Tree to 30 m. Bark rough throughout, grey-brown to grey-black. Juvenile leaves lanceolate to ovate, green, concolorous. Adult leaves lanceolate, acuminate; lamina 12–20 cm long, 1.5–3 cm wide, green, concolorous; lateral veins just visible, at 40°–45°; intramarginal vein up to 1 mm from margin; petiole 20–30 mm long. Peduncle slightly flattened or angular, 15–30 mm long; pedicels angular, 8–12 mm long. Buds fusiform, 4-angled; operculum conical, often narrower than hypanthium, 6–7 mm long, 4–5 mm wide; hypanthium obconical, 6–7 mm long, 4–5 mm wide. Fruits obconical, 4-angled, 9–10 mm long, 6–8 mm wide; disc often obscure, descending; valves 4 or 5, included. Seeds suborbicular, ovoid or elliptic, grey brown.