Climber to 5 m. Tubers 1 per growing season, with withering tuber of previous season, 10–15 by 1.6–3 cm, cylindric to clavate, deeply vertically buried. Indumentum present at least on older stems as fine tuberculae giving a rough texture. Stems 0.5–4 mm in diam., twining to the right, annual, unarmed, terete. Leaves simple, opposite, blades coriaceous, elliptic-ovate to broadly ovate, 3-veined, margins entire, base narrowly cuneate to truncate, apex acute to acuminate; petioles 0.4–2 cm long; cataphylls 2.4–3.5(–10) by 1.5–3.2 mm, ovate to broadly ovate, apex acute; lateral nodal organs and bulbils absent. Inflorescences pendent, axes terete and shallowly angled, partial inflorescences flexuous, spicate, tepals free, fleshy in texture, on a discoid torus; male inflorescences compound, 1(– 2) per axil, partial inflorescences 1–3(– 4) per axil; female inflorescences simple or compound, compound inflorescences 1 per axil; simple/partial inflorescences 1–4(–6) per axil; peduncles 8–15 mm long, axes 4–15 cm long. Male flowers with outer tepals 0.8–1.3 by 0.7–1.1 mm, broadly ovate, inner tepals 0.7–1.2 by 0.4–0.6 mm, narrowly obovate to obovate, stamens 6. Capsules 12–16 by 21–30 mm. Seeds 2.5–3.3 by 2.5–3 mm, flattened-ovoid to lenticular, wings 10–15 by 8.5–14 mm, extending all around seed margin.