Tree 10-15 m. Twigs 2-3(-4) mm diameter, glabrescent, hairs greyish, 0.1(-0.2) mm; older twigs (coarsely) striate; lenticels few, inconspicuous. Leaves chartaceous, elliptic-oblong or oblong-lanceolate, 15-43 by 4.5-13 cm, base narrowly to broadly rounded, apex acute or acuminate; upper surface olivaceous or (blackish) brown, lower surface grey-white (possibly by dense irregular papillae), glabrescent, hairs scale-like, 0.1 (-0.2) mm, stouter hairs leaving point-like scars; (larger) dots absent; midrib above slightly raised, lateral nerves 13-20 per side, at 45-70° to the midrib, sunken above, dark brown, much contrasting in colour below, lines of interarching and venation faint; petiole 10-20 by 2-4 mm; leaf bud 10-15 by 1.5-3 mm, hairs appressed, 0.1 mm. Inflorescences ± below the leaves, of the Knema-type: sessile, simple or forked, scar-covered, woody, brachyblasts up to 4 mm, with short brown hairs; in male: with 2-5 flowers, buds of various sizes; in female (from infructescences, BS 37070): similar to male, few-flowered; flowers with hairs 0.1-0.2 mm. Male flowers: pedicel 2.5-3 mm, bracteole 2-2.5 mm, persistent; buds ovoid-ellipsoid, 6 by 4 mm, apex narrowly rounded or subacute, cleft (1/4—)l/3, lobes (0.2-)0.3 mm thick. Androecium broad, 4-4.5 mm; androphore 1.5 by 0.6-0.7 mm, with few pale brown hairs 0.1-0.2 mm towards the base; synandrium 2.5-3 by 1.3-1.5 mm, thecae c. 20, sterile apex ± blunt, glabrous, 0.3 mm. Female flowers not seen. Fruits solitary, subsessile, ellipsoid, 3.5-4 by 2.5-3 cm, hairs dense, dark rust-coloured, scurfy, 0.1 mm or less; pericarp 4 mm thick; submature seeds ellipsoid, 2.5-3 cm; fruiting pedicel rather stout, 4 mm long.
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