A small to relatively large tree usually growing 8-12 m tall. Its bark is relatively smooth and grey or greyish-brown in colour. Its alternately arranged leaves (5-25 cm long) are once-compound with 5-7 large shiny green leaflets. Its pink, light purple or whitish pea-shaped flowers (10-18 mm long) are arranged in elongated clusters. Its oval or slightly elongated pods (3-8 cm long) turn brown as they mature.