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| Kingdom Plantae | 
|  | Aleurites fordii Hemsl. – not accepted – tung oil tree | 
|  | Aloe cameronii Hemsl. – accepted | 
|  | Aloe cameronii var. cameronii Hemsl. – accepted | 
|  | Berchtoldia junciformis Hemsl. – not accepted | 
|  | Caragana decorticans Hemsl. – accepted | 
|  | Cecropia mexicana Hemsl. – not accepted | 
|  | Cereus insularis Hemsl. – accepted | 
|  | Ceropegia trichantha Hemsl. – accepted | 
|  | Chrysopogon francavillanus Hemsl. – not accepted | 
|  | Corylopsis sinensis Hemsl. – accepted – winter hazel | 
|  | Dalbergia glomerata Hemsl. – accepted | 
|  | Dalbergia retusa Hemsl. – accepted | 
|  | Desmazeria oblitera Hemsl. – not accepted | 
|  | Dioscorea composita Hemsl. – accepted – yam | 
|  | Dioscorea spiculiflora Hemsl. – accepted – yam | 
|  | Diospyros sinensis Hemsl. – not accepted | 
|  | Eryngium sparganophyllum Hemsl. – accepted – Arizona eryngo | 
|  | Euphorbia erythraea Hemsl. – not accepted | 
|  | Euphorbia henryi Hemsl. – not accepted | 
|  | Euphorbia hippocrepica Hemsl. – not accepted | 
|  | Festuca fournieriana Hemsl. – not accepted | 
|  | Galium orizabense Hemsl. – accepted – bald bedstraw | 
|  | Hedeoma costata Hemsl. – accepted – false pennyroyal, falsepennyroyal, ribbed false pennyroyal | 
|  | Hedeoma costata var. costata Hemsl. – accepted – falsepennyroyal, ribbed false pennyroyal | 
|  | Hedeoma costatum Hemsl. – not accepted | 
|  | Hedeoma costatum var. costatum Hemsl. – not accepted | 
|  | Hedeoma tenella Hemsl. – not accepted | 
|  | Jasminum primulinum Hemsl. – not accepted | 
|  | Lagascea decipiens Hemsl. – accepted – doll's head, lagascea | 
|  | Lonicera henryi Hemsl. – not accepted | 
|  | Mirasolia diversifolia Hemsl. – not accepted | 
|  | Nepenthes macfarlanei Hemsl. – accepted | 
|  | Nepenthes smilesii Hemsl. – accepted | 
|  | Oryzopsis fournieriana Hemsl. – not accepted | 
|  | Pandanus cominsii Hemsl. – not accepted – pandanus | 
|  | Panicum ascendens Hemsl. – not accepted | 
|  | Pantathera avenacea Hemsl. – not accepted | 
|  | Pennisetum bambusiforme Hemsl. – not accepted | 
|  | Pennisetum humboldtianum Hemsl. – not accepted | 
|  | Pennisetum mexicanum Hemsl. – not accepted | 
|  | Philadelphus madrensis Hemsl. – not accepted – desert mountain mockorange, desert mountain mock orange | 
|  | Pittosporum resiniferum Hemsl. – accepted – resin cheesewood | 
|  | Ranunculus stolonifer Hemsl. – not accepted | 
|  | Rhabdothamnopsis Hemsl. – accepted | 
|  | Rodgersia sambucifolia Hemsl. – accepted | 
|  | Rosa hugonis Hemsl. – not accepted – rose | 
|  | Rosa prattii Hemsl. – accepted | 
|  | Rosa sinowilsonii Hemsl. – accepted | 
|  | Rosa willmottiae Hemsl. – accepted – Willmott's rose | 
|  | Rubus cockburnianus Hemsl. – accepted | 
|  | Ruellia dipteracanthus Hemsl. – accepted | 
|  | Sedum parvum Hemsl. – not accepted – dwarf stonecrop | 
|  | Sedum parvum var. parvum Hemsl. – not accepted | 
|  | Solanum pittosporifolium Hemsl. – accepted | 
|  | Stemonurus megacarpus Hemsl. – not accepted | 
|  | Trisetum insulare Hemsl. – not accepted | 
|  | Viburnum carlesii Hemsl. – accepted | 
|  | Viburnum rhtidophyllum Hemsl. – not accepted | 
|  | Viburnum rhytidophyllum Hemsl. – accepted – leatherleaf arrowwood | 
|  | Zephyranthes longifolia Hemsl. – accepted – copper zephyrlily, copper zephyr-lily | 
|  | Zeugites galeottianus Hemsl. – not accepted | 
|  | Zeugites munroanus Hemsl. – accepted | 
        
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