Donald Ray Simpson

American botanist.

Abbreviations: D.R.Simpson
Occupations: botanist
Citizenships: United States
Dates: 1932-01-01T00:00:00Z
Direct attributions: 19 plants, 0 fungi
Authorship mentions: 27 plants, 0 fungi

19 plants attributed, 8 plants contributed to27 plants:

Macrolobium taylorii D.R.Simpson 1975
vulnerable plant species in the fabaceae family
Macrolobium taylorii is a species of plant in the family Fabaceae. It is found only in Peru.
Erythroxylum pacificum D.R.Simpson 1972
vulnerable plant species in the erythroxylaceae family
Erythroxylum pacificum is a species of plant in the Erythroxylaceae family. It is endemic to Peru.
Zanthoxylum albuquerquei D.R.Simpson 1982
critically endangered plant species in the rutaceae family
Zanthoxylum albuquerquei is a species of tree in the family Rutaceae. It is endemic to Peru.
Pentagonia rubriflora D.R.Simpson 1972
plant species in the rubiaceae family
Pentagonia rubriflora is a species of plant in the family Rubiaceae. It is endemic to Peru.
Paullinia tumbesensis D.R.Simpson 1976
plant species in the sapindaceae family
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Paullinia hemiptera D.R.Simpson 1976
plant species in the sapindaceae family
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Guatteria schunkevigoi D.R.Simpson 1975
plant species in the annonaceae family
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Guatteria scalarinervia D.R.Simpson 1975
plant species in the annonaceae family
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Tetrameranthus laomae D.R.Simpson 1975
plant species in the annonaceae family
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Phragmotheca leucoflora D.R.Simpson 1982
plant species in the malvaceae family
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Inga tocacheana D.R.Simpson 1975
plant species in the fabaceae family
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Guatteria cinnamomea D.R.Simpson 1975
plant species in the annonaceae family
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Duroia soejartoi D.R.Simpson 1982
plant species in the rubiaceae family
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Demosthenesia dudleyi D.R.Simpson 1972
plant species in the ericaceae family
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Sterculia stipulifera var. peruviana D.R.Simpson 1982
plant variety in the malvaceae family
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Phragmotheca flaviflora D.R.Simpson
plant species in the malvaceae family
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Paullinia elegans ssp. neglecta (Radlk.) D.R.Simpson 1976
plant subspecies in the sapindaceae family
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Paullinia clavigera var. bullata D.R.Simpson 1976
plant variety in the sapindaceae family
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Elaeagea arborea D.R.Simpson 1982
plant species in the rubiaceae family
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Osa pulchra (D.R.Simpson) Aiello 1979
endangered plant species in the rubiaceae family
Osa pulchra is a species of rare flowering plant in the monotypic genus Osa, belonging to the family Rubiaceae. There are only two known populations in Costa Rica, with less than a total of thirty individual plants and a small population in Panama. The genus name is derived from that of the Osa Peninsula in southwestern Costa Rica. The plant is a shrub or small tree and has been cultivated in several botanical gardens, including Kew Gardens, the New York Botanical Garden, and the Huntington Botanical Garden.
Mosannona pachiteae (D.R.Simpson) Chatrou 1998
vulnerable plant species in the annonaceae family
Mosannona pachiteae is a species of plant within the Annonaceae family. It is endemic to Peru.
Styrax vilcabambae (D.R.Simpson) B.Walln. 1997
plant species in the styracaceae family
Styrax vilcabambae (syn. Pamphilia vilcabambae D.R.Simpson) is a species of flowering plant found in the genus Styrax and the family Styracaceae. It is endemic to Peru.
Guatteria ramiflora (D.R.Simpson) Erkens & Maas 2008
plant species in the annonaceae family
Guatteria ramiflora is a species of plant in the Annonaceae family. It is endemic to Peru.
Sterculia peruviana (D.R.Simpson) E.L.Taylor ex Brako & Zarucchi 1993
plant species in the malvaceae family
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Gonzalagunia mildredae D.R.Simpson ex C.M.Taylor 1992
plant species in the rubiaceae family
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Gonzalagunia villosa D.R.Simpson ex C.M.Taylor 1992
plant species in the rubiaceae family
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Paullinia obovata ssp. polymorpha (D.R.Simpson) Weckerle 2003
plant subspecies in the sapindaceae family
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