Shrub or small tree, 1-20 m. Twigs 1.5-4 mm diameter, yellowish brown or dark brown, very early glabrescent, hairs 0.1 mm or less; older twigs tending to crack longitudinally; lenticels not conspicuous. Leaves membranous or subcoriaceous, elliptic-oblong to oblong-lanceolate, 8-24 by 3.5-10 cm, base (short-)cuneate or rounded, apex acute-acuminate, margin ± revolute on drying; upper surface olivaceous, lower surface grey-or pale brown, early glabrescent, or extremely small whitish stellate scale-like hairs persistent, but leaves appearing glabrous; not papillose; sparse or dense dots and dashes present (lens!); midrib flat or slightly raised above, lateral nerves 10-16 per side, at 60-80° to the midrib, lines of interarching distinct or not, sunken above, venation forming a coarse network, faint at both surfaces; petiole 12-25 by 1.5-3 mm; leaf bud 10-15 by 1.5-3 mm, hairs 0.1 mm. Inflorescences among the leaves or rarely below, pedunculate, indumentum very minute; in male: 1.5-4 cm, with flattened peduncle 5-30 (-35) mm, with 2 or 3 up to 10 mm long scar-covered brachyblasts, with or without a short smooth basal part, each arm with a subumbel of 3-10 flowers, buds subequal in size, the central axis sometimes reduced to (the scar of) one flower; female inflorescences much smaller, peduncle 5-10(-20) mm, with (1 or) 2-4 flowers, but sometimes along short leafless shoots suggesting larger inflorescences; bracts minute, caducous; flowers largely glabrescent, hairs appressed, 0.1 mm or less. Male flowers: pedicel 5-15 by 0.5-1 mm, bracteole 1-1.5 mm, caducous, apical or up to 2 mm below; buds membranous or horny, (ovoid-)oblong, sometimes ± tubiform, much narrowed towards the apex, 10-20 by 2-3.5 mm, the apical part ± triangular in cross section, base narrowly rounded, cleft at the apex only, lobes ± thin, 0.2-0.5 mm thick, (1-)1.5 mm long, at anthesis not recurved. Androecium slender, 6-9 mm; androphore slender, 2.5-4.5 by 0.4-0.6 mm, minutely appressed-pubescent in the lower 3/4; synandrium 3.5-4.5 by 0.6-1 mm, thecae 10-12, gradually passing into the androphore, sterile apex 0.2-0.4 mm, blunt (sometimes irregular). Female flowers: pedicel slender, 6-12 mm, bracteole caducous, close to the apex; buds ± flask-shaped, narrowed towards the apex, 10-12 by 3-4 mm, lobes 1-1.5 mm long; ovary ovoid-oblong, 4-5 by 2.5-3 mm, hairs dense, appressed, less than 0.1 mm. Fruits usually solitary, ± ellipsoid(-oblong), 4.5-6.5 cm, pubescent or glabrescent, style-remnant persistent; seeds 3 cm; fruiting pedicel straight, slender, 1-2 cm.
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