Climber, sometimes creeping and rooting at the nodes, 15 m long, at first with minute hairs, glabrescent, leafy stem 3-5 mm diam.; dioecious or monoecious. Probract absent. Tendrils 2-branched. Leaves: petiole (3-)4.5-8 cm long; blade green on drying, membranous, or chartaceous, simple, unlobed, in outline (narrowly) ovate, (5.5-)10-26 by 9-19.5 cm, scabrous above, glands several, scattered, 0.5-1 mm diam., base with 2 concave auricles c. 5 mm diam. laterally at apex of petiole, each with 2-7 glands, margin entire or shallowly sinuate towards the base, with few small teeth c. 0.5 mm long, apex sometimes rounded. Male raceme shortly brown hairy, partly glabrescent; peduncle 1-5 cm long, 2-3 mm thick; rachis not thickened, 10-14 cm long, 15-35-flowered; bracts subpersistent, to halfway shifted upwards on the pedicel, lanceolate, 10-20 mm long, entire, glands few, small. Male flowers: pedicel 10-20 mm long, persistent or caducous; receptacle-tube 5-ribbed, lower part tapered to the base, 18-27 mm long, at throat c. 5 mm wide; sepals linear, 4-7 mm long, c. 1 mm wide at base, entire; petals in bud forming an 8-12 mm long elongate body, petals at anthesis obovate, 15-22 mm long, threads 7-10 mm long; synandrium 6-7 mm long, anthers fused in the upper part only, filaments glabrous, free, slender, 1-1.5 mm long, inserted at c. 1/3 of the tube below the throat, each continuing into a rib ending in a low 3-lobed ring in the basal part of the tube; disc absent. Female flowers: in a raceme (always?); pedicel c. 20 mm long; ovary ellipsoid, c. 8 mm long; perianth incompletely known. Fruit 1-4 per infructescence, ripening green with paler or yellowish streaks, broad-ellipsoid, c. 10 by 7 cm, apex c. 6 mm beaked; dry pericarp leathery, c. 6 mm thick, smooth; pulp white, finely fibrous; fruiting pedicel c. 2.5 cm long, 7 mm thick. Seeds brown, compressed, subcircular, 8-10 by c. 1 mm, margin broad, radiately ribbed, entire.
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