Tree 10-40 m. Twigs (2-)2.5-4 mm diameter, (late) glabrescent, hairs rusty, woolly, 0.2-0.5 mm; older twigs blackish, longitudinally and transversely cracking, or coarsely flaking; lenticels inconspicuous. Leaves chartaceous or (thinly) coriaceous, elliptic-oblong or oblong-lanceolate (rarely linear-oblong), 12-28 by 4-8.5 cm, base rounded or short-attenuate, apex acute-acuminate; upper surface olivaceous-brown, glossy, lower surface grey-brown, early glabrescent, hairs 0.1-0.3 mm, often with hair scars; distinctly papillose; dots absent; midrib ± raised above; lateral nerves 13-20 per side, at 45-80° to the midrib, sunken, lines of interarching indistinct, venation sometimes visible; petiole 15-30 by 1.5-3 mm, glabrescent; leaf bud 8-15 by 2.5-4 mm, hairs shaggy or appressed 0.5—1(—1.5) mm. Inflorescences between the leaves or below, pedunculate, with hairs 1(—1.5) mm; in male: 1.5-2 by 1.5-2 cm, peduncle 5-12 mm long, branches to 4 mm, central axis absent or to 6 mm, simple (or bifid), apical subumbel(s) of 5-15(-20) flowers, buds of various sizes; bracts 4 mm, caducous; female inflorescences like the males, but shorter and stouter, 1-4-flowered; flowers with shaggy hairs 0.5-1 mm. Male flowers: pedicel 5-6(-9) mm, bracteole 4-5 mm, rounded, or truncate or faintly angular (3-topped), subpersistent; buds ovoid-ellipsoid, 6-7 by 4.5-5 mm, cleft 1/5-1/4, lobes 0.3-0.4 mm thick. Androecium 5-5.5 mm; androphore 1.2-2 by 1-1.2 mm, hairs 0.5 mm in the lower 3/4; synandrium 2.8-3.5 by 1 mm, thecae 12-16, sterile apex ± acute, 0.5(-l) mm. Female flowers: pedicel 3 mm, bracteole 5 mm, caducous; buds ovoid (-ellipsoid), 6 by 4.5 mm, cleft c. 1/4; ovary 3.5(-4) by 3 mm, hairs 0.5 mm, stigma 0.5(-1) mm long. Fruits 1 or 2 per infructescence, broadly ovoid-ellipsoid, 7-9 by 5-6 cm (but see note 2), glabrescent, hairs rust-coloured, mealy, 0.5 mm; pericarp 15-20 mm thick; seeds ellipsoid, 4-5 cm; fruiting pedicel short, stout, 4-11 by 5-7 mm.
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