Dipteryx odorata
Dipteryx odorata (commonly known as "cumaru", "kumaru", or "Brazilian teak") is a species of flowering tree in the pea family, Fabaceae. The tree is native to Northern South America and is semi-deciduous. Its seeds are known as tonka beans (sometimes tonkin beans or tonquin beans). They 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 tree, kumarú. Many anticoagulant prescription drugs, such as warfarin, are based on 4-hydroxycoumarin, a chemical derivative of coumarin initially isolated from this bean. Coumarin, however, does not have anticoagulant properties. Biology of the tree The tree grows up to , with a trunk of up to in diameter. The tree bark is smooth and gray, whereas the wood is red. The tree has alternate pinnate leaves with three to six leaflets, leathery, glossy and dark green, and pink flowers. Each developed fruit contains