HABIT	PROSTRATE OR TWINING PERENNIAL, HERB OR CLIMBER.
STEMS	0.15-3 M HIGH; SMOOTH OR VELVETY.
LEAVES	TRIFOLITAE, WITH 3 RHOMBIC, OVATE, OR NEARLY CIRCULAR LEAFLETS. THE LATERAL LEAFLETS ARE OBLIQUE. LEAFLETS ARE 1-6 CM LONG, 0.8-5 CM WIDE.
FLOWERS	FLOWERS ARE BORNE IN LOOSE RACEMES, 2-15 CM LONG, IN LEAF AXILS. FLOWERS ARE BROWNISH OUTSIDE, AND YELLOW INSIDE. THE STANDARD PETAL IS OFTEN TINGED REDDISH
FRUITS	PODS ARE OBLONG-CURVED, FLATTENED, SHORTLY BEAKED AND SLIGHTLY CONSTRICTED BETWEEN THE WIDELY SPACED SEEDS, 0.6-3.5 CM LONG, 0.3-0.5 CM WIDE,BLACK WHEN RIPE .
SEEDS	MONOCOLOURED, BLACK OR BROWN, 3 MM LONG, WITH A SHORT HILUS.