Species:Geissospermum

A small genus native to northern South America from Guyana to Brazil. G. laeve (Vell.) Miers, G. sericeum (Sagot) Benth. & Hook.f., and G. vellosii Allemao are recognized locally as having antimalarial properties. These are usually taken as bark decoctions prepared in water (Brazil, Guyana, Surinam) or alcohol (French Guiana).

Indole alkaloids geissospermine (C19H24N2O2+H2O), pereirine (C19H24N2O) and vellosine (C23H28N2O4), and one β-carboline alkaloid are contained.

Ref. Jonathan CP et al. "Indole and β-Carboline Alkaloids from Geissospermum sericeum" J Nat Prod 2002,65(1):85?88 DOI

Scientific Classification (based on APG-II and Taxonomicon)
division Jpn. 門	Tracheophyta 維管束植物門
class Jpn. 綱	Magnoliopsida モクレン綱
subclass Jpn. 亜綱	Asteridae キク亜綱
order Jpn. 目	Gentianales リンドウ目
suborder Jpn. 亜目	[[:Category:\|]]
infraorder Jpn. 下目	[[:Category:\|]]
parvorder Jpn. 小目	[[:Category:\|]]
superfamily Jpn. 上科	[[:Category:\|]]
family Jpn. 科	Apocynaceae キョウチクトウ科
subfamily Jpn. 亜科	[[:Category:\|]]
tribe Jpn. 族	[[:Category:\|]]
subtribe Jpn. 亜族	[[:Category:\|]]
genus Jpn. 属	Geissospermum