Tree 17 m tall. Twigs 1.5-2(-2.5) mm diameter, glabrescent, hairs 0.1 mm; older twigs (coarsely) striate, not flaking; lenticels small, inconspicuous. Leaves thinly coriaceous, elliptic-oblong, 8-15 by 2-4.5 cm, base (short-)attenuate, apex acute or (long-)acumi-nate; upper surface dark (blackish) brown, lower surface grey-brown, glabrescent, hairs inconspicuous, widely spaced, grey or cinnamon brown, scale-like, 0.1 mm or less; not papillose; dots absent; midrib flat or in a groove (and slightly raised) above, lateral nerves 16-18 per side, at 60-80° to the midrib, flat or sunken, lines of interarching and venation faint or distinct and contrasting below; petiole (6-) 10-15 by 1.5 mm; leaf bud 10 by 1 mm, hairs grey-brown, 0.1 mm. Inflorescences between the lower leaves, with dense hairs 0.1 mm; of the Knema-type: a sessile scar-covered brachyblast, less than 1 mm long; in male: with clusters of 1—3(—5) flowers, buds of various sizes; bracts caducous; in female (from infructescences): l(-3)-flowered; flowers with hairs 0.1 mm. Male flowers (Eyma 4283): pedicel slender, 3 mm long, bracteole comparatively large, broadly ovate, 2-2.5 mm long, apex acute, (sub)persistent; buds ovoid(-ellipsoid) to oblong, 5(-5.5) by 2-2.5 mm, apex ± blunt, cleft c. 1/3, lobes 1.5-1.7 mm long, 0.2-0.3 mm thick. Androecium slender, 4(-4.5) mm long; androphore 2 by 0.5 mm, longitudinally ± ribbed, almost entirely pubescent, hairs pale brown, 0.2-0.3 mm; synandrium 2 by 0.8-0.9 mm, thecae c. 12, the sterile apex irregularly ± blunt, 0.3 mm long. Female flowers not seen. Fruits (immature) sessile, solitary, just below the leaves, ± (ovoid-) ellipsoid, 3 by 1.5 cm, apex somewhat acute, base shortly narrowed; hairs dense, grey-brown, scale-like, 0.1 mm; pericarp 3 mm thick; seeds not seen; fruiting pedicel 10 by 2.5 mm, lenticellate, bracteole scar about median.
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