Liane; mature branches with flaking bark; young branchlets densely pubescent. Leaf-lamina 7–20 cm. long and wide, clearly cordate at base, acuminate or subobtuse at apex, membranous to subpapyraceous, silky-tomentellous when young, later pubescent, basal nerves 5–7, palmate, petiole 7–14 cm. long. Male inflorescences 10–30 cm. long, 1.5–2 cm. wide; pedicels 3–6 mm. long; bracts linear-filiform, pubescent or subtomentellous. Male flowers with lanceolate outer sepals 1.5–2 x 0.5–1 mm.; inner sepals 2.5–3.5 x 1.5–2 mm., obovate with a tuft of hairs at the apex and sometimes also down the median line outside; petals subequal, 2–2.5 x 1.5–2 mm., obovate, glabrous; stamens 2.5–3 mm. long. Female inflorescences 10–18 cm. long. Female flowers with staminodes about 1 mm. long; carpels 1.8–2 mm. long, ± united at the apex by the stigma. Drupelets up to 2 x 1.2 cm. Seeds 1–1.8 cm. long.