HABIT	A SUBERECT ANNUAL HERB.
STEMS	SCRAMBLING OR TRAILING, GLABROUS .
LEAVES	LEAFLETS MODIFIED INTO LONG TENDRILS; STIPULES OVATE-ROUNDED, 0.5-3 X 1-2 CM, APPRESSED TO STEM.
FLOWERS	YELLOW, AXILLARY, SOLITARY, ON LONG PEDUNCLES.
FRUITS	PODS ARE GLABROUS, STRAIGHT OR INCURVED, 2-3.5 CM LONG AND 0.3-0.8 CM WIDE, WITH 6-8 SEEDS.
SEEDS	ELLIPSOID TO GLOBOSE, USUALLY FLATTISH WITH A GLOSSY, SMOOTH, DARK PURPLE-BROWN TO BLACK SURFACE, SOMETIMES SPOTTED TO MARBLED.