Tree 7-25 m. Twigs faintly angular, 1.5-2.5 mm diameter, early glabrescent, indumentum minute; older twigs finely longtidudinally cracking; lenticels not obvious. Leaves membranous or (thinly) chartaceous, oblong or lanceolate, 6-16 by 2-3.5(-4) cm, base narrowly rounded or acute, apex subacute or blunt; upper surface olivaceous brown, lower surface grey-brown, seemingly glabrous, but hairs (sub)persistent, scattered, less than 0.1 mm; papillose (lens!); dots absent; midrib above flat or slightly raised, on lower surface yellowish or reddish brown, contrasting in colour, lateral nerves 15-22 per side, at 60-70° to the midrib, above and below flat or sunken and faint, lines of interarching and venation faint or invisible; petiole 10-15 by 1.5-2 mm; leaf bud 5-10 by 1-1.5 mm, hairs 0.1 mm. Inflorescences between the leaves or below, pedunculate, early glabrescent, the lateral branches with sessile, slender, scar-covered brachyblasts, central axis short or reduced to one flower; bracts ± acute, caducous, 1-1.5 mm long; male inflorescence: 4-7 cm long, peduncle flattened, 25-40 by 2-2.5 mm, lateral brachyblasts to 20 mm (subsp. minutiflora), flowers in subumbels of 2-4(-5), buds subequal in size; female like male, shorter (20-30 mm), 2-4-flowered, the central axis short or absent, each sub-umbel reduced to a single flower; flowers membranous, hairs 0.1 mm (densest at apex and base). Male flowers variable in size; pedicel slender, bracteole apical; buds cleft 1/5-1/4; androecium slender, the apical half fertile with 8-14 thecae, sterile apex absent or to 0.2 mm. Female flowers: buds urceolate, 4.5 mm long; ovary pubescent (see subsp. minutiflora). Fruits not seen.
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