A slender, much branched, tough laticiferous climber with long fleshy, knotty roots.Leaves simple, opposite, somewhat fleshy, ovate to orbicular, cordate, often apiculate,glabrous, acute to acuminate, pubescent beneath. Flowers in umbels, greenish yellowoutside, purplish within. Fruits fusiform, divaricate, glabrous, tapering to a fine pointat the apex. Seeds ovate with long coma. (India) Semi-shrubby. twining perennial with very long, hairy stems and many. long, fleshyroots; leaves simple. opposite without stipules. 2.5-7cm long, L5-5cm broad, oblong-oval or rotundate, cordate at base. apiculate, scantily hairy above, densely pubescentbeneath, petioles 0.5 Icm long and hairy; flowers regular, bisexual. long-pedicelled inunibels or branched umbels at the ends of hairy peduncles arising from the axils ofone of the two leaves at each node; peduncle 1-1.3cm long, slender, green turningreddish, pedicels 1.7-2.1cm long, reddish and hairy; bracts I -2.2mm long, 0.3-0.5mmbroad, linear or subulate and hairy; sepals 5, distinct, 2.5mm long, 0.5mm broad.lanceolate and hairy outside; petals 5, fused into a rotate corolla, l-l.2cm diameter,lobes 4mm long, 3mm broad, ovate, obtuse or subacute at apex, purple or greenishpurple and hairy on the upper surface column prominent stamens 5 connate. filamentsshort, anthers small with a short, infiexed tip. pollen masses minute, one in each cell,coronal processes adnate to the back of the stamens; ovary superior of 2 distinctcarpels. Imm tall, stigma 5-angled, not exserted fruit-follicles, 5 -8.5cm long, divaricate, slender, fusiform, glabrous: seeds broadly oval, 0.5cm long with coma 1.8cm in length.Flowers from September to February. (Sri Lanka)