Eurycoma is a small genus of three or four species of flowering plants in the family Simaroubaceae, native to tropical southeastern Asia. They are small evergreen trees with spirally arranged pinnate leaves. The flowers are small, produced in large panicles.Selected speciesEurycoma apiculata Benn. Eurycoma harmandiana PierreEurycoma latifolia Ridl. Eurycoma longifolia Jack