Shrub, nearly 2 m in height, branches sometimes slightly prickly. Leaves bipinnate, 10-45 cm long, pinnae 4-12 pairs, opposite, c. 7.5 cm long. Leaflets 1.2-1.3 cm long, 3-7 mm broad. Flowers in erect terminal raceme, variously orange yellow and red coloured, often claw red, centre of limb crimson, red or golden red. Filaments very long, bright red. Pod 5-7.5 cm long c. 1.7 cm broad, straight.