Tree 8-25 m. Twigs (1-) 1.5-2 mm diameter, sometimes faintly angular, early gla-brescent, hairs 0.1-0.2 mm; older twigs (blackish) brown; lenticels few, sometimes distinct; axillary buds sometimes conspicuous. Leaves chartaceous, (ovate-)oblong-lanceo-late, 8-16 by 1.5-4.2 cm, base shortly attenuate, apex acutish, sometimes ± rounded, or with blunt tip; upper surface olivaceous or dark brown, lower surface brown-grey, early glabrescent, hairs sparse, whitish, less than 0.1 mm; papillose; dots absent; midrib flat or sunken above, lateral nerves 15-20 per side and with additional smaller intersecondary ones often present, at 45-60° to the midrib, sunken above, indistinct below, lines of interarching and venation indistinct; petioles 10-20 by 1-2 mm; leaf bud 10-12 by 1.5-2 mm, with golden hairs 0.3-0.5 mm. Inflorescences among the leaves or below, with short peduncle, approaching the Knema-type, short-pubescent, bracts small, caducous; in male: peduncle (l-)2-4 by 1-1.5 mm, brachyblast scar-covered, simple or forked, thickish, to 3 mm, with fascicles of (l-)2-6 flowers, buds of various sizes; female inflorescence similar, 1-4-flowered; flowers with hairs 0.1-0.2 mm. Male flowers: pedicel 3-5 by 0.4-0.6 mm, bracteole ± ovate, 1.5-2 mm, subpersistent; buds ± carnose, ellip-soid(-oblong), 4-5 by 2-3 mm, rounded at both ends, apical part ± angled, cleft c. 1/3, lobes 1.5-2 mm long. Androecium 3-4 mm; androphore 1-1.5 by 0.8-1 mm, the lower half with dense appressed brown hairs less than 0.1 mm; synandrium ellipsoid-oblong, 2-2.2 by 1-1.2 mm, thecae c. 16, sterile apex blunt, 0.2-0.3 mm. Female flowers not seen. Fruits solitary, ellipsoid, 4-5.5 by 2.5-4.5 cm, apex ± rounded, faintly beaked, base ± attenuate, hairs dense 0.1 mm; pericarp 5-8 mm thick, woody, often ridged at one side, somewhat warty or not; seeds ellipsoid, 2.5 cm; fruiting pedicel woody, straight or curved, 5-10 by 2.5-5 mm, cracked, sometimes with some lenticels.
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