Tree 5-15 m. Twigs 1-3 mm diameter, early glabrescent, hairs greyish rusty, (0.1-) 0.2 mm; bark striate, neither cracking nor flaking; lenticels inconspicuous or absent. Leaves membranous or thinly chartaceous, elliptic to oblong-lanceolate, 6.5-16.5 by 3-6.5 cm, base attenuate, apex acute-acuminate; upper surface drying olivaceous to greyish brown, glabrous, lower surface dull greyish brown, glabrous; dots absent; midrib raised above, glabrous; nerves 5-11 pairs, raised above, lines of interarching regular but faint; venation lax, faint; petiole 8-16 by 1.5-2 mm; leaf bud 5-8 by 1-1.5 mm, with dense hairs 0.2(-0.3) mm. Inflorescences with (sparse) stellate hairs 0.1-0.2 mm long; in male: rather many-flowered, about 3 times branched, 3-5 by 2-4 cm, peduncle 0.2-1 cm; in female: rather slender, few-flowered, 2-3.5 by 1 cm; bracts elliptic to oblong, 2-3 mm, pubescent, caducous; flowers in male in loose clusters of 3-8, perianth 3-(or 4-)lobed, glabrous, pedicel glabrescent or with few scattered hairs 0.2 mm in the lower half, not or indistinctly articulated. Male flowers: pedicel 1-2 mm long, somewhat tapering; buds globose to broadly obovoid, 0.8-1.3 by 1-1.5 mm, apex broadly rounded, base rounded to subattenuate, cleft c. 1/3 to nearly 1/2, lobes 0.2-0.3 mm thick, at base to 0.4 mm thick; androecium ± obovoid or ellipsoid, 0.5-0.7 by 0.5-0.8 mm, in cross section triquetrous (Plate 3: 68); thecae 8-12, suberect, 0.3-0.4 mm long, free for at least halfway, column largely hollow, the base continued into the somewhat tapering androphore 0.2-0.3 mm long. Female flowers: pedicel 1.5 mm long; buds ellipsoid, 2 by 1.5 mm, cleft c. 1/3 or slightly over; ovary ellipsoid, 1.3 by 0.8-0.9 mm, glabrous, stigma 2-lobed, 0.2 mm high. Fruits 1-3 per infructescence, ellipsoid, base sometimes shortly tapered, 1.7-2 by 1.4-1.5 cm, glabrous, without lenticel-like tubercles; pericarp 1-1.5 mm thick; fruiting pedicel 3-5 mm long; perianth not persistent.
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