Tree 20 m. Twigs 1.5-2(-2.5) mm diameter, glabrescent, hairs (pale) brown, 0.1 mm; older twigs blackish brown, coarsely striate, tending to crack longitudinally, not flaking; lenticels indistinct. Leaves thinly chartaceous (but conspicuously brittle when dry), elliptic-oblong, 7-12 by 3-5.5 cm, base short-attenuate to broadly rounded, apex broadly acute(-acuminate) with blunt tip; upper surface dark (olivaceous to) brown, glabrous, lower surface dark brown, glabrous; not papillose; dots absent; midrib slender, raised above, lateral nerves 10-13 per side, at c. 60° to the midrib, slender, flat and faint above, slightly raised, concolorous below, lines of interarching and venation (a coarse network) indistinct; petiole 12-15 by 1.5 mm; leaf bud 8-10 by 1.5 mm, hairs dense, appressed, yellow-brown, 0.2(-0.3) mm. Inflorescences among the leaves, glabrescent, hairs 0.1-0.2 mm; in male: peduncle 5-7 mm, ending in a short scar-covered brachyblast 1 mm, buds 2 or 3, of different sizes, hairs greyish, 0.1 mm; bracts minute, caducous. Male flowers: pedicel 4 by 0.3-0.4 mm, bracteole ovate-ellipsoid, 1 mm, persistent; buds membranous, ovoid-oblong, 4-4.2 by 2-2.2 mm, apex ± blunt, not angled, base broadly rounded, cleft 1/4, lobes 1 mm long, 0.2 mm thick, at anthesis ± curved outwards. Androecium 4 mm; androphore 1.5 by 0.4 mm, glabrous but drying with an irregularly warty surface; synandrium 2 by 0.5 mm, thecae 12-14, sterile apex ± blunt, 0.2-0.3 mm. Female flowers and fruits not seen.
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