Tree 10-20 m. Twigs 4-6 mm diameter, blackish brown, glabrous or very early glabrescent, hairs 0.1 mm; older twigs sometimes ± cracking and flaking; lenticels small and inconspicuous. Leaves chartaceous or thinly coriaceous, elliptic(-oblong) or oblong-lanceolate, 18—30(—35) by 6—11(—13) cm, base (attenuate or) rounded, or cordate, apex (sub)acute(-acuminate); upper surface olivaceous or brown, lower surface grey-brown with ± persistent indumentum or late glabrescent, hairs sparse, scale-like, 0.1 mm or less; distinctly papillose; dots absent; midrib above flat, lateral nerves 20-30 per side, at (45-)60-80° to the midrib, slender, ± sunken above, faint, lines of interarching and venation ± indistinct; petiole 15-30 by 3-4 mm; leaf bud 12-18 by 4-5 mm, hairs 0.1-0,2(-0.5) mm. Inflorescences pedunculate, between the leaves or below, with sparse hairs 0.1 mm or less, glabrescent; bracts small, caducous; in male: 8-10 by 2-4 cm, peduncle 40-50 mm, branches to 15 mm, central axis 20-30 mm long, with 2-4 subumbels, the latter with 5-10 flowers; buds of variable sizes; in female (from infructescences): 1-8 cm, peduncle 3-50 mm, lower branches opposite, to 10 mm long, central axis to 20 mm long, sometimes several ± crowded in condensed twigs, forming compound infructescences with apical leaf bud. Male flowers: pedicel (6-)8 mm long, bracteole broadly ovate, 3 mm, ± caducous; buds ovoid, 6.5-5.7 by 5 mm, cleft 1/3 to (nearly) 1/2, lobes 0.5-1 mm thick. Androecium cylindrical, 4 mm long, ± truncate; androphore 0.7 mm long, the lower 4/5 with dense hairs less than 0.1 mm; synandrium 3 by 1 mm, thecae 12-15, sterile apex shaped irregularly, blunt, 0.3 mm long. Female flowers not known. Fruits 1-3 per infructescence, broadly ellipsoid to ellipsoid-oblong, 5-7.2 by 3-4.5 cm, hairs light to dark brown, scurfy, 0.1 mm, partially glabrescent; pericarp 5-8 mm thick; seeds (ellipsoid-)oblong, 4.5-5 cm; fruiting pedicel 3-6 mm, coarsely fissured, scar of bracteole (sub)apical.
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