Tree 4-20 m. Twigs 2-3 mm diameter, early glabrescent, hairs 0.1 mm or less; older twigs brown or rather pale; lenticels indistinct or absent. Leaves thinly chartaceous, lanceolate, 9-22 by 2-4.5 cm, base cuneate or (sub)rounded, apex acute(-acuminate) or ± blunt; upper surface olivaceous or brown, lower surface pale grey-brown, early glabrescent; densely papillose; dots absent; midrib above flat, much raised below, yellow-brown, lateral nerves 20-30 per side, at 60-80° to the midrib, flat, hardly visible above, slightly raised below, lines of interarching and venation indistinct; petiole 10-20 by 1.5-2.5 mm; leaf bud 7-16 by 3-4 mm, hairs 0.1-0.5 mm. Inflorescences between the leaves and below, pedunculate, ending in a subumbel of flowers (but brachyblast absent); bracts minute, caducous; in male (PNH 118091, ± immature): peduncle 5-8 mm, subumbel with 3-6(-10) flowers, buds of various sizes; female similar, peduncle up to 25 mm, fewer flowered; inflorescences and flowers with rusty hairs 0.2-0.3(-0.5) mm. Male flowers: pedicel rather stout, 5-7 mm, bracteole 4 mm long, caducous; buds woody-coriaceous, ovoid or ellipsoid(-oblong), apex narrowly rounded, 6-6.5 by 4(-4.5) mm, cleft to over 1/2 (possibly nearly to the base), lobes 0.8 mm thick. Androecium broadly cylindrical, 2.5-3 mm; androphore 0.2 mm long, and broad, like a disc at the base of the synandrium, with sparse erect hairs 0.1-0.2 mm; synandrium 2-2.3 by 1 mm, thecae 16-18, sterile apex blunt, 0.2-0.4(-0.5) mm. Female flowers not seen; pedicel variable in length (see the subspecies). Infructescences: peduncle conspicuously longitudinally cracked. Fruits single or up to 3, subglobose or ellipsoid, (3.6-)4-5.5 cm long, hairs brown, scurfy, 0.1-0.2 mm; pericarp 7-10 mm thick, seeds not seen; fruiting pedicel glabrous.
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