HABIT	A HERBACEOUS PERENNIAL GROWING FROM A VERY DEEP ROOT SYSTEM. SHOOTS DEVELOP FROM ADVENTITIOUS BUDS ON THE DEEP ROOT SYSTEM AT ALMOST ANY DEPTH DOWN TO 1 M.
STEMS	SLENDER, TO 1.5 M LONG, TWINING ANTICLOCKWISE, GLABROUS OR FINELY PUBESCENT
LEAVES	ALTERNATE, PETIOLATE, VARIABLE IN SHAPE, LANCEOLATE OR OVATE TO NARROW-OBLONG, 1.2-5.0 CM LONG, ACUTE AT THE APEX, ENTIRE BUT OFTEN HASTATE-SAGITTATE AT THE BASE, GLABROUS OR PUBESCENT WITH SCATTERED CRISPED HAIRS.
FLOWERS	WHITE OR PINK, AXILLARY, SOLITARY, PEDUNCLES, 2.5-5 CM LONG, SLENDER WITH A PAIR OF SMALL LINEAR BRACTS AT THE APEX FROM WHICH THE PEDICELS ARISE; PEDICELS 3-25 MM LONG.
FRUITS	CAPSULES 6-8 MM IN DIAMETER, GLOBOSE, GLABROUS.
SEEDS	SUBTRIGONOUS, DARK REDDISH-BROWN, GLABROUS OR PUBERULOUS.