Tree 10-25 m. Twigs somewhat angular or ± compressed, 2-3.5(-6.5) mm diameter, with appressed hairs 0.2 mm high, glabrescent, the bark brown or grey, smooth or finely cracked, with dense conspicuous lenticels of mixed size, even when young; at the base of each innovation a group of scars occurs (see note) Leaves chartaceous or thinly coriaceous, ovate-elliptic to oblong-lanceolate, widest at or below the middle, 10-25 by 4-9.5 cm, base short-attenuate to broadly rounded, apex acute, margin not revolute; upper surface olivaceous or brown, often glossy, lower surface grey-brown, with distinct, but not very dense appressed rusty hairs, late glabrescent; midrib above flat, narrow, 1 mm wide; nerves 11-18 pairs, at c. 45° to the midrib, distinct but not prominent below, venation on both surfaces a coarse, rather indistinct network; petiole 9-18 by 2-2.5 mm; leaf buds ± stout, 10 by 3 mm, composed of the unexpanded leaf often with in addition several scale-like cataphylls, densely appressed-pubescent. Inflorescences (broadly) paniculate, with rusty hairs 0.3-0.5 mm long; in male 3-8.5 cm long, up to 7 cm wide, many-flowered, in female to 2 by 1.5 cm, few-flowered; bracts broadly triangular, 2.5 by 3 mm, pubescent, caducous. Flowers rusty pubescent inside and outside, hairs 0.1(-0.2) mm long. Male flowers: pedicel 1.5-3.5 mm long; buds ellipsoid-oblong, 3-4(-5) by 2-3(-3.5) mm, cleft 1/3-1/2, lobes 3 or 4, (long-)triangular, at anthesis somewhat recurved, tube 2-2.5 mm long; androecium truncately ellipsoid, 1.5-2.3 by 0.7-1 mm, stipe to 0.2 mm; anthers 7-10, subsessile, the free apices 0.4-0.5 mm long, ± erect. Female flowers: pedicel 1.5-2.5 mm long; buds narrowly ovoid, 2.7-3 by 2 mm, cleft 1/2-3/4, lobes (2 or) 3, long-triangular, ± recurved, tube 0.5-1.3 mm long; ovary subglobose, 1.2-1.5 mm diameter, densely minutely pubescent, stigma sessile, shallowly 2-lobed. Fruits 4-10 per infructescence, ovoid-ellipsoid, usually with truncate base, 1.8-2.2 by 1.1-1.3 cm, hairs 0.1-0.2 mm long; pericarp 0.7-1.3 mm thick; fruiting pedicel 3-7 mm long.