Deciduous tree 30–40 m tall; trunk buttressed, grey, smooth; flowering branchlets ± 5 mm diameter, glabrous, lacking conspicuous lenticels. Leaf-blade broadly ovate in outline, shallowly (3–)5-lobed, 12–30 cm long, 10–23 cm wide (smaller leaves from flowering branchlets), apex shortly acuminate, base cordate to deeply cordate, digitately 5-nerved, glabrous above, and below when mature (expanding leaves and stems densely and entirely covered with 10–12-armed golden brown stellate hairs, these persisting only on the apex of the petiole), domatial pockets webbed, stellately hairy, conspicuous; petiole (6–)12–17 cm long, (0.1–)0.2–3 mm diameter Inflorescences 2–5 per branchlet, golden brown stellately tomentose as the young leaves, borne singly in the uppermost axils, each (2.7–)5–6 cm long, 2 mm diameter, bearing 3–5 partial peduncles; bracts orbicular, concave, 9 mm long, partial peduncle 8–12 mm long, bearing 2–3 bracteoles similar to the bracts and at the apex ± 3 flowers, pedicel ± 4 mm long. Male flower with outer indumentum as inflorescence, divided for 5/6, lobes oblong, 10–11 mm long, 4 mm wide, basal part saucer-shaped, 2 mm long, 5 mm wide, inner surface densely papillate, upper half of lobes densely stellate; androgynophore 5 mm long, glabrous, base dilated, surrounded by stellate hairs, apex with subcylindrical head of anthers 2.5 mm long, 2.5 mm wide. Female flowers as the male, androgynophore <1 mm, carpels, stamens forming a cylinder ± 4 mm diameter; carpels ovoid, ± 6 mm long, 3–4 mm wide, villose, styles slender, ± 4 mm long, revolute. Fruit with carpels ellipsoid, 9–11 cm long, 8–12 cm wide, carpel wall 9–17 mm thick, outer surface indumentum as inflorescence; seeds with wing obovate to oblong, 8.5–10 cm long, 2.8–3.5 cm wide.
