A tree. It grows 20 m tall. The leaves are in clusters of 3-6 in nodes towards the end of the branches. They are narrowly oval and 10-20 cm long by 3-7 cm wide. The flowers are in the axils of leaves or towards the ends of branches. The fruit have 10-14 follicles 1-3 cm long by 0.5-1.5 cm wide. The seeds are 6-10 mm long by 5-7 mm wide.