Sparsely branched treelet 2–3(–8) m; bole to 2 cm diam. Leafy twigs c. 7–12 mm diam.; lenticellate, tomentose; apical buds with fist-shaped young leaves, densely tawny tomentose. Leaves 50–75 cm, 5-or 6-jugate with apical scar; petiole 15–20 cm, flattened to grooved adaxially in sicco, hollowed adaxially and swollen at base, lenticellate, finely pubescent. Leaflets subopposite to alternate, the subapical the largest, 25–38 by 10–12 cm, lanceolate to oblong, the most proximal 10–13 by 4–5 cm, ± ovate, glabrous adaxially, softly pubescent abaxially, especially on midrib and nerves, bases acute, apices shortly acuminate, nerves 15–20 on each side, acute, scarcely arcuate, inarched and looped at extreme margin, ± prominent on both surfaces in sicco, secondary venation subscalariform, petiolules 4-15 mm, swollen basally. Thyrse to 58 cm, with branches to 10(–25) cm in male, bearing subopposite cymules of 1–3 flowers; axes densely tawny pubescent; bracts 5–18 by 1–1.5 mm, subulate; bracteoles c. 1 mm, triangular, densely pubescent; pedicels c. 1 mm, articulated with short pseudopedicel, densely pubescent. Calyx c. 2.5 mm long, 3–4 mm diam., cupular, 4-or 5-lobed to half way, densely pubescent, the lobes broadly triangular, acute. Petals 4, c. 11 mm long, narrowly elliptic, densely adpressed pubescent, creamish, valvate, apex acute. Staminal tube glabrous, tough, margin weakly crenulate; anthers 8, c. 1.2 mm long, boat-shaped, glabrous, included, apiculate, weakly locellate. Disk c. 2.5 mm long, cylindrical, densely pilose within and apically without, margin 8-(or 9-)crenate, strigose. Ovary subglabrous to adpressed pubescent; 4-locular, style terete, proximally ± adpressed pubescent; stylehead short-cylindrical. Infructescence to 63 cm, flagelliform; axis densely tomentose. Capsules to at least 3 cm diam., subglobose or depressed globose, very shortly stipitate, pink, ± weakly pilose, 4-valved, white within, congested in distal 1/4 of axis. Seeds 2–4, c. 2 cm long, 1.2 cm diam., ellipsoid; testa blood red (tasteless but weakly astringent, Jacobs); hilum c. 8 mm long, oval.