A large woody climber, often with flattened and spiral stem. Rachis 2 cm long, pinnae 1—2 pairs, 6.5—9 cm long, 1—2(—3) pairs of leaflets per pinna, leaflets elliptical to obovate-elliptical, unequal-sided, 4.5—10 cm x 1.8—6.3 cm, base asymmetrical or somewhat emarginate. Inflorescence an axillary spike, 13—30 cm long, flowers sessile or subsessile, male or bisexual, minute, calyx green, broadly cup-shaped, petals green with a reddish base. Pod straight to slightly curved, up to 100(—200) cm x 7—15 cm, exocarp woody, endocarp parchment-like. Seed suborbicular, flattened, 4—6 cm x 3.3—5 cm, 1 cm thick, brown.

PROSEA (Plant Resources of South-East Asia) Foundation

Used to relieve rheumatic joint and muscle pains, and for respiratory ailments (juice of the stem); for the treatment of hernia, fish poisoning and gonorrhoea (decoction of the stem); given for ulcers, abdominal muscle spasms and headaches (juice of the roots).