Tree 7-25 m. Twigs 3-6 mm diameter, late glabrescent, hairs rough-woolly, rufous, 1-1.5 mm; older twigs blackish, cracking and flaking; lenticels indistinct or absent. Leaves coriaceous, oblong (-lanceolate), 14-35 by (3.5—)9—11.5 cm, base rounded or short-cuneate, apex acute-acuminate; upper surface glossy, olivaceous or brown, lower surface grey-brown, early glabrescent, hairs mealy, rust-coloured, 0.1-0.2 mm; distinctly papillose; dots absent; midrib raised above, glabrescent, lateral nerves 15-22 per side, at (45-)60-70° to the midrib, usually (not always, see note 1) sunken above, lines of inter-arching indistinct, venation sunken above, rendering the blade somewhat bullate; petiole 25-50 by 2.5-5 mm, late glabrescent; leaf bud 10-15 by 4-5 mm, hairs 1-1.5 mm. Inflorescences between the lower leaves or below, pedunculate, branched, with rough-woolly hairs 1-1.5 mm; bracts 3-5 mm, late caducous; in male: 2.5-5.5 by 2-3 cm, peduncle (10-)15-30 mm, basal branches 5-10 mm long, central axis 5-25 mm, each branch with 1 or 2 (or 3) (sub)sessile brachyblasts, each with a subumbel of 5-10 flowers, buds of various sizes; in female: 1-1.5 cm long, hardly branched, rather thick, 3-5-flowered; flowers with hairs 0.5-1 mm long. Male flowers: pedicel 2-3(-5) by 1 mm, bracteole 3 mm diameter (apex sometimes subtruncate), late caducous; buds ellipsoid (-oblong), 4-4.5 by 3 mm, apex narrowly rounded, cleft l/4(—1/3), lobes 0.3(-0.4) mm thick. Androecium (3-)3.5-4 mm long; androphore 1.5-2 by 0.8-1 mm, with dense hairs 0.5 mm in the lower 4/5; synandrium oblong, 2-2.2 by 0.8 mm, thecae 10-14, sometimes at apex loosely coalescent and proceeding into a (0.1-)0.2-0.3 mm long, lobed, sterile apex. Female flowers: pedicel short; buds ovoid, 5 by 4 mm, cleft c. 1/4; ovary rusty tomentose. Infructescence 1-1.5 cm. Fruits generally solitary, ellipsoid, (5-)6-7 by 3.5-4 cm, hairs velvety, 1-2.5 mm; pericarp (5—)10(—15) mm thick; seeds ellipsoid, 4-5 cm; fruiting pedicel rather thick, 2-5 mm long.
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