Tree 6-25 m. Twigs 2-4 mm diameter, (blackish) brown, early glabrescent, hairs (grey-)brown, up to 0.2 mm long; bark finely striate, not flaking; lenticels conspicuous. Leaves in 2 or 3 rows, membranous to thinly coriaceous (very brittle when dry), elliptic or obovate to oblong-lanceolate, 8-27 by 3-10.5 cm, base usually long-attenuate, apex acute(-acuminate); upper surface drying olivaceous to dark brown; lower surface early glabrescent; dots (not dashes) present (lens!); midrib flat above; nerves 8-16 pairs, thin, flat, or sunken above (in var. glabra sometimes ± raised), lines of interarching indistinct; venation lax, indistinct on both surfaces; petiole 10-15 by 1.5-2.5 mm; leaf bud 7-12 by 1.5-2.5 mm, slender, in tristichous twigs slightly thicker, with (grey-)brown hairs 0.1-0.2 mm. Inflorescences among or behind the leaves, with dense to sparse hairs to 0.1 mm long, sometimes glabrescent; in male: (2 or) 3 (or 4) times branched, many-flowered, 5-10 by 4-7 cm, peduncle 0.4-1.5 cm long; in female: 1 or 2 times branched, 2-4 by 1-3 cm; bracts elliptic-lanceolate, 2-5 mm long, short-pubescent, caducous; flowers in male (2-)3-5 in loose clusters, in female solitary or 2 or 3 together, glabrous; perianth (2-) 3-or 4-lobed, pedicel articulated or not, usually mixed in one inflorescence. Male flowers: pedicel slender or thickish; buds globose or broadly ellipsoid or obovoid, 1.5-2.5 mm long, cleft 1/2-2/3, lobes 0.2-0.3 mm thick; androecium (depressed-)globose, or ellipsoid or short-obovoid (Plate 3: 92a, b); thecae 18-30, almost completely sessile; androphore narrow, (0-)l-2 mm long. Female flowers: pedicel 0.5-1.5 mm long; buds ellipsoid, 2.5-3 by 2.2-2.5 mm, cleft 1/3 to c. 1/2; ovary ovoid, 1.5-2 by 1.2-1.5 mm, glabrous, the stigma narrowly 2-lobed, 0.1 mm high (var. glabra), or broad-lipped, 0.2 (-0.3) mm high (var. oviflora). Fruits 2-6 per infructescence, ovoid-ellipsoid, base (broadly) rounded, 1.8-2.4 by 1.4-1.9 cm, glabrous, drying blackish brown, without lenticel-like tubercles; pericarp 1-2.5 mm thick; fruiting pedicel 1-2.5 mm long; perianth not persistent.
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