Quassia amara | |
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Quassia amara from Koehler's Medicinal-Plants (1887) | |
Scientific classification | |
Kingdom: | Plantae |
(unranked): | Angiosperms |
(unranked): | Eudicots |
(unranked): | Rosids |
Order: | Sapindales |
Family: | Simaroubaceae |
Genus: | Quassia |
Species: | Q. amara |
Binomial name | |
Quassia amara L. |
Quassia amara (amargo, bitter-ash, bitter-wood) is a species in the genus Quassia, with some botanists treating it as the sole species in the genus. The genus was named by Carl Linnaeus who named it after the first botanist to describe it: the Surinamese freedman Graman Quassi. Q. amara is used as insecticide, in traditional medicine and as additive in the food industry.
It is a shrub or rarely a small tree, growing to 3 m tall (rarely 8 m). The leaves are compound and alternate, 15–25 cm long, and pinnate with 3-5 leaflets, the leaf rachis being winged. The flowers are produced in a panicle 15–25 cm long, each flower 2.5-3.5 cm long, bright red on the outside, and white inside. The fruit is a small drupe 1-1.5 cm long.
Q. amara is native to Costa Rica, Nicaragua, Panama, Brasil, Peru, Venezuela, Suriname, Colombia, Argentina, French Guiana and Guyana. Q. amara is widely planted outside its native range.
In the wood a share of 0.09 to 0.17% of quassin and 0.05 to 0.11% of neoquassin was detected in Costa Rician plants. Quassin is one of the most bitter substances found in nature.
Other identified components of bitterwood are: beta-carbolines, beta-sitostenone, beta-sitosterol, dehydroquassins, gallic acid, gentisic acid, hydroxyquassins, isoparain, isoparaines, isoquassins, malic acid, methylcanthins, methoxycanthins, methoxycantins, nigakilactone A, nor-neoquassin, parain, paraines, quassialactol, quassimarin, quassinol, quassol and simalikalactone D.