Quassia

Quassia is a genus in the family Simaroubaceae. Its size is disputed; some botanists treat it as consisting of only one species, Quassia amara from [tropical] South America, while others treat it in a wide circumscription as a pantropical genus containing up to 40 species of trees and shrubs.

Broader treatments of the genus include the following and other species:
 * Quassia africana
 * Quassia amara
 * Quassia bidwillii
 * Quassia indica
 * Quassia undulata

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