Tree, up to 25 m, 40 cm dbh. Twigs glabrous. Axillary buds very inconspicuous, ± enclosed between basal part of the petiole and the twig. Petiole A.5-7 mm, often appearing longer because of the narrow leaf base, transversely wrinkled. Leaf-blade 6-12.5 by 2.7-5 cm, attenuate into a narrow petiole-like part; above (very) shiny, greenish to dark olive-greenish, midrib distinctly prominent; beneath yellowish brown to greenish brown, very shiny, midrib flat to faintly sunken, rarely faintly prominent or a narrow crest, secondary nerves 4-7 pairs, forming an incomplete, indistinct intramarginal nerve, tertiary nerves rather indistinct to obscure; glands very few, mostly situated above the middle, 0.3-0.7 mm diam. Inflorescences shorter than the leaves; axes grooved, densely minutely appressedly greyish hairy. Pedicel slightly grooved, 4-5 mm, very densely minutely appressedly greyish hairy. Sepals dark brown to blackish; outer ones c. 3 by 2.4-3 mm, with scattered, indistinct, small glandular spots, sometimes with 2 protruding glands halfway; inner sepals c. 4-4.8 by 2.8-3.5 mm, slightly keeled, with few glandular spots. Petals white, when dry dark brownish, the longest one 7-9 mm; carina very densely half-patently greyish pubescent outside, ± hairy inside in apical part; other petals glabrous. Stamens: anthers 0.5-0.7 mm long, faintly hairy. Ovary dark brownish, ribbed, slightly appressedly hairy on the ribs in apical part, or glabrous; ovules 9-14. Fruit 1.2 cm diam., blackish, slightly shiny, finely pustulate; pericarp rather thin, hard.
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