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Leaf-lamina 1·3–7·0 x 1·0–7·8 cm., membraneous, ovate or broadly ovate in outline, cordate, dark green and rather coarsely scabrid-punctate above, smooth and glabrous or glabrous except for a few setulae on veins beneath, obscurely and remotely to rather prominently sinuate-denticulate at the margins, rather shallowly to moderately deeply palmately 3–5-lobed, the central largest, broadly triangular to ovate, more or less acuminate, acute to obtuse or rounded, apiculate, the lateral shorter.
Scandent herb, monoecious (male and female flowers on the same plant). Male flowers 51-381 mm subumbelliform pedunculate axillary clusters, rarely solitary. Female flowers solitary, co-axillary with male flowers. Stamens on long, hairy filaments. Fruit globose, red, 5-7 mm in diameter. Seeds 4.2-4.1 mm long. Flowers white, becoming yellow-green with age.
Male flowers 2–15 in shortly racemiform or subumbelliform pedunculate axillary clusters, rarely solitary; peduncle 0·2–2 cm. long; pedicels 1–3 mm. long. Receptacle-tube 0·5–1·3 cm. long, lobes triangular, dentiform, 0·2–0·4 mm. long. Petals white, becoming yellow-green with age, 0·8–1·5 mm. long.
Female flowers solitary, co-axillary with male; pedicels 1·5–8 mm. long; ovary 1·5–2·5 mm. long; perianth as in male flower.
Seeds ovate in outline, smooth, compressed, 4·2–4·7 × 2·7–3.5× 0·4–0·7 mm.
Fruits globose, glabrous, red, 5–7 mm. in diameter; pedicels 2–7 mm. long.
Stem scandent to 3 m., glabrous or sparsely setulose at the nodes.
Petioles glabrous or sparsely spiculate, 0·7–6 cm. long.
Flowers monoecious.
