Liane to 12 m.; lateral roots often tuberous; younger stems rather slender with internodes variously 4-, 5-, 6-or indistinctly angled, glabrous, green, leafy; internodes 2–8 cm. long, 4–10 mm. wide; in age stems mostly becoming 4–5-angled 3.5–4 cm. wide with prominent corky wings to 1.5 cm. broad on angles, no transverse band of fibres present beneath angles in stem-section; tendrils simple, 6–13 cm. long.. Leaves slightly to markedly fleshy, usually snapping easily when folded, glabrous, 2–5–10 cm. long, 4–11 cm. wide, rhombic, ovate or circular, sometimes shallowly 3-lobed, sometimes folded adaxially along midrib, apex shortly acuminate or rounded, base subcordate or rounded, margin with regular short teeth, young leaf mostly crimson-purple, becoming green when mature; petioles thick, 1–2.7 cm. long.. Inflorescence lateral, 15–25 cm. long, branching, the branches 5–7 cm. long and bearing flowers in umbellate clusters, axes with ferruginous tomentum; pedicels 10–12 mm. long.. Flower buds ovoid, glabrous.. Calyx ± 1 mm. long, glabrous.. Petals to 5 mm. long, sometimes constricted in upper third.. Fruits ovoid, 4–8 cm. long, 4–6 cm. wide with slight swellings.
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