Quassia is a flora 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. The genus was named after a former slave from Surinam, Graman Quassi in the eighteenth century. He discovered the medicinal properties of the bark of Quassia amara.

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Keywords: art, arts, botanical, botany, commerce, flora, flower, graman, historical, history, images, medicinal, medicine, painting, paintings, pictures, plant, quassi, quassia, surinam, suriname, trade