Dolichos decumbens Thunb.

Decumbent shrublet. Stems sprawling, 0.3-0.6 m high, not striate-ribbed. Leaflets rhombic-ovate, 10-26 x 10-25 mm, mucrons absent, sparsely pubescent beneath, glabrescent above; petiole (5-)10-18(-30) mm long; stipules ovate, 2-3 x 1-2 mm. Flowers in axillary pseudo-umbels, peduncles longer than petioles, not warty, (18-)25-65 mm long, with (2)4 to 10 flowers; flowers 6-7 mm long; bracts ovate, 1.0-1.5 x ±1 mm; bracteoles linear-lanceolate, ±1 x ±0.5 mm. Calyx sparsely hairy, upper lip slightly longer than lower lip, upper lip 2.0-3.5 mm long, lower lip 2-3 mm long; carinal lobe length equal to lateral ones. Corolla violet, pink or blue with dark purple keel tip; standard suborbicular, 5-7 x 5-7 mm, claw 1.5-2.0 mm long; wings obovate, 4-5 x ±2 mm, claw 3-4 mm long; keel more or less equal to wings, 4-5 x 2-3 mm, claw 3-4 mm long. Ovary narrowly oblong, 4-5 mm long, 1 or 2-ovuled. Fruit linear, 25-30 x 4-5 mm, densely silky, without warts along the margins, 1 to 2-seeded. Seeds brown or brown mottled black.