchb. -- not accepted
  Euphorbia ramanensis Baum -- not accepted
  Euphorbia ramipressa Croizat -- accepted
  Euphorbia ramofraga Denis & Humbert ex Leandri -- accepted
  Euphorbia ramosa Seaton -- accepted
  Euphorbia ramosa var. villosior Greenm. -- not accepted
  Euphorbia ramosissima Loisel. -- not accepted
  Euphorbia ramosissima Hook. & Arn. -- not accepted
  Euphorbia ramulosa L.C. Leach -- accepted
  Euphorbia randrianjohanyi Haev. & J.N. Labat -- accepted
  Euphorbia rangeana Dinter ex Jacobsen -- not accepted
  Euphorbia rangovalensis Leandri -- accepted
  Euphorbia raphanorrhiza (Millsp.) J.F. Macbr. -- accepted
  Euphorbia raphilippii Oudejans -- accepted
  Euphorbia rapulum Kar. & Kir. -- accepted
  Euphorbia rattanii S. Watson -- not accepted
  Euphorbia rauhii Haev. & J.N. Labat -- accepted
  Euphorbia rayturneri V.W. Steinm. & Jercinovic -- accepted
  Euphorbia razafindratsirae Lavranos -- accepted
  Euphorbia razafinjohanyi Ursch & Leandri -- accepted
  Euphorbia reboudiana Coss. ex Batt. & Trab. -- not accepted
  Euphorbia rechingeri Greuter -- accepted
  Euphorbia reclinata P.R.O. Bally & S. Carter -- accepted
  Euphorbia reconciliationis Radcl.-Sm. -- accepted
  Euphorbia recta Klotzsch -- not accepted
  Euphorbia rectirama N.E. Br. -- accepted
  Euphorbia recurva Hook. f. -- accepted
  Euphorbia reflexa Formánek -- not accepted
  Euphorbia refracta Lowe -- not accepted
  Euphorbia refugii Croizat -- not accepted
  Euphorbia reghinii (Chiov.) Vollesen -- not accepted
  Euphorbia regina H. Lév. -- not accepted
  Euphorbia regis-jubae Webb & Berthel. -- accepted
  Euphorbia reichenbachiana Willk. -- not accepted
  Euphorbia reichenbachiana Lojac. -- not accepted
  Euphorbia reineckei Pax -- accepted
  Euphorbia reinhardtii Volkens -- not accepted
  Euphorbia reinhardtii var. bilocularis (N.E. Br.) Oudejans -- not accepted
  Euphorbia reinwardtiana Steud. -- not accepted
  Euphorbia remyi A. Gray ex Boiss. -- accepted -- Remy's sandmat
  Euphorbia remyi var. hanaleiensis Sherff -- not accepted -- Remy's sandmat
  Euphorbia remyi var. kahiliana Sherff -- not accepted
  Euphorbia remyi var. leptopoda Sherff -- not accepted
  Euphorbia remyi var. lydgatei Sherff -- not accepted
  Euphorbia remyi var. molesta Sherff -- not accepted
  Euphorbia remyi var. olokelensis Skottsb. & Sherff -- not accepted
  Euphorbia remyi var. pteropoda Sherff -- not accepted
  Euphorbia remyi var. wahiawana Sherff -- not accepted
  Euphorbia remyi var. waimeana Sherff -- not accepted
  Euphorbia remyi var. wilkesii Sherff -- not accepted
  Euphorbia reniformis Blume -- accepted
  Euphorbia renneyi (S. Carter) Bruyns -- accepted
  Euphorbia renouardii Pax -- not accepted
  Euphorbia repanda (Haw.) Sweet -- accepted
  Euphorbia repens K. Koch -- accepted
  Euphorbia repetita Hochst. ex A. Rich. -- accepted
  Euphorbia reptans P.R.O. Bally & S. Carter -- accepted
  Euphorbia requienii Lojac. -- not accepted
  Euphorbia requienii var. dianthifolia Lojac. -- not accepted
  Euphorbia resinifera O. Berg -- accepted -- resin spurge, Euphorbe à résine
  Euphorbia resinifera var. chlarosoma Croizat -- not accepted
  Euphorbia resinifera var. typica Croizat -- not accepted
  Euphorbia restiacea Benth. -- accepted
  Euphorbia restituta N.E. Br. -- accepted
  Euphorbia restricta R.A. Dyer -- accepted
  Euphorbia retroscabra S. Watson -- not accepted
  Euphorbia retrospina Rauh & Gerold -- accepted
  Euphorbia retusa Forssk. -- accepted
  Euphorbia retusa (L.) Cav. -- not accepted
  Euphorbia reuteriana Boiss. -- accepted
  Euphorbia revoluta Engelm. -- accepted -- threadstem sandmat, threadstem spurge
  Euphorbia rhabdodes Boiss. -- accepted
  Euphorbia rhabdotosperma Radcl.-Sm. -- accepted
  Euphorbia rhipsaloides Lem. -- not accepted
  Euphorbia rhizophora (P.R.O. Bally) Bruyns -- accepted
  Euphorbia rhombea Willd. ex Link -- not accepted
  Euphorbia rhombifolia Boiss. -- accepted
  Euphorbia rhytidosperma Boiss. & Balansa -- accepted
  Euphorbia rhytisperma (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia riae Pax & K. Hoffm. -- not accepted
  Euphorbia richardiana Baill. -- not accepted
  Euphorbia richardsiae L.C. Leach -- accepted
  Euphorbia richardsiae ssp. richardsiae L.C. Leach -- accepted
  Euphorbia richardsiae ssp. robusta L.C. Leach -- accepted
  Euphorbia richardsonii Mayfield -- accepted
  Euphorbia ridleyi Croizat -- accepted
  Euphorbia riebeckii Pax -- accepted
  Euphorbia riedeliana Boiss. -- not accepted
  Euphorbia rigens Sweet -- not accepted
  Euphorbia rigida Loisel. -- not accepted
  Euphorbia rigida M. Bieb. -- accepted -- upright myrtle spurge
  Euphorbia rigida var. mauretanica (Maire) Oudejans -- not accepted
  Euphorbia rigidula Steud. -- not accepted
  Euphorbia rigoi Boiss. ex Freyn -- not accepted
  Euphorbia riinae V.W. Steinm. -- accepted
  Euphorbia rimarum Coss. & Balansa -- accepted
  Euphorbia rinconis M.E. Jones -- not accepted
  Euphorbia riparia Jord. -- not accepted
  Euphorbia ritchiei (P.R.O. Bally) Bruyns -- accepted
  Euphorbia ritchiei ssp. marsabitensis (S. Carter) Bruyns -- accepted
  Euphorbia ritchiei ssp. nyambensis (S. Carter) Bruyns -- accepted
  Euphorbia ritchiei ssp. ritchiei (P.R.O. Bally) Bruyns -- accepted
  Euphorbia rivae Pax -- accepted
  Euphorbia rivasii P. Palau -- not accepted
  Euphorbia rivularis A. Heller -- not accepted
  Euphorbia robbiae Turrill -- not accepted
  Euphorbia robecchii Pax -- accepted
  Euphorbia robivelonae Rauh -- accepted
  Euphorbia robusta var. interioris Norton -- not accepted
  Euphorbia rochaensis (Croizat) Alonso Paz & Marchesi -- accepted
  Euphorbia rochebrunei Franch. & Sav. -- not accepted
  Euphorbia rockii C.N. Forbes -- accepted -- Koolau Range sandmat
  Euphorbia rockii var. grandiflora (Hillebr.) Oudejans -- not accepted
  Euphorbia roemeriana Scheele -- accepted -- Roemer's spurge
  Euphorbia roeseri (Boiss.) Halácsy -- not accepted
  Euphorbia rogeri N.E. Br. -- not accepted
  Euphorbia rohlenae Velen. -- accepted
  Euphorbia roschanica (Ikonn.) Czerepan. -- not accepted
  Euphorbia rosea Retz. -- accepted
  Euphorbia rosescens E.L. Bridges & Orzell -- accepted -- scrub spurge
  Euphorbia rossiana Pax -- accepted
  Euphorbia rossica P.A. Smirn. -- accepted
  Euphorbia rossii Rauh & Buchloh -- accepted
  Euphorbia rosularis Fed. -- accepted
  Euphorbia rothiana Spreng. -- accepted
  Euphorbia rothiana var. pubescens (Boiss.) Oudejans -- not accepted
  Euphorbia rothiana var. wightiana (Boiss.) Oudejans -- not accepted
  Euphorbia rothrockii (Millsp.) Oudejans -- not accepted
  Euphorbia rotundata Hochst. -- not accepted
  Euphorbia rotundifolia (Lam.) Loisel. -- not accepted
  Euphorbia rotundifolia Hook. & Arn. -- not accepted
  Euphorbia rowlandii R.A. Dyer -- accepted
  Euphorbia royleana Boiss. -- accepted
  Euphorbia rubella Pax -- accepted
  Euphorbia rubens Chaix -- not accepted
  Euphorbia rubescens Link -- not accepted
  Euphorbia rubicunda Blume -- not accepted
  Euphorbia rubida Greenm. -- not accepted
  Euphorbia rubra Cav. -- not accepted
  Euphorbia rubricaulis Regel -- not accepted
  Euphorbia rubriflora N.E. Br. -- accepted
  Euphorbia rubriflora H. Lév. -- not accepted
  Euphorbia rubriseminalis S. Carter ex Boulos -- accepted
  Euphorbia rubrispinosa S. Carter -- accepted
  Euphorbia rubromarginata L.E. Newton -- accepted
  Euphorbia rubrosperma Lotsy -- not accepted
  Euphorbia ruderalis Dumort. -- not accepted
  Euphorbia ruderalis Scheele -- not accepted
  Euphorbia rudis N.E. Br. -- not accepted
  Euphorbia rudolfii N.E. Br. -- accepted
  Euphorbia ruegeliana Shuttlew. ex Boiss. -- not accepted
  Euphorbia ruficeps S. Carter -- accepted
  Euphorbia rugosa Kit. -- not accepted
  Euphorbia rugosiflora L.C. Leach -- accepted
  Euphorbia rugosissima Pau & Font Quer -- not accepted
  Euphorbia rugulosa (Engelm. ex Millsp.) Greene -- not accepted
  Euphorbia ruiziana (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia ruizlealii Subils -- accepted
  Euphorbia rumelica Formánek -- not accepted
  Euphorbia rumicifolia Boiss. -- not accepted
  Euphorbia rupestris Ledeb. -- accepted
  Euphorbia rupestris Larrañaga -- not accepted
  Euphorbia rupicola Boiss. -- not accepted
  Euphorbia rupicola Scheele -- not accepted
  Euphorbia rupicola var. almeriensis Pau -- not accepted
  Euphorbia rupicola var. clementei (Boiss.) Pau -- not accepted
  Euphorbia rupicola var. major Boiss. -- not accepted
  Euphorbia rusbyi Greene -- not accepted
  Euphorbia ruscifolia (Boiss.) N.E. Br. -- accepted
  Euphorbia ruscinonensis Boiss. -- not accepted
  Euphorbia ruspolii Chiov. -- not accepted
  Euphorbia rutilis (Millsp.) Standl. & Steyerm. -- accepted
  Euphorbia rzedowskii McVaugh -- accepted
  Euphorbia sabulicola Boiss. -- accepted
  Euphorbia saccharata Boiss. -- accepted
  Euphorbia sacchii Chiov. -- not accepted
  Euphorbia sachetiana (J. Florence) Govaerts -- accepted
  Euphorbia sagittaria Marloth -- not accepted
  Euphorbia sagraeana A. Rich. ex Boiss. -- not accepted
  Euphorbia sahendi Bornm. -- accepted
  Euphorbia sajanensis (Boiss.) Baikov -- not accepted
  Euphorbia sakarahaensis Rauh -- accepted
  Euphorbia salicetorum Jord. -- not accepted
  Euphorbia salicifolia Host -- accepted
  Euphorbia salicifolia f. pseudosalicifolia (Schur) Oudejans -- not accepted
  Euphorbia salicifolia var. angustata Rochel -- not accepted
  Euphorbia salicifolia var. incana (Schur) Nyman -- not accepted
  Euphorbia salicifolia var. pseudosalicifolia Schur -- not accepted
  Euphorbia salina Willd. ex Boiss. -- not accepted
  Euphorbia salota Leandri -- accepted
  Euphorbia salsicola S. Carter -- accepted
  Euphorbia salsuginosa (McVaugh) Radcl.-Sm. & Govaerts -- not accepted
  Euphorbia samburuensis P.R.O. Bally & S. Carter -- accepted
  Euphorbia sampsonii Hance -- not accepted
  Euphorbia sanasunitensis Hand.-Mazz. -- not accepted
  Euphorbia sancta Pax -- not accepted
  Euphorbia sanctae-catharinae Fayed -- accepted
  Euphorbia sanguinea Hochst. & Steud. ex Benth. -- not accepted
  Euphorbia sanguinea Thore -- not accepted
  Euphorbia sanguinea var. intermedia Boiss. -- not accepted
  Euphorbia sanguinea var. jemenica Schweinf. -- not accepted
  Euphorbia sanguinea var. natalensis Boiss. -- not accepted
  Euphorbia sanguinea var. nilagirica (Miq.) Boiss. -- not accepted
  Euphorbia sanguinea var. setigera (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia sanmartensis Rusby -- not accepted
  Euphorbia santapaui A.N. Henry -- accepted
  Euphorbia sapiifolia Baill. -- not accepted
  Euphorbia sapinii De Wild. -- accepted
  Euphorbia saratoi Ardoino -- not accepted
  Euphorbia sarawschanica Regel -- accepted
  Euphorbia sarcodes Boiss. -- accepted
  Euphorbia sarcostemmatoides Dinter -- not accepted
  Euphorbia sarcostemmoides J.H. Willis -- accepted
  Euphorbia sareciana M.G. Gilbert -- accepted
  Euphorbia sareptana Becker -- accepted
  Euphorbia sarmentosa Welw. ex Pax -- accepted
  Euphorbia satureioides Lam. -- not accepted
  Euphorbia saudiarabica Fayed & D. Al-Zahrani -- accepted
  Euphorbia sauliana Boreau ex Boiss. -- not accepted
  Euphorbia saurica Baikov -- accepted
  Euphorbia savaryi Kiss -- not accepted
  Euphorbia saxatilis Jacq. -- accepted
  Euphorbia saxatilis var. carnica Boiss. -- not accepted
  Euphorbia saxicola Radcl.-Sm. -- accepted
  Euphorbia saxorum P.R.O. Bally & S. Carter -- accepted
  Euphorbia scabrella Boiss. -- not accepted
  Euphorbia scabrifolia Kurz -- accepted
  Euphorbia scandens Kunth -- accepted
  Euphorbia scarlatina S. Carter -- accepted
  Euphorbia scatorhiza S. Carter -- accepted
  Euphorbia schaeferi Dinter -- not accepted
  Euphorbia schaijesii (Malaisse) Bruyns -- accepted
  Euphorbia scheffleri Pax -- accepted
  Euphorbia schickendantzii Hieron. -- accepted
  Euphorbia schiedeana (Klotzsch & Garcke) Mayfield ex C. Nelson -- accepted
  Euphorbia schillingii Radcl.-Sm. -- accepted
  Euphorbia schillingii var. praecox A.D. Schill. ex Radcl.-Sm. -- not accepted
  Euphorbia schimperi C. Presl -- accepted
  Euphorbia schimperiana Scheele -- accepted
  Euphorbia schimperiana Hochst. ex A. Rich. -- not accepted
  Euphorbia schimperiana var. buchananii (Pax) N.E. Br. -- not accepted
  Euphorbia schimperiana var. pubescens (N.E. Br.) S. Carter -- accepted
  Euphorbia schimperiana var. schimperiana Scheele -- accepted
  Euphorbia schimperiana var. velutina N.E. Br. -- accepted
  Euphorbia schinzii Pax -- accepted
  Euphorbia schizacantha Pax -- accepted
  Euphorbia schizadenia Boiss. & Hohen. -- not accepted
  Euphorbia schizoceras Boiss. -- not accepted
  Euphorbia schizolepis F. Muell. ex Boiss. -- accepted
  Euphorbia schizolepis var. glabra Benth. -- not accepted
  Euphorbia schizoloba Engelm. -- accepted -- Mojave spurge
  Euphorbia schizoloba var. mollis Norton -- not accepted
  Euphorbia schlechtendalii Boiss. -- accepted
  Euphorbia schlechtendalii var. pacifica McVaugh -- accepted
  Euphorbia schlechtendalii var. schlechtendalii Boiss. -- accepted
  Euphorbia schlechtendalii var. websteri McVaugh -- accepted
  Euphorbia schlechteri Pax -- accepted
  Euphorbia schmitzii L.C. Leach -- accepted
  Euphorbia schoenlandii Pax -- accepted
  Euphorbia schottiana Boiss. -- accepted
  Euphorbia schubei Pax -- accepted
  Euphorbia schugnanica B. Fedtsch. -- accepted
  Euphorbia schultzii Benth. -- accepted
  Euphorbia schumannii Radcl.-Sm. -- accepted
  Euphorbia schweinfurthii Balf. f. -- accepted
  Euphorbia sciadophila Boiss. -- accepted
  Euphorbia sciadophila f. orbicularis Chodat & Hassl. -- not accepted
  Euphorbia scitula L.C. Leach -- accepted
  Euphorbia sclerocyathium Korovin & Popov -- accepted
  Euphorbia sclerophylla Boiss. -- accepted
  Euphorbia sclerophylla var. myrtifolia Boiss. -- not accepted
  Euphorbia sclerophylla var. ruscifolia Boiss. -- not accepted
  Euphorbia scolopendrea Haw. -- not accepted
  Euphorbia scoparia N.E. Br. -- not accepted
  Euphorbia scopiformis (Klotzsch & Garcke) Boiss. -- not accepted
  Euphorbia scopoliana Steud. -- not accepted
  Euphorbia scopulorum Brandegee -- accepted
  Euphorbia scopulorum var. inornata M.C. Johnst. -- accepted
  Euphorbia scopulorum var. nuda M.C. Johnst. -- accepted
  Euphorbia scopulorum var. scopulorum Brandegee -- accepted
  Euphorbia scordiifolia Jacq. -- accepted
  Euphorbia scotanum Schltdl. -- accepted
  Euphorbia scotanum var. yavalquahuitl (Schltdl.) Boiss. -- not accepted
  Euphorbia scripta Sommier & Levier -- accepted
  Euphorbia scutiformis V.W. Steinm. & P.E. Berry -- accepted
  Euphorbia scyphadena S. Carter -- accepted
  Euphorbia sebastinei Binojk. & N.P. Balakr. -- accepted
  Euphorbia sebsebei M.G. Gilbert -- accepted
  Euphorbia seclusa N.E. Br. -- not accepted
  Euphorbia seemannii Klotzsch -- not accepted
  Euphorbia segetalis L. -- accepted -- grainfield spurge
  Euphorbia segetalis ssp. linifolia (Nath. ex L.) Oudejans -- not accepted
  Euphorbia segetalis var. litoralis Lange -- not accepted
  Euphorbia segetalis var. longibracteata (DC.) Boiss. -- not accepted
  Euphorbia segetalis var. pinea (L.) Lange -- accepted
  Euphorbia segetalis var. segetalis L. -- accepted
  Euphorbia segoviensis (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia seguieri (Scop.) All. -- not accepted
  Euphorbia seguieriana Neck. -- accepted
  Euphorbia seguieriana ssp. hohenackeri (Boiss.) Rech. f. -- accepted
  Euphorbia seguieriana ssp. loiseleurii (Rouy) Greuter & Burdet -- not accepted
  Euphorbia seguieriana ssp. seguieriana Neck. -- accepted
  Euphorbia seguieriana var. arenivaga (Martrin-Donos) Oudejans -- not accepted
  Euphorbia seguieriana var. dentata (Chabert) Oudejans -- not accepted
  Euphorbia seguieriana var. firma (Ledeb.) Oudejans -- not accepted
  Euphorbia seguieriana var. intermedia (Savul.) Oudejans -- not accepted
  Euphorbia seguieriana var. lanceolata (Cariot) Oudejans -- not accepted
  Euphorbia seguieriana var. latifolia (J.J. Schmitz & Regel) Oudejans -- not accepted
  Euphorbia seguieriana var. minor (Duby) Wilczek -- not accepted
  Euphorbia seguieriana var. prostrata Fiori -- not accepted
  Euphorbia seguieriana var. sturii (Holuby) Oudejans -- not accepted
  Euphorbia seibanica Lavranos & Gifri -- accepted
  Euphorbia sekukuniensis R.A. Dyer -- accepted
  Euphorbia seleri Donn. Sm. -- accepted
  Euphorbia selloi (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia selloi var. setosa Boiss. -- not accepted
  Euphorbia selousiana S. Carter -- accepted
  Euphorbia semiperfoliata Viv. -- accepted
  Euphorbia semiverticillata Halácsy -- not accepted
  Euphorbia semivillosa (Prokh.) Krylov -- accepted
  Euphorbia semperflorens L.C. Leach -- accepted
  Euphorbia sendaica Makino -- accepted
  Euphorbia senguptae N.P. Balakr. & Subr. -- accepted
  Euphorbia senilis Standl. & Steyerm. -- not accepted
  Euphorbia sennenii Pau -- not accepted
  Euphorbia sennii Chiov. -- accepted
  Euphorbia sepens ssp. flexicaulis (Scheele) Thell. -- not accepted
  Euphorbia sepens ssp. psilocyanthia Thell. -- not accepted
  Euphorbia sepium N.E. Br. -- not accepted
  Euphorbia septentrionalis P.R.O. Bally & S. Carter -- accepted
  Euphorbia septentrionalis ssp. gamugofana M.G. Gilbert -- accepted
  Euphorbia septentrionalis ssp. septentrionalis P.R.O. Bally & S. Carter -- accepted
  Euphorbia sepulta P.R.O. Bally & S. Carter -- accepted
  Euphorbia sera-comans Bubani -- not accepted
  Euphorbia serbica Formánek -- not accepted
  Euphorbia serendipita L.E. Newton -- accepted
  Euphorbia seretii De Wild. -- accepted
  Euphorbia seretii ssp. seretii De Wild. -- accepted
  Euphorbia seretii ssp. variantissima L.C. Leach -- accepted
  Euphorbia sericocarpa Hand.-Mazz. -- not accepted
  Euphorbia serotina Host -- not accepted
  Euphorbia serpens Kunth -- accepted -- matted sandmat, creeping spurge, round-leafed spurge
  Euphorbia serpens Balb. ex Boiss. -- not accepted
  Euphorbia serpens var. fissistipula Thell. -- not accepted
  Euphorbia serpens var. flexicaulis (Scheele) J.M. Coult. -- not accepted
  Euphorbia serpens var. imbricata Boiss. -- not accepted
  Euphorbia serpens var. indica Engelm. ex Boiss. -- not accepted
  Euphorbia serpens var. microphylla Müll. Arg. -- not accepted
  Euphorbia serpens var. montevidensis (Boiss.) Cabrera -- not accepted
  Euphorbia serpens var. ovalifolia (Engelm. ex Klotzsch) Allem -- not accepted
  Euphorbia serpens var. radicans Englm. ex Boiss. -- not accepted
  Euphorbia serpentini Novák -- accepted
  Euphorbia serpicula Hiern -- not accepted
  Euphorbia serpiformis Boiss. -- not accepted
  Euphorbia serpyllifolia Pers. -- accepted -- thymeleaf sandmat
  Euphorbia serpyllifolia ssp. hirtella (Engelm. ex S. Watson) Oudejans -- not accepted
  Euphorbia serpyllifolia var. consanguinea Boiss. -- not accepted
  Euphorbia serpyllifolia var. genuina Boiss. -- not accepted
  Euphorbia serpyllifolia var. hirtula (Engelm. ex S. Watson) L.C. Wheeler -- accepted -- Thymeleaf sandmat
  Euphorbia serpyllifolia var. rugulosa Engelm. ex Millsp. -- not accepted
  Euphorbia serpyllifolia var. serpyllifolia Pers. -- accepted -- thymeleaf sandmat
  Euphorbia serrata L. -- accepted -- serrate spurge, toothed spurge, saw-toothed spurge
  Euphorbia serrata f. phylloclada (Lange) O. Bolòs & Vigo -- not accepted
  Euphorbia serrata f. subacaulis (Rouy) Oudejans -- not accepted
  Euphorbia serrata f. ternata (Cout.) Oudejans -- not accepted
  Euphorbia serrata var. phylloclada Lange -- not accepted
  Euphorbia serrata var. subacaulis Rouy -- not accepted
  Euphorbia serrata var. ternata Cout. -- not accepted
  Euphorbia serrata var. truncata Pers. -- not accepted
  Euphorbia serratifolia S. Carter -- accepted
  Euphorbia serrula Engelm. -- accepted -- sawtooth sandmat
  Euphorbia serrulata Thuill. -- not accepted
  Euphorbia serrulata Vell. -- not accepted
  Euphorbia serrulata Reinw. ex Blume -- not accepted
  Euphorbia serrulata var. pubescens Warb. -- not accepted
  Euphorbia sessei Oudejans -- not accepted
  Euphorbia sessiliflora Roxb. -- accepted
  Euphorbia sessiliflora Boiss. & Spruner -- not accepted
  Euphorbia sessilifolia Klotzsch ex Boiss. -- accepted
  Euphorbia seticornis Poir. -- not accepted
  Euphorbia setigera E. Mey. -- not accepted
  Euphorbia setiloba Engelm. ex Torr. -- accepted -- Yuma sandmat, fringed spurge, shaggy spurge
  Euphorbia setiloba var. dentata Engelm. ex Boiss. -- not accepted
  Euphorbia setiloba var. nodulosa Jeps. -- not accepted
  Euphorbia setispina S. Carter -- accepted
  Euphorbia setosa (Boiss.) Müll. Arg. -- accepted
  Euphorbia sewerzowii (Prokh.) Pavlov -- accepted
  Euphorbia sexangularis Henckel -- not accepted
  Euphorbia shaferi (Millsp.) L.G. Gonzáles & Bisse -- not accepted
  Euphorbia sharkoensis Baill. -- accepted
  Euphorbia sharmae U.C. Bhattach. -- accepted
  Euphorbia shebeliensis (M.G. Gilbert) Bruyns -- accepted
  Euphorbia shetoensis Pax & K. Hoffm. -- not accepted
  Euphorbia shirensis Baker f. -- not accepted
  Euphorbia shouanensis H. Keng -- not accepted
  Euphorbia sibirica Fisch. ex Boiss. -- not accepted
  Euphorbia sibthorpii Boiss. -- not accepted
  Euphorbia sieboldiana C. Morren & Decne. -- accepted
  Euphorbia sieboldiana f. peninsularis Hurus. -- not accepted
  Euphorbia sieboldiana f. sylvatica Hurus. -- not accepted
  Euphorbia sieboldiana var. grandifolia (Franch. & Sav. ex Hurus.) Oudejans -- not accepted
  Euphorbia sieboldiana var. idzuensis (Nakai ex Hurus.) Oudejans -- not accepted
  Euphorbia sieboldiana var. montana Tatew. -- not accepted
  Euphorbia sieboldiana var. ohsumiensis (Hurus.) Hatus. -- not accepted
  Euphorbia sieboldiana var. peninsularis (Hurus.) Kitag. -- not accepted
  Euphorbia sieboldiana var. sylvatica (Hurus.) Oudejans -- not accepted
  Euphorbia siguatepequensis Standl. -- not accepted
  Euphorbia sikkimensis Boiss. -- accepted
  Euphorbia sikkimensis ssp. bhutanica Fisch. -- not accepted
  Euphorbia silenifolia (Haw.) Sweet -- accepted
  Euphorbia siliciicola Dinter -- not accepted
  Euphorbia similiramea S. Carter -- accepted
  Euphorbia similis A. Berger -- not accepted
  Euphorbia simplex K. Koch -- not accepted
  Euphorbia simulans (L.C. Wheeler) Warnock & M.C. Johnst. -- accepted -- mimicking sandmat, similar spurge
  Euphorbia sinaica Hochst. ex Boiss. -- not accepted
  Euphorbia sinaloensis Brandegee -- accepted
  Euphorbia sinanensis (Hurus.) T. Kuros. & H. Ohashi -- not accepted
  Euphorbia sinclairiana Benth. -- accepted
  Euphorbia sinensis Jesson & Turrill -- not accepted
  Euphorbia sintenisii Boiss. ex Freyn -- accepted
  Euphorbia sipolisii N.E. Br. -- accepted
  Euphorbia sistanica Dinelli & De Marco -- not accepted
  Euphorbia skottsbergii Sherff -- accepted -- coastal sandmat
  Euphorbia skottsbergii var. audens Sherff -- not accepted
  Euphorbia skottsbergii var. kalaeloana Sherff -- not accepted
  Euphorbia skottsbergii var. skottsbergii Sherff -- accepted -- coastal sandmat
  Euphorbia skottsbergii var. typica Sherff -- not accepted
  Euphorbia skottsbergii var. vaccinioides Sherff -- accepted -- coastal sandmat
  Euphorbia sloanei L.C. Wheeler -- not accepted
  Euphorbia smallii Oudejans -- not accepted
  Euphorbia smirnovii Geltman -- accepted
  Euphorbia smithii S. Carter -- accepted
  Euphorbia socialis Zoll. -- not accepted
  Euphorbia socotrana Balf. f. -- accepted
  Euphorbia socotrana ssp. purpurea N. Kilian & P. Hein -- accepted
  Euphorbia socotrana ssp. socotrana Balf. f. -- accepted
  Euphorbia sogdiana Popov -- accepted
  Euphorbia sojakii (Chrtek & Krísa) Dubovik -- accepted
  Euphorbia soliflora Vis. ex Boiss. -- not accepted
  Euphorbia solisequa Rchb. -- not accepted
  Euphorbia somalensis Pax -- accepted
  Euphorbia somalensis var. nogalensis A. Hässl. -- not accepted
  Euphorbia songweana S. Carter -- accepted
  Euphorbia sonorae Rose -- accepted
  Euphorbia soobyi McVaugh -- accepted
  Euphorbia soongarica Boiss. -- accepted
  Euphorbia soongarica Hayek -- not accepted
  Euphorbia soongarica ssp. lamprocarpa (Prokh.) Prokh. -- not accepted
  Euphorbia sororia Schrenk -- accepted
  Euphorbia sparrmanii Boiss. -- accepted
  Euphorbia sparsiflora A. Heller -- accepted -- Wahiawa bog sandmat
  Euphorbia sparsiglandulosa Ponert -- accepted
  Euphorbia spartaria N.E. Br. -- accepted
  Euphorbia spartiformis Mobayen -- accepted
  Euphorbia spartioides Jacq. -- not accepted
  Euphorbia spathulata Lam. -- accepted -- roughpod spurge, warty spurge
  Euphorbia spathulata var. mexicana (Engelm.) Oudejans -- not accepted
  Euphorbia speciosa L.C. Leach -- accepted
  Euphorbia specksii Rauh -- accepted
  Euphorbia spectabilis (S. Carter) Bruyns -- accepted
  Euphorbia spellenbergiana Mayfield & V.W. Steinm. -- accepted
  Euphorbia sphaerococca Salzm. ex Rchb. -- not accepted
  Euphorbia sphaerorhiza Benth. -- accepted
  Euphorbia sphaerosperma Shuttlew. ex Boiss. -- not accepted
  Euphorbia spicata E. Mey. ex Boiss. -- accepted
  Euphorbia spinea N.E. Br. -- accepted
  Euphorbia spinescens Pax -- not accepted
  Euphorbia spinicapsula Rauh & Petignat -- not accepted
  Euphorbia spinidens (Prokh.) Bornm. ex Prokh. -- accepted
  Euphorbia spinosa L. -- accepted
  Euphorbia spinosa f. ligustica Fiori -- not accepted
  Euphorbia spinosa ssp. ligustica (Fiori) Pignatti -- accepted
  Euphorbia spinosa ssp. melitensis (Parl.) Nyman -- not accepted
  Euphorbia spinosa ssp. spinosa L. -- accepted
  Euphorbia spinosa var. bivonae (Steud.) Fiori -- not accepted
  Euphorbia spinosa var. brachyadenia Boiss. -- not accepted
  Euphorbia spinosa var. inermis Boiss. -- not accepted
  Euphorbia spinosa var. melitensis (Parl.) Fiori -- not accepted
  Euphorbia spinosa var. montana (Lojac.) Fiori -- not accepted
  Euphorbia spinulosa (S. Carter) Bruyns -- accepted
  Euphorbia spiralis Balf. f. -- accepted
  Euphorbia spissa Thulin -- accepted
  Euphorbia spissiflora S. Carter -- accepted
  Euphorbia splendens Bojer ex Hook. -- not accepted
  Euphorbia splendens ssp. bojeri (Hook.) Denis -- not accepted
  Euphorbia splendens var. betsileana Leandri -- not accepted
  Euphorbia splendens var. bevilaniensis (Croizat) Leandri -- not accepted
  Euphorbia splendens var. bojeri (Hook.) Costantin & Gallaud -- not accepted
  Euphorbia splendens var. breonii (Nois.) Leandri -- not accepted
  Euphorbia splendens var. hislopii (N.E. Br.) Leandri -- not accepted
  Euphorbia splendens var. imperatae Leandri -- not accepted
  Euphorbia splendens var. tananarivae Leandri -- not accepted
  Euphorbia splendens var. vulcani Leandri -- not accepted
  Euphorbia spongiosa Ledeb. ex Schrank -- not accepted
  Euphorbia spruceana Boiss. -- accepted
  Euphorbia squamigera Loisel. -- accepted
  Euphorbia squamigera ssp. clementei (Boiss.) Losa & Vindt -- not accepted
  Euphorbia squamigera ssp. margalidiana (Kuhbier & Lewej.) O. Bolòs & Vigo -- not accepted
  Euphorbia squamigera var. carthaginiensis (Porta & Rigo) O. Bolòs & Vigo -- not accepted
  Euphorbia squamigera var. faurei Maire -- not accepted
  Euphorbia squamigera var. mentagensis Maire -- not accepted
  Euphorbia squamigera var. montgoi O. Bolòs & Vigo -- not accepted
  Euphorbia squamigera var. pseudatlantica Maire -- not accepted
  Euphorbia squamigera var. rupicola (Boiss.) Maire -- not accepted
  Euphorbia squamosa Willd. -- accepted
  Euphorbia squamosa var. serrata (Boiss.) Oudejans -- not accepted
  Euphorbia squamosa var. talyschensis (Boiss. & Buhse) Oudejans -- not accepted
  Euphorbia squamosa var. wilhelmsiana (K. Koch) Oudejans -- not accepted
  Euphorbia squarrosa Haw. -- not accepted
  Euphorbia standleyi (Millsp.) Oudejans -- accepted
  Euphorbia stanfieldii (Small) Cory -- not accepted
  Euphorbia stapelioides Boiss. -- accepted
  Euphorbia stapfii A. Berger -- accepted
  Euphorbia stegmatica Nel -- not accepted
  Euphorbia stellata Willd. -- accepted
  Euphorbia stellispina Haw. -- accepted
  Euphorbia stellulata Salzm. -- not accepted
  Euphorbia stenocaulis Bruyns -- accepted
  Euphorbia stenoclada Baill. -- accepted
  Euphorbia stenoclada ssp. ambatofinandranae (Leandri) Cremers -- accepted
  Euphorbia stenoclada ssp. stenoclada Baill. -- accepted
  Euphorbia stenomeres S.F. Blake -- not accepted
  Euphorbia stenophylla (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia stepposa Zoz -- accepted
  Euphorbia stevenii F.M. Bailey -- accepted
  Euphorbia stevensii A. Stewart -- not accepted
  Euphorbia steyermarkii Standl. -- not accepted
  Euphorbia stictospora Engelm. -- accepted -- slimseed sandmat, mat spurge, narrow-seeded spurge
  Euphorbia stictospora var. stictospora Engelm. -- accepted
  Euphorbia stictospora var. sublaevis M.C. Johnst. -- accepted
  Euphorbia stipitata Millsp. -- not accepted
  Euphorbia stipulacea Engelm. ex Boiss. -- not accepted
  Euphorbia stocksiana Boiss. -- not accepted
  Euphorbia stocksiana var. ovata Boiss. -- not accepted
  Euphorbia stoddartii Fosberg -- accepted
  Euphorbia stokesii C.N. Forbes -- not accepted
  Euphorbia stolonifera Marloth ex A.C. White, R.A. Dyer & B. Sloane -- accepted
  Euphorbia stormiae Croizat -- not accepted
  Euphorbia stracheyi Boiss. -- accepted
  Euphorbia strangulata N.E. Br. -- accepted
  Euphorbia striata Thunb. -- accepted
  Euphorbia striata Boiss. -- not accepted
  Euphorbia striata var. brachyphylla Boiss. -- not accepted
  Euphorbia striata var. cuspidata Boiss. -- accepted
  Euphorbia striata var. striata Thunb. -- accepted
  Euphorbia striatella Boiss. -- not accepted
  Euphorbia striatella var. microsciadia (Boiss.) Boiss. -- not accepted
  Euphorbia striatella var. persepolitana (Boiss.) Boiss. -- not accepted
  Euphorbia stricta L. -- accepted
  Euphorbia stricta f. pubescens (Erdner) Oudejans -- not accepted
  Euphorbia stricta ssp. micrantha (Stephan ex Willd.) Nyman -- not accepted
  Euphorbia stricta var. dubia (Dierb.) Nyman -- not accepted
  Euphorbia stricta var. pubescens Erdner -- not accepted
  Euphorbia strictior Holz. -- accepted -- panhandle spurge
  Euphorbia strigosa Hook. & Arn. -- accepted
  Euphorbia strobilifera Dalzell -- not accepted
  Euphorbia stuhlmannii Pax -- not accepted
  Euphorbia stuhlmannii Schweinf. ex Volkens -- not accepted
  Euphorbia sturii Holuby ex Velen -- not accepted
  Euphorbia stygiana H.C. Watson -- accepted
  Euphorbia stygiana ssp. santamariae H. Schäf. -- accepted
  Euphorbia stygiana ssp. stygiana H.C. Watson -- accepted
  Euphorbia suareziana Croizat -- not accepted
  Euphorbia subamplexicaulis Kar. & Kir. -- accepted
  Euphorbia subapoda Baill. -- not accepted
  Euphorbia subcaerulea B.L. Rob. & Greenm. -- not accepted
  Euphorbia subcaerulea var. tresmariae Millsp. -- not accepted
  Euphorbia subciliata Pers. -- not accepted
  Euphorbia subcordata Ledeb. -- accepted
  Euphorbia subcordata (Klotzsch & Garcke) Schur -- not accepted
  Euphorbia subcordata var. eriophylla (Kar. & Kir.) Boiss. -- not accepted
  Euphorbia subfalcata Hiern -- not accepted
  Euphorbia subhastata Vis. & Pancic -- not accepted
  Euphorbia submamillaris (A. Berger) A. Berger -- not accepted
  Euphorbia suborbicularis Thulin -- accepted
  Euphorbia subpeltata S. Watson -- accepted
  Euphorbia subpeltatophylla Rauh -- accepted
  Euphorbia subpubens Engelm. ex S. Watson -- not accepted
  Euphorbia subreniformis S. Watson -- accepted
  Euphorbia subsalsa Hiern -- accepted
  Euphorbia subsalsa ssp. fluvialis L.C. Leach -- accepted
  Euphorbia subsalsa ssp. subsalsa Hiern -- accepted
  Euphorbia subsalsa var. kaokoensis A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia subscandens P.R.O. Bally & S. Carter -- accepted
  Euphorbia subserrata Engelm. ex Boiss. -- not accepted
  Euphorbia subterminalis N.E. Br. -- accepted
  Euphorbia subtilis (Prokh.) Prokh. -- accepted
  Euphorbia subtrifoliata Rusby -- accepted
  Euphorbia subtuberculata C.A. Mey. ex Boiss. -- not accepted
  Euphorbia subulatifolia Hurus. -- not accepted
  Euphorbia subumbellata Steud. ex Boiss. -- not accepted
  Euphorbia succedanea L.C. Wheeler -- accepted
  Euphorbia succulenta (Schweick.) Bruyns -- accepted
  Euphorbia succulenta var. congesta (P.R.O. Bally) Bruyns -- accepted
  Euphorbia succulenta var. succulenta (Schweick.) Bruyns -- accepted
  Euphorbia sudanica A. Chev. -- accepted
  Euphorbia suffruticosa Forssk. -- not accepted
  Euphorbia suffruticulosa Lecoq & Lamotte -- not accepted
  Euphorbia suffulta Bruyns -- accepted
  Euphorbia sulcata Lens ex Loisel. -- accepted
  Euphorbia sulcata Lem. ex Boiss. -- not accepted
  Euphorbia sulcata var. maroccana Molero, Rovira & Vicens -- not accepted
  Euphorbia sultan-hassei Strid, Bentzer, Bothmer, Engstrand & M.A. Gust. -- accepted
  Euphorbia sumati S. Carter -- accepted
  Euphorbia sumbawensis Boiss. -- accepted
  Euphorbia supina Raf. -- not accepted
  Euphorbia surinamensis Lanj. -- accepted
  Euphorbia susan-holmesiae Binojk. & Gopalan -- accepted
  Euphorbia susannae Marloth -- accepted
  Euphorbia suzannae-marnierae Rauh & Petignat -- accepted
  Euphorbia sventenii Marcet -- not accepted
  Euphorbia swatensis Kitam. -- not accepted
  Euphorbia sylvatica L. -- not accepted
  Euphorbia sylvatica subvar. purpurata Coss. & Germ. -- not accepted
  Euphorbia sylvatica var. minor Gaudin -- not accepted
  Euphorbia symmetrica A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Euphorbia synadenia Baill. -- not accepted
  Euphorbia synadenium Ridl. -- not accepted
  Euphorbia syncalycina Bruyns -- accepted
  Euphorbia syncameronii Bruyns -- accepted
  Euphorbia syriaca Spreng. -- not accepted
  Euphorbia syrmiensis Kit. -- not accepted
  Euphorbia syspirensis K. Koch -- not accepted
  Euphorbia systyla Edgew. -- accepted
  Euphorbia systyloides Pax -- accepted
  Euphorbia systyloides ssp. porcaticapsa S. Carter -- accepted
  Euphorbia systyloides ssp. systyloides Pax -- accepted
  Euphorbia systyloides var. hebecarpa (Pax) N.E. Br. -- not accepted
  Euphorbia systyloides var. lata N.E. Br. -- not accepted
  Euphorbia systyloides var. pedunculata N.E. Br. -- not accepted
  Euphorbia szechuanica Pax & K. Hoffm. -- not accepted
  Euphorbia szovitsii Fisch. & C.A. Mey. -- accepted
  Euphorbia szovitsii var. kharputensis Azn. ex M.S. Khan -- accepted
  Euphorbia szovitsii var. szovitsii Fisch. & C.A. Mey. -- accepted
  Euphorbia taboraensis A. Hässl. -- accepted
  Euphorbia tacnensis Phil. -- accepted
  Euphorbia taifensis Fayed & D. Al-Zahrani -- accepted -- Amaq, Amaqah, Amaqat al-ghanam
  Euphorbia taihsiensis (Chaw & Koutnik) Oudejans -- accepted
  Euphorbia taitensis Boiss. -- not accepted
  Euphorbia taitensis Pax -- not accepted
  Euphorbia taitensis var. stenhymenia Boiss. -- not accepted
  Euphorbia taiwaniana S.S. Ying -- not accepted
  Euphorbia takouensis H. Lév. & Vaniot -- not accepted
  Euphorbia talaina Radcl.-Sm. -- accepted
  Euphorbia talastavica (Prokh.) Prokh. -- accepted
  Euphorbia taluticola Wiggins -- accepted
  Euphorbia talyschensis Boiss. & Buhse -- not accepted
  Euphorbia tamanduana Boiss. -- accepted
  Euphorbia tamaulipasana (Millsp.) Oudejans -- accepted
  Euphorbia tanaensis P.R.O. Bally & S. Carter -- accepted
  Euphorbia tanaicensis Guss. -- not accepted
  Euphorbia tanaitica Pacz. -- not accepted
  Euphorbia tangutica Prokh. -- not accepted
  Euphorbia tannensis Spreng. -- accepted
  Euphorbia tannensis ssp. eremophila (A. Cunn. ex Hook.) D.C. Hassall -- accepted
  Euphorbia tannensis ssp. tannensis Spreng. -- accepted
  Euphorbia tannensis var. eremophila (A. Cunn. ex Hook.) D.C. Hassall -- not accepted
  Euphorbia tannensis var. finlaysonii (J.M. Black) D.C. Hassall -- not accepted
  Euphorbia tanquahuete Sessé & Moç. -- accepted -- Leche Maria, Palo cucaracha, Palo mulato, Palo amarillo
  Euphorbia taourirtensis Batt. & Trab. -- not accepted
  Euphorbia taquetii H. Lév. & Vaniot -- not accepted
  Euphorbia tarapacana Phil. -- accepted
  Euphorbia tardieuana Leandri -- accepted
  Euphorbia tarokoensis Hayata -- not accepted
  Euphorbia taruensis S. Carter -- accepted
  Euphorbia tashiroi Hayata -- not accepted
  Euphorbia tatarica Jacquem. ex Boiss. -- not accepted
  Euphorbia tatianae Fed. -- not accepted
  Euphorbia taurica (Besser) Steud. -- not accepted
  Euphorbia tauricola Prokh. -- accepted
  Euphorbia taurinensis All. -- accepted
  Euphorbia taurinensis f. isophylla (K. Malý) Kuzmanov -- not accepted
  Euphorbia taurinensis var. brachyceras (Candargy) Oudejans -- not accepted
  Euphorbia taurinensis var. isophylla (K. Malý) Oudejans -- not accepted
  Euphorbia tavoyensis N.P. Balakr. -- accepted
  Euphorbia taxifolia Burm. f. -- not accepted
  Euphorbia tchen-ngoi (Soják) Radcl.-Sm. -- not accepted
  Euphorbia teheranica Boiss. -- accepted
  Euphorbia tehuacana (Brandegee) V.W. Steinm. -- accepted
  Euphorbia teixeirae L.C. Leach -- accepted
  Euphorbia teke Schweinf. ex Pax -- accepted
  Euphorbia telephioides Chapm. -- accepted -- Telephus spurge
  Euphorbia tenax Burch. -- accepted
  Euphorbia tenella Pax -- not accepted
  Euphorbia tenella Kunth -- not accepted
  Euphorbia tenera S. Watson -- not accepted
  Euphorbia tenuicaulis Range -- not accepted
  Euphorbia tenuicuspis Guss. ex Rchb. -- not accepted
  Euphorbia tenuirama Schweinf. ex A. Berger -- accepted
  Euphorbia tenuis Buch.-Ham. ex D. Don -- not accepted
  Euphorbia tenuispinosa Gilli -- accepted
  Euphorbia tenuispinosa var. robusta P.R.O. Bally & S. Carter -- accepted
  Euphorbia tenuispinosa var. tenuispinosa Gilli -- accepted
  Euphorbia tenuissima M.E. Jones -- not accepted
  Euphorbia teres M. Machado & Hofacker -- accepted
  Euphorbia terracina L. -- accepted -- Geraldton carnation weed, Terracina spurge, carnation spurge
  Euphorbia terracina Lag. -- not accepted
  Euphorbia terracina f. angustifolia Batt. -- not accepted
  Euphorbia terracina var. alexandrina (Delile) El-Kanemy -- not accepted
  Euphorbia terracina var. delortii Timb.-Lagr. ex Nyman -- not accepted
  Euphorbia terracina var. ecarunculata Boiss. -- not accepted
  Euphorbia terracina var. mendax (Maire & Wilczek) Maire -- not accepted
  Euphorbia terracina var. modesta (Boiss.) Boiss. -- not accepted
  Euphorbia terracina var. ramosissima (Loisel.) Nyman -- not accepted
  Euphorbia terracina var. variicornis Maire & Sennen -- not accepted
  Euphorbia tescorum S. Carter -- accepted
  Euphorbia teskensuensis Orazova -- accepted
  Euphorbia tessellata (Haw.) Steud. -- not accepted
  Euphorbia tetracantha Rendle -- accepted
  Euphorbia tetracantha Pax -- not accepted
  Euphorbia tetracanthoides Pax -- accepted
  Euphorbia tetraceras Lange -- not accepted
  Euphorbia tetragona Haw. -- accepted
  Euphorbia tetrapora Engelm. -- accepted -- weak spurge
  Euphorbia tetrapora var. berlandieri Boiss. -- not accepted
  Euphorbia tetraptera Baker -- accepted
  Euphorbia tetraptera var. robusta Leandri -- accepted
  Euphorbia tetraptera var. tetraptera Baker -- accepted
  Euphorbia tettensis Klotzsch -- accepted
  Euphorbia tetuanensis Pau -- not accepted
  Euphorbia texana Boiss. -- accepted -- Texas spurge
  Euphorbia thamnoides Boiss. -- not accepted
  Euphorbia thamnoides var. hierosolymitana (Boiss.) Boiss. -- not accepted
  Euphorbia thelesperma Hochst. ex Boiss. -- not accepted
  Euphorbia theriaca L.C. Wheeler -- accepted -- Terlingua sandmat
  Euphorbia theriaca var. spurca M.C. Johnst. -- accepted -- Terlingua sandmat
  Euphorbia theriaca var. theriaca L.C. Wheeler -- accepted -- Terlingua sandmat
  Euphorbia thessala (Formánek) Degen & Dörfl. -- not accepted
  Euphorbia thi Schweinf. -- not accepted
  Euphorbia thi var. subinarticulata (Schweinf.) N.E. Br. -- not accepted
  Euphorbia thinophila Phil. -- accepted
  Euphorbia tholicola L.C. Leach -- accepted
  Euphorbia thompsonii Holmboe -- accepted
  Euphorbia thomsoniana Boiss. -- accepted
  Euphorbia thouarsiana Baill. -- accepted
  Euphorbia thulinii S. Carter -- accepted
  Euphorbia thymifolia L. -- accepted -- gulf sandmat
  Euphorbia thymifolia Forssk. -- not accepted
  Euphorbia thymifolia f. laxifoliata Chodat & Hassl. -- not accepted
  Euphorbia thymifolia var. suffrutescens Boiss. -- not accepted
  Euphorbia thyrsiflora Griseb. -- not accepted
  Euphorbia thyrsoidea Boiss. -- accepted
  Euphorbia tianshanica (Prokh.) Popov -- not accepted
  Euphorbia tiarata Mayfield -- accepted
  Euphorbia tibetica Boiss. -- accepted
  Euphorbia tigridis Boiss. -- not accepted
  Euphorbia tinctoria Boiss. & A. Huet -- not accepted
  Euphorbia tinctoria var. schizoceras (Boiss.) Boiss. -- not accepted
  Euphorbia tinianensis Hosok. -- accepted
  Euphorbia tirucalli L. -- accepted -- Indiantree spurge
  Euphorbia tisserantii A. Chev. & Sillans -- accepted -- Songowa
  Euphorbia tithymaloides L. -- accepted -- redbird flower
  Euphorbia tithymaloides ssp. angustifolia (Poit.) V.W. Steinm. -- accepted -- redbird flower
  Euphorbia tithymaloides ssp. bahamensis (Millsp.) V.W. Steinm. -- accepted
  Euphorbia tithymaloides ssp. jamaicensis (Millsp. & Britton) V.W. Steinm. -- accepted
  Euphorbia tithymaloides ssp. padifolia (L.) V.W. Steinm. -- accepted -- redbird flower
  Euphorbia tithymaloides ssp. parasitica (Boiss. ex Klotzsch & Garcke) V.W. Steinm. -- accepted -- redbird flower
  Euphorbia tithymaloides ssp. retusa (Benth.) V.W. Steinm. -- accepted
  Euphorbia tithymaloides ssp. smallii (Millsp.) V.W. Steinm. -- accepted -- Small's redbird flower
  Euphorbia tithymaloides ssp. tithymaloides L. -- accepted -- redbird flower, Pedilanthus
  Euphorbia tithymaloides var. myrtifolia L. -- not accepted
  Euphorbia tithymaloides var. padifolia L. -- not accepted
  Euphorbia togakusensis Hayata -- accepted
  Euphorbia togakusensis f. acuta Hurus. -- not accepted
  Euphorbia togakusensis f. intermedia (Hurus.) Oudejans -- not accepted
  Euphorbia togakusensis var. ozensis Hurus. -- not accepted
  Euphorbia togoensis Pax -- not accepted
  Euphorbia tomentella Engelm. ex Boiss. -- accepted
  Euphorbia tomentosa Pers. -- not accepted
  Euphorbia tomentulosa S. Watson -- accepted
  Euphorbia tommasiniana Bertol. -- not accepted
  Euphorbia tongchuanensis C.Y. Wu & J.S. Ma -- accepted
  Euphorbia torralbasii Urb. -- accepted
  Euphorbia torrei (L.C. Leach) Bruyns -- accepted
  Euphorbia torrida DC. -- not accepted
  Euphorbia torta Pax & K. Hoffm. -- accepted
  Euphorbia tortilis Rottler ex Ainslie -- accepted
  Euphorbia tortirama R.A. Dyer -- accepted
  Euphorbia tortistyla N.E. Br. -- accepted
  Euphorbia tovarensis Boiss. -- not accepted
  Euphorbia toxicaria Afzel. ex Steud. -- not accepted
  Euphorbia trachycarpa Pax -- not accepted
  Euphorbia trachyphylla A. Rich. -- not accepted
  Euphorbia trachysperma Engelm. -- accepted -- San Pedro River sandmat
  Euphorbia trancapatae (Croizat) J.F. Macbr. -- accepted
  Euphorbia transoxana (Prokh.) Prokh. -- accepted
  Euphorbia transsilvanica Schur -- not accepted
  Euphorbia transtagana Boiss. -- accepted
  Euphorbia transvaalensis Schltr. -- accepted
  Euphorbia trapezoidalis Boiss. -- not accepted
  Euphorbia trapezoidalis Viv. -- not accepted
  Euphorbia trapiifolia A. Chev. -- not accepted
  Euphorbia tresmariae (Millsp.) Standl. -- accepted
  Euphorbia triacantha Ehrenb. ex Boiss. -- not accepted
  Euphorbia triaculeata Forssk. -- accepted
  Euphorbia trialata (Huft) V.W. Steinm. -- accepted
  Euphorbia triangolensis Bruyns -- accepted
  Euphorbia triangularis Desf. ex A. Berger -- accepted
  Euphorbia tribuloides Lam. -- not accepted
  Euphorbia trichadenia Pax -- accepted
  Euphorbia trichadenia var. gibbsiae N.E. Br. -- accepted
  Euphorbia trichadenia var. trichadenia Pax -- accepted
  Euphorbia trichiocyma S. Carter -- accepted
  Euphorbia trichocardia L.B. Sm. -- not accepted
  Euphorbia trichogona Bertol. -- not accepted
  Euphorbia trichophylla Baker -- accepted
  Euphorbia trichotoma Kunth -- accepted -- sanddune spurge, sand dune spurge
  Euphorbia trichotoma var. macilenta Millsp. -- not accepted
  Euphorbia tricolor Greenm. -- accepted
  Euphorbia tricuspidata Lapeyr. -- not accepted
  Euphorbia tridentata Lam. -- accepted
  Euphorbia triflora Schott, Nyman & Kotschy -- accepted
  Euphorbia triflora Sessé & Moç. -- not accepted
  Euphorbia triflora ssp. kerneri (Huter ex A. Kern.) Poldini -- not accepted
  Euphorbia trigona Mill. -- accepted
  Euphorbia trigona Roxb. -- not accepted
  Euphorbia trigonocarpa Fisch. -- not accepted
  Euphorbia trinervia Schumach. & Thonn. -- not accepted
  Euphorbia trinervia Boiss. -- not accepted
  Euphorbia trinervis Bertol. -- not accepted
  Euphorbia triodonta (Prokh.) Prokh. -- accepted
  Euphorbia tripartita S. Carter -- accepted
  Euphorbia triphylla Willd. ex Klotzsch & Garcke -- not accepted
  Euphorbia triphylla (Klotzsch & Garcke) Oudejans -- not accepted
  Euphorbia tristis Besser -- accepted
  Euphorbia triumfetti Bertol. -- not accepted
  Euphorbia troodii Post -- not accepted
  Euphorbia troyana Urb. -- not accepted
  Euphorbia truncata N.E. Br. -- not accepted
  Euphorbia truncata (Pers.) Loudon -- not accepted
  Euphorbia tshuiensis (Prokh.) Serg. ex Krylov -- accepted
  Euphorbia tsimbazazae Leandri -- accepted
  Euphorbia tsukamotoi Honda -- not accepted
  Euphorbia tubadenia Mayfield ex Ya Yang -- accepted
  Euphorbia tuberifera N.E. Br. -- accepted
  Euphorbia tuberosa L. -- accepted
  Euphorbia tuckeyana Steud. ex Webb -- accepted
  Euphorbia tuckeyana var. mezereum A. Chev. -- not accepted
  Euphorbia tuerckheimii Urb. -- accepted
  Euphorbia tulearensis (Rauh) Rauh -- accepted
  Euphorbia tumistyla (D.G. Burch) Radcl.-Sm. -- accepted
  Euphorbia tunetana (Murb.) Vierh. ex Buxb. -- not accepted
  Euphorbia turbiniformis Chiov. -- accepted
  Euphorbia turcomanica Boiss. -- not accepted
  Euphorbia turcomanica var. tigridis Boiss. -- not accepted
  Euphorbia turczaninowii Kar. & Kir. -- accepted
  Euphorbia turkanensis S. Carter -- accepted
  Euphorbia turkestanica Regel -- accepted
  Euphorbia turkestanica Franch. -- not accepted
  Euphorbia turolensis Sennen & Pau -- not accepted
  Euphorbia turpinii Boiss. -- accepted -- Turpin's sandmat
  Euphorbia ugandensis Pax & K. Hoffm. -- accepted
  Euphorbia uhehensis Pax -- not accepted
  Euphorbia uhligiana Pax -- accepted
  Euphorbia uliginosa Welw. ex Boiss. -- accepted
  Euphorbia umbellata (Pax) Bruyns -- accepted
  Euphorbia umbelliformis (Urb. & Ekman) V.W. Steinm. & P.E. Berry -- accepted
  Euphorbia umbellulata Engelm. ex Boiss. -- accepted
  Euphorbia umbellulata var. major Millsp. -- not accepted
  Euphorbia umbonata S. Carter -- accepted
  Euphorbia umbrosa Bertero ex Spreng. -- accepted
  Euphorbia umfoloziensis Peckover -- accepted
  Euphorbia uncinata DC. -- not accepted
  Euphorbia undulata M. Bieb. -- accepted
  Euphorbia undulata Schweigg. -- not accepted
  Euphorbia undulatifolia Janse -- accepted
  Euphorbia unicornis R.A. Dyer -- accepted
  Euphorbia uniflora Roxb. -- not accepted
  Euphorbia uniflora (Haw.) G. Don -- not accepted
  Euphorbia uniglandulosa S. Watson -- not accepted
  Euphorbia uniglans M.G. Gilbert -- accepted
  Euphorbia unilateralis Blakelock -- not accepted
  Euphorbia unispina N.E. Br. -- accepted
  Euphorbia uralensis Fisch. ex Link -- accepted
  Euphorbia urbanii (Millsp.) Oudejans -- not accepted
  Euphorbia usambarica Pax -- accepted
  Euphorbia usambarica ssp. elliptica Pax -- accepted
  Euphorbia usambarica ssp. usambarica Pax -- accepted
  Euphorbia ussanguensis N.E. Br. -- not accepted
  Euphorbia uzmuk S. Carter & J.R.I. Wood -- accepted
  Euphorbia vaalputsiana L.C. Leach -- accepted
  Euphorbia vaccaria Baill. -- not accepted
  Euphorbia vachellii Hook. & Arn. -- not accepted
  Euphorbia vachellii var. pubescens (Warb.) Oudejans -- not accepted
  Euphorbia vaginulata Griseb. -- accepted
  Euphorbia vahliana Guss. -- not accepted
  Euphorbia vahlii Jacq. -- not accepted
  Euphorbia vajravelui Binojk. & N.P. Balakr. -- accepted
  Euphorbia valdevillosocarpa Arvat & Nyár. -- accepted
  Euphorbia valentina Ortega -- not accepted
  Euphorbia valerianae Pers. -- not accepted
  Euphorbia valerianifolia Lam. -- accepted
  Euphorbia valerii Standl. -- not accepted
  Euphorbia valida N.E. Br. -- not accepted
  Euphorbia vallaris L.C. Leach -- accepted
  Euphorbia valliniana Belli -- accepted
  Euphorbia vallis-mortae (Millsp.) J.T. Howell -- accepted -- Death Valley sandmat
  Euphorbia vandermerwei R.A. Dyer -- accepted
  Euphorbia variabilis Ces. -- accepted
  Euphorbia variabilis ssp. valliniana (Belli) Jauzein -- not accepted
  Euphorbia variabilis ssp. variabilis Ces. -- accepted
  Euphorbia varians Haw. -- accepted
  Euphorbia variegata Deflers -- not accepted
  Euphorbia variegata B. Heyne ex Roth -- not accepted
  Euphorbia variegata Sims -- not accepted
  Euphorbia vaseyi J.M. Coult. -- not accepted
  Euphorbia vaticana (Gand.) Gand. -- not accepted
  Euphorbia vauthieriana Boiss. -- accepted
  Euphorbia velenovskyi Bornm. -- accepted
  Euphorbia velleriflora (Klotzsch & Garcke) Boiss. -- accepted -- Caliche sandmat
  Euphorbia velligera S. Schauer -- accepted
  Euphorbia velutina Pax -- not accepted
  Euphorbia velutina K. Schum. -- not accepted
  Euphorbia velutina Greene -- not accepted
  Euphorbia venefica Tremaux ex Kotschy -- accepted
  Euphorbia venenata Schltdl. -- not accepted
  Euphorbia veneris M.S. Khan -- accepted
  Euphorbia veneta Willd. -- not accepted
  Euphorbia venteri L.C. Leach ex R.H. Archer & S. Carter -- accepted
  Euphorbia ventosica Chaix ex Timb.-Lagr. -- not accepted
  Euphorbia vepretorum Drake -- not accepted
  Euphorbia verapazensis Standl. & Steyerm. -- accepted
  Euphorbia verdickii De Wild. -- not accepted
  Euphorbia vermiculata Raf. -- accepted -- wormseed sandmat, wormseed spurge
  Euphorbia vermiformis M.E. Jones -- not accepted
  Euphorbia verna Salzm. ex Ball -- not accepted
  Euphorbia verrucosa L. -- accepted
  Euphorbia verrucosa Lam. -- not accepted
  Euphorbia verrucosa f. montana (Gaudin) Oudejans -- not accepted
  Euphorbia verrucosa f. velutina (Boiss.) Oudejans -- not accepted
  Euphorbia verrucosa f. viridis (Erdner) Oudejans -- not accepted
  Euphorbia verrucosa var. flavescens Benth. -- not accepted
  Euphorbia verrucosa var. montana Gaudin -- not accepted
  Euphorbia verrucosa var. montenegrina Bald. -- not accepted
  Euphorbia verrucosa var. velutina Boiss. -- not accepted
  Euphorbia verrucosa var. viridis Erdner -- not accepted
  Euphorbia verruculosa N.E. Br. -- accepted
  Euphorbia versicolor Greene -- not accepted
  Euphorbia verticillata Fisch. -- not accepted
  Euphorbia verticillata Vell. -- not accepted
  Euphorbia verticillata Poir. -- not accepted
  Euphorbia vervoorstii Subils -- accepted
  Euphorbia vestita Boiss. -- accepted
  Euphorbia vezorum Leandri -- accepted
  Euphorbia viduiflora L.C. Leach -- accepted
  Euphorbia vieillardii Baill. -- not accepted
  Euphorbia viguieri Denis -- accepted
  Euphorbia viguieri var. ankarafantsiensis Ursch & Leandri -- accepted
  Euphorbia viguieri var. capuroniana Ursch & Leandri -- accepted
  Euphorbia viguieri var. tsimbazazae Ursch & Leandri -- accepted
  Euphorbia viguieri var. viguieri Denis -- accepted
  Euphorbia viguieri var. vilanandrensis Ursch & Leandri -- accepted
  Euphorbia villifera W.T. Wang -- not accepted
  Euphorbia villifera var. crepuscula L.C. Wheeler -- not accepted
  Euphorbia villifera var. nuda Engelm. ex Boiss. -- not accepted
  Euphorbia villifera var. typica L.C. Wheeler -- not accepted
  Euphorbia villosa Waldst. & Kit. ex Willd. -- not accepted
  Euphorbia villosa Friv. ex Boiss. -- not accepted
  Euphorbia villosa ssp. austriaca (A. Kern.) Soó -- not accepted
  Euphorbia villosa ssp. semivillosa (Prokh.) Oudejans -- not accepted
  Euphorbia villosa ssp. valdevillosocarpa (Arvat & Nyár.) Soó -- not accepted
  Euphorbia villosa var. longifolia (Rouy) O. Bolòs & Vigo -- not accepted
  Euphorbia villosissima Klotzsch ex Boiss. -- not accepted
  Euphorbia villosula Pax -- not accepted
  Euphorbia villosula Urb. -- not accepted
  Euphorbia viminalis Mill. -- not accepted
  Euphorbia viminea Hook. f. -- accepted
  Euphorbia viminea var. abingdonensis B.L. Rob. & Greenm. -- not accepted
  Euphorbia vinyalsii Sennen -- not accepted
  Euphorbia violacea Greenm. -- accepted
  Euphorbia viperina A. Berger -- not accepted
  Euphorbia virgata Waldst. & Kit. -- accepted -- leafy spurge
  Euphorbia virgata Desf. -- not accepted
  Euphorbia virgata f. esulifolia Thell. -- not accepted
  Euphorbia virgata ssp. orientalis (Boiss.) Velen. -- not accepted
  Euphorbia virgata ssp. regis-jubae (Webb & Berthel.) Soldana -- not accepted
  Euphorbia virgata ssp. tommasiniana (Bertol.) Nyman -- not accepted
  Euphorbia virgata var. kitagawae Hurus. -- not accepted
  Euphorbia virgata var. montana Rchb. -- not accepted
  Euphorbia virgata var. orientalis Boiss. -- not accepted
  Euphorbia virgata var. uralensis (Fisch. ex Link) Boiss. -- not accepted
  Euphorbia virgultosa Klokov -- not accepted
  Euphorbia viridiflora Waldst. & Kit. -- not accepted
  Euphorbia viridis (Klotzsch & Garcke) Boiss. -- accepted
  Euphorbia viridula Cordem. ex Radcl.-Sm. -- accepted
  Euphorbia virosa Willd. -- accepted
  Euphorbia virosa ssp. arenicola L.C. Leach -- accepted
  Euphorbia virosa ssp. virosa Willd. -- accepted
  Euphorbia viscoides Boiss. -- accepted
  Euphorbia vitellina Loscos & Pardo -- not accepted
  Euphorbia vittata S. Carter -- accepted
  Euphorbia volgensis Krysht. -- not accepted
  Euphorbia volhynica Besser ex Racib. -- not accepted
  Euphorbia volkensii Pax -- not accepted
  Euphorbia volkensii Werth -- not accepted
  Euphorbia volkii Rech. f. -- not accepted
  Euphorbia volkmanniae Dinter -- accepted
  Euphorbia vulcanorum S. Carter -- accepted
  Euphorbia wahlbergii Boiss. -- not accepted
  Euphorbia wakefieldii N.E. Br. -- accepted
  Euphorbia waldsteinii (Soják) Radcl.-Sm. -- not accepted
  Euphorbia waldsteinii ssp. jaxartica (Prokh.) Oudejans -- not accepted
  Euphorbia waldsteinii ssp. orientalis (Boiss.) Oudejans -- not accepted
  Euphorbia waldsteinii ssp. saratoi (Ardoino) Oudejans -- not accepted
  Euphorbia wallichiana Boiss. -- not accepted
  Euphorbia wallichii Hook. f. -- accepted
  Euphorbia wallichii ssp. duclouxii (H. Lév. & Vaniot) B.L. Turner -- not accepted
  Euphorbia wangii Oudejans -- not accepted
  Euphorbia waringiae Rauh & Gerold -- accepted
  Euphorbia watanabei Makino -- accepted
  Euphorbia watanabei ssp. minamitanii T. Kuros., Seriz. & H. Ohashi -- accepted
  Euphorbia watanabei ssp. watanabei Makino -- accepted
  Euphorbia waterbergensis R.A. Dyer -- accepted
  Euphorbia watsonii Millsp. -- not accepted
  Euphorbia weberbaueri Mansf. -- accepted
  Euphorbia wellbyi N.E. Br. -- accepted
  Euphorbia wellbyi var. glabra S. Carter -- accepted
  Euphorbia wellbyi var. wellbyi N.E. Br. -- accepted
  Euphorbia welwitschii Boiss. & Reut. -- not accepted
  Euphorbia welwitschii var. euwelwitschii Maire -- not accepted
  Euphorbia welwitschii var. puberula Emb. -- not accepted
  Euphorbia welwitschii var. ramosissima Daveau -- not accepted
  Euphorbia wheeleri Baill. -- accepted
  Euphorbia whellanii L.C. Leach -- accepted
  Euphorbia whitei L.C. Wheeler -- accepted
  Euphorbia whyteana Baker f. -- accepted
  Euphorbia wightiana Boiss. -- not accepted
  Euphorbia wightiana Hook. f. -- not accepted
  Euphorbia wildii L.C. Leach -- accepted
  Euphorbia williamsonii L.C. Leach -- accepted
  Euphorbia wilmaniae Marloth -- accepted
  Euphorbia wilsonii (Millsp.) Correll -- not accepted
  Euphorbia wilsonii V. Vlk -- not accepted
  Euphorbia winkleri Pax -- not accepted
  Euphorbia wittmannii Boiss. -- accepted
  Euphorbia woodii N.E. Br. -- not accepted
  Euphorbia wootonii Oudejans -- not accepted -- Wooton's spurge
  Euphorbia woronowii Grossh. -- not accepted
  Euphorbia wrightii Torr. & A. Gray -- accepted -- Wright's spurge
  Euphorbia wulfenii Hoppe ex W. Koch -- not accepted
  Euphorbia X ambohipotsiensis Ursch & Leandri -- accepted
  Euphorbia X andrefandrovana Ursch & Leandri -- accepted
  Euphorbia X angustata (Rochel) Simonk. -- accepted
  Euphorbia X angustifrons Borbás -- accepted
  Euphorbia X anticaffra Lotsy & Goddijn -- not accepted
  Euphorbia X balfourii Sennen -- accepted
  Euphorbia X bazargica Prodán -- accepted
  Euphorbia X bothae Lotsy & Goddijn -- accepted
  Euphorbia X budensis T. Simon -- accepted
  Euphorbia X cornubiensis Radcl.-Sm. -- not accepted
  Euphorbia X csatoi (Simonk.) Borza -- accepted
  Euphorbia X esulolucida Andrae -- not accepted
  Euphorbia X figertii Dörfl. -- not accepted
  Euphorbia X gayeri Borós & Soó -- accepted
  Euphorbia X ingezalahiana Ursch & Leandri -- accepted
  Euphorbia X jablonskiana Polatschek -- accepted
  Euphorbia X jubaeaphylla Svent. -- accepted
  Euphorbia X lomi Rauh -- accepted
  Euphorbia X macinensis Prodán -- accepted
  Euphorbia X malahidensis Radcl.-Sm. -- not accepted
  Euphorbia X marreroi Molero & Rovira -- accepted
  Euphorbia X martinii Rouy -- accepted
  Euphorbia X mitsimbinensis Ursch & Leandri -- accepted
  Euphorbia X navae Svent. -- accepted
  Euphorbia X nyaradyana Prodán -- accepted
  Euphorbia X paradoxa (Schur) Simonk. -- accepted
  Euphorbia X peisonis Rech. f. -- accepted
  Euphorbia X petterssonii Svent. -- accepted
  Euphorbia X popovii Rotschild -- accepted
  Euphorbia X procopianii Savul. & Rayss -- accepted
  Euphorbia X pseudoesula Schur -- accepted
  Euphorbia X pseudolucida Schur -- accepted
  Euphorbia X pseudovillosa Prodán -- accepted
  Euphorbia X soanieranensis Ursch & Leandri -- accepted
  Euphorbia X somboriensis Prodán -- accepted
  Euphorbia X sooi T. Simon -- accepted
  Euphorbia X souliei Sennen -- accepted
  Euphorbia X stenocalli Croizat -- accepted
  Euphorbia X uniflora Raf. -- accepted
  Euphorbia X wagneri Soó -- accepted
  Euphorbia X wimmeriana J. Wagner -- accepted
  Euphorbia X zanaharensis Ursch & Leandri -- accepted
  Euphorbia xalapensis Kunth -- accepted
  Euphorbia xalapensis var. valida Hochr. -- not accepted
  Euphorbia xanthadenia Denis -- not accepted
  Euphorbia xanti Engelm. ex Boiss. -- accepted
  Euphorbia xbacensis Millsp. -- accepted
  Euphorbia xeropoda Brandegee -- not accepted
  Euphorbia xylacantha Pax -- accepted
  Euphorbia xylophylloides Brongn. ex Lem. -- accepted
  Euphorbia xylopoda Greenm. -- accepted
  Euphorbia yamashitae Kitam. -- not accepted
  Euphorbia yanjinensis W.T. Wang -- accepted
  Euphorbia yaquiana Tidestr. -- accepted -- Hairy Mojave spurge
  Euphorbia yaroslavii Poljakov -- accepted
  Euphorbia yattana (P.R.O. Bally) Bruyns -- accepted
  Euphorbia yayalesia Urb. -- not accepted
  Euphorbia yemenica Boiss. -- not accepted
  Euphorbia yinshanica S.Q. Zhou & G.H. Liu -- not accepted
  Euphorbia yucatanensis (Millsp.) Standl. -- accepted
  Euphorbia yunnanensis Radcl.-Sm. -- not accepted
  Euphorbia zahnii Heldr. ex Halácsy -- not accepted
  Euphorbia zakamenae Leandri -- accepted
  Euphorbia zambesiana Benth. -- accepted
  Euphorbia zambesiana var. benguelensis (Pax) N.E. Br. -- not accepted
  Euphorbia zambesiana var. villosula (Pax) N.E. Br. -- not accepted
  Euphorbia zenkeri Pax -- not accepted
  Euphorbia zeylana N.E. Br. -- not accepted
  Euphorbia zhiguliensis (Prokh.) Prokh. -- not accepted
  Euphorbia zierioides Boiss. -- accepted
  Euphorbia zinniiflora Small -- not accepted
  Euphorbia zonosperma Müll. Arg. -- accepted
  Euphorbia zornioides Boiss. -- not accepted
  Euphorbia zoutpansbergensis R.A. Dyer -- accepted
  Euphorbia zygophylloides Boiss. -- not accepted
  Euphorbia zygophylloides var. cymulosa Engelm. ex Boiss. -- not accepted
  Euphorbia zygophylloides var. flagelliformis (Engelm.) Boiss. -- not accepted
  Euphorbiaceae -- accepted -- spurge, euphorbes
  Euphorbiastrum Klotzsch & Garcke -- not accepted
  Euphorbiastrum hoffmannianum Klotzsch & Garcke -- not accepted
  Euphorbiodendron Millsp. -- not accepted
  Euphorbiodendron calyculatum (Kunth) Millsp. -- not accepted
  Euphorbiodendron cestrifolium (Kunth) Millsp. -- not accepted
  Euphorbiodendron cubense (Boiss.) Millsp. -- not accepted
  Euphorbiodendron dussii (Krug & Urb. ex Duss) Millsp. -- not accepted
  Euphorbiodendron fulvum (Stapf) Millsp. -- not accepted
  Euphorbiodendron goudotii (Boiss.) Millsp. -- not accepted
  Euphorbiodendron gymnonotum (Urb.) Millsp. -- not accepted
  Euphorbiodendron helenae (Urb.) Millsp. -- not accepted
  Euphorbiodendron latazi (Kunth) Millsp. -- not accepted
  Euphorbiodendron laurifolium (Juss. ex Lam.) Millsp. -- not accepted
  Euphorbiodendron puniceum (Sw.) Millsp. -- not accepted
  Euphorbiodendron shaferi Millsp. -- not accepted
  Euphorbiodendron sinclairianum (Benth.) Millsp. -- not accepted
  Euphorbiodendron troyanum (Urb.) Millsp. -- not accepted
  Euphorbion St.-Lag. -- not accepted
  Euphorbion anacampserum (Boiss.) St.-Lag. -- not accepted
  Euphorbion apium (L.) St.-Lag. -- not accepted
  Euphorbion dendroideum (L.) St.-Lag. -- not accepted
  Euphorbion esulum (L.) St.-Lag. -- not accepted
  Euphorbion helioscopium (L.) St.-Lag. -- not accepted
  Euphorbion lathyrum (L.) St.-Lag. -- not accepted
  Euphorbion myrsinitum (L.) St.-Lag. -- not accepted
  Euphorbion paralium (L.) St.-Lag. -- not accepted
  Euphorbion peplum (L.) St.-Lag. -- not accepted
  Euphorbium Hill -- not accepted
  Furcaria boiviniana Baill. -- not accepted
  Galarhoeus Haw. -- not accepted
  Galarhoeus adenochlorus (C. Morren & Decne.) H. Hara -- not accepted
  Galarhoeus alatavicus (Boiss.) Prokh. -- not accepted
  Galarhoeus aleppicus (L.) Haw. -- not accepted
  Galarhoeus altotibeticus (Paulsen) Prokh. -- not accepted
  Galarhoeus andrachnoides (Schrenk) Prokh. -- not accepted
  Galarhoeus androsaemifolius Haw. -- not accepted
  Galarhoeus apios (L.) Haw. -- not accepted
  Galarhoeus arkansanus (Engelm. & A. Gray) Small ex Rydb. -- not accepted
  Galarhoeus austrinus (Small) Small -- not accepted
  Galarhoeus borodinii (Sambuk) Prokh. -- not accepted
  Galarhoeus buhsei (Boiss.) Prokh. -- not accepted
  Galarhoeus caesius (Kar. & Kir.) Hurus. -- not accepted
  Galarhoeus calonesiacus (Croizat) H. Hara -- not accepted
  Galarhoeus carniolicus (Jacq.) Haw. -- not accepted
  Galarhoeus commutatus (Engelm. ex A. Gray) Small ex Rydb. -- not accepted
  Galarhoeus commutatus var. erectus (Norton) Small -- not accepted
  Galarhoeus corallioides (L.) Haw. -- not accepted
  Galarhoeus corollatus (L.) Haw. -- not accepted
  Galarhoeus creticus (Mill.) Haw. -- not accepted
  Galarhoeus croizatii Hurus. -- not accepted
  Galarhoeus cyparissias (L.) Small ex Rydb. -- not accepted
  Galarhoeus darlingtonii (A. Gray) Small -- not accepted
  Galarhoeus decussatus (Salisb.) Gray -- not accepted
  Galarhoeus densiusculiformis Pazij -- not accepted
  Galarhoeus dulcis (L.) Haw. -- not accepted
  Galarhoeus ebracteolatus (Hayata) H. Hara -- not accepted
  Galarhoeus ebracteolatus var. anwheiensis Hurus. -- not accepted
  Galarhoeus emarginatus Haw. -- not accepted
  Galarhoeus epithymoides (L.) Haw. -- not accepted
  Galarhoeus esula (L.) Rydb. -- not accepted
  Galarhoeus falcatus (L.) Prokh. -- not accepted
  Galarhoeus fischerianus (Steud.) Kitag. -- not accepted
  Galarhoeus flavicomus (DC.) Fourr. -- not accepted
  Galarhoeus floridanus (Chapm.) Small -- not accepted
  Galarhoeus formosanus (Hayata) H. Hara -- not accepted
  Galarhoeus genistoides (P.J. Bergius) Haw. -- not accepted
  Galarhoeus glareosus (Pall. ex M. Bieb.) Prokh. -- not accepted
  Galarhoeus gmelinii (Steud.) Prokh. -- not accepted
  Galarhoeus hakutosanensis (Hurus.) Hurus. -- not accepted
  Galarhoeus helioscopius (L.) Haw. -- not accepted
  Galarhoeus helioscopius f. litoralis Hurus. -- not accepted
  Galarhoeus helioscopius f. pilosus Hurus. -- not accepted
  Galarhoeus hippocrepicus (Hemsl.) Hurus. -- not accepted
  Galarhoeus hybernus (L.) Haw. -- not accepted
  Galarhoeus ibericus (Boiss.) Prokh. -- not accepted
  Galarhoeus imbricatus (Vahl) Haw. -- not accepted
  Galarhoeus inundatus (Torr. ex Chapm.) Small -- not accepted
  Galarhoeus irgisensis (Litv.) Prokh. -- not accepted
  Galarhoeus issykkulensis (Prokh.) Prokh. -- not accepted
  Galarhoeus jolkinii (Boiss.) H. Hara -- not accepted
  Galarhoeus jolkinii f. insularis Hurus. -- not accepted
  Galarhoeus junceus (Aiton) Haw. -- not accepted
  Galarhoeus kaleniczenkii (Czern.) Kitag. -- not accepted
  Galarhoeus kitagawae (Hurus.) Hurus. -- not accepted
  Galarhoeus kudrjaschevii Pazij -- not accepted
  Galarhoeus lamprocarpus (Prokh.) Prokh. -- not accepted
  Galarhoeus lasiocaulus (Boiss.) Hurus. -- not accepted
  Galarhoeus lasiocaulus f. maritima Hurus. -- not accepted
  Galarhoeus lasiocaulus var. pseudolucorum Hurus. -- not accepted
  Galarhoeus lasiocaulus var. watanabei (Makino) Hurus. -- not accepted
  Galarhoeus lathyris (L.) Haw. -- not accepted
  Galarhoeus latifolius (C.A. Mey. ex Ledeb.) Prokh. -- not accepted
  Galarhoeus leptocaulus (Boiss.) Prokh. -- not accepted
  Galarhoeus linifolius (Nath. ex L.) Haw. -- not accepted
  Galarhoeus literatus (Jacq.) Haw. -- not accepted
  Galarhoeus lucidus (Waldst. & Kit.) Rydb. -- not accepted
  Galarhoeus lucorum (Rupr.) Kitag. -- not accepted
  Galarhoeus lunulatus (Bunge) Kitag. -- not accepted
  Galarhoeus luticola (Hand.-Mazz.) Hurus. -- not accepted
  Galarhoeus mandshuricus (Maxim.) Kitag. -- not accepted
  Galarhoeus micranthus (Stephan ex Willd.) Haw. -- not accepted
  Galarhoeus missouriensis (Norton) Rydb. -- not accepted
  Galarhoeus myrsinites (L.) Haw. -- not accepted
  Galarhoeus nematocypha (Hand.-Mazz.) Hurus. -- not accepted
  Galarhoeus nicaeensis (All.) Haw. -- not accepted
  Galarhoeus nudus (Velen.) Prokh. -- not accepted
  Galarhoeus obtusatus (Pursh) Small ex Rydb. -- not accepted
  Galarhoeus orientalis (L.) Haw. -- not accepted
  Galarhoeus pallasii (Turcz.) Hatus. ex Hurus. -- not accepted
  Galarhoeus palustris (L.) Haw. -- not accepted
  Galarhoeus paralias (L.) Haw. -- not accepted
  Galarhoeus pekinensis (Rupr.) H. Hara -- not accepted
  Galarhoeus peplus (L.) Prokh. -- not accepted
  Galarhoeus petrophilus (C.A. Mey.) Prokh. -- not accepted
  Galarhoeus pilosus (L.) Haw. -- not accepted
  Galarhoeus pithyusa (L.) Haw. -- not accepted
  Galarhoeus praecox (Boiss.) Prokh. -- not accepted
  Galarhoeus procerus (M. Bieb.) Prokh. -- not accepted
  Galarhoeus pseudagrarius (P.A. Smirn.) Prokh. -- not accepted
  Galarhoeus pubescens (Vahl) Fourr. -- not accepted
  Galarhoeus rigidus (M. Bieb.) Haw. -- not accepted
  Galarhoeus robustus (Engelm.) Rydb. -- not accepted
  Galarhoeus salicifolius (Host) Haw. -- not accepted
  Galarhoeus sampsonii (Hance) Hurus. -- not accepted
  Galarhoeus sareptanus (Becker) Prokh. -- not accepted
  Galarhoeus seguierianus (Neck.) Prokh. -- not accepted
  Galarhoeus semivillosus (Prokh.) Prokh. -- not accepted
  Galarhoeus sendaicus (Makino) H. Hara -- not accepted
  Galarhoeus sendaicus var. musashiensis Hurus. -- not accepted
  Galarhoeus serratus (L.) Haw. -- not accepted
  Galarhoeus shouanensis (H. Keng) Hurus. -- not accepted
  Galarhoeus sieboldianus (C. Morren & Decne.) H. Hara -- not accepted
  Galarhoeus sieboldianus f. grandifolius Franch. & Sav. ex Hurus. -- not accepted
  Galarhoeus sieboldianus var. ohsumiensis Hurus. -- not accepted
  Galarhoeus soongaricus (Boiss.) Prokh. -- not accepted
  Galarhoeus spinosus (L.) Haw. -- not accepted
  Galarhoeus strictus (L.) Haw. -- not accepted
  Galarhoeus subcordatus (Ledeb.) Prokh. -- not accepted
  Galarhoeus subtilis Prokh. -- not accepted
  Galarhoeus tanguticus (Prokh.) Prokh. -- not accepted
  Galarhoeus tarokoensis (Hayata) H. Hara -- not accepted
  Galarhoeus telephioides (Chapm.) Small -- not accepted
  Galarhoeus tibeticus (Boiss.) Prokh. -- not accepted
  Galarhoeus togakusensis (Hayata) H. Hara -- not accepted
  Galarhoeus togakusensis f. intermedius Hurus. -- not accepted
  Galarhoeus tranzschelii (Prokh.) Prokh. -- not accepted
  Galarhoeus trichotomus (Kunth) Small -- not accepted
  Galarhoeus undulatus (M. Bieb.) Prokh. -- not accepted
  Galarhoeus uralensis (Fisch. ex Link) Prokh. -- not accepted
  Galarhoeus verrucosus (L.) Haw. -- not accepted
  Galarhoeus villosus (Waldst. & Kit. ex Willd.) Prokh. -- not accepted
  Galarhoeus virgatus (Waldst. & Kit.) Prokh. -- not accepted
  Galarhoeus volgensis (Krysht.) Prokh. -- not accepted
  Galarhoeus watanabei (Makino) H. Hara -- not accepted
  Galarhoeus zhiguliensis Prokh. -- not accepted
  Galorhoeus Endl. -- not accepted
  Geiseleria chamaedrifolia Klotzsch -- not accepted
  Geiseleria corchorifolia Klotzsch -- not accepted
  Givotia Griff. -- accepted
  Givotia moluccana (L.) Sreem. -- accepted
  Hendecandra divaricatus Klotzsch -- not accepted
  Hendecandra texensis Klotzsch -- not accepted
  Hendecandra velleriflora Klotzsch -- not accepted
  Heterocroton mentiens S. Moore -- not accepted
  Hexadenia Klotzsch & Garcke -- not accepted
  Hexadenia macrocarpa (Benth.) Klotzsch & Garcke -- not accepted
  Homalanthus A. Juss. -- accepted
  Homalanthus nutans (G. Forst.) Guill. -- accepted
  Homonoia Lour. -- accepted
  Homonoia riparia Lour. -- accepted
  Jatropha L. -- accepted -- nettlespurge
  Jatropha capensis (L. f.) Sond. -- accepted
  Jatropha pelargoniifolia Courbon -- accepted
  Jatropha spinosa Vahl -- accepted
  Julocroton abutiloides S. Moore -- not accepted
  Julocroton ackermannianus Müll. Arg. -- not accepted
  Julocroton acuminatissimus Pittier -- not accepted
  Julocroton agrestis Pax & K. Hoffm. -- not accepted
  Julocroton argenteus (L.) Didr. -- not accepted
  Julocroton brittonianum Morong -- not accepted
  Julocroton camporum Chodat & Hassl. -- not accepted
  Julocroton chodatii Croizat -- not accepted
  Julocroton conspurcatus (Schltdl.) Klotzsch -- not accepted
  Julocroton cooperianus Croizat -- not accepted
  Julocroton crassirameus Croizat -- not accepted
  Julocroton doratophylloides Croizat -- not accepted
  Julocroton doratophyllus (Baill.) Müll. Arg. -- not accepted
  Julocroton elaeagnoides S. Moore -- not accepted
  Julocroton fuscescens (Spreng.) Baill. -- not accepted
  Julocroton gardneri Müll. Arg. -- not accepted
  Julocroton geraesensis Baill. -- not accepted
  Julocroton glazioui Croizat -- not accepted
  Julocroton herzogianus Pax & K. Hoffm. -- not accepted
  Julocroton holodiscus Croizat -- not accepted
  Julocroton hondensis (H. Karst.) Müll. Arg. -- not accepted
  Julocroton humilis Didr. -- not accepted
  Julocroton humilis var. robustior L.B. Sm. & Downs -- not accepted
  Julocroton humilis var. solanaceus Müll. Arg. -- not accepted
  Julocroton integer Chodat -- not accepted
  Julocroton lanatus Klotzsch ex Baill. -- not accepted
  Julocroton lanceolatus Klotzsch ex Müll. Arg. -- not accepted
  Julocroton lepidus S. Moore -- not accepted
  Julocroton linearifolius (Chodat & Hassl.) Croizat -- not accepted
  Julocroton lithrifolius Croizat -- not accepted
  Julocroton malvoides Croizat -- not accepted
  Julocroton microcalyx Müll. Arg. -- not accepted
  Julocroton montevidensis Klotzsch ex Baill. -- not accepted
  Julocroton montevidensis var. linearifolius Chodat & Hassl. -- not accepted
  Julocroton montevidensis var. pilosus Müll. Arg. -- not accepted
  Julocroton montevidensis var. stipularis Müll. Arg. -- not accepted
  Julocroton nervosus Baill. -- not accepted
  Julocroton nigricans Mart. ex Schltdl. -- not accepted
  Julocroton paniculatus Pax & K. Hoffm. -- not accepted
  Julocroton paulensis Usteri -- not accepted
  Julocroton peruvianus Müll. Arg. -- not accepted
  Julocroton peruvianus var. flavispicatus (Rusby) Croizat -- not accepted
  Julocroton phagedaenicus Mart. -- not accepted
  Julocroton phyllanthus Chodat & Hassl. -- not accepted
  Julocroton pilosus (Müll. Arg.) Herter -- not accepted
  Julocroton pulcher Croizat -- not accepted
  Julocroton pycnophyllus Schltdl. ex Müll. Arg. -- not accepted
  Julocroton pycnophyllus f. latifolius Chodat & Hassl. -- not accepted
  Julocroton pyrosoma Croizat -- not accepted
  Julocroton quinquenervius Baill. -- not accepted
  Julocroton ramboi L.B. Sm. & Downs -- not accepted
  Julocroton riedelianus Müll. Arg. -- not accepted
  Julocroton rupestris Chodat & Hassl. -- not accepted
  Julocroton rupestris var. velutinus Chodat & Hassl. -- not accepted
  Julocroton rutilus Chodat & Hassl. -- not accepted
  Julocroton salzmannii Baill. -- not accepted
  Julocroton serratus Müll. Arg. -- not accepted
  Julocroton solanaceus (Müll. Arg.) Müll. Arg. -- not accepted
  Julocroton stipularis (Müll. Arg.) Müll. Arg. -- not accepted
  Julocroton subpannosus (Müll. Arg. ex Griseb.) Müll. Arg. -- not accepted
  Julocroton thellungianus Herter ex Arechav. -- not accepted
  Julocroton trichophilus Pax & K. Hoffm. -- not accepted
  Julocroton triqueter (Lam.) Didr. -- not accepted
  Julocroton triqueter var. conspurcatus (Schltdl.) Müll. Arg. -- not accepted
  Julocroton typhicephalus Croizat -- not accepted
  Julocroton velutinus (Chodat & Hassl.) Croizat -- not accepted
  Julocroton verbascifolius Müll. Arg. -- not accepted
  Julocroton vergarenae Jabl. -- not accepted
  Julocroton villosissimus Chodat & Hassl. -- not accepted
  Julocroton viridulus Croizat -- not accepted
  Julocroton vulpinus Croizat -- not accepted
  Kanopikon Raf. -- not accepted
  Kanopikon atropurpureum (Brouss. ex Willd.) Raf. -- not accepted
  Keraselma Neck. -- not accepted
  Keraselma ciliata Raf. -- not accepted
  Keraselma corifolia (Lam.) Raf. -- not accepted
  Keraselma cyparissias (L.) Raf. -- not accepted
  Keraselma diversifolia (Poir.) Raf. -- not accepted
  Keraselma echinocarpa Raf. -- not accepted
  Keraselma esula (L.) Raf. -- not accepted
  Keraselma exigua (L.) Raf. -- not accepted
  Keraselma falcata (L.) Raf. -- not accepted
  Keraselma genistoides (P.J. Bergius) Raf. -- not accepted
  Keraselma lathyris (L.) Raf. -- not accepted
  Keraselma leptophylla (Vill.) Raf. -- not accepted
  Keraselma lucida (Waldst. & Kit.) Raf. -- not accepted
  Keraselma oleracea (Pers.) Raf. -- not accepted
  Keraselma pallida (Willd.) Raf. -- not accepted
  Keraselma peplus (L.) Raf. -- not accepted
  Keraselma provincialis (Willd.) Raf. -- not accepted
  Keraselma pungens (Lam.) Raf. -- not accepted
  Keraselma reniformis Raf. -- not accepted
  Keraselma retusa (L.) Raf. -- not accepted
  Keraselma rubra (Cav.) Raf. -- not accepted
  Keraselma segetalis (L.) Raf. -- not accepted
  Keraselma seguieri (Scop.) Raf. -- not accepted
  Keraselma spathulata (Lam.) Raf. -- not accepted
  Keraselma squamosa (Willd.) Raf. -- not accepted
  Keraselma sylvatica (L.) Raf. -- not accepted
  Keraselma virgata (Waldst. & Kit.) Raf. -- not accepted
  Kobiosis Raf. -- not accepted
  Lacanthis Raf. -- not accepted
  Lacanthis splendens (Bojer ex Hook.) Raf. -- not accepted
  Lasiocroton Griseb. -- accepted
  Lasiocroton prunifolius Griseb. -- not accepted
  Lasiogyne pottsii Klotzsch -- not accepted
  Leidesia Müll. Arg. -- accepted
  Leidesia procumbens (L.) Prain -- accepted
  Lepadena Raf. -- not accepted
  Lepadena bicolor (Engelm. & A. Gray) Nieuwl. -- not accepted
  Lepadena leucoloma (Raf.) Raf. -- not accepted
  Lepadena marginata (Pursh) Nieuwl. -- not accepted
  Leptopus Klotzsch & Garcke -- not accepted
  Leptopus adiantoides (Lam.) Klotzsch & Garcke -- not accepted
  Leptopus brasiliensis Klotzsch & Garcke -- not accepted
  Leptopus hartwegii Klotzsch & Garcke -- not accepted
  Leptopus ocymoides (L.) Klotzsch & Garcke ex B.D.Jacks. -- not accepted
  Leptopus poeppigii Klotzsch & Garcke -- not accepted
  Leptopus segoviensis Klotzsch & Garcke -- not accepted
  Leucocroton Griseb. -- accepted
  Leucocroton wrightii Griseb. -- accepted
  Lobanilia Radcl.-Sm. -- accepted
  Lobanilia luteobrunnea (Baker) Radcl.-Sm. -- accepted
  Lobanilia ovalis (Baill.) Radcl.-Sm. -- accepted
  Lophobios Raf. -- not accepted
  Lophobios cristata (B. Heyne ex Roth) Raf. -- not accepted
  Lophobios terracina (L.) Raf. -- not accepted
  Lortia Rendle -- not accepted
  Lortia erubescens Rendle -- not accepted
  Lortia major Pax -- not accepted
  Lyciopsis (Boiss.) Schweinf. -- not accepted
  Lyciopsis cuneata (Vahl) Schweinf. -- not accepted
  Macaranga Thouars -- accepted
  Macaranga grandifolia (Blanco) Merr. -- accepted
  Macaranga tanarius (L.) Müll. Arg. -- accepted -- parasol leaf tree
  Mallotus Lour. -- accepted
  Mallotus apelta (Lour.) Müll. Arg. -- accepted
  Mallotus atrovirens Wall. ex Müll. Arg. -- accepted
  Mallotus japonicus (L. f.) Müll. Arg. -- accepted
  Mallotus lappaceus Müll. Arg. -- accepted
  Mallotus minahassae Koord. -- not accepted
  Mallotus mollissimus (Geiseler) Airy Shaw -- accepted
  Mallotus oppositifolius (Geiseler) Müll. Arg. -- accepted
  Mallotus paniculatus (Lam.) Müll. Arg. -- accepted
  Mallotus philippensis (Lam.) Müll. Arg. -- accepted -- kamala tree
  Mallotus repandus (Rottler) Müll. Arg. -- accepted
  Mallotus rhamnifolius (Willd.) Müll. Arg. -- accepted
  Mallotus tiliifolius (Blume) Müll. Arg. -- accepted
  Mallotus yifengensis Hu & F.H. Chen -- not accepted
  Manihot Mill. -- accepted -- cassava
  Manihot digitata Sweet -- accepted
  Medea timandroides Didr. -- not accepted
  Medusea Haw. -- not accepted
  Medusea fructus-pini Haw. -- not accepted
  Medusea globosa (Haw.) Klotzsch & Garcke -- not accepted
  Medusea hamata (Haw.) Klotzsch & Garcke -- not accepted
  Medusea major Haw. -- not accepted
  Medusea patula (Mill.) Klotzsch & Garcke -- not accepted
  Medusea procumbens (Mill.) Haw. -- not accepted
  Medusea tessellata Haw. -- not accepted
  Medusea tridentata (Lam.) Klotzsch & Garcke -- not accepted
  Medusea tuberculata (Jacq.) Klotzsch & Garcke -- not accepted
  Melanolepis Rchb. f. & Zoll. -- accepted
  Melanolepis multiglandulosa (Reinw. ex Blume) Rchb. & Zoll. -- accepted
  Mildbraedia balboana Chiov. -- not accepted
  Moacroton trigonocarpus (C. Wright ex Griseb.) Croizat -- not accepted
  Monadenium Pax -- not accepted
  Monadenium aculeolatum Pax -- not accepted
  Monadenium angolense P.R.O. Bally -- not accepted
  Monadenium arborescens P.R.O. Bally -- not accepted
  Monadenium asperrimum Pax -- not accepted
  Monadenium bianoense Malaisse & Lecron -- not accepted
  Monadenium bodenghieniae Malaisse & Lecron -- not accepted
  Monadenium cannellii L.C. Leach -- not accepted
  Monadenium capitatum P.R.O. Bally -- not accepted
  Monadenium catenatum S. Carter -- not accepted
  Monadenium chevalieri N.E. Br. -- not accepted
  Monadenium chevalieri var. filiforme P.R.O. Bally -- not accepted
  Monadenium chevalieri var. spathulatum P.R.O. Bally -- not accepted
  Monadenium clarae Malaisse & Lecron -- not accepted
  Monadenium coccineum Pax -- not accepted
  Monadenium crenatum N.E. Br. -- not accepted
  Monadenium crispum N.E. Br. -- not accepted
  Monadenium cupricola Malaisse & Lecron -- not accepted
  Monadenium depauperatum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium descampsii Pax -- not accepted
  Monadenium dilunguense Malaisse & Lecron -- not accepted
  Monadenium discoideum P.R.O. Bally -- not accepted
  Monadenium echinulatum Stapf -- not accepted
  Monadenium echinulatum f. glabrescens P.R.O. Bally -- not accepted
  Monadenium elegans S. Carter -- not accepted
  Monadenium ellenbeckii N.E. Br. -- not accepted
  Monadenium ellenbeckii f. caulopodium P.R.O. Bally -- not accepted
  Monadenium erubescens (Rendle) N.E. Br. -- not accepted
  Monadenium fanshawei P.R.O. Bally -- not accepted
  Monadenium filiforme (P.R.O. Bally) S. Carter -- not accepted
  Monadenium friesii N.E. Br. -- not accepted
  Monadenium fwambense N.E. Br. -- not accepted
  Monadenium gillettii S. Carter -- not accepted
  Monadenium gladiatum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium globosum P.R.O. Bally & S. Carter -- not accepted
  Monadenium goetzei Pax -- not accepted
  Monadenium gossweileri N.E. Br. -- not accepted
  Monadenium gracile P.R.O. Bally -- not accepted
  Monadenium guentheri Pax -- not accepted
  Monadenium hedigerianum Malaisse -- not accepted
  Monadenium herbaceum Pax -- not accepted
  Monadenium heteropodum (Pax) N.E. Br. -- not accepted
  Monadenium heteropodum var. formosum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium hirsutum P.R.O. Bally -- not accepted
  Monadenium intermedium P.R.O. Bally -- not accepted
  Monadenium invenustum N.E. Br. -- not accepted
  Monadenium invenustum var. angustum P.R.O. Bally -- not accepted
  Monadenium kaessneri N.E. Br. -- not accepted
  Monadenium kimberleyanum G. Will. -- not accepted
  Monadenium kundelunguense Malaisse -- not accepted
  Monadenium laeve Stapf -- not accepted
  Monadenium laeve f. depauperata P.R.O. Bally -- not accepted
  Monadenium letestuanum Denis -- not accepted
  Monadenium letestuanum var. rotundifolium P.R.O. Bally -- not accepted
  Monadenium letouzeyanum Malaisse -- not accepted
  Monadenium lindenii S. Carter -- not accepted
  Monadenium lugardiae N.E. Br. -- not accepted
  Monadenium mafingense Hargreaves -- not accepted
  Monadenium magnificum E.A. Bruce -- not accepted
  Monadenium majus (Pax) N.E. Br. -- not accepted
  Monadenium mamfwense Malaisse & Lecron -- not accepted
  Monadenium montanum P.R.O. Bally -- not accepted
  Monadenium montanum var. rubellum P.R.O. Bally -- not accepted
  Monadenium nervosum P.R.O. Bally -- not accepted
  Monadenium nudicaule P.R.O. Bally -- not accepted
  Monadenium orobanchoides P.R.O. Bally -- not accepted
  Monadenium orobanchoides var. calycinum P.R.O. Bally -- not accepted
  Monadenium parviflorum N.E. Br. -- not accepted
  Monadenium pedunculatum S. Carter -- not accepted
  Monadenium petiolatum P.R.O. Bally -- not accepted
  Monadenium pseudoracemosum P.R.O. Bally -- not accepted
  Monadenium pseudoracemosum var. lorifolium P.R.O. Bally -- not accepted
  Monadenium pudibundum P.R.O. Bally -- not accepted
  Monadenium pudibundum var. lanatum S. Carter -- not accepted
  Monadenium pudibundum var. rotundifolium Malaisse & Lecron -- not accepted
  Monadenium reflexum Chiov. ex Chiarugi -- not accepted
  Monadenium renneyi S. Carter -- not accepted
  Monadenium rhizophorum P.R.O. Bally -- not accepted
  Monadenium rhizophorum var. stoloniferum P.R.O. Bally -- not accepted
  Monadenium ritchiei P.R.O. Bally -- not accepted
  Monadenium ritchiei ssp. marsabitense S. Carter -- not accepted
  Monadenium ritchiei ssp. nyambense S. Carter -- not accepted
  Monadenium rubellum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium rugosum S. Carter -- not accepted
  Monadenium schaijesii Malaisse -- not accepted
  Monadenium schubei (Pax) N.E. Br. -- not accepted
  Monadenium schubei var. formosum P.R.O. Bally -- not accepted
  Monadenium shebeliense M.G. Gilbert -- not accepted
  Monadenium simplex Pax -- not accepted
  Monadenium simplex var. pudibundum (P.R.O. Bally) P.R.O. Bally -- not accepted
  Monadenium spectabile S. Carter -- not accepted
  Monadenium spinescens (Pax) P.R.O. Bally -- not accepted
  Monadenium spinulosum S. Carter -- not accepted
  Monadenium stapelioides Pax -- not accepted
  Monadenium stapelioides f. congestum P.R.O. Bally -- not accepted
  Monadenium stapelioides var. congestum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium stellatum P.R.O. Bally -- not accepted
  Monadenium stoloniferum (P.R.O. Bally) S. Carter -- not accepted
  Monadenium succulentum Schweick. -- not accepted
  Monadenium torrei L.C. Leach -- not accepted
  Monadenium trinerve P.R.O. Bally -- not accepted
  Monadenium virgatum P.R.O. Bally -- not accepted
  Monadenium yattanum P.R.O. Bally -- not accepted
  Monadenium yattanum var. gladiatum P.R.O. Bally -- not accepted
  Monadenium zavattarii Chiov. -- not accepted
  Monotaxis Brongn. -- accepted
  Monotaxis grandiflora Endl. -- accepted
  Murtekias Raf. -- not accepted
  Murtekias myrsinites (L.) Raf. -- not accepted
  Neoboutonia Müll. Arg. -- accepted
  Neoboutonia melleri (Müll. Arg.) Prain -- accepted
  Neoguillauminia Croizat -- accepted
  Neoguillauminia cleopatra (Baill.) Croizat -- accepted
  Neoshirakia Esser -- accepted
  Neoshirakia japonica (Siebold & Zucc.) Esser -- accepted
  Nisomenes Raf. -- not accepted
  Nisomenes diffusa (Jacq.) Raf. -- not accepted
  Ocalia sellowiana Klotzsch -- not accepted
  Oxydectes Kuntze -- not accepted
  Oxydectes hauthalii Kuntze -- not accepted
  Oxydectes roxburghiana Kuntze -- not accepted
  Peccana Raf. -- not accepted
  Peccana glauca Raf. -- not accepted
  Pedilanthus Neck. ex Poit. -- not accepted
  Pedilanthus anacampseroides Klotzsch & Garcke -- not accepted
  Pedilanthus angustifolius Poit. -- not accepted
  Pedilanthus aphyllus Boiss. ex Klotzsch -- not accepted
  Pedilanthus articulatus (Klotzsch & Garcke) Boiss. -- not accepted
  Pedilanthus bahamensis Millsp. -- not accepted
  Pedilanthus bracteatus (Jacq.) Boiss. -- not accepted
  Pedilanthus brittonii (Millsp.) Pax & K. Hoffm. -- not accepted
  Pedilanthus calcaratus Schltdl. -- not accepted
  Pedilanthus campester Brandegee -- not accepted
  Pedilanthus camporum Standl. & Steyerm. -- not accepted
  Pedilanthus canaliculatus (Lodd.) Sweet -- not accepted
  Pedilanthus carinatus (Donn) Spreng. -- not accepted
  Pedilanthus coalcomanensis Croizat -- not accepted
  Pedilanthus connatus Dressler & Sacamano -- not accepted
  Pedilanthus cordatus Spreng. -- not accepted
  Pedilanthus cordellatus (Haw.) Sweet -- not accepted
  Pedilanthus cymbiferus Schltdl. -- not accepted
  Pedilanthus deamii Millsp. -- not accepted
  Pedilanthus diazlunanus J. Lomelí & Sahagun -- not accepted
  Pedilanthus fendleri Boiss. -- not accepted
  Pedilanthus finkii Boiss. -- not accepted
  Pedilanthus ghiesbreghtianus Baill. -- not accepted
  Pedilanthus gracilis Dressler -- not accepted
  Pedilanthus greggii Millsp. -- not accepted
  Pedilanthus grisebachii Millsp. & Britton -- not accepted
  Pedilanthus gritensis Zahlbr. -- not accepted
  Pedilanthus houlletii Baill. -- not accepted
  Pedilanthus ierensis Britton -- not accepted
  Pedilanthus involucratus (Klotzsch & Garcke) Boiss. -- not accepted
  Pedilanthus itzaeus Millsp. -- not accepted
  Pedilanthus jamaicensis Millsp. & Britton -- not accepted
  Pedilanthus latifolius Millsp. & Britton -- not accepted
  Pedilanthus laurocerasifolius (Mill.) L.C. Wheeler -- not accepted
  Pedilanthus linearifolius Griseb. -- not accepted
  Pedilanthus lycioides Baker -- not accepted
  Pedilanthus macradenius Donn. Sm. -- not accepted
  Pedilanthus macrocarpus Benth. -- not accepted
  Pedilanthus millspaughii Pax & K. Hoffm. -- not accepted
  Pedilanthus myrsifolius (L.) Raf. -- not accepted
  Pedilanthus myrtifolius (L.) Link -- not accepted
  Pedilanthus olsson-sefferi Millsp. -- not accepted
  Pedilanthus padifolius (L.) Poit. -- not accepted
  Pedilanthus palmeri Millsp. -- not accepted
  Pedilanthus parasiticus Boiss. ex Klotzsch & Garcke -- not accepted
  Pedilanthus pavonis (Klotzsch & Garcke) Boiss. -- not accepted
  Pedilanthus peritropoides Millsp. -- not accepted
  Pedilanthus personatus Croizat -- not accepted
  Pedilanthus petraeus Brandegee -- not accepted
  Pedilanthus pringlei B.L. Rob. -- not accepted
  Pedilanthus pulchellus Dressler -- not accepted
  Pedilanthus purpusii Brandegee -- not accepted
  Pedilanthus ramosissimus Boiss. -- not accepted
  Pedilanthus retusus Benth. -- not accepted
  Pedilanthus rubescens Brandegee -- not accepted
  Pedilanthus smallii Millsp. -- not accepted
  Pedilanthus spectabilis B.L. Rob. -- not accepted
  Pedilanthus subcarinatus (Haw.) Sweet -- not accepted
  Pedilanthus tehuacanus Brandegee -- not accepted
  Pedilanthus tithymaloides (L.) Poit. -- not accepted -- redbird flower
  Pedilanthus tithymaloides ssp. angustifolius (Poit.) Dressler -- not accepted -- redbird flower
  Pedilanthus tithymaloides ssp. bahamensis (Millsp.) Dressler -- not accepted
  Pedilanthus tithymaloides ssp. jamaicensis (Millsp. & Britton) Dressler -- not accepted
  Pedilanthus tithymaloides ssp. padifolius (L.) Dressler -- not accepted -- redbird flower
  Pedilanthus tithymaloides ssp. parasiticus (Boiss. ex Klotzsch & Garcke) Dressler -- not accepted -- redbird flower
  Pedilanthus tithymaloides ssp. retusus (Benth.) Dressler -- not accepted
  Pedilanthus tithymaloides ssp. smallii (Millsp.) Dressler -- not accepted -- Small's redbird flower
  Pedilanthus tithymaloides ssp. tithymaloides (L.) Poit. -- not accepted -- redbird flower
  Pedilanthus tithymaloides var. angustifolius (Poit.) Griseb. -- not accepted
  Pedilanthus tithymaloides var. padifolius (L.) Griseb. -- not accepted
  Pedilanthus tomentellus B.L. Rob. & Greenm. -- not accepted
  Petaloma Raf. ex Boiss. -- not accepted
  Phyllanthus forskalii Lepr. ex Baill. -- not accepted
  Phyllanthus glabellus (L.) Fawc. & Rendle -- not accepted
  Plesiatropha Pierre -- accepted
  Plesiatropha paniculata (Pax) Breteler -- accepted
  Pleuradena Raf. -- not accepted
  Pleuradenia coccinea Raf. -- not accepted
  Podostachys lundianus Didr. -- not accepted
  Podostachys sclerocalyx Didr. -- not accepted
  Podostachys subfloccosa Didr. -- not accepted
  Poinsettia Graham -- not accepted
  Poinsettia barbellata (Engelm.) Small -- not accepted
  Poinsettia coccinea Dressler -- not accepted
  Poinsettia colorata (Engelm.) Dressler -- not accepted
  Poinsettia cornastra Dressler -- not accepted
  Poinsettia cuphosperma (Engelm.) Small -- not accepted
  Poinsettia cyathophora (Murray) Klotzsch & Garcke -- not accepted
  Poinsettia dentata (Michx.) Klotzsch & Garcke -- not accepted
  Poinsettia edwardsii Klotzsch & Garcke -- not accepted
  Poinsettia eriantha (Benth.) Rose & Standl. -- not accepted
  Poinsettia frangulifolia (Kunth) Klotzsch & Garcke -- not accepted
  Poinsettia geniculata (Ortega) Klotzsch & Garcke -- not accepted
  Poinsettia graminifolia (Engelm.) Millsp. -- not accepted
  Poinsettia havanensis Small -- not accepted
  Poinsettia heterophylla (L.) Klotzsch & Garcke -- not accepted
  Poinsettia inornata Dressler -- not accepted
  Poinsettia insulana (Vell.) Klotzsch & Garcke -- not accepted
  Poinsettia lancifolia (Schltdl.) Klotzsch & Garcke -- not accepted
  Poinsettia morisoniana (Klotzsch) Klotzsch & Garcke -- not accepted
  Poinsettia oerstediana Klotzsch & Garcke -- not accepted
  Poinsettia pedunculata Klotzsch & Garcke -- not accepted
  Poinsettia pentadactyla (Griseb.) Dressler -- not accepted
  Poinsettia pinetorum Small -- not accepted
  Poinsettia prunifolia (Jacq.) Klotzsch & Garcke -- not accepted
  Poinsettia pulcherrima (Willd. ex Klotzsch) Graham -- not accepted
  Poinsettia pulcherrima var. albida Maund -- not accepted
  Poinsettia punicea (Sw.) Klotzsch & Garcke -- not accepted
  Poinsettia radians (Benth.) Klotzsch & Garcke -- not accepted
  Poinsettia restiacea (Benth.) Dressler -- not accepted
  Poinsettia ruiziana Klotzsch & Garcke -- not accepted
  Poinsettia schiedeana Klotzsch & Garcke -- not accepted
  Poinsettia strigosa (Hook. & Arn.) Arthur -- not accepted
  Poinsettia xalapensis (Kunth) Klotzsch & Garcke -- not accepted
  Pythius Raf. -- not accepted
  Pythius dulcis (L.) Raf. -- not accepted
  Pythius epithymoides (L.) Raf. -- not accepted
  Pythius fuscata Raf. -- not accepted
  Pythius obtusata (Pursh) Raf. -- not accepted
  Ricinella vaseyi (J.M. Coult.) J.M. Coult. & Fisher -- not accepted
  Ricinocarpos Desf. -- accepted
  Ricinocarpos marginatus Benth. -- accepted
  Ricinocarpos pinifolius Desf. -- accepted
  Ricinocarpos rosmarinifolius Benth. -- accepted
  Ricinus L. -- accepted
  Ricinus communis L. -- accepted -- castor bean, agaliya, lama palagi, maskerekur, toto ni vavalagi, uluchula skoki, castorbean
  Rottlera brasiliensis Spreng. -- not accepted
  Saipania glandulosa Hosok. -- not accepted
  Sclerocyathium Prokh. -- not accepted
  Sclerocyathium popovii Prokh. -- not accepted
  Speranskia Baill. -- accepted
  Speranskia tuberculata (Bunge) Baill. -- accepted
  Stenadenium Pax -- not accepted
  Stenadenium spinescens Pax -- not accepted
  Sterigmanthe Klotzsch & Garcke -- not accepted
  Sterigmanthe bojeri (Hook.) Klotzsch & Garcke -- not accepted
  Sterigmanthe splendens (Bojer ex Hook.) Klotzsch & Garcke -- not accepted
  Sumbaviopsis J.J. Sm. -- accepted
  Sumbaviopsis albicans (Blume) J.J. Sm. -- accepted
  Synadenium Boiss. -- not accepted
  Synadenium angolense N.E. Br. -- not accepted
  Synadenium arborescens Boiss. -- not accepted
  Synadenium calycinum S. Carter -- not accepted
  Synadenium cameronii N.E. Br. -- not accepted
  Synadenium carinatum Boiss. -- not accepted
  Synadenium compactum N.E. Br. -- not accepted
  Synadenium compactum var. rubrum S. Carter -- not accepted
  Synadenium cupulare (Boiss.) L.C. Wheeler ex A.C. White, R.A. Dyer & B. Sloane -- not accepted
  Synadenium cymosum N.E. Br. -- not accepted
  Synadenium gazense N.E. Br. -- not accepted
  Synadenium glabratum S. Carter -- not accepted
  Synadenium glaucescens Pax -- not accepted
  Synadenium grantii Hook. f. -- not accepted
  Synadenium halipedicola L.C. Leach -- not accepted
  Synadenium kirkii N.E. Br. -- not accepted
  Synadenium molle Pax -- not accepted
  Synadenium pereskiifolium (Houllet ex Baill.) Guillaumin -- not accepted
  Synadenium piscatorium Pax -- not accepted
  Synadenium umbellatum Pax -- not accepted
  Synadenium umbellatum var. puberulum N.E. Br. -- not accepted
  Synadenium volkensii Pax -- not accepted
  Tannodia Baill. -- accepted
  Tannodia swynnertonii (S. Moore) Prain -- accepted
  Tiglium officinale Klotzsch -- not accepted
  Timandra dichotoma Klotzsch -- not accepted
  Timandra erythroxyloides Klotzsch -- not accepted
  Timandra serrata Klotzsch -- not accepted
  Tirucalia Raf. -- not accepted
  Tirucalia aequoris (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia alata (Hook.) P.V. Heath -- not accepted
  Tirucalia alluaudii (Drake) P.V. Heath -- not accepted
  Tirucalia amarifontana (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia angrae (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia aphylla (Brouss. ex Willd.) P.V. Heath -- not accepted
  Tirucalia arbuscula (Balf. f.) P.V. Heath -- not accepted
  Tirucalia arceuthobioides (Boiss.) P.V. Heath -- not accepted
  Tirucalia aspericaulis (Pax) P.V. Heath -- not accepted
  Tirucalia berotica (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia bottae (Boiss.) P.V. Heath -- not accepted
  Tirucalia brachiata (Klotzsch & Garcke) P.V. Heath -- not accepted
  Tirucalia burmannii (Klotzsch & Garcke) P.V. Heath -- not accepted
  Tirucalia calamiformis (P.R.O. Bally & S. Carter) P.V. Heath -- not accepted
  Tirucalia cameronii (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia carunculifera (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia cassythoides (Boiss.) P.V. Heath -- not accepted
  Tirucalia caterviflora (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia chersina (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia cibdela (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia congestiflora (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia corymbosa (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia cuneata (Vahl) P.V. Heath -- not accepted
  Tirucalia curocana (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia damarana (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia dregeana (E. Mey. ex Boiss.) P.V. Heath -- not accepted
  Tirucalia enterophora (Drake) P.V. Heath -- not accepted
  Tirucalia ephedroides (E. Mey. ex Boiss.) P.V. Heath -- not accepted
  Tirucalia fiherenensis (Poiss.) P.V. Heath -- not accepted
  Tirucalia gentilis (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia giessii (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia goetzei (Pax) P.V. Heath -- not accepted
  Tirucalia gossypina (Pax) P.V. Heath -- not accepted
  Tirucalia gregaria (Marloth) P.V. Heath -- not accepted
  Tirucalia gummifera (Boiss.) P.V. Heath -- not accepted
  Tirucalia herrei (A.C. White, R.A. Dyer & B. Sloane) P.V. Heath -- not accepted
  Tirucalia indecora (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia indica Raf. -- not accepted
  Tirucalia indurescens (L.C. Leach) P.V. Heath -- not accepted
  Tirucalia intisy (Drake) P.V. Heath -- not accepted
  Tirucalia juttae (Dinter) P.V. Heath -- not accepted
  Tirucalia karroensis (Boiss.) P.V. Heath -- not accepted
  Tirucalia lactiflua (Phil.) P.V. Heath -- not accepted
  Tirucalia larica (Boiss.) P.V. Heath -- not accepted
  Tirucalia lateriflora (Schumach.) P.V. Heath -- not accepted
  Tirucalia lignosa (Marloth) P.V. Heath -- not accepted
  Tirucalia macella (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia mainty (Denis ex Leandri) P.V. Heath -- not accepted
  Tirucalia mauritanica (L.) P.V. Heath -- not accepted
  Tirucalia mixta (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia muricata (Thunb.) P.V. Heath -- not accepted
  Tirucalia negromontana (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia nubica (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia paxiana (Dinter) P.V. Heath -- not accepted
  Tirucalia perpera (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia plagiantha (Drake) P.V. Heath -- not accepted
  Tirucalia platyclada (Rauh) P.V. Heath -- not accepted
  Tirucalia rectirama (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia rhombifolia (Boiss.) P.V. Heath -- not accepted
  Tirucalia rudolfii (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia sarcostemmatoides (Dinter) P.V. Heath -- not accepted
  Tirucalia schimperi (C. Presl) P.V. Heath -- not accepted
  Tirucalia spartaria (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia spicata (E. Mey. ex Boiss.) P.V. Heath -- not accepted
  Tirucalia spinea (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia stapelioides (Boiss.) P.V. Heath -- not accepted
  Tirucalia stenoclada (Baill.) P.V. Heath -- not accepted
  Tirucalia stolonifera (Marloth ex A.C. White, R.A. Dyer & B. Sloane) P.V. Heath -- not accepted
  Tirucalia tenax (Burch.) P.V. Heath -- not accepted
  Tirucalia tirucalli (L.) P.V. Heath -- not accepted
  Tirucalia transvaalensis (Schltr.) P.V. Heath -- not accepted
  Tirucalia verruculosa (N.E. Br.) P.V. Heath -- not accepted
  Tirucalia virgata (Haw.) P.V. Heath -- not accepted
  Tirucalia xylophylloides (Brongn. ex Lem.) P.V. Heath -- not accepted
  Tithymalodes Ludw. ex Kuntze -- not accepted
  Tithymalodes angustifolium (Poit.) Kuntze -- not accepted
  Tithymalodes aphyllum (Boiss. ex Klotzsch) Kuntze -- not accepted
  Tithymalodes articulatum (Klotzsch & Garcke) Kuntze -- not accepted
  Tithymalodes bracteatum (Jacq.) Kuntze -- not accepted
  Tithymalodes cordellata (Haw.) Kuntze -- not accepted
  Tithymalodes fendleri (Boiss.) Kuntze -- not accepted
  Tithymalodes finkii (Boiss.) Kuntze -- not accepted
  Tithymalodes ghiesbreghtianum (Baill.) Kuntze -- not accepted
  Tithymalodes houlletii (Baill.) Kuntze -- not accepted
  Tithymalodes involucratum (Klotzsch & Garcke) Kuntze -- not accepted
  Tithymalodes linearifolium (Griseb.) Kuntze -- not accepted
  Tithymalodes macrocarpum (Benth.) Kuntze -- not accepted
  Tithymalodes myrtifolium (L.) Kuntze -- not accepted
  Tithymalodes padifolium (L.) Kuntze -- not accepted
  Tithymalodes parasiticum (Boiss. ex Klotzsch & Garcke) Kuntze -- not accepted
  Tithymalodes pavonis (Klotzsch & Garcke) Kuntze -- not accepted
  Tithymalodes retusum (Benth.) Kuntze -- not accepted
  Tithymaloides Ortega -- not accepted
  Tithymalopsis Klotzsch & Garcke -- not accepted
  Tithymalopsis angustifolia Klotzsch & Garcke -- not accepted
  Tithymalopsis apocynifolia (Small) Small -- not accepted
  Tithymalopsis arundelana (Bartlett) Small -- not accepted
  Tithymalopsis corollata (L.) Klotzsch & Garcke -- not accepted
  Tithymalopsis corollata (L.) Small -- not accepted
  Tithymalopsis curtisii (Engelm.) Small -- not accepted
  Tithymalopsis discoidalis (Chapm.) Small -- not accepted
  Tithymalopsis eriogonoides (Small) Small -- not accepted
  Tithymalopsis exserta Small -- not accepted
  Tithymalopsis gracilis Small -- not accepted
  Tithymalopsis ipecacuanhae (L.) Small -- not accepted
  Tithymalopsis ipecacuanhae f. linearis Moldenke -- not accepted
  Tithymalopsis ipecacuanhae f. orbiculata Moldenke -- not accepted
  Tithymalopsis ipecacuanhae f. rubra Moldenke -- not accepted
  Tithymalopsis joorii (Norton) Small -- not accepted
  Tithymalopsis mercurialina (Michx.) Small -- not accepted
  Tithymalopsis olivacea (Small) Small -- not accepted
  Tithymalopsis paniculata Small -- not accepted
  Tithymalopsis polyphylla (Engelm. ex Holz.) Small -- not accepted
  Tithymalopsis sphaerorhiza (Benth.) Klotzsch & Garcke -- not accepted
  Tithymalopsis strictior (Holz.) Wooton & Standl. -- not accepted
  Tithymalopsis wrightii (Torr. & A. Gray) Small -- not accepted
  Tithymalopsis zinniiflora (Small) Small -- not accepted
  Tithymalus Ség. -- not accepted
  Tithymalus Gaertn. -- not accepted
  Tithymalus Mill. -- not accepted
  Tithymalus acalyphoides (Hochst. ex Boiss.) Schweinf. -- not accepted
  Tithymalus acanthothamnos (Heldr. & Sart. ex Boiss.) Soják -- not accepted
  Tithymalus acicularis Dulac -- not accepted
  Tithymalus acutifolius Lam. -- not accepted
  Tithymalus adenensis (Deflers) Soják -- not accepted
  Tithymalus adenochlorus (C. Morren & Decne.) H. Hara -- not accepted
  Tithymalus adrianus Klotzsch & Garcke -- not accepted
  Tithymalus aellenii (Rech. f.) Soják -- not accepted
  Tithymalus agowensis (Hochst. ex Boiss.) Schweinf. -- not accepted
  Tithymalus agrarius (M. Bieb.) Klotzsch & Garcke -- not accepted
  Tithymalus akenocarpus (Guss.) Klotzsch & Garcke -- not accepted
  Tithymalus alaicus Prokh. -- not accepted
  Tithymalus alatavicus (Boiss.) Prokh. -- not accepted
  Tithymalus aleppicus (L.) Klotzsch & Garcke -- not accepted
  Tithymalus alpigena (A. Kern.) Woerl. -- not accepted
  Tithymalus alpinus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus altaicus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus altissimus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus altotibeticus (Paulsen) Prokh. -- not accepted
  Tithymalus altus (Norton) Wooton & Standl. -- not accepted
  Tithymalus amplexicaulis Klotzsch & Garcke -- not accepted
  Tithymalus amygdaloides (L.) Garsault -- not accepted
  Tithymalus amygdaloides ssp. arbuscula (Meusel) Soják -- not accepted
  Tithymalus amygdaloides ssp. semiperfoliatus (Viv.) Soják -- not accepted
  Tithymalus anacampseros (Boiss.) Klotzsch -- not accepted
  Tithymalus ancyrensis (Azn. ex M.S. Khan) Soják -- not accepted
  Tithymalus andrachnoides (Schrenk) Klotzsch & Garcke -- not accepted
  Tithymalus androsaemifolius (Schousb. ex Willd.) Samp. -- not accepted
  Tithymalus angulatus (Jacq.) Raf. -- not accepted
  Tithymalus angustifolius Gilib. -- not accepted
  Tithymalus antiquorus (L.) Moench -- not accepted
  Tithymalus aphyllus (Brouss. ex Willd.) Klotzsch & Garcke -- not accepted
  Tithymalus apiculatus Klotzsch & Garcke -- not accepted
  Tithymalus apios (L.) Hill -- not accepted
  Tithymalus arboreus Tourn. ex Lam. -- not accepted
  Tithymalus ardonensis (Galushko) Galushko -- not accepted
  Tithymalus argutus (Banks & Sol.) Soják -- not accepted
  Tithymalus aristatus (Schmalh.) Prokh. -- not accepted
  Tithymalus arkansanus (Engelm. & A. Gray) Klotzsch & Garcke -- not accepted
  Tithymalus arkansanus var. coloradensis (Norton) Rydb. -- not accepted
  Tithymalus arvalis (Boiss. & Heldr.) Klotzsch & Garcke -- not accepted
  Tithymalus asper (M. Bieb.) Klotzsch & Garcke -- not accepted
  Tithymalus atlantis (Maire) Soják -- not accepted
  Tithymalus atropurpureus (Brouss. ex Willd.) Klotzsch & Garcke -- not accepted
  Tithymalus atrosanguineus Klotzsch & Garcke -- not accepted
  Tithymalus attenuatus Klotzsch & Garcke -- not accepted
  Tithymalus aucheri (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus aulacospermus (Boiss.) Klotzsch -- not accepted
  Tithymalus auriculatus Lam. -- not accepted
  Tithymalus austriacus (A. Kern.) Á. Löve & D. Löve -- not accepted
  Tithymalus austrinus Small -- not accepted
  Tithymalus austroanatolicus (Hub.-Mor. & M.S. Khan) Soják -- not accepted
  Tithymalus azoricus (Hochst.) Klotzsch & Garcke -- not accepted
  Tithymalus aztecus Croizat -- not accepted
  Tithymalus baeticus (Boiss.) Samp. -- not accepted
  Tithymalus bahamensis (Millsp.) Croizat -- not accepted
  Tithymalus balsamifer (Aiton) Haw. -- not accepted
  Tithymalus barrelieri (Savi) Soják -- not accepted
  Tithymalus barrelieri ssp. carnicus (Boiss.) Soják -- not accepted
  Tithymalus barrelieri ssp. hercegovinus (Beck) Soják -- not accepted
  Tithymalus barrelieri ssp. thessalus (Formánek) Soják -- not accepted
  Tithymalus basarabicus (Prodán) Soják -- not accepted
  Tithymalus baxanicus (Galushko) Galushko -- not accepted
  Tithymalus beamanii (M.C. Johnst.) Soják -- not accepted
  Tithymalus bergii Klotzsch & Garcke -- not accepted
  Tithymalus berytheus (Boiss. & Blanche) Soják -- not accepted
  Tithymalus biglandulosus (Desf.) Haw. -- not accepted
  Tithymalus biumbellatus (Poir.) Klotzsch & Garcke -- not accepted
  Tithymalus bivonae (Steud.) Soják -- not accepted
  Tithymalus blepharophyllus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus boissierianus Woronow -- not accepted
  Tithymalus bounophilus (Boiss.) Prokh. -- not accepted
  Tithymalus brachycerus (Engelm.) Small -- not accepted
  Tithymalus brachypus Klotzsch & Garcke -- not accepted
  Tithymalus bracteatus (Jacq.) Haw. -- not accepted
  Tithymalus braunii Schweinf. -- not accepted
  Tithymalus bridgesii Klotzsch & Garcke -- not accepted
  Tithymalus briquetii (Emb. & Maire) Soják -- not accepted
  Tithymalus brittingeri (Opiz ex Samp.) Holub -- not accepted
  Tithymalus broteroi (Daveau) Soják -- not accepted
  Tithymalus buchtormensis (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus buhsei (Boiss.) Prokh. -- not accepted
  Tithymalus bungei (Boiss.) Prokh. -- not accepted
  Tithymalus bupleurifolius (Jacq.) Haw. -- not accepted
  Tithymalus bupleuroides (Desf.) Soják -- not accepted
  Tithymalus buschianus (Grossh.) Soják -- not accepted
  Tithymalus cadrilateri (Prodán) Soják -- not accepted
  Tithymalus caeladenius (Boiss.) Soják -- not accepted
  Tithymalus caesalpini Bubani -- not accepted
  Tithymalus caesius (Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus caespitosus (Lam.) Soják -- not accepted
  Tithymalus caiogalus (Ehrh.) Moench -- not accepted
  Tithymalus calcaratus (Schltdl.) Croizat -- not accepted
  Tithymalus calendulifolius (Delile) Raf. -- not accepted
  Tithymalus calyculatus (Kunth) Klotzsch & Garcke -- not accepted
  Tithymalus calyptratus (Coss. & Durieu) Soják -- not accepted
  Tithymalus campestris (S. Geuns) Klotzsch & Garcke -- not accepted
  Tithymalus canariensis (L.) H. Karst. -- not accepted
  Tithymalus capensis Klotzsch & Garcke -- not accepted
  Tithymalus capitulatus (Rchb.) Soják -- not accepted
  Tithymalus cardiophyllus (Boiss. & Heldr.) Klotzsch & Garcke -- not accepted
  Tithymalus carniolicus (Jacq.) Raf. -- not accepted
  Tithymalus carpaticus (Wol.) Á. Löve & D. Löve -- not accepted
  Tithymalus cartaginiensis (Porta & Rigo) Soják -- not accepted
  Tithymalus cassia (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus cataputia Garsault -- not accepted
  Tithymalus caudiculosus (Boiss.) Prokh. -- not accepted
  Tithymalus cebrinus Klotzsch & Garcke -- not accepted
  Tithymalus celerieri (Emb.) Soják -- not accepted
  Tithymalus ceratocarpus (Ten.) Soják -- not accepted
  Tithymalus cerebrinus (Hochst. ex Boiss.) Schweinf. -- not accepted
  Tithymalus chaborasius (Gomb.) Soják -- not accepted
  Tithymalus chamaebuxus (Bernard ex Gren. & Godr.) Soják -- not accepted
  Tithymalus chamaepeplus (Boiss. & Gaill.) Soják -- not accepted
  Tithymalus chamaesula (Boiss.) Wooton & Standl. -- not accepted
  Tithymalus chamaesyce (L.) Moench -- not accepted
  Tithymalus chankoanus (Vorosch.) Soják -- not accepted
  Tithymalus characias (L.) Hill -- not accepted
  Tithymalus cheiradenius (Boiss. & Hohen.) Klotzsch & Garcke -- not accepted
  Tithymalus cheirolepioides (Rech. f.) Soják -- not accepted
  Tithymalus chesneyi Klotzsch & Garcke -- not accepted
  Tithymalus chilensis (Gay) Klotzsch & Garcke -- not accepted
  Tithymalus chimaerus (Lipsky) Galushko -- not accepted
  Tithymalus chrysophyllus Klotzsch & Garcke -- not accepted
  Tithymalus cinerascens Moench -- not accepted
  Tithymalus clementei (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus clusii Bubani -- not accepted
  Tithymalus cognatus Klotzsch -- not accepted
  Tithymalus collinus (Phil.) Klotzsch & Garcke -- not accepted
  Tithymalus commutatus (Engelm. ex A. Gray) Klotzsch & Garcke -- not accepted
  Tithymalus commutatus var. erectus (Norton) Small -- not accepted
  Tithymalus condylocarpus (M. Bieb.) Klotzsch & Garcke -- not accepted
  Tithymalus confertus Klotzsch & Garcke -- not accepted
  Tithymalus connata Raf. -- not accepted
  Tithymalus consanguineus (Schrenk) Klotzsch & Garcke -- not accepted
  Tithymalus corallioides (L.) Raf. -- not accepted
  Tithymalus cornutus (Pers.) Schweinf. ex Asch. -- not accepted
  Tithymalus correllii (M.C. Johnst.) Soják -- not accepted
  Tithymalus corsicus (Req.) Soják -- not accepted
  Tithymalus cossonianus (Boiss.) Soják -- not accepted
  Tithymalus cotinifolius (L.) Haw. -- not accepted
  Tithymalus craspedius (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus crebrifoliatus Bubani -- not accepted
  Tithymalus crenulatus (Engelm.) A. Heller -- not accepted
  Tithymalus cressoides (M.C. Johnst.) Soják -- not accepted
  Tithymalus crispus Haw. -- not accepted
  Tithymalus cristatus Raf. -- not accepted
  Tithymalus cuneifolius (Guss.) Klotzsch & Garcke -- not accepted
  Tithymalus cupanii (Guss. ex Bertol.) Klotzsch & Garcke -- not accepted
  Tithymalus cyatophorus (Murray) Moench -- not accepted
  Tithymalus cybirensis (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus cymbiferus (Schltdl.) Croizat -- not accepted
  Tithymalus cyparissias (L.) Hill -- not accepted
  Tithymalus cyrtophyllus Prokh. -- not accepted
  Tithymalus damascenus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus darlingtonii (A. Gray) Small -- not accepted
  Tithymalus davisii (M.S. Khan) Soják -- not accepted
  Tithymalus deamii (Millsp.) Croizat -- not accepted
  Tithymalus decipiens (Boiss. & Buhse) Soják -- not accepted
  Tithymalus declinatus Moench -- not accepted
  Tithymalus deflexus (Sibth. & Sm.) Klotzsch & Garcke -- not accepted
  Tithymalus deltobracteatus Prokh. -- not accepted
  Tithymalus dendroides (L.) Hill -- not accepted
  Tithymalus densiusculiformis (Pazij) Pazij -- not accepted
  Tithymalus densiusculus (Popov) Prokh. -- not accepted
  Tithymalus densus (Schrenk) Klotzsch & Garcke -- not accepted
  Tithymalus denticulatus Moench -- not accepted
  Tithymalus depauperatus (Hochst. ex A. Rich.) Klotzsch & Garcke -- not accepted
  Tithymalus deseglisei (Boreau ex Boiss.) Soják -- not accepted
  Tithymalus desertorum (Weinm.) Klotzsch & Garcke -- not accepted
  Tithymalus dictyospermus (Fisch. & C.A. Mey.) A. Heller -- not accepted
  Tithymalus diffusus Lam. -- not accepted
  Tithymalus dilatatus (Hochst. ex A. Rich.) Klotzsch & Garcke -- not accepted
  Tithymalus dimorphocaulon (P.H. Davis) Soják -- not accepted
  Tithymalus discolor (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus divergens Klotzsch -- not accepted
  Tithymalus djimilensis (Boiss.) Soják -- not accepted
  Tithymalus dobrogensis (Prodán) Soják -- not accepted
  Tithymalus dominii (Röhl.) Chrtek & Krísa -- not accepted
  Tithymalus dracunculoides (Lam.) Klotzsch & Garcke -- not accepted
  Tithymalus dracunculoides ssp. flamandii (Batt.) Soják -- not accepted
  Tithymalus dracunculoides ssp. glebulosus (Coss. & Durieu) Soják -- not accepted
  Tithymalus dracunculoides ssp. hesperius (Maire) Soják -- not accepted
  Tithymalus dracunculoides ssp. inconspicuus (Ball) Soják -- not accepted
  Tithymalus dracunculoides ssp. intermedius (Maire) Soják -- not accepted
  Tithymalus dracunculoides ssp. volutianus (Maire) Soják -- not accepted
  Tithymalus dulcis Scop. -- not accepted
  Tithymalus dulcis ssp. ellipticus (Pers.) Soják -- not accepted
  Tithymalus dulcis ssp. incomptus (Ces.) Soják -- not accepted
  Tithymalus dulcis ssp. purpuratus (Thuill.) Holub -- not accepted
  Tithymalus dumosus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus duvalii (Lecoq & Lamotte) Soják -- not accepted
  Tithymalus ebracteolatus (Hayata) H. Hara -- not accepted
  Tithymalus ecklonii Klotzsch & Garcke -- not accepted
  Tithymalus edgeworthii (Boiss.) Soják -- not accepted
  Tithymalus edulis (Lour.) H. Karst. -- not accepted
  Tithymalus elliottii Klotzsch & Garcke -- not accepted
  Tithymalus ellipticus Klotzsch & Garcke -- not accepted
  Tithymalus elwendicus (Stapf) Soják -- not accepted
  Tithymalus eochlorus Croizat -- not accepted
  Tithymalus epicyparissias E. Mey. ex Klotzsch & Garcke -- not accepted
  Tithymalus epithymoides (L.) Klotzsch & Garcke -- not accepted
  Tithymalus epithymoides var. microspermus (Murb.) Soják -- not accepted
  Tithymalus ericetorum (Zumagl.) Soják -- not accepted
  Tithymalus erinaceus (Boiss. & Kotschy) Soják -- not accepted
  Tithymalus eriophorus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus erubescens (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus erythradenius (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus erythraeus (Hemsl.) Soják -- not accepted
  Tithymalus erythrinus (Link) Klotzsch & Garcke -- not accepted
  Tithymalus erythrodon (Boiss. & Heldr.) Klotzsch & Garcke -- not accepted
  Tithymalus erythrorrhizus Klotzsch & Garcke -- not accepted
  Tithymalus esula (L.) Hill -- not accepted
  Tithymalus esula ssp. mosanus (Lej.) Soják -- not accepted
  Tithymalus esula ssp. pseudocyparissias (Jord.) Soják -- not accepted
  Tithymalus esula ssp. riparia (Jord.) Chrtek & Krísa -- not accepted
  Tithymalus esula ssp. tristis (Besser) Chrtek & Krísa -- not accepted
  Tithymalus esuliformis (S. Schauer ex Nees & S. Schauer) Klotzsch & Garcke -- not accepted
  Tithymalus exiguus (L.) Hill -- not accepted
  Tithymalus falcatus (L.) Klotzsch & Garcke -- not accepted
  Tithymalus falcatus ssp. acuminatus (Lam.) Soják -- not accepted
  Tithymalus falcatus ssp. macrostegius (Bornm.) Soják -- not accepted
  Tithymalus fendleri Klotzsch & Garcke -- not accepted
  Tithymalus fendleri (Boiss.) Croizat -- not accepted
  Tithymalus ferganensis (B. Fedtsch.) Prokh. -- not accepted
  Tithymalus filicinus (Port.) Soják -- not accepted
  Tithymalus firmus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus fischerianus (Steud.) Soják -- not accepted
  Tithymalus fistulosus (M.S. Khan) Soják -- not accepted
  Tithymalus flaccidus Moench -- not accepted
  Tithymalus flavicomus (DC.) Bubani -- not accepted
  Tithymalus flavicomus ssp. brittingeri (Opiz ex Samp.) Soják -- not accepted
  Tithymalus flavicomus ssp. costeanus (Rouy) Soják -- not accepted
  Tithymalus foliosus Klotzsch & Garcke -- not accepted
  Tithymalus fontquerianus (Greuter) Soják -- not accepted
  Tithymalus fragifer Klotzsch & Garcke -- not accepted
  Tithymalus franchetii (B. Fedtsch.) Prokh. -- not accepted
  Tithymalus franciscanus (Norton) A. Heller -- not accepted
  Tithymalus fruticosus Gilib. -- not accepted
  Tithymalus fruticosus Klotzsch & Garcke -- not accepted
  Tithymalus furcillatus (Kunth) Klotzsch & Garcke -- not accepted
  Tithymalus gaillardotii (Boiss. & Blanche) Klotzsch & Garcke -- not accepted
  Tithymalus galilaeus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus gasparrinii (Boiss.) Soják -- not accepted
  Tithymalus gaubae Soják -- not accepted
  Tithymalus gayi (Salis) Klotzsch & Garcke -- not accepted
  Tithymalus gedrosiacus (Rech. f., Aellen & Esfand.) Soják -- not accepted
  Tithymalus genistoides (P.J. Bergius) Klotzsch & Garcke -- not accepted
  Tithymalus gerardianus (Jacq.) Steud. -- not accepted
  Tithymalus gerardii Raf. -- not accepted
  Tithymalus gibellianus (Peola) Soják -- not accepted
  Tithymalus glaberrimus (K. Koch) Klotzsch & Garcke -- not accepted
  Tithymalus glabriflorus (Vis.) Soják -- not accepted
  Tithymalus glaucus Moench -- not accepted
  Tithymalus glomerulans Prokh. -- not accepted
  Tithymalus gmelinii (Steud.) Prokh. -- not accepted
  Tithymalus gracilis Klotzsch & Garcke -- not accepted
  Tithymalus graecus (Boiss. & Spruner) Klotzsch & Garcke -- not accepted
  Tithymalus graminifolius (Vill.) Soják -- not accepted
  Tithymalus graminifolius ssp. jaxarticus (Prokh.) Soják -- not accepted
  Tithymalus graminifolius ssp. orientalis (Boiss.) Soják -- not accepted
  Tithymalus graminifolius ssp. tommasiniana (Bertol.) Soják -- not accepted
  Tithymalus graminifolius ssp. waldsteinii (Soják) Soják -- not accepted
  Tithymalus graminifolius ssp. zhiguliensis (Prokh.) Soják -- not accepted
  Tithymalus granulatus (Forssk.) Raf. -- not accepted
  Tithymalus gregersenii (K. Malý ex Beck) Soják -- not accepted
  Tithymalus greggii (Millsp.) Croizat -- not accepted
  Tithymalus griffithii (Hook. f.) H. Hara -- not accepted
  Tithymalus grisebachii (Millsp. & Britton) Croizat -- not accepted
  Tithymalus grisophyllus (M.S. Khan) Soják -- not accepted
  Tithymalus grossheimii Prokh. -- not accepted
  Tithymalus guestii (Blakelock) Soják -- not accepted
  Tithymalus gulestanicus (Podlech) Soják -- not accepted
  Tithymalus guntensis Prokh. -- not accepted
  Tithymalus guyonianus (Boiss. & Reut.) Klotzsch & Garcke -- not accepted
  Tithymalus gypsicola (Rech. f. & Aellen) Soják -- not accepted
  Tithymalus haussknechtii (Boiss.) Soják -- not accepted
  Tithymalus hebecarpus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus heldreichii (Orph. ex Boiss.) Soják -- not accepted
  Tithymalus heldreichii ssp. semiverticillatus (Halácsy) Soják -- not accepted
  Tithymalus helioscopioides (Loscos & Pardo) Holub -- not accepted
  Tithymalus helioscopius (L.) Hill -- not accepted
  Tithymalus helioscopius ssp. dominii (Röhl.) Soják -- not accepted
  Tithymalus helioscopius ssp. helioscopioides (Loscos & Pardo) Soják -- not accepted
  Tithymalus helleri (Millsp.) Small -- not accepted
  Tithymalus henryi (Hemsl.) Soják -- not accepted
  Tithymalus herniariifolius (Willd.) Klotzsch & Garcke -- not accepted
  Tithymalus herpetorrhizus Prokh. -- not accepted
  Tithymalus heteradenus (Jaub. & Spach) Soják -- not accepted
  Tithymalus heterophyllus (L.) Haw. -- not accepted
  Tithymalus hieroglyphicus (Coss. & Durieu ex Boiss.) Soják -- not accepted
  Tithymalus hieronymi (Subils) Soják -- not accepted
  Tithymalus himalayensis Klotzsch -- not accepted
  Tithymalus hinkleyorum (I.M. Johnst.) Soják -- not accepted
  Tithymalus hippocrepicus (Hemsl.) Soják -- not accepted
  Tithymalus hirsutus Lam. -- not accepted
  Tithymalus hochstetterianus Klotzsch & Garcke -- not accepted
  Tithymalus hohenackeri Klotzsch & Garcke -- not accepted
  Tithymalus huanchahanus Klotzsch & Garcke -- not accepted
  Tithymalus humifusus (Willd.) Bubani -- not accepted
  Tithymalus humilis (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus hybernus (L.) Hill -- not accepted
  Tithymalus hybernus ssp. canuti (Parl.) Soják -- not accepted
  Tithymalus hybernus ssp. insularis (Boiss.) Soják -- not accepted
  Tithymalus hypoleucus Prokh. -- not accepted
  Tithymalus ibericus (Boiss.) Prokh. -- not accepted
  Tithymalus ierensis (Britton) Croizat -- not accepted
  Tithymalus imbricatus (Vahl) Klotzsch & Garcke -- not accepted
  Tithymalus imperfoliatus (Vis.) Soják -- not accepted
  Tithymalus incisa (Engelm.) W.A. Weber -- not accepted
  Tithymalus inderiensis (Less. ex Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus inundatus (Torr. ex Chapm.) Small -- not accepted
  Tithymalus involucratus Klotzsch & Garcke -- not accepted
  Tithymalus ipecacuanhae (L.) Klotzsch & Garcke -- not accepted
  Tithymalus irgisensis (Litv.) Prokh. -- not accepted
  Tithymalus isatidifolius (Lam.) Soják -- not accepted
  Tithymalus isauricus (M.S. Khan) Soják -- not accepted
  Tithymalus ispahanicus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus issykkulensis Prokh. -- not accepted
  Tithymalus isthmius (Täckh.) Soják -- not accepted
  Tithymalus itzaeus (Millsp.) Croizat -- not accepted
  Tithymalus ivanjohnstonii (M.C. Johnst.) Soják -- not accepted
  Tithymalus jacquemontii (Boiss.) Soják -- not accepted
  Tithymalus jacquinii (Fenzl ex Boiss.) Soják -- not accepted
  Tithymalus jamaicensis (Millsp. & Britton) Croizat -- not accepted
  Tithymalus jasiewiczii Chrtek & Krísa -- not accepted
  Tithymalus jaxarticus Prokh. -- not accepted
  Tithymalus jolkinii (Boiss.) H. Hara -- not accepted
  Tithymalus kanaoricus (Boiss.) Prokh. -- not accepted
  Tithymalus kansuensis (Prokh.) Prokh. -- not accepted
  Tithymalus kerneri (Huter ex A. Kern.) Pacher -- not accepted
  Tithymalus khasyanus (Boiss.) Soják -- not accepted
  Tithymalus klokovianus (Railyan) Holub -- not accepted
  Tithymalus koilopremnos Croizat -- not accepted
  Tithymalus kopetdaghi Prokh. -- not accepted
  Tithymalus kotschyanus (Fenzl) Klotzsch & Garcke -- not accepted
  Tithymalus kozlovii (Prokh.) Prokh. -- not accepted
  Tithymalus kurdicus (Boiss.) Prokh. -- not accepted
  Tithymalus laetus (Aiton) Haw. -- not accepted
  Tithymalus lagascae (Spreng.) Klotzsch & Garcke -- not accepted
  Tithymalus lamprocarpus Prokh. -- not accepted
  Tithymalus lateriflorus Klotzsch & Garcke -- not accepted
  Tithymalus lathyris (L.) Hill -- not accepted
  Tithymalus latifolius (C.A. Mey. ex Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus laurocerasifolius Mill. -- not accepted
  Tithymalus leiococcus (Engelm.) Small -- not accepted
  Tithymalus leptaleus (S. Schauer) Klotzsch & Garcke -- not accepted
  Tithymalus leptocerus (Engelm. ex Boiss.) Arthur -- not accepted
  Tithymalus leptophyllus Bubani -- not accepted
  Tithymalus linearis (Retz.) Raf. -- not accepted
  Tithymalus lingulatus (Heuff.) Soják -- not accepted
  Tithymalus linifolius Lam. -- not accepted
  Tithymalus linifolius (Nath. ex L.) Klotzsch & Garcke -- not accepted
  Tithymalus lipskyi Prokh. -- not accepted
  Tithymalus literatus (Jacq.) Raf. -- not accepted
  Tithymalus litwinowii Prokh. -- not accepted
  Tithymalus longicorniculatus (Kitam.) Soják -- not accepted
  Tithymalus longicruris (Scheele) Small -- not accepted
  Tithymalus longifolius Hurus. & Yu. Tanaka -- not accepted
  Tithymalus longipetiolatus Klotzsch & Garcke -- not accepted
  Tithymalus longiradiatus (Lapeyr.) Bubani -- not accepted
  Tithymalus louisii (Thiébaut) Soják -- not accepted
  Tithymalus lucidus (Waldst. & Kit.) Klotzsch & Garcke -- not accepted
  Tithymalus lunulatus (Bunge) Soják -- not accepted
  Tithymalus luridus (Engelm.) Wooton & Standl. -- not accepted
  Tithymalus lutescens (C.A. Mey.) Klotzsch & Garcke -- not accepted
  Tithymalus macradenius (Donn. Sm.) Croizat -- not accepted
  Tithymalus macrocarpus (Benth.) Croizat -- not accepted
  Tithymalus macroceras (Fisch. & C.A. Mey.) Klotzsch & Garcke -- not accepted
  Tithymalus macrocladus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus macrorhizus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus macrostegius Soják -- not accepted
  Tithymalus maculatus (L.) Moench -- not accepted
  Tithymalus maddenii (Boiss.) Soják -- not accepted
  Tithymalus malleatus (Boiss.) Soják -- not accepted
  Tithymalus malurensis (Rech. f.) Soják -- not accepted
  Tithymalus malvanus (Maire) Soják -- not accepted
  Tithymalus mancus (A. Nelson) A. Heller -- not accepted
  Tithymalus mandshuricus (Maxim.) Soják -- not accepted
  Tithymalus maresii (Knoche) Soják -- not accepted
  Tithymalus marginatus f. inornata Daniels -- not accepted
  Tithymalus marginatus var. tetramerus Cockerell -- not accepted
  Tithymalus mariolensis (Rouy) Holub -- not accepted
  Tithymalus maritimus Lam. -- not accepted
  Tithymalus marschallianus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus marschallianus ssp. armenus (Prokh.) Soják -- not accepted
  Tithymalus marschallianus ssp. woronowii (Grossh.) Soják -- not accepted
  Tithymalus matritensis (Boiss.) Samp. -- not accepted
  Tithymalus matthiolii Bubani -- not accepted
  Tithymalus mauritanicus (L.) Haw. -- not accepted
  Tithymalus mazicum (Emb. & Maire) Soják -- not accepted
  Tithymalus mcvaughianus (M.C. Johnst.) Soják -- not accepted
  Tithymalus medicagineus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus medicagineus ssp. arsenariensis (Batt.) Soják -- not accepted
  Tithymalus megalanthus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus megalatlanticus (Ball) Soják -- not accepted
  Tithymalus megalocarpus (Rech. f.) Soják -- not accepted
  Tithymalus melanopotamicus Croizat -- not accepted
  Tithymalus melapetalus (Gasp. ex Guss.) Klotzsch & Garcke -- not accepted
  Tithymalus melliferus (Aiton) Moench -- not accepted
  Tithymalus mesopotamicus (M.S. Khan) Soják -- not accepted
  Tithymalus mexicanus (Engelm.) Wooton & Standl. -- not accepted
  Tithymalus meyeri Klotzsch & Garcke -- not accepted
  Tithymalus meyerianus (Galushko) Galushko -- not accepted
  Tithymalus micractinus (Boiss.) Soják -- not accepted
  Tithymalus micranthus (Stephan ex Willd.) Raf. -- not accepted
  Tithymalus microcarpus Prokh. -- not accepted
  Tithymalus microsciadius (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus microsphaerus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus millspaughii (Pax & K. Hoffm.) Croizat -- not accepted
  Tithymalus minutus (Loscos & Pardo) Soják -- not accepted
  Tithymalus missouriensis (Norton) Small -- not accepted
  Tithymalus monchiquensis (Franco & P. Silva) Soják -- not accepted
  Tithymalus mongolicus Prokh. -- not accepted
  Tithymalus monocyathium Prokh. -- not accepted
  Tithymalus montenegrinus (Bald.) Soják -- not accepted
  Tithymalus monticola (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus mucronatus Bubani -- not accepted
  Tithymalus mucronulatus Prokh. -- not accepted
  Tithymalus multicaulis Klotzsch & Garcke -- not accepted
  Tithymalus multifurcatus (Rech. f., Aellen & Esfand.) Soják -- not accepted
  Tithymalus myrsinites (L.) Hill -- not accepted
  Tithymalus myrtifolius (L.) Mill. -- not accepted
  Tithymalus nakaianus (H. Lév.) H. Hara -- not accepted
  Tithymalus neilmulleri (M.C. Johnst.) Soják -- not accepted
  Tithymalus nereidum (Jahand. & Maire) Soják -- not accepted
  Tithymalus nevadensis (Boiss. & Reut.) Klotzsch & Garcke -- not accepted
  Tithymalus nicaeensis (All.) Klotzsch & Garcke -- not accepted
  Tithymalus nicaeensis ssp. cadrilateri (Prodán) Soják -- not accepted
  Tithymalus nicaeensis ssp. glareosus (Pall. ex M. Bieb.) Soják -- not accepted
  Tithymalus nicaeensis ssp. goldei (Prokh.) Soják -- not accepted
  Tithymalus nicaeensis ssp. japygicus (Ten.) Soják -- not accepted
  Tithymalus nicaeensis ssp. pannonicus (Host) Soják -- not accepted
  Tithymalus nicaeensis ssp. stepposus (Zoz) Soják -- not accepted
  Tithymalus nicicianus (Borbás ex Novák) Soják -- not accepted
  Tithymalus nodiflorus (Millsp.) Croizat -- not accepted
  Tithymalus notabilis Soják -- not accepted
  Tithymalus notadenius (Boiss. & Hohen.) Klotzsch & Garcke -- not accepted
  Tithymalus nudiflorus Haw. -- not accepted
  Tithymalus nudus (Velen.) Prokh. -- not accepted
  Tithymalus nummularius Lam. -- not accepted
  Tithymalus nutans (Lag.) Samp. -- not accepted
  Tithymalus oblongatus (Griseb.) Soják -- not accepted
  Tithymalus oblongifolius (K. Koch) Klotzsch & Garcke -- not accepted
  Tithymalus obovata Raf. -- not accepted
  Tithymalus obtusatus (Pursh) Klotzsch & Garcke -- not accepted
  Tithymalus obtusifolius Klotzsch & Garcke -- not accepted
  Tithymalus officinarum (L.) H. Karst. -- not accepted
  Tithymalus oidorrhizus (Pojark.) Soják -- not accepted
  Tithymalus olsson-sefferi (Millsp.) Croizat -- not accepted
  Tithymalus orientalis (L.) Hill -- not accepted
  Tithymalus orphanidis (Boiss.) Soják -- not accepted
  Tithymalus oschtenicus (Galushko) Galushko -- not accepted
  Tithymalus osyrideus (Boiss.) Soják -- not accepted
  Tithymalus ovatus E. Mey. ex Klotzsch & Garcke -- not accepted
  Tithymalus oxyodontus (Boiss.) Soják -- not accepted
  Tithymalus pachyrrhizus (Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus padifolius (L.) Croizat -- not accepted
  Tithymalus pallasii (Turcz.) Klotzsch & Garcke -- not accepted
  Tithymalus palmeri (Engelm. ex S. Watson) Dayton -- not accepted
  Tithymalus palmyrenus (Mouterde) Soják -- not accepted
  Tithymalus palustris (L.) Garsault -- not accepted
  Tithymalus pamiricus Prokh. -- not accepted
  Tithymalus pampeanus (Speg.) Soják -- not accepted
  Tithymalus panaceus (Webb & Berthel.) Klotzsch & Garcke -- not accepted
  Tithymalus pancicii (Beck) Soják -- not accepted
  Tithymalus paniculatus Raf. -- not accepted
  Tithymalus panjutinii (Grossh.) Soják -- not accepted
  Tithymalus pannonicus (Host) Á. Löve & D. Löve -- not accepted
  Tithymalus papillosus Klotzsch & Garcke -- not accepted
  Tithymalus papillosus (A. St.-Hil.) Soják -- not accepted
  Tithymalus paralias (L.) Hill -- not accepted
  Tithymalus parasiticus (Boiss. ex Klotzsch & Garcke) Croizat -- not accepted
  Tithymalus parvulus Klotzsch & Garcke -- not accepted
  Tithymalus parvulus (Delile) Schweinf. ex Schweinf. & Asch. -- not accepted
  Tithymalus pauciflorus Bubani -- not accepted
  Tithymalus pedersenii (Subils) Soják -- not accepted
  Tithymalus pekinensis (Rupr.) H. Hara -- not accepted
  Tithymalus pekinensis var. watanabei (Makino) Honda -- not accepted
  Tithymalus peltatus (Roxb.) Soják -- not accepted
  Tithymalus penicillatus Millsp. -- not accepted
  Tithymalus peplidion (Engelm.) Small -- not accepted
  Tithymalus peplis (L.) Scop. -- not accepted
  Tithymalus peploides (Gouan) Klotzsch & Garcke -- not accepted
  Tithymalus peplus (L.) Hill -- not accepted
  Tithymalus peplus ssp. calabricus (Huter, Porta & Rigo) Soják -- not accepted
  Tithymalus peplus ssp. maritimus (Boiss.) Soják -- not accepted
  Tithymalus peplus ssp. peploides (Gouan) Soják -- not accepted
  Tithymalus perbracteatus (Gage) Soják -- not accepted
  Tithymalus peritropoides (Millsp.) Croizat -- not accepted
  Tithymalus persepolitanus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus pestalozzae (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus petanophyllus Croizat -- not accepted
  Tithymalus petiolaris (Sims) Haw. -- not accepted
  Tithymalus petiolatus (Banks & Sol.) Soják -- not accepted
  Tithymalus petitianus (A. Rich.) Klotzsch & Garcke -- not accepted
  Tithymalus petraeus (Brandegee) Croizat -- not accepted
  Tithymalus petrophilus (C.A. Mey.) Soják -- not accepted
  Tithymalus philippianus Klotzsch & Garcke -- not accepted
  Tithymalus philorus Cockerell -- not accepted
  Tithymalus philorus f. dichotomus Daniels -- not accepted
  Tithymalus phymatospermus (Boiss. & Gaill.) Soják -- not accepted
  Tithymalus phymatospermus ssp. cernuus (Coss. & Durieu ex Boiss.) Soják -- not accepted
  Tithymalus physocaulos (Mouterde) Soják -- not accepted
  Tithymalus pictus (Jacq.) Haw. -- not accepted
  Tithymalus pilosus (L.) Hill -- not accepted
  Tithymalus piluliferus (L.) Moench -- not accepted
  Tithymalus pineus (L.) Klotzsch & Garcke -- not accepted
  Tithymalus pinkavanus (M.C. Johnst.) Soják -- not accepted
  Tithymalus piscatorius (Aiton) Haw. -- not accepted
  Tithymalus pisidicus (Hub.-Mor. & M.S. Khan) Soják -- not accepted
  Tithymalus pithyusa (L.) Scop. -- not accepted
  Tithymalus pithyusa ssp. cupanii (Guss. ex Bertol.) Soják -- not accepted
  Tithymalus platyphyllos ssp. literatus (Jacq.) Chrtek & Krísa -- not accepted
  Tithymalus plebeius (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus poecilophyllus Prokh. -- not accepted
  Tithymalus polycaulis (Boiss. & Hohen.) Klotzsch & Garcke -- not accepted
  Tithymalus polygalifolius (Boiss. & Reut.) Soják -- not accepted
  Tithymalus polygalifolius ssp. mariolensis (Rouy) Soják -- not accepted
  Tithymalus polytimeticus Prokh. -- not accepted
  Tithymalus portlandicus (L.) Hill -- not accepted
  Tithymalus portulacoides (L.) Standl. -- not accepted
  Tithymalus potaninii (Prokh.) Prokh. -- not accepted
  Tithymalus pouzolzii Bubani -- not accepted
  Tithymalus pringlei (B.L. Rob.) Croizat -- not accepted
  Tithymalus procerus (M. Bieb.) Klotzsch & Garcke -- not accepted
  Tithymalus proliferus (Buch.-Ham. ex D. Don) Soják -- not accepted
  Tithymalus promecocarpus (P.H. Davis) Soják -- not accepted
  Tithymalus prostratus (Aiton) Samp. -- not accepted
  Tithymalus prunifolius (Jacq.) Haw. -- not accepted
  Tithymalus przewalskii (Prokh.) Soják -- not accepted
  Tithymalus pseudoapios (Maire & Weiller) Soják -- not accepted
  Tithymalus pseudofalcatus (Chiov.) Soják -- not accepted
  Tithymalus pseudopeplus (Speg.) Soják -- not accepted
  Tithymalus pseudosikkimensis Hurus. & Yu. Tanaka -- not accepted
  Tithymalus pseudosororius Prokh. -- not accepted
  Tithymalus pterococcus (Brot.) Klotzsch & Garcke -- not accepted
  Tithymalus pubescens (Vahl) Samp. -- not accepted
  Tithymalus pumilus (Sibth. & Sm.) Klotzsch & Garcke -- not accepted
  Tithymalus punctatus (Delile) Soják -- not accepted
  Tithymalus puniceus (Sw.) Haw. -- not accepted
  Tithymalus purpureus Lam. -- not accepted
  Tithymalus purpusii (Brandegee) Croizat -- not accepted
  Tithymalus pygmaeus (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus pyrenaeus Bubani -- not accepted
  Tithymalus raphanorrhizus Millsp. -- not accepted
  Tithymalus rapulum (Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus reboudianus (Coss. ex Batt. & Trab.) Soják -- not accepted
  Tithymalus rechingeri (Greuter) Soják -- not accepted
  Tithymalus regis-jubae (Webb & Berthel.) Klotzsch & Garcke -- not accepted
  Tithymalus repandus Haw. -- not accepted
  Tithymalus repens (K. Koch) Klotzsch & Garcke -- not accepted
  Tithymalus repetitus (Hochst. ex A. Rich.) Klotzsch & Garcke -- not accepted
  Tithymalus resiniferus (O. Berg) H. Karst. -- not accepted
  Tithymalus retusus (Forssk.) Klotzsch & Garcke -- not accepted
  Tithymalus reuterianus (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus revolutus Klotzsch & Garcke -- not accepted
  Tithymalus rhabdotospermus (Radcl.-Sm.) Holub -- not accepted
  Tithymalus rhytidospermus (Boiss. & Balansa) Soják -- not accepted
  Tithymalus riae (Pax & K. Hoffm.) Soják -- not accepted
  Tithymalus rigidus (M. Bieb.) Soják -- not accepted
  Tithymalus rimarum (Coss. & Balansa) Soják -- not accepted
  Tithymalus robbiae (Turrill) Soják -- not accepted
  Tithymalus robustus (Engelm.) Small -- not accepted
  Tithymalus roemerianus (Scheele) Small -- not accepted
  Tithymalus roschanicus Ikonn. -- not accepted
  Tithymalus rosea (Retz.) Raf. -- not accepted
  Tithymalus rosularis (Fed.) Pazij -- not accepted
  Tithymalus rothianus (Spreng.) Klotzsch & Garcke -- not accepted
  Tithymalus rotundifolius Lam. -- not accepted
  Tithymalus ruber (Cav.) Bubani -- not accepted
  Tithymalus rupestris Lam. -- not accepted
  Tithymalus rupestris (Ledeb.) Klotzsch & Garcke -- not accepted
  Tithymalus rupicola (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus ruscinonensis (Boiss.) Soják -- not accepted
  Tithymalus sahendi (Bornm.) Soják -- not accepted
  Tithymalus salicifolius (Host) Klotzsch & Garcke -- not accepted
  Tithymalus sanasunitensis (Hand.-Mazz.) Soják -- not accepted
  Tithymalus sarissophyllus Croizat -- not accepted
  Tithymalus saxatilis (Jacq.) Raf. -- not accepted
  Tithymalus saxicola (Radcl.-Sm.) Soják -- not accepted
  Tithymalus schickendantzii (Hieron.) Soják -- not accepted
  Tithymalus schimperianus (Scheele) Klotzsch & Garcke -- not accepted
  Tithymalus schizoceras (Boiss.) Klotzsch & Garcke -- not accepted
  Tithymalus schizolobus (Engelm.) Norton -- not accepted
  Tithymalus schottii Klotzsch & Garcke -- not accepted
  Tithymalus schugnanicus (B. Fedtsch.) Prokh. -- not accepted
  Tithymalus segetalis (L.) Hill -- not accepted
  Tithymalus segetalis ssp. pineus (L.) Soják -- not accepted
  Tithymalus seguieri Scop. -- not accepted
  Tithymalus seguierianus (Neck.) Prokh. -- not accepted
  Tithymalus seguierianus ssp. loiseleurii (Rouy) Soják -- not accepted
  Tithymalus seguierianus ssp. minor (Duby) Chrtek & Krísa -- not accepted
  Tithymalus seguierianus ssp. nicicianus (Borbás ex Novák) Chrtek & Krísa -- not accepted
  Tithymalus seguierianus ssp. saxicola (Velen.) Chrtek & Krísa -- not accepted
  Tithymalus selloi Klotzsch & Garcke -- not accepted
  Tithymalus semiperfoliatus (Viv.) Klotzsch & Garcke -- not accepted
  Tithymalus semivillosus Prokh. -- not accepted
  Tithymalus sendaicus (Makino) H. Hara -- not accepted
  Tithymalus sera-comans (Bubani) Bubani -- not accepted
  Tithymalus serotina Raf. -- not accepted
  Tithymalus serratus Gilib. -- not accepted
  Tithymalus serratus (L.) Hill -- not accepted
  Tithymalus serrulatus (Thuill.) Holub -- not accepted
  Tithymalus sessiliflorus (Roxb.) Klotzsch & Garcke -- not accepted
  Tithymalus sewerzowii Prokh. -- not accepted
  Tithymalus shetoensis (Pax & K. Hoffm.) Soják -- not accepted
  Tithymalus shouanensis (H. Keng) S.S. Ying -- not accepted
  Tithymalus sibthorpii (Boiss.) Soják -- not accepted
  Tithymalus sieboldianus (C. Morren & Decne.) H. Hara -- not accepted
  Tithymalus sikkimensis (Boiss.) Hurus. & Yu. Tanaka -- not accepted
  Tithymalus silenifolius Haw. -- not accepted
  Tithymalus sintenisii (Boiss. ex Freyn) Soják -- not accepted
  Tithymalus smallii (Millsp.) Small -- not accepted
  Tithymalus sogdianus (Popov) Prokh. -- not accepted
  Tithymalus sojakii (Chrtek & Krísa) Chrtek & Krísa -- not accepted
  Tithymalus soongaricus (Boiss.) Prokh. -- not accepted
  Tithymalus soongaricus ssp. aristatus (Schmalh.) Soják -- not accepted
  Tithymalus soongaricus ssp. lamprocarpus (Prokh.) Soják -- not accepted
  Tithymalus sororius (Schrenk) Klotzsch & Garcke -- not accepted
  Tithymalus spathulatus (Lam.) W.A. Weber -- not accepted
  Tithymalus spectabilis (B.L. Rob.) Croizat -- not accepted
  Tithymalus sphaerospermus (Shuttlew. ex Boiss.) Small -- not accepted
  Tithymalus spinidens Prokh. -- not accepted
  Tithymalus spinosus (L.) Raf. -- not accepted
  Tithymalus splendens (Bojer ex Hook.) M. Gómez -- not accepted
  Tithymalus squamigerus (Loisel.) Soják -- not accepted
  Tithymalus squamigerus ssp. rupicola (Boiss.) Soják -- not accepted
  Tithymalus squamosus (Willd.) Klotzsch & Garcke -- not accepted
  Tithymalus stenophyllus Klotzsch & Garcke -- not accepted
  Tithymalus stocksianus (Boiss.) Soják -- not accepted
  Tithymalus stracheyi (Boiss.) Hurus. & Yu. Tanaka -- not accepted
  Tithymalus striatus (Thunb.) Klotzsch & Garcke -- not accepted
  Tithymalus strictus (L.) Klotzsch & Garcke -- not accepted
  Tithymalus stygianus (H.C. Watson) Soják -- not accepted
  Tithymalus subamplexicaulis (Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus subcordatus Klotzsch & Garcke -- not accepted
  Tithymalus subcrenatus Klotzsch & Garcke -- not accepted
  Tithymalus subpavonianus Croizat -- not accepted
  Tithymalus subpubens (Engelm. ex S. Watson) Norton -- not accepted
  Tithymalus sulcatus (Lens ex Loisel.) Bubani -- not accepted
  Tithymalus sylvaticus (L.) Hill -- not accepted
  Tithymalus syspirensis (K. Koch) Klotzsch & Garcke -- not accepted
  Tithymalus szechuanicus (Pax & K. Hoffm.) Soják -- not accepted
  Tithymalus szovitsii (Fisch. & C.A. Mey.) Klotzsch & Garcke -- not accepted
  Tithymalus talastavicus Prokh. -- not accepted
  Tithymalus tanaiticus (Pacz.) Galushko -- not accepted
  Tithymalus tanguticus (Prokh.) Prokh. -- not accepted
  Tithymalus tarokoensis (Hayata) Soják -- not accepted
  Tithymalus tauricola (Prokh.) Holub -- not accepted
  Tithymalus taurinensis (All.) Klotzsch & Garcke -- not accepted
  Tithymalus tchen-ngoi Soják -- not accepted
  Tithymalus teheranicus (Boiss.) Soják -- not accepted
  Tithymalus tehuacanus (Brandegee) Croizat -- not accepted
  Tithymalus telephioides (Chapm.) Small -- not accepted
  Tithymalus tenuifolius (Lam.) Klotzsch & Garcke -- not accepted
  Tithymalus terracinus (L.) Klotzsch & Garcke -- not accepted
  Tithymalus tetraporus (Engelm.) Small -- not accepted
  Tithymalus thamnoides (Boiss.) Soják -- not accepted
  Tithymalus thompsonii (Holmboe) Soják -- not accepted
  Tithymalus thomsonianus (Boiss.) Soják -- not accepted
  Tithymalus thwaitesii Klotzsch & Garcke -- not accepted
  Tithymalus thyrsoideus (Boiss.) Soják -- not accepted
  Tithymalus tianshanicus Prokh. -- not accepted
  Tithymalus tibeticus (Boiss.) Prokh. -- not accepted
  Tithymalus tithymaloides (L.) Croizat -- not accepted
  Tithymalus togakusensis (Hayata) H. Hara -- not accepted
  Tithymalus tomentellus (B.L. Rob. & Greenm.) Croizat -- not accepted
  Tithymalus tommasinianus (Bertol.) Soják -- not accepted
  Tithymalus tommasinianus ssp. virgultosus (Klokov) Soják -- not accepted
  Tithymalus tommasinianus ssp. waldsteinii (Soják) Soják -- not accepted
  Tithymalus transoxanus Prokh. -- not accepted
  Tithymalus transtaganus (Boiss.) Samp. -- not accepted
  Tithymalus tranzschelii Prokh. -- not accepted
  Tithymalus trapezoidalis (Viv.) Klotzsch & Garcke -- not accepted
  Tithymalus trichotomus (Kunth) Klotzsch & Garcke -- not accepted
  Tithymalus triflorus (Schott, Nyman & Kotschy) Soják -- not accepted
  Tithymalus triflorus ssp. kerneri (Huter ex A. Kern.) Soják -- not accepted
  Tithymalus trinervius Klotzsch & Garcke -- not accepted
  Tithymalus triodontus Prokh. -- not accepted
  Tithymalus tristis (Besser) Klotzsch & Garcke -- not accepted
  Tithymalus truncatus Klotzsch & Garcke -- not accepted
  Tithymalus tshuiensis Prokh. -- not accepted
  Tithymalus tuberosus (L.) Hill -- not accepted
  Tithymalus tuckeyanus (Steud. ex Webb) Bolle ex Klotzsch & Garcke -- not accepted
  Tithymalus turczaninowii (Kar. & Kir.) Klotzsch & Garcke -- not accepted
  Tithymalus turkestanicus (Regel) Prokh. -- not accepted
  Tithymalus uliginosus (Welw. ex Boiss.) Samp. -- not accepted
  Tithymalus undulatus (M. Bieb.) Klotzsch & Garcke -- not accepted
  Tithymalus unilateralis (Blakelock) Holub -- not accepted
  Tithymalus uralensis (Fisch. ex Link) Prokh. -- not accepted
  Tithymalus valdevillosocarpus (Arvat & Nyár.) Chrtek & Krísa -- not accepted
  Tithymalus vallinianus (Belli) Soják -- not accepted
  Tithymalus variabilis (Ces.) Klotzsch & Garcke -- not accepted
  Tithymalus variegatus (Sims) Haw. -- not accepted
  Tithymalus velenovskyi (Bornm.) Soják -- not accepted
  Tithymalus veneris (M.S. Khan) Soják -- not accepted
  Tithymalus venetus (Willd.) Klotzsch & Garcke -- not accepted
  Tithymalus verrucosus (L.) Hill -- not accepted
  Tithymalus villicus Croizat -- not accepted
  Tithymalus villosus (Waldst. & Kit. ex Willd.) Pacher -- not accepted
  Tithymalus villosus var. trichocarpus (W.D.J. Koch) Dostál -- not accepted
  Tithymalus villosus var. tuberculatus (W.D.J. Koch) Dostál -- not accepted
  Tithymalus virgatus (Desf.) Haw. -- not accepted
  Tithymalus virgatus (Haw.) Klotzsch & Garcke -- not accepted
  Tithymalus virgultosus (Klokov) Holub -- not accepted
  Tithymalus volgensis (Krysht.) Prokh. -- not accepted
  Tithymalus volhynicus (Besser ex Racib.) Holub -- not accepted
  Tithymalus volkii (Rech. f.) Soják -- not accepted
  Tithymalus waldsteinii Soják -- not accepted
  Tithymalus wallichii (Hook. f.) Soják -- not accepted
  Tithymalus welwitschii (Boiss. & Reut.) Klotzsch & Garcke -- not accepted
  Tithymalus woronowii (Grossh.) Prokh. -- not accepted
  Tithymalus wulfenii (Hoppe ex W. Koch) Soják -- not accepted
  Tithymalus X angustatus (Rochel) Soják -- not accepted
  Tithymalus X angustifrons (Borbás) Holub -- not accepted
  Tithymalus X bazargicus (Prodán) Soják -- not accepted
  Tithymalus X budensis (T. Simon) Chrtek & Krísa -- not accepted
  Tithymalus X gayeri (Borós & Soó) Holub -- not accepted
  Tithymalus X jablonskianus (Polatschek) Holub -- not accepted
  Tithymalus X macinensis (Prodán) Soják -- not accepted
  Tithymalus X paradoxus (Schur) Holub -- not accepted
  Tithymalus X peisonis (Rech. f.) Soják -- not accepted
  Tithymalus X popovii (Rotschild) Soják -- not accepted
  Tithymalus X procopianii (Savul. & Rayss) Soják -- not accepted
  Tithymalus X pseudoesula (Schur) Dostál -- not accepted
  Tithymalus X pseudolucidus (Schur) Dostál -- not accepted
  Tithymalus X somboriensis (Prodán) Dostál -- not accepted
  Tithymalus X sooi (T. Simon) Soják -- not accepted
  Tithymalus X wagneri (Soó) Holub -- not accepted
  Tithymalus X wimmerianus (J. Wagner) Dostál -- not accepted
  Tithymalus yamashitae (Kitam.) Soják -- not accepted
  Tithymalus yaroslavii (Poljakov) Soják -- not accepted
  Tithymalus yemenicus (Boiss.) Soják -- not accepted
  Tithymalus zeravschanicus (Regel) Prokh. -- not accepted
  Tithymalus zeyheri Klotzsch & Garcke -- not accepted
  Torfasidis Raf. -- not accepted
  Torfasidis canariensis (L.) Raf. -- not accepted
  Tragia L. -- accepted -- noseburn
  Tragia involucrata L. -- accepted
  Tragia plukenetii Radcl.-Sm. -- accepted
  Tragia volubilis L. -- accepted -- fireman
  Treisia Haw. -- not accepted
  Treisia clava (Jacq.) Haw. -- not accepted
  Treisia erosa (Willd.) Haw. -- not accepted
  Treisia hystrix (Jacq.) Haw. -- not accepted
  Treisia tuberculata (Jacq.) Haw. -- not accepted
  Triadica Lour. -- accepted -- tallowtree, Chinese tallow
  Triadica sebifera (L.) Small -- accepted -- tallowtree, Chinese tallow
  Trichosterigma Klotzsch & Garcke -- not accepted
  Trichosterigma benedictum (Greene) Millsp. -- not accepted
  Trichosterigma californicum (Benth.) Klotzsch & Garcke -- not accepted
  Trichosterigma fulgens (Karw. ex Klotzsch) Klotzsch & Garcke -- not accepted
  Trichosterigma hindsianum (Benth.) Klotzsch & Garcke -- not accepted
  Trichosterigma miserum (Benth.) Klotzsch & Garcke -- not accepted
  Trigonostemon Blume -- accepted
  Trigonostemon longipedunculatus (Elmer) Elmer -- accepted
  Tumalis Raf. -- not accepted
  Tumalis bojeri (Hook.) Raf. -- not accepted
  Vallaris Raf. -- not accepted
  Vallaris fimbriata (Scop.) Raf. -- not accepted
  Vallaris missurica (Raf.) Raf. -- not accepted
  Vallaris portulacoides (L.) Raf. -- not accepted
  Vallaris X uniflora (Raf.) Raf. -- not accepted
  Ventenatia Tratt. -- not accepted
  Ventenatia bracteata (Jacq.) Tratt. -- not accepted
  Xamesike Raf. -- not accepted
  Xamesike deltifolia Raf. -- not accepted
  Xamesike depressa (Torr. ex Spreng.) Raf. -- not accepted
  Xamesike gracilis (Elliott) Raf. -- not accepted
  Xamesike littoralis Raf. -- not accepted
  Xamesike maculata (L.) Raf. -- not accepted
  Xamesike palestina Raf. -- not accepted
  Xamesike polygonifolia (L.) Raf. -- not accepted
  Xamesike scordiifolia (Jacq.) Raf. -- not accepted
  Xamesike supina (Raf.) Raf. -- not accepted
  Xamesike vermiculata (Raf.) Raf. -- not accepted
  Xamesike vulgaris Raf. -- not accepted
  Xamesike xamobala Raf. -- not accepted
  Zalitea Raf. -- not accepted
  Zalitea linearis Raf. -- not accepted
  Zygophyllidium Small -- not accepted
  Zygophyllidium bilobatum (Engelm.) Standl. -- not accepted
  Zygophyllidium delicatulum Wooton & Standl. -- not accepted
  Zygophyllidium hexagonum (Nutt. ex Spreng.) Small -- not accepted
  Zygophyllidium macropodoides (B.L. Rob. & Greenm.) Arthur -- not accepted
  Zygophyllidum biforme (S. Watson) Arthur -- not accepted
  Zygophyllidum delicatulum (Boiss.) Wooton & Standl. -- not accepted
  Zygophyllidum exstipulatum (Engelm.) Wooton & Standl. -- not accepted
   

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