This small tree or bush is evergreen and a member of the legume family with bipinately compound leaves that close up at night or during times of drought. In spring and late summer raspberry like buds growing in the leaf axils open into powderpuff-like flowers made up of a multitude of long colorful showy stamens. Leathery seed pods follow the flowers, bursting open when ripe and then curling up. The dwarf variety ‘nana’ is especially suitable for bonsai because of its slow growth and more frequent blooming.