Perennial. semi-woody, scandent, tendril climber with grey, glabrous stems; tendrilssimple, elongate, terete, glabrous; leaves simple, alternate, coriaceous, 7,5-15cm long,5-9.5cm broad, deciduous leaving prominent circular scars, broadly oval to lanceolate,rounded or cordate at base. somewhat acuminate, apiculate, quite entire, glabrous, rather thick, venation reticulate rather conspicuous beneath: petioles 2.7-3cm long; flowers regular, unisexual, dioecious, greenish yellow, rather small on short pedicels, male flowers in racemes or panicles 15-30cm long. branched chiefly at base with flowers in small clusters, pedicels articulated about the middle, 2-4mm long, bracteolate at base; sepals 3. valvate, fused into a calyx, segments rotundate, concave, glabrous; petals 5, connate below lo form a rotate corolla, imbricate, segments ovate, acuminate, obtuse with incurved apices; stamens 5, inserted on central disc distinct, filaments short, broad, spreading, anther 1-cclled, opening transversely; female flowers in 5-12-nowered racemes 10-30cm long; sepals broadly triangular, 4mm long; petals ovate-oblong, 6-8mm long; ovary inferior, narrowly turbinate, cylindrical, 1.2cm long. glabrous, styles rather long spreading, bifid; fruit capsule 2.5-3.7cm long, cylindrical, rounded at base, truncate at apex opening on summit by 3 valves.glabrous.pale yellowish brown: seeds few, compressed with wing as long as the fruit, very flat, glabrous, yellow, wing rounded at the ends. Flowers during June (Sri Lanka)