HABIT	AN EXTENSIVE PERENNIAL VINE.
STEMS	USUALLY ANGLED OR NARROWLY 3-5-WINGED; FLESHY WITH MILKY JUICE.
LEAVES	VARIABLE IN SHAPE, ORBICULAR, BROADLY OVATE, OVATE-LANCEOLATE OR LANCEOLATE, 5-15 CM LONG, BASE CORDATE TO HASTATE, APEX ACUMINATE, ACUTE OR MORE COMMONLY COARSELY DENTATE TO SHALLOWLY LOBED, UPPER SURFACES GLABROUS OR APPRESSED-PILOSE, LOWER SURFACES PUBESCENT.
FLOWERS	INFLORESCENCE AXILLARY, CYMOSELY ONE OR FEW FLOWERED. FLOWERS WITH PEDUNCLES, 0.2-1.8 CM LONG, GLABROUS OR PUBESCENT; WHITE OR WHITE WITH A YELLOWISH BASE, CAMPANULATE TO BROADLY FUNNEL-SHAPED.
FRUITS	CAPSULAR, DEPRESSED-GLOBOSE, 1.5 CM LONG, ENCLOSED IN THE ENLARGED, PAPERY SEPALS.
SEEDS	DULL BLACK, GLABROUS, 6 MM LONG.