Climber, glabrous, leafy stem 2-3 mm diam.; dioecious. Probract ovate, somewhat concave, c. 5 mm long, entire, with few glands. Tendrils 2-branched. Leaves: petiole 2.5-5 cm long; blade green on drying, membranous, simple, unlobed, in outline broadly ovate, 9-20 by 8-16 cm, glands 4-8, large, 2-5 mm diam., situated towards the insertion of the petiole, cystoliths on stem, petioles and veins beneath, margin conspicuously coarsely serrate-dentate, teeth 5-12 mm long, apex with slender acumen to 5 mm long; veins 5, arching. Male raceme and female flowers not known. Fruit ovoid? (precise shape and size not known); exocarp ± leathery, smooth; pericarp rather thin, pulp possibly green-black; fruiting pedicel c. 2 cm long, c. 4 mm thick. Seeds light brown, compressed, narrowly elliptic, 13-16 by 6-7 by 1.5 mm, base cuneate, apex rounded, margin faint, edge entire or indistinctly crenulate.
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