Dipteryx odorata

Dipteryx odorata (commonly known as "cumaru", "kumaru", or "Brazilian teak") is a species of floweringtree in the pea family, Fabaceae. The tree is native to Northern South America and is semi-deciduous. Its seeds are known as tonka beans, but sometimes spelled tonkin beans or tonquin beans (not related to Tonkin). The seeds are black and wrinkled and have a smooth, brown interior. They have a strong fragrance similar to sweet woodruff due to their high content of coumarin.

The word tonka is taken from the Galibi (Carib) tongue spoken by natives of French Guiana; it also appears in Tupi, another language of the same region, as the name of the tree. The old genus name, Coumarouna, was formed from another Tupi name for the tree, .

Many anticoagulant prescription drugs, such as warfarin, are based on 4-hydroxycoumarin, a chemical derivative of coumarin initially isolated from spoiled sweet clover silage and producible from this bean. Coumarin itself, however, does not have anticoagulant properties.