Tree 10-15 m. Twigs 4-7 mm diameter, early glabrescent, hairs 0.1 mm; older twigs pale grey-brown, longitudinally coarsely and irregularly warty-striate; remotely lenticellate or not. Leaves ± membranous or chartaceous, oblong-oblanceolate, ± gradually narrowed to the narrowly rounded or cuneate base, apex acute, (20-)25-40 by 7-12 cm; upper surface dark olivaceous or blackish brown, lower surface grey-brown, indumentum felty, cobweb-like, hairs scale-like, 0.1 mm or less (lens!); not papillose; dots absent; midrib little raised above, 4-5 mm wide towards the base, lateral nerves 30-35 per side, at 45-60° to the margin lines of interarching ± distinct, venation faint or invisible at both surfaces; petiole 17-20(-30) by 4-5 mm; leaf bud ± conical, 15 by (4-)6-8 mm, hairs 0.1 mm. Inflorescences between the leaves, of the Knema-type: in male a sessile woody brachyblast 5(—10) mm long, ± glabrous, few-flowered; female not seen; flowers minutely pubescent. Male flowers (immature, Wenzel 1152): pedicel 1-2 mm long, bracteole caducous; buds ovoid, 3 mm long, not angled. Androecium 2.5 mm long; androphore with dense appressed hairs in the lower part. Female flowers (from young fruit, FB 23019): ovary densely pubescent. Infructescence subsessile, knob-like, up to 1.5 cm long, ± below the leaves. Fruits solitary, ellipsoid, base and apex rounded, (5-)6-6.5 by 3-4.5 cm, hairs conspicuous, dense, bright rusty, 1-1.5 mm; pericarp 10 mm thick; seeds ellipsoid, 4 cm; fruiting pedicel 3 mm long.
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