Tree 12-35 m. Twigs (2.5-)3-5 mm diameter, at first with dense rusty hairs 0.5(-1) mm, late glabrescent; bark finely striate, not flaking; lenticels inconspicuous. Leaves membranous, elliptic to oblong, 9-27 by 4-12 cm, base rounded to attenuate, apex ± obtuse to acute-acuminate; upper surface drying olivaceous(-brown), glabrous, lower surface with persistent rather dense stellate-dendroid hairs of mixed size, 0.3-1 mm long; dots absent; midrib flattish above, sometimes late glabrescent; nerves 9-21 pairs, flat or sunken, often late glabrescent above; lines of interarching ± indistinct; venation lax, faint above; petiole 13-22 by 1.5-4 mm, late glabrescent; leaf bud 15-20 by 3-4 mm, with dense hairs 0.5 mm long. Inflorescences with dense stellate-dendroid yellow-brown to rusty hairs 0.5-1 mm long; in male: 4 or 5 times branched, many-flowered, I 12-20 by 10-14 cm, peduncle 2-4 cm, flowers ± densely clustered (immature buds \ + angular); in female: much branched, rather many-flowered, 3-6(-10) cm long; bracts I broadly ellipsoid, acutish, 2-5 mm long, densely pubescent, caducous; flowers (male) in clusters of 5-20, with hairs 0.1-0.3 mm long, perianth 3-lobed, pedicel not articulated. Male flowers: pedicel slender, 1-1.5 mm long; buds subglobose or broadly obovoid, 0.8-1 by 0.7—1(—1.1) mm, pubescent or late glabrescent, cleft c. 1/2, lobes 0.1 mm thick; androecium broadly obovoid, 0.5-0.7 by (0.3-)0.5-0.6 mm, synandrium at apex somewhat flattish, depressed in the centre, subcircular in cross section (Plate 2: 53); thecae 10, completely sessile, towards the apex not or hardly incurved, 0.25-0.4 mm long, column broad, with broad, apical hollow to c. 1/10, androphore conspicuous, continuous with the anthers, ± tapering, 0.2-0.3 mm long. Female flowers: pedicel 1.5 mm long; buds ellipsoid, 2.4 by 1.8-2 mm, pubescent, cleft 1/4-1/3; ovary broadly ellipsoid, 1.5 by 1.2 mm, grooved at one side, glabrous, stigma broad, shallowly 2-lobed, 0.2 mm high. Fruits 5-15 per infructescence, broadly ellipsoid, 1.9-2.3 by 1.6-1.8 cm, glabrous, smooth; pericarp 2 mm thick; fruiting pedicel 2-4 mm long; perianth not persistent.
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