Shrub or treelet, 1.5-7 m tall. Twigs (faintly) angular, (0.5-) 1-1.5 mm diameter, early glabrescent, hairs less than 0.1 mm; older twigs neither cracking nor flaking; lenticels inconspicuous. Leaves membranous, (elliptic-)oblong, 6-15.5 by 2-5 cm, base attenuate, apex acute-acuminate; upper surface olivaceous-brown, lower surface ± pale greyish brown (rather concolorous with upper surface), early glabrescent, hairs less than 0.1 mm; not papillose; dots absent; midrib raised above, lateral nerves 9-16 per side, at 60-80° to the midrib, sunken (and indistinct) above, brown and contrasting in colour below, lines of interarching distinct, venation distinct or not; petiole 7-15 by 1-1.5 mm; leaf bud 5 by 0.5-1 mm, hairs less than 0.1 mm. Inflorescences between the leaves, of the Knema-type: a sessile or up to 1 mm pedunculate, scar-covered brachyblast; in male: simple or forked, up to 5 mm long, ending in a cluster of 1-4 flowers, buds of various sizes; female with a single flower, sessile;, flowers thinly or scarcely with hairs less than 0.1 mm, looking as if glabrous. Male flowers: pedicel 6.5-10 by 0.4(-0.5) mm, bracteole ± ovate, caducous, scar 2-4 mm below the apex; buds elongate, tubiform, (6-)7-9.5 by 1.8-2 mm, slightly narrowed or not in the lower half, apex ± blunt, base ± rounded-attenuate, inner surface in basal part minutely verrucose; cleft c. 1/6, lobes membranous, 1-1.7 mm long, 0.2 mm thick. Androecium slender, 6-9 mm; androphore 3-4.5 by (0.3-)0.4-0.5 mm, with hairs 0.1 mm or less in the lower 1/2-2/3; synandrium 2.4-4.2 by 0.6-0.7 mm, thecae c. 12, subacute, sterile apex 0.3(-0.4) mm. Female flowers (sub-mature) solitary, pedicel thread-like, at least 14 mm long, bracteole scar about median; buds (narrowly) ellipsoid-oblong, at least 5 by 1.5-2 mm, lobes 1 mm; ovary not seen. Fruits solitary, oblong, 5 by 1.5 cm, apex ± blunt, base gradually contracted into a narrow pseudostalk for nearly half of the total length of the fruit, hairs sparse, greyish brown, appressed scale-like, less than 0.1 mm; pericarp 1 mm thick; seeds ellipsoid, c. 2 cm long; fruiting pedicel filiform, 20-25 by 0.5 mm, bracteole scar below the middle.
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