Tree 5-30 m. Twigs 1.5—3(—5) mm diameter, faintly triangular, ± late glabrescent, hairs rusty to blackish brown, mealy, 0.5-1 mm; older twigs sometimes flaking; lenticels absent. Leaves membranous or chartaceous, (elliptic-)oblong, 8-23 by 3-10 cm, base attenuate or (broadly) rounded, apex acute-acuminate (or ± blunt); upper surface greenish or (dark) brown, lower surface grey, late glabrescent or hairs (sub)persistent, dense, interwoven, brown or grey, stellate, 0.1-0.2 mm, mixed with scattered brown dendroid hairs 0.5(-0.7) mm rendering the surface with a powdery appearance; not papillose; dots absent; midrib flat, glabrescent above, lateral nerves (6-) 10-15 per side, at c. 60° to the midrib, sunken below, lines of interarching ± distinct, venation faint or invisible; petiole 10-22 by 2-3 mm; leaf bud 6-16 by 2-5 mm, hairs shaggy, 0.5-1 mm. Inflorescences with rust-coloured hairs 1 mm, pedunculate, in male 1-7, each axillary to caducous cataphylls along short-shoots 1-5 cm long, in female fewer; short-shoots to 1 cm long and ending in a reduced leaf bud, axillary to foliage leaves; bracts 3-4 mm, caducous; male: peduncle 8-20 mm, with (sub)opposite wart-like lateral branches, each with a fascicle of 1-3 flowers, and with or without an apical central flower, buds ± equal in size; in female: smaller, peduncle 5-10 mm, apically 1-3-flowered; flowers easily disarticulating, with shaggy hairs 0.5-1.5 mm. Male flowers: pedicel 7-12 mm long, brac-teole subcircular to broadly ovate, 3-4 mm; buds ellipsoid or obovoid, inside towards base verrucose, 7-9 by 5-8 mm, not collapsing on drying, cleft 1/5-1/3, lobes 0.5 mm thick. Androecium (3-)4-5 mm; synandrium 3-4.5 by l-1.5(-2) mm, at apex shallowly hollowed to 0.5 mm, thecae (14-)20-26, at apex incurved, at base contracted into slender androphore, 0.5-1 mm, glabrous, but usually with frill of dense hairs 0.5-1 mm at the bottom of the perianth. Female flowers: pedicel thickened towards apex, 6-10 mm long, bracteole caducous, 1-4 mm below apex; buds ovoid, 1 by 1 mm; ovary ovoid, 4 mm long, with lanose hairs 2(-3) mm; style including stigmas 1.5-2 mm, lobes shallowly lobulate. Fruits l(-3) per (partial) infructescence, subglobose or ellipsoid, apex usually ± hooked, 3-5.5 by 2.5-3 cm, hairs dense, shaggy, (red-)brown, (0.5—) 1—1.5(—3) mm; pericarp 4-9 mm thick; seeds ellipsoid, 2 cm; fruiting pedicel 6-12 mm long.
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