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Female flowers: pedicels 0.5–1 mm long; calyx lobes 6, 2 mm long, accrescent to 5 mm long in fruit, spathulate, with 3 small linear subglabrous green lobules on each side, a terminal ovate foliaceous laminula, and a strap-shaped rhachis pubescent and greenish without, glabrous and stramineous within, becoming slightly hardened; ovary 2 mm in diameter, 3-lobed, uniformly densely pubescent, setose on the keels; styles 3, 2 mm long, connate to halfway, ± glabrous, stigmas shallowly rugulose, tightly coiled.
Leaf blade 4–14 × 1–5 cm, elliptic-oblong to elliptic-oblanceolate, shortly acutely acuminate at the apex, subentire to shallowly and remotely denticulate on the margins, subtruncate to cordate at the base, membranaceous, 5–9-nerved from the base, sparingly pubescent and setose on the upper surface, and sparingly hirsute and setose along the midrib and main nerves beneath; lateral nerves in 4–6 pairs, slightly prominent.
Inflorescences 2–3 cm long, with the peduncle 1.5–2.5 cm long, leaf-opposed, bisexual, densely flowered; male bracts 2 mm long, oblong, subglabrous; male bracteoles 1 mm long, subulate; female bracts 3 mm long, ovate; female bracteoles resembling the male bracts.
Male flowers: pedicels 0.5–1 mm long; buds obovoid-turbinate; calyx lobes 1 × 1 mm, broadly ovate-suborbicular, apiculate, subglabrous; stamens 0.5 mm long; pistillode trigonous, depressed-conic.
Seeds c. 3 mm in diameter, globose, silvery-grey, streaked with beige and mottled chestnut-brown.
A weakly urticating climbing subshrub with sparingly puberulous stems, monoecious.
Fruit 3–4 × 7–8 mm, 3-lobed, evenly pubescent, sparingly setose on the keels.
Stipules 3–4 × 1–1.5 mm, ovate-lanceolate, acute, subglabrous, ciliate.
Flowers greenish, the female calyx-lobes with white stinging hairs.
Petioles 1–7.5 cm long, sparingly puberulous and stinging-setose.
Stems twining
