The greyish-brown trunk is finely grooved vertically and rough. The leaves are finely compound, with 8-20 pairs of leaflets that are 12-30 mm long and 3-10 mm broad, arranged in opposites, each oblong in shape with a rounded base and apex. Flowers are about 2 cm, pale yellow, borne in clusters up to 8. The fruit is a grey-brown fleshy pod up to 20 cm long and 1-1.5 cm thick, consisting of dark brown pulp at maturity and 2-4 round, compressed, shiny brown seeds.