Tree 4-10 m. Twigs subterete or bluntly (tri)angular, or mostly with two sharp lines or ridges between the petioles, (2-)3(-4) mm diameter, ant-swellings absent, early gla-brescent, hairs 0.1 mm or less; older twigs with non-contrasting lenticels. Leaves charta-ceous or thinly coriaceous, (obovate-elliptic-)oblong or oblong-lanceolate, 10-23 by 2.5-8 cm, base attenuate or narrowly rounded, apex acute-acuminate; upper surface olivaceous or brown, lower surface grey (-brown), late glabrescent or indumentum (sub)per-sistent, hairs flocculose, ± scattered, 0.1 (-0.3) mm; not distinctly papillose; dots absent; midrib slightly raised above, lateral nerves (15-)18-22(-25) per side, at 60-80° to the midrib, flat or sunken above, lines of interarching rather distinct, venation indistinct; petiole 8-15 by 2-4 mm; leaf bud 10-15 by 2 mm, hairs grey-brown, 0.1 mm. Inflorescences between the leaves, ± of the Knema-type: a (sub)sessile or to 4 mm pedunculate scar-covered knob-like brachyblast up to 5 mm long, ± glabrescent; bracts 1 mm, caducous; in male: with a subumbel of 3-6 flowers, with buds of ± variable sizes; female as male, buds up to 8 in a cluster, subequal in size; flowers with hairs 0.1 mm. Male flowers: pedicel 4-5 mm long, bracteole persistent; buds ellipsoid-oblong or oblong-lanceolate, 6 or 10 mm long; see further under the subspecies. Female flowers (Kalkman 5312): pedicel 2-3 mm, bracteole minute, ± caducous; buds ovoid(-oblong), 4.5 by 3 mm, lobes 1.5-2 mm; ovary ovoid, including a 3.5 mm long stigma, short-pubescent. Fruits solitary or in clusters of up to 5, ovoid(-oblong), 2.5 by 1.5(—2) mm, apex ± acute, often narrowed into 2 mm long style-remnant, base rounded or sometimes shortly narrowed, hairs persistent, mealy, rusty, 0.1 (-0.2) mm; pericarp 2-3 mm thick; seeds ellipsoid, 1.5 (-2) cm; fruiting pedicel 3—5(—10) by 1.5-2.5 mm, often thickened by numerous irregular wart-like lenticels, bracteole scar apical.
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