Tree 10-30 m. Twigs sometimes faintly angular at apex, 2.5-6 mm diameter, early glabrescent, hairs 0.1 mm; bark coarsely striate, with a tendency to flake; lenticels conspicuous or not. Leaves coriaceous, elliptic to oblong-lanceolate, 8-35 by 3.5-13 cm, base attenuate to rounded, apex subacute to acute-acuminate; upper surface drying olivaceous to (dark) brown, usually with rather distinct hair scars, lower surface early glabrescent, drying with a reddish tinge; dots absent; midrib slightly raised above; nerves 8-20 pairs, slender, flat or slightly raised, lines of interarching faint; venation lax, faint on both surfaces; petiole 7-12 by 2.5-3 mm; leaf bud 8-13 by 2-3.5 mm, with hairs 0.1 (-0.2) mm long. Inflorescences behind the leaves, with ± dense hairs 0.1 mm; in male: sometimes short, robust, (2-)4-20 cm long, (2 or) 3 times branched, not many-flowered, peduncle 0.5-0.8 or 1.5-2 cm (subsp. macrophylla) long; in female (from infructescences): 1-1.5 or 5-7 cm (subsp. macrophylla) long, few-flowered; bracts not seen, caducous; flowers in male in loose clusters of 3-5(-8), perianth 3-or 4-lobed, glabrous, pedicel glabrescent or with few hairs 0.1 mm towards the base, not articulated. Male flowers: pedicel thickish, somewhat tapering or not, straight or ± curved (flowers reflexed), 1-2.5 mm long; buds broadly ellipsoid to ovoid-subglobose, 2.5-2.8 mm long, apex rounded, base shortly rounded and somewhat tapering into the pedicel, cleft l/2(-2/3), slightly wrinkled but not collapsing on drying, lobes 0.4-0.8(-l) mm thick; androecium ± laterally flattened, ± broadly obovoid 1-1.3 mm long (Plate 3: 86); thecae 6-16, erect, 0.9-1.1 mm long, largely sessile with free apices 0.1-0.3 mm; column broad, with apical hollow 0.1-0.3 mm; androphore ± tapering, broad, (0.1-)0.2-0.3 mm long. Female inflorescences and flowers known only in subsp. macrophylla: ovary glabrous. Fruits (l-)2-6 per infructescence, ellipsoid-obovoid or broadly ovoid, (3.5-)5 by 3-3.5 cm, glabrous; pericarp 5(-10) mm thick, ± woody towards inside; fruiting pedicel stout, 3 mm long; perianth not persistent.
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