Botanical description
Annual erect plant, up to 2 m in height. Leaf with three membranous leaflets, oval to ovate, 6 to 12 cm in length. Flowers, 10 to 20 in number, pink, in peduncles. Pod (fruit) linear, slightly curved, up to 30 cm in length, with three longitudinal ribs in each valve. Ellipsoid seeds, approx. 2 cm in length, white with a brown mark.
Plant a climber or a bushy shrub, up to 2 m high. Leaf compound with three leaflets, oval to ovate, 6 to 12 cm long. Inflorescence a raceme, flowers pink-purple; pod (fruit) linear, slightly curved, ca. 30 cm x 2.5-3.5cm, with three longitudinal ribs in each valve; seeds ca. 2 cm x 1.5 cm x 1 mm, white or ivory with a brown mark.