Geissospermum
Geissospermum is a genus of flowering plants in the family Apocynaceae, first described as a genus in 1846. It is native to South America.
;SpeciesGeissospermum argenteum Woodson - Venezuela, the GuianasGeissospermum fuscum Markgr - S Venezuela, NW BrazilGeissospermum laeve Miers - N + E Brazil, the GuianasGeissospermum reticulatum A.H.Gentry - S Venezuela, Peru, N BoliviaGeissospermum sericeum Miers - Guyana, Suriname, French GuianaGeissospermum urceolatum A.H.Gentry - NW Brazil