| |
| Kingdom Plantae |
| |
Abies subalpina Engelm. – not accepted
|
| |
Agave deserti Engelm. – accepted – desert agave, Maguey de Desierto
|
| |
Agave deserti ssp. deserti Engelm. – not accepted – desert agave
|
| |
Agave deserti var. deserti Engelm. – accepted – desert agave
|
| |
Agave palmeri Engelm. – accepted – Palmer's century plant, Maguey de tlalcoyote, Palmer agave, Palmer century plant
|
| |
Agave parryi Engelm. – accepted – Parry's agave, Parry agave, Mezcal yapavai
|
| |
Agave parryi ssp. parryi Engelm. – accepted – Parry's agave, Huachuca agave, rough agave
|
| |
Agave parryi var. parryi Engelm. – not accepted – Parry's agave
|
| |
Agave schottii Engelm. – accepted – Schott's century plant, Maguey puercoespín, Schott agave
|
| |
Agave schottii var. schottii Engelm. – accepted – Schott's century plant, Schott agave
|
| |
Agave shawii Engelm. – accepted – coastal agave, Shaw's agave, Maguey primavera
|
| |
Agave shawii var. shawii Engelm. – accepted – coastal agave
|
| |
Agave utahensis Engelm. – accepted – Utah agave
|
| |
Agave utahensis var. utahensis Engelm. – accepted – Utah agave
|
| |
Arceuthobium campylopodum Engelm. – accepted – western dwarf mistletoe
|
| |
Arceuthobium cryptopodum Engelm. – not accepted
|
| |
Arceuthobium divaricatum Engelm. – accepted – pinyon dwarf mistletoe
|
| |
Arceuthobium douglasii Engelm. – accepted – Douglas fir dwarf mistletoe
|
| |
Arceuthobium occidentale Engelm. – not accepted – gray pine dwarf mistletoe, digger pine dwarf mistletoe
|
| |
Astephanus utahensis Engelm. – not accepted
|
| |
Atheropogon papillosus Engelm. – not accepted
|
| |
Bouvardia glaberrima Engelm. – not accepted
|
| |
Buchloe Engelm. – not accepted – buffalograss
|
| |
Callitriche austinii Engelm. – not accepted
|
| |
Campanula scabrella Engelm. – accepted – rough bellflower
|
| |
Castilleja indivisa Engelm. – accepted – Texas paintbrush, entireleaf Indian paintbrush
|
| |
Cereus emoryi Engelm. – not accepted
|
| |
Cereus fendleri Engelm. – not accepted
|
| |
Cereus giganteus Engelm. – not accepted – saguaro
|
| |
Cereus greggii Engelm. – not accepted
|
| |
Cereus greggii var. greggii Engelm. – not accepted – desert nightblooming cereus
|
| |
Cereus greggii var. transmontanus Engelm. – not accepted
|
| |
Cereus paucispinus Engelm. – not accepted
|
| |
Cereus pectinatus var. rigidissimus Engelm. – not accepted
|
| |
Cereus phoeniceus Engelm. – not accepted
|
| |
Cereus schottii Engelm. – not accepted
|
| |
Cereus stramineus Engelm. – not accepted
|
| |
Cereus thurberi Engelm. – not accepted
|
| |
Cereus viridiflorus var. cylindricus Engelm. – not accepted
|
| |
Cirsium filipendulum Engelm. – not accepted
|
| |
Clematis coccinea Engelm. – not accepted
|
| |
Corydalis crystallina Engelm. – accepted – mealy fumewort, mealy corydalis
|
| |
Corydalis curvisiliqua Engelm. – accepted – curvepod corydalis, curvepod fumewort
|
| |
Corydalis curvisiliqua ssp. curvisiliqua Engelm. – accepted – curvepod fumewort
|
| |
Corydalis montana Engelm. – not accepted
|
| |
Croton corymbulosus Engelm. – not accepted
|
| |
Cuscuta applanata Engelm. – accepted – Gila River dodder
|
| |
Cuscuta californica var. apiculata Engelm. – accepted – chaparral dodder
|
| |
Cuscuta californica var. breviflora Engelm. – not accepted – California dodder, western dodder, chaparral dodder
|
| |
Cuscuta cephalanthi Engelm. – accepted – butterbush dodder, buttonbush dodder
|
| |
Cuscuta coryli Engelm. – accepted – hazel dodder
|
| |
Cuscuta corylii Engelm. – not accepted
|
| |
Cuscuta cuspidata Engelm. – accepted – cusp dodder
|
| |
Cuscuta denticulata Engelm. – accepted – small-tooth dodder, desert dodder
|
| |
Cuscuta denticulata var. denticulata Engelm. – accepted – desert dodder, smalltooth dodder
|
| |
Cuscuta exaltata Engelm. – accepted – tall dodder
|
| |
Cuscuta gronovii var. calyptrata Engelm. – accepted – scaldweed
|
| |
Cuscuta gronovii var. curta Engelm. – not accepted
|
| |
Cuscuta gronovii var. latiflora Engelm. – not accepted
|
| |
Cuscuta leptantha Engelm. – accepted – slender dodder
|
| |
Cuscuta mitriformis Engelm. – accepted – joint dodder, Cochise dodder
|
| |
Cuscuta obtusiflora var. glandulosa Engelm. – accepted – Peruvian dodder
|
| |
Cuscuta odontolepis Engelm. – accepted – Santa Rita dodder, Santa Rita Mountain dodder
|
| |
Cuscuta pentagona Engelm. – accepted – lespedeza dodder, bush-clover dodder, field dodder, fiveangled dodder
|
| |
Cuscuta pentagona var. calycina Engelm. – not accepted
|
| |
Cuscuta pentagona var. pentagona Engelm. – not accepted – fiveangled dodder, bush-clover dodder, fiveangle dodder, field dodder
|
| |
Cuscuta polygonorum Engelm. – accepted – smartweed dodder
|
| |
Cuscuta salina Engelm. – accepted – goldenthread, saltmarsh dodder
|
| |
Cuscuta salina var. salina Engelm. – accepted – saltmarsh dodder
|
| |
Cuscuta squamata Engelm. – accepted – scaleflower dodder
|
| |
Dicentra ochroleuca Engelm. – accepted – yellow bleedingheart, yellow bleeding hearts
|
| |
Dithyrea wislizeni Engelm. – not accepted
|
| |
Echinocactus bicolor var. schottii Engelm. – not accepted
|
| |
Echinocactus brevihamatus Engelm. – not accepted
|
| |
Echinocactus intertextus Engelm. – not accepted
|
| |
Echinocactus intertextus var. dasyacanthus Engelm. – not accepted
|
| |
Echinocactus lecontei Engelm. – not accepted
|
| |
Echinocactus parryi Engelm. – accepted
|
| |
Echinocactus pubispinus Engelm. – not accepted
|
| |
Echinocactus setispinus Engelm. – not accepted
|
| |
Echinocactus simpsonii Engelm. – not accepted
|
| |
Echinocactus uncinatus var. wrightii Engelm. – not accepted
|
| |
Echinocactus unguispinus Engelm. – not accepted
|
| |
Echinocactus whipplei var. spinosior Engelm. – not accepted
|
| |
Echinocactus wislizeni Engelm. – not accepted
|
| |
Echinocereus Engelm. – accepted – hedgehog cactus
|
| |
Echinocereus adustus Engelm. – accepted
|
| |
Echinocereus adustus ssp. adustus Engelm. – accepted
|
| |
Echinocereus coccineus Engelm. – accepted – Órgano-pequeño de espinas escarlatas, scarlet hedgehog cactus
|
| |
Echinocereus coccineus ssp. coccineus Engelm. – accepted
|
| |
Echinocereus coccineus var. coccineus Engelm. – not accepted – scarlet hedgehog cactus, Bisbee cactus
|
| |
Echinocereus dasyacanthus Engelm. – accepted – Órgano-pequeño arcoiris de Texas, spiny hedgehog cactus
|
| |
Echinocereus dasyacanthus ssp. dasyacanthus Engelm. – not accepted
|
| |
Echinocereus enneacanthus Engelm. – accepted – Órgano-pequeño alicoche real, pitaya, smallspine pitaya
|
| |
Echinocereus enneacanthus ssp. enneacanthus Engelm. – accepted
|
| |
Echinocereus enneacanthus var. enneacanthus Engelm. – not accepted – pitaya
|
| |
Echinocereus polyacanthus Engelm. – accepted – Órgano-pequeño enmarañado, Mojave mound cactus
|
| |
Echinocereus polyacanthus ssp. polyacanthus Engelm. – not accepted
|
| |
Echinocereus triglochidiatus Engelm. – accepted – Órgano-pequeño copa de vino, kingcup cactus, claretcup hedgehog, Mojave mound cactus
|
| |
Echinocereus triglochidiatus ssp. triglochidiatus Engelm. – not accepted
|
| |
Echinocereus triglochidiatus var. triglochidiatus Engelm. – not accepted – kingcup cactus
|
| |
Echinocereus viridiflorus Engelm. – accepted – nylon hedgehog cactus, green pitaya
|
| |
Echinocereus viridiflorus ssp. viridiflorus Engelm. – accepted
|
| |
Echinocereus viridiflorus var. viridiflorus Engelm. – not accepted – nylon hedgehog cactus
|
| |
Echinodorus parvulus Engelm. – not accepted – mudbabies
|
| |
Equisetum affine Engelm. – not accepted
|
| |
Eriogonum alpinum Engelm. – accepted – Trinity buckwheat
|
| |
Eriogonum atrorubens Engelm. – accepted – red buckwheat, buckwheat
|
| |
Eriogonum atrorubens var. atrorubens Engelm. – accepted – red buckwheat
|
| |
Eryngium heterophyllum Engelm. – accepted – Wright's eryngo
|
| |
Euphorbia acuta Engelm. – accepted – Pointed sandmat
|
| |
Euphorbia angusta Engelm. – accepted – Blackfoot sandmat, narrow-leaf spurge
|
| |
Euphorbia arizonica Engelm. – accepted – Arizona sandmat
|
| |
Euphorbia barbellata Engelm. – not accepted
|
| |
Euphorbia bifurcata Engelm. – accepted – forked spurge
|
| |
Euphorbia bilobata Engelm. – accepted – blackseed spurge, black-seed spurge
|
| |
Euphorbia brachycera Engelm. – accepted – horned spurge, shorthorn spurge
|
| |
Euphorbia capitellata Engelm. – accepted – head sandmat, capitate sandmat, head spurge
|
| |
Euphorbia cinerascens Engelm. – accepted – ashy sandmat
|
| |
Euphorbia cinerascens var. appendiculata Engelm. – not accepted
|
| |
Euphorbia colorata Engelm. – accepted
|
| |
Euphorbia crenulata Engelm. – accepted – Chinese caps, Chinesecaps
|
| |
Euphorbia curtisii Engelm. – accepted – Curtis' spurge, sandhills spurge
|
| |
Euphorbia dentata var. cuphosperma Engelm. – not accepted
|
| |
Euphorbia dentata var. rigida Engelm. – not accepted
|
| |
Euphorbia dictyosperma var. leiococca Engelm. – not accepted
|
| |
Euphorbia dictyosperma var. mexicana Engelm. – not accepted
|
| |
Euphorbia dioeca var. indivisa Engelm. – not accepted
|
| |
Euphorbia esuliformis var. subdentata Engelm. – not accepted
|
| |
Euphorbia exstipulata Engelm. – accepted – squareseed spurge, square-seed spurge, Clark Mountain spurge
|
| |
Euphorbia exstipulata var. exstipulata Engelm. – not accepted – squareseed spurge, Clark Mountain spurge
|
| |
Euphorbia florida Engelm. – accepted – Chiricahua Mountain sandmat
|
| |
Euphorbia geyeri Engelm. – accepted – Geyer's sandmat, Geyer's spurge
|
| |
Euphorbia geyeri var. geyeri Engelm. – accepted – Geyer's sandmat, Geyer's spurge
|
| |
Euphorbia glyptosperma Engelm. – accepted – ridgeseed spurge, ribseed sandmat
|
| |
Euphorbia glyptosperma var. tenerrima Engelm. – not accepted
|
| |
Euphorbia gymnoclada Engelm. – not accepted
|
| |
Euphorbia heterophylla var. graminifolia Engelm. – not accepted
|
| |
Euphorbia hypericifolia var. communis Engelm. – not accepted
|
| |
Euphorbia incisa Engelm. – not accepted – Mojave spurge
|
| |
Euphorbia incisa var. incisa Engelm. – not accepted – Mojave spurge
|
| |
Euphorbia lata Engelm. – accepted – hoary sandmat, broadleaf spurge
|
| |
Euphorbia lurida Engelm. – accepted – San Francisco Mountain spurge, woodland spurge
|
| |
Euphorbia melanadenia var. subinappendiculata Engelm. – not accepted
|
| |
Euphorbia montana Engelm. – not accepted
|
| |
Euphorbia montana var. gracilior Engelm. – not accepted
|
| |
Euphorbia montana var. robusta Engelm. – not accepted
|
| |
Euphorbia multicaulis Engelm. – not accepted
|
| |
Euphorbia parryi Engelm. – accepted – Parry's sandmat, dune spurge
|
| |
Euphorbia pediculifera Engelm. – accepted – Carrizo Mountain sandmat
|
| |
Euphorbia pediculifera var. pediculifera Engelm. – accepted
|
| |
Euphorbia peplidion Engelm. – accepted – low spurge
|
| |
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 pilulifera var. discolor Engelm. – not accepted
|
| |
Euphorbia pycnanthema Engelm. – not accepted
|
| |
Euphorbia revoluta Engelm. – accepted – threadstem sandmat, threadstem spurge
|
| |
Euphorbia schizoloba Engelm. – accepted – Mojave spurge
|
| |
Euphorbia serrula Engelm. – accepted – sawtooth sandmat
|
| |
Euphorbia stictospora Engelm. – accepted – slimseed sandmat, mat spurge, narrow-seeded spurge
|
| |
Euphorbia stictospora var. stictospora Engelm. – accepted
|
| |
Euphorbia tetrapora Engelm. – accepted – weak spurge
|
| |
Euphorbia trachysperma Engelm. – accepted – San Pedro River sandmat
|
| |
Eysenhardtia spinosa Engelm. – accepted – spiny kidneywood
|
| |
Fouquieria splendens Engelm. – accepted – ocotillo
|
| |
Gaura suffulta Engelm. – not accepted – kisses, roadside gaura
|
| |
Gaura suffulta ssp. suffulta Engelm. – not accepted – kisses
|
| |
Gentiana barbellata Engelm. – not accepted
|
| |
Gentiana heterosepala Engelm. – not accepted
|
| |
Gentiana parryi Engelm. – accepted – Parry's gentian
|
| |
Gentiana prostrata var. americana Engelm. – not accepted
|
| |
Gentiana wislizeni Engelm. – not accepted
|
| |
Geranium fremontii var. parryi Engelm. – not accepted
|
| |
Gerardia spiciflora Engelm. – not accepted
|
| |
Guaiacum angustifolium Engelm. – accepted – Texas lignum-vitae
|
| |
Guajacum angustifolium Engelm. – not accepted – Texas lignum-vitae, guayacan
|
| |
Hesperaloe Engelm. – accepted – false yucca
|
| |
Heuchera sanguinea Engelm. – accepted – coralbells
|
| |
Heuchera sanguinea var. sanguinea Engelm. – not accepted – coralbells
|
| |
Isoetes bolanderi Engelm. – accepted – Bolander's quillwort
|
| |
Isoetes bolanderi var. bolanderi Engelm. – not accepted – Bolander's quillwort
|
| |
Isoetes butleri Engelm. – accepted – limestone quillwort, Butler's quillwort
|
| |
Isoetes echinospora var. robusta Engelm. – not accepted
|
| |
Isoetes engelmannii var. georgiana Engelm. – not accepted – Appalachian quillwort
|
| |
Isoetes engelmannii var. gracilis Engelm. – not accepted
|
| |
Isoetes engelmannii var. valida Engelm. – not accepted
|
| |
Isoetes flaccida var. chapmanii Engelm. – accepted – Chapman's quillwort
|
| |
Isoetes flaccida var. rigida Engelm. – not accepted – southern quillwort
|
| |
Isoetes howellii Engelm. – accepted – Howell's quillwort
|
| |
Isoetes lacustris var. paupercula Engelm. – not accepted
|
| |
Isoetes melanospora Engelm. – accepted – black-spored quillwort, blackspore quillwort
|
| |
Isoetes pygmaea Engelm. – not accepted
|
| |
Isoetes riparia var. canadensis Engelm. – not accepted
|
| |
Isoetes saccharata Engelm. – not accepted – sugar quillwort
|
| |
Jatropha macrorhiza var. septemfida Engelm. – not accepted – ragged nettlespurge, ragged jatropha
|
| |
Juncus acuminatus var. robustus Engelm. – not accepted
|
| |
Juncus acutus var. sphaerocarpus Engelm. – not accepted
|
| |
Juncus arcticus var. sitchensis Engelm. – not accepted
|
| |
Juncus articulatus var. obtusatus Engelm. – not accepted
|
| |
Juncus balticus var. littoralis Engelm. – not accepted – Baltic rush
|
| |
Juncus balticus var. montanus Engelm. – not accepted – mountain rush
|
| |
Juncus bolanderi Engelm. – accepted – Bolander's rush
|
| |
Juncus brachycarpus Engelm. – accepted – whiteroot rush
|
| |
Juncus breweri Engelm. – accepted – Brewer's rush
|
| |
Juncus chlorocephalus Engelm. – accepted – greenhead rush
|
| |
Juncus cooperi Engelm. – accepted – Cooper rush, Cooper's rush
|
| |
Juncus dubius Engelm. – accepted – dubius rush, Mariposa rush, questionable rush
|
| |
Juncus effusus var. brunneus Engelm. – not accepted – lamp rush, soft rush
|
| |
Juncus hallii Engelm. – accepted – Hall's rush, Hall rush
|
| |
Juncus kelloggii Engelm. – accepted – Kellogg's rush, Kellogg's dwarf rush
|
| |
Juncus oxymeris Engelm. – accepted – pointed rush
|
| |
Juncus parryi Engelm. – accepted – Parry rush, Parry's rush
|
| |
Juncus pelocarpus var. crassicaudex Engelm. – not accepted
|
| |
Juncus phaeocephalus Engelm. – accepted – brownhead rush
|
| |
Juncus phaeocephalus var. glomeratus Engelm. – not accepted
|
| |
Juncus phaeocephalus var. paniculatus Engelm. – accepted – brownhead rush
|
| |
Juncus phaeocephalus var. phaeocephalus Engelm. – accepted – brownhead rush
|
| |
Juncus rugulosis Engelm. – not accepted
|
| |
Juncus rugulosus Engelm. – not accepted – wrinkled rush
|
| |
Juncus supiniformis Engelm. – accepted – hairyleaf rush
|
| |
Juncus tenuis var. congestus Engelm. – not accepted
|
| |
Juncus triformis Engelm. – accepted – Yosemite dwarf rush
|
| |
Juncus vaseyi Engelm. – accepted – Vasey rush, Vasey's rush
|
| |
Juncus xiphioides var. macranthus Engelm. – not accepted
|
| |
Juncus xiphioides var. montanus Engelm. – not accepted
|
| |
Juncus xiphioides var. triandrus Engelm. – not accepted
|
| |
Juniperus californica var. utahensis Engelm. – not accepted
|
| |
Juniperus occidentalis var. conjungens Engelm. – not accepted
|
| |
Larrea glutinosa Engelm. – not accepted
|
| |
Lespedeza leptostachya Engelm. – accepted – prairie lespedeza, prairie bush-clover
|
| |
Linum aristatum Engelm. – accepted – bristle flax
|
| |
Linum greggii Engelm. – not accepted
|
| |
Linum rigidum var. puberulum Engelm. – not accepted
|
| |
Mammillaria aggregata Engelm. – not accepted
|
| |
Mammillaria applanata Engelm. – not accepted
|
| |
Mammillaria arizonica Engelm. – not accepted
|
| |
Mammillaria barbata Engelm. – accepted
|
| |
Mammillaria compacta Engelm. – not accepted
|
| |
Mammillaria dasyacantha Engelm. – not accepted
|
| |
Mammillaria deserti Engelm. – not accepted
|
| |
Mammillaria echinus Engelm. – not accepted
|
| |
Mammillaria fasciculata Engelm. – not accepted
|
| |
Mammillaria fissurata Engelm. – not accepted
|
| |
Mammillaria grahamii Engelm. – accepted – Graham's pincushion cactus, Graham's nipple cactus
|
| |
Mammillaria grahamii ssp. grahamii Engelm. – accepted
|
| |
Mammillaria grahamii var. grahamii Engelm. – not accepted – fishhook pincushion, Graham's nipple cactus
|
| |
Mammillaria gummifera Engelm. – not accepted – Biznaga lechosa
|
| |
Mammillaria hemisphaerica Engelm. – not accepted
|
| |
Mammillaria lasiacantha Engelm. – accepted – small pincushion cactus, Biznaga de espinas pubescentes, lacespine nipple cactus
|
| |
Mammillaria lasiacantha ssp. lasiacantha Engelm. – not accepted
|
| |
Mammillaria lasiacantha var. denudata Engelm. – not accepted
|
| |
Mammillaria macromeris Engelm. – not accepted
|
| |
Mammillaria meiacantha Engelm. – accepted – Biznaga de pocas espinas
|
| |
Mammillaria microcarpa Engelm. – not accepted
|
| |
Mammillaria micromeris Engelm. – not accepted
|
| |
Mammillaria micromeris var. greggii Engelm. – not accepted
|
| |
Mammillaria papyracantha Engelm. – not accepted
|
| |
Mammillaria recurvata Engelm. – not accepted
|
| |
Mammillaria similis Engelm. – not accepted
|
| |
Mammillaria similis var. robustior Engelm. – not accepted
|
| |
Mammillaria sulcata Engelm. – not accepted
|
| |
Mammillaria tetrancistra Engelm. – accepted – corkseed pincushion cactus, Biznaga de cuatro ganchos, common fishhook cactus
|
| |
Mammillaria tuberculosa Engelm. – not accepted
|
| |
Mammillaria vivipara var. borealis Engelm. – not accepted
|
| |
Mammillaria vivipara var. radiosa Engelm. – not accepted
|
| |
Mammillaria wrightii Engelm. – accepted – Wright's pincushion cactus, Biznaga de Wright, Wright's nipple cactus
|
| |
Mammillaria wrightii ssp. wrightii Engelm. – accepted
|
| |
Mammillaria wrightii var. wrightii Engelm. – not accepted – Wright's nipple cactus
|
| |
Martynia arenaria Engelm. – not accepted
|
| |
Monanthochloe Engelm. – not accepted – shoregrass, monanthochloe
|
| |
Monanthochloe littoralis Engelm. – not accepted – shoregrass
|
| |
Myosotis macrosperma Engelm. – accepted – southern forget-me-not, largeseed forget-me-not
|
| |
Nuphar polysepala Engelm. – accepted – Rocky Mountain pond-lily
|
| |
Opuntia arborescens Engelm. – not accepted
|
| |
Opuntia arbuscula Engelm. – not accepted – Cholla arbusto, Arizona pencil cholla, pencil cholla
|
| |
Opuntia arenaria Engelm. – not accepted – El Paso pricklypear, sand pricklypear, sand prickly-pear
|
| |
Opuntia bigelovii Engelm. – not accepted – Cholla velas de Coyote, teddybear cholla
|
| |
Opuntia bigelovii var. bigelovii Engelm. – not accepted – teddybear cholla
|
| |
Opuntia bulbispina Engelm. – not accepted
|
| |
Opuntia californica Engelm. – not accepted
|
| |
Opuntia clavata Engelm. – not accepted – club cholla
|
| |
Opuntia dulcis Engelm. – not accepted
|
| |
Opuntia emoryi Engelm. – not accepted
|
| |
Opuntia engelmannii var. littoralis Engelm. – not accepted
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Opuntia fulgida Engelm. – not accepted – jumping cholla, Cholla brillante
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Opuntia fulgida var. fulgida Engelm. – not accepted – jumping cholla
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Opuntia grahami Engelm. – not accepted
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Opuntia grahamii Engelm. – not accepted – Cholla de Graham, Graham's pricklypear, devil cholla
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Opuntia grandiflora Engelm. – not accepted
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Opuntia lindheimeri Engelm. – not accepted – Nopal arrastrado
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Opuntia macrocentra Engelm. – accepted – Nopal violaceo, purple pricklypear
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Opuntia macrocentra var. macrocentra Engelm. – accepted – purple pricklypear, redjoint pricklypear, longspine pricklypear
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Opuntia macrorhiza Engelm. – accepted – Nopal raizudo, twistspine pricklypear, grassland pricklypear, plains twistspine pricklypear
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Opuntia macrorhiza var. macrorhiza Engelm. – not accepted – twistspine pricklypear, bigflower pricklypear
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Opuntia microcarpa Engelm. – not accepted – smallfruit cactus
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Opuntia parryi Engelm. – not accepted – Cholla de California, brownspined pricklypear
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Opuntia parryi var. parryi Engelm. – not accepted – brownspined pricklypear
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Opuntia phaeacantha Engelm. – accepted – Nopal pardo, tulip pricklypear, brownspine pricklypear
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Opuntia phaeacantha var. major Engelm. – accepted – Mojave pricklypear, great pricklypear
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Opuntia phaeacantha var. phaeacantha Engelm. – accepted – tulip pricklypear
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Opuntia prolifera Engelm. – not accepted – Cholla prolifera, coastal cholla
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Opuntia pulchella Engelm. – not accepted – sagebrush cholla, sand club cholla, sand cholla
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Opuntia rafinesquei Engelm. – not accepted
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Opuntia ramosissima Engelm. – not accepted – Cholla diamante, branched pencil cholla, diamond cholla, pencil cholla
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Opuntia rufida Engelm. – accepted – Nopal rojizo, blind pricklypear
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Opuntia schottii Engelm. – not accepted – Cholla abrojo de Texas, dog cholla, dog cactus
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Opuntia serpentina Engelm. – not accepted – Cholla serpentina
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Opuntia sphaerocarpa var. utahensis Engelm. – not accepted
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Opuntia standlyi Engelm. – not accepted
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Opuntia stanlyi Engelm. – not accepted
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Opuntia stenopetala Engelm. – accepted
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Opuntia strigil Engelm. – accepted – marblefruit pricklypear
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Opuntia subulata Engelm. – not accepted
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Opuntia tenuispina Engelm. – not accepted
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Opuntia thurberi Engelm. – not accepted
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Opuntia vaginata Engelm. – not accepted
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Opuntia violacea Engelm. – not accepted
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Opuntia whipplei var. spinosior Engelm. – not accepted
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Passiflora affinis Engelm. – accepted – bracted passionflower
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Passiflora tenuiloba Engelm. – accepted – birdwing passionflower
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Phoradendron flavescens var. macrophyllum Engelm. – not accepted
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Phoradendron juniperinum var. libocedri Engelm. – not accepted
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Picea pungens Engelm. – accepted – silver spruce, Colorado blue spruce, blue spruce
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Pinus albicaulis Engelm. – accepted – scrub pine, white pine, whitebark pine
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Pinus aristata Engelm. – accepted – bristlecone pine, foxtail pine, hickory pine
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Pinus arizonica Engelm. – accepted – pino de Arizona, Arizona pine
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Pinus arizonica var. arizonica Engelm. – accepted – Arizona pine
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Pinus brachyptera Engelm. – not accepted
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Pinus chihuahuana Engelm. – not accepted – pino de Chihuahua
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Pinus edulis Engelm. – accepted – twoneedle pinyon, nut pine, Colorado pinyon, pinyon, two-leaf pinyon, two-needle pinyon, piñón de Colorado, piñon pine, pinyon pine
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Pinus edulis var. edulis Engelm. – not accepted – twoneedle pinyon
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Pinus elliottii Engelm. – accepted – slash pine
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Pinus elliottii var. elliottii Engelm. – accepted – Honduras pine
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Pinus flexilis var. reflexa Engelm. – not accepted
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Pinus ponderosa var. scopulorum Engelm. – accepted – interior pondersosa pine, Black Hills ponderosa pine, ponderosa pine, Rocky Mountain ponderosa pine
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Pinus strobiformis Engelm. – accepted – southwestern white pine, border limber pine, border white pine, Mexican white pine
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Plantago pusilla var. major Engelm. – not accepted
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Polygonum tenue var. microspermum Engelm. – not accepted
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Portulaca lanceolata Engelm. – not accepted
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Portulaca retusa Engelm. – not accepted
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Portulaca suffrutescens Engelm. – accepted – shrubby purslane
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Quercus agrifolia var. frutescens Engelm. – not accepted – coastal live oak
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Quercus breweri Engelm. – not accepted
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Quercus falcata var. subintegra Engelm. – not accepted
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Quercus muehlenbergii Engelm. – accepted – chinkapin oak
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Quercus muhlenbergii Engelm. – not accepted – chinkapin oak
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Quercus palmeri Engelm. – accepted – Palmer's oak
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Quercus tomentella Engelm. – accepted – island oak, island live oak
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Quercus wislizeni var. frutescens Engelm. – not accepted – interior live oak
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Quercus wislizenii var. frutescens Engelm. – not accepted
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Ranunculus lindheimeri Engelm. – not accepted
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Ranunculus pusillus var. trachyspermus Engelm. – not accepted
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Rosa minutifolia Engelm. – accepted – Baja rose, small-leaved rose
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Sagittaria calycina Engelm. – not accepted – hooded arrowhead
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Sagittaria calycina var. calycina Engelm. – not accepted – hooded arrowhead
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Sagittaria calycina var. spongiosa Engelm. – not accepted – spongy arrow-head, sagittaire à grand calice variété spongieuse, hooded arrowhead
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Sagittaria cristata Engelm. – accepted – crested arrowhead
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Sagittaria graminea var. platyphylla Engelm. – not accepted
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Sagittaria variabilis var. obtusa Engelm. – not accepted
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Sida heterocarpa Engelm. – not accepted
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Sparganium eurycarpum Engelm. – accepted – broad-fruit burr-reed, broadfruit burreed, giant burreed, broadfruit bur-reed
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Stellaria obtusa Engelm. – accepted – Rocky Mountain chickweed
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Styrax platanifolia Engelm. – not accepted – sycamoreleaf snowbell
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Talinum aurantiacum Engelm. – not accepted – orange fameflower
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Talinum aurantiacum var. angustissimum Engelm. – not accepted
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Talinum calycinum Engelm. – not accepted – rockpink, largeflower fameflower
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Tsuga caroliniana Engelm. – accepted – Carolina hemlock
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Verbena X paniculatistricta Engelm. – not accepted
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Vitis aestivalis var. canescens Engelm. – not accepted
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Vitis aestivalis var. cinerea Engelm. – not accepted
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Vitis arizonica Engelm. – accepted – canyon grape
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Vitis cordifolia var. foetida Engelm. – not accepted
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Wislizenia Engelm. – accepted
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Wislizenia refracta Engelm. – accepted – jackass clover, spectacle fruit
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Wislizenia refracta ssp. refracta Engelm. – not accepted – spectacle fruit
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Yucca angustissima var. elata Engelm. – not accepted
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Yucca angustissima var. mollis Engelm. – not accepted
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Yucca brevifolia Engelm. – accepted – Izote de desierto, Joshua tree
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Yucca brevifolia var. brevifolia Engelm. – accepted – Joshua tree, western Joshua tree
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Yucca crassifila Engelm. – not accepted
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Yucca crassifolia Engelm. – not accepted
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Yucca elata Engelm. – accepted – Izote forrajero, soaptree yucca
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Yucca elata var. elata Engelm. – accepted – soaptree yucca
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Yucca schottii Engelm. – not accepted – Izote de Schott, Schott's yucca |
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