Tree 10-37 m. Twigs stout, with wart-like thickenings marking the leaf scars, (3-)5-10(-20) mm diameter, rather late glabrescent, hairs grey-brown to rusty 0.5-1 (-1.5) mm long; bark grey-brown, lower down grey-blackish, rough, longitudinally cracking and often ± flaking; lenticels inconspicuous. Leaves in 3-5 rows, generally clustered towards the apex of the twigs, coriaceous, elliptic-oblong to (sub)lanceolate, 9-21 by 2-6 cm, base attenuate, apex acute(-acuminate); upper surface of mature leaves glabrous, ± glossy or not, olivaceous-brown, lower surface pale brown, early glabrescent; ± round to line-shaped dark brown or blackish dots present; midrib flat, glabrous above; nerves 12-20 pairs, flat above and below, lines of interarching invisible; petiole long in proportion to the blades, 25-50 by 2-4 mm, late glabrescent, hairs 0.5-1.5 mm; leaf bud stout, 10-15 by (3-)4-5 mm, with dense grey-brown to rusty hairs 0.5-1.5 mm long. Inflorescences behind the leaves, with dense hairs 1-1.5 mm long; in male: 2 or 3 times branched, many-flowered, 10-13 by 5-6 cm, the peduncle 1.5-2.5 cm long; in female: ± fewer-flowered, 3-5 cm long; bracts elliptic to lanceolate, ± boat-shaped, 4-15 mm long, with dense hairs 0.5-1.5 mm, glabrous inside, late caducous; flowers in loose clusters of 5-10, glabrous; perianth 3-(or 4-)lobed, pedicel articulated. Male flowers: pedicel 1.5 (-2) mm long; buds (depressed-)globose, 2 by 2-2.3 mm, cleft (l/2-)l/3, not collapsing on drying, the lobes 0.2 mm thick; androecium ± globose, 1-1.2 by 1.7-1.8 mm (Plate 2: 40); thecae 24(-30), ± completely sessile, column broad with shallow apical cavity; androphore narrow, 0.2 mm long. Female flowers (Sinclair, I.e.: 134): immature ovary glabrous. Fruits 1-6 per infructescence, ovoid, 3-5 by 2.5-4 cm, glabrous, drying dark brown or somewhat bluish black, not warted; pericarp hard, 5-8(-10) mm thick; fruiting pedicel 2-8 mm long; perianth not persistent.
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