Tree 10-25 m. Twigs stout, angular, (4-)5-6 mm diameter, indumentum minute, early glabrescent, hairs 1 mm; older twigs pale, later on blackish, usually coarsely irregularly longitudinally cracking and flaking; lenticels absent. Leaves chartaceous or thinly coriaceous, elliptic-oblong or oblong(-lanceolate), 15-35 by 6-11.5 cm, base broadly rounded or subcordate, apex acute-acuminate; upper surface olivaceous brown, lower surface dull, concolorous, glabrous; not obviously papillose; dots absent; midrib flat or slightly raised above, lateral nerves 17-24 per side, at 60-80° to the midrib, above (flat or) sunken, lines of interarching usually distinct, venation ± indistinct on both surfaces; petiole 15-25 by 2.5-4 mm; leaf bud 10-15 by (4-)5-6 mm, hairs rough, 1 mm. Inflorescences among the leaves and below, pedunculate, branched, hairs dense, woolly, rust-coloured, 1(—1.5) mm; in male: 2-4.5 by 2-3 cm, peduncle flattened, 4-6 mm, lower branches 5-7 mm, ending in a flower cluster, central axis 20-40 mm, with 1-3 clusters, each with 5-10 flowers, buds of various sizes; bracts caducous, pubescent; flowers with woolly rust-coloured hairs 0.3(-0.5) mm. Male flowers: pedicel slender, 4-6 mm, bracteole 3.5 mm, persistent; buds ovoid, 5-5.5 by 4-4.5 mm, apex (narrowly) rounded, base rounded, cleft c. 1/2, lobes 0.2 mm thick, at anthesis suberect. Androecium slender, 4.5 mm; androphore 1.5 by 0.7 mm, hairs conspicuous, brown, 0.2-0.3 mm; synandrium 3 by 0.8 mm, thecae 14-16, sterile apex ± blunt, 0.2 mm, glabrous. Female flowers not seen. Infructescences little-branched, 1.5-2 cm, glabrescent. Fruits 1 (or 2) per infruc-tescence, ellipsoid-oblong, 7.5-9.5 by 4-5 cm, early glabrescent, hairs dense, scurfy, less than 0.1 mm long, glossy dark brown; pericarp 15(-20) mm thick; seeds ellipsoid-oblong, 4.5-5.5 cm; fruiting pedicel (2-)5 mm.
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