Herbaceous climber, possibly one or a few metres long, annual?, sparsely soft-woolly grey glandular-hairy; monoecious. Leaves: petiole 1-1.5 cm long; blade membranous, blackish on drying, simple, unlobed or shallowly (faintly) 3-5-lobed, ± ovate in outline, 4-7.5 by 3.5-7 cm, upper and lower surface sparsely villous, glands absent, margin entire, apex rather long acute-acuminate, minutely mucronate. Inflorescences glandular hairy, to 10 cm long (including 2-6 cm long peduncle), with few (uni)lateral 10-20-flowered male racemes, and with 1 (or 2 or 3) solitary female flowers (fruit) at the nodes of the lower branch(es), occasionally co-axillary with the panicle an additional male raceme; bracts lanceolate, c. 1 mm long, ± caducous. Male flowers: pedicel 1.5-2 mm long, sparsely hairy; perianth ± bowl-shaped; receptacle shallowly bowl-shaped, 0.7(-1) mm wide; sepals ± long-triangular, c. 1 mm long, sparsely hairy; petals (ovate-)elliptic, c. 1.5 mm long, glabrous, at apex with minute papillose mucro; filaments united into c. 0.5 mm long column; anthers broadly ellipsoid, c. 0.3 mm long, abaxially with minute dark dot. Female flowers not known (ovary hairy). Fruit 1(-3) per infructescence (in old otherwise male-flowered inflorescence); (2.5-)3-3.5 by 1-1.3 cm, sparsely whitish villous, hairs glandular, 3-4 mm long, base (narrowly) rounded, apex truncate, with 2-3 mm long stylar processes; fruiting pedicel 0.4-0.8 cm long. Seeds 15-20, obovate, narrowed at base, 6-7 by (4-)5 mm including double 6-8-toothed margin (edge), faces ribbed towards margin, nearly smooth in the centre, wing c. 8 by 4 mm.
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