Tree 25-50 m. Twigs 4-7(-10) mm diameter, early glabrescent, hairs 0.2 mm; older twigs brown or blackish, coarsely longitudinally fissured or cracked, tending to flake; lenticels absent. Leaves thinly coriaceous, oblong-lanceolate, 25-45 by 8-12 cm, base narrowly rounded to cuneate, apex short acute(-acuminate); upper surface olivaceous, sometimes red-brown tinged, lower surface greyish olivaceous, almost glabrous, hairs few, scattered, scale-like, pale brown, 0.1-0.2 mm; distinctly papillose (lens!); dots absent; midrib above slightly raised, lateral nerves 25-30 per side, at 60-80° to the midrib, sunken above, lines of interarching and (coarsely reticulate) venation indistinct; petiole 20-35 by 3-5.5 mm; leaf bud 15-25 by 3-5 mm, hairs 0.2-0.5(-l) mm. Inflorescences between the leaves, with shaggy woolly hairs, 1 mm; in male: peduncle somewhat flattened, 15-25 mm long (as in panicle-like inflorescence), ending in a (Knema-likt) scar-covered brachyblast 3-6 mm long, with a subumbel of 2-5 flowers, buds strongly varying in size; bracts minute, caducous; female (from infructescences): 5 mm long, few-flowered; flowers with dense rusty hairs 0.5-1 mm. Male flowers: pedicel 6 mm long, bracteole ovate-elliptic, c. 5 mm, subpersistent; buds hard-carnose, obovoid-ellip-soid, 7 by 4.5(-5) mm, apex broadly rounded, cleft nearly halfway, lobes 0.8 mm thick. Androecium 4-4.3 mm; androphore 0.8-1 by 1 mm, with hairs 0.5 mm; synandrium faintly triangular, 3 by 2 mm, thecae c. 20, sterile apex ± flat and somewhat hollowed in the centre, with shallowly lobulate edge (the lobules corresponding with the anthers). Female flowers not seen. Fruits solitary on short infructescences 0.5-1 cm long, broadly ellipsoid, 6.5-7 by 5 cm, hairs ± persistent, dense, scurfy, 0.1-0.2 mm, in immature fruits somewhat longer, 0.5(-l) mm (breaking off at maturity?); pericarp 10-15 mm thick; seeds broadly ellipsoid, 3.5 cm; fruiting pedicel thick, 2-3 mm long, 5 mm diameter.
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