Large forest climber to at least 20 m. Tubers one per growing season, often present alongside withering tuber of previous season, 10–55 by 3–6 cm, clavate to cylindricclavate, vertically oriented, towards narrower base fibrous and pink or yellow, white and softer towards broader apex according to Prain & Burkill (1938), subtended by a small, ovoid to irregular woody crown. Indumentum absent. Stems 3–5 mm in diam., twining to the right, annual, toward base woody and spiny, unarmed on upper stem, terete. Leaves simple, alternate, blades ovate to orbicular, 5–7-veined, chartaceous, margins entire, base cordate, apex acuminate; petioles 7–17 cm long; cataphylls, bulbils and lateral nodal organs absent. Inflorescences spicate, pendent, tepals inserted on a discoid torus, free, ventrally concave, thickened along dorsal midrib, fleshy in texture with inner whorl tepals thicker than outer; male inflorescences simple or compound, compound inflorescences 1–2 per axil, simple/partial inflorescences 1–3 per axil, peduncles 1.8–3.1 mm long, axes 1.3–4.8 cm long; female inflorescences simple, 1–2 per axil. Male flowers with outer tepals 1.2–1.5 by 1–1.2 mm, ovate to obovate, inner tepals 0.8–1.2 by 0.8–1 mm, obovate, apex acute; stamens 6. Capsules 21–27 by 29–41 mm. Seeds 5–5.5 by 4.5–5 mm, lenticular-ovoid, wings 16–19 by 14–16 mm, extending all around seed margin.