Griffonia

Griffonia is a genus of central African flowering plants in the legume family, Fabaceae. It belongs to the subfamily Cercidoideae. Griffonia is known to have a high concentration of 5-HTP in its seeds. The genus includes four species of scandent shrubs and lianas native to west and west-central tropical Africa, ranging from Liberia to DR Congo and Angola. They grow in humid tropical forests, swamp forests, and thickets in coastal wooded grassland. G. physocarpa, G. speciosa, and G. tessmannii are native to west-central Africa, with G. physocarpa having the widest distribution. G. simplicifolia ranges from Gabon to Liberia....read more on Wikipedia.