Shrub or tree, up to 25 m, up to 30 cm dbh. Twigs glabrous. Petiole 10-18 mm, with (0-)2(-4) very distinct glands. Leaf-blade (10-)14-28 by (3.8—)4.5—10 cm, base often curved upwards and de-current-attenuate; above sometimes slightly bullate between the secondary nerves, greenish, midrib slightly to distinctly prominent, rarely slightly sunken, nerves finely prominent; beneath mostly brownish green, secondary nerves 7-10 pairs, forming a nearly complete rather prominent intra-marginal nerve; glands mostly rather few, scattered, 0.4-0.5 mm diam. Inflorescences sometimes un-branched, shorter than the leaves; axes grooved, ap-pressedly brown-velvety; bracts often opposite, with 2 small indistinct glands. Pedicel 2-12 mm, appres-sedly brown-velvety. Sepals shortly appressedly brownish hairy outside, ribbed inside; outer sepals 5-6.5 by 3.8-6.2 mm; inner sepals 6-7.2 by 3.7-6.2 mm. Petals yellow, or white and the upper ones with a yellow spot, when dry yellowish to dark-brown, the longest one 13-16 mm long; carina appressedly velvety outside, more or less densely hairy inside in apical part; other petals glabrous or hairy outside in apical part. Stamens: anthers 0.55-0.75(-0.8) mm long, shortly hairy. Ovary sessile or shortly stipitate, creamish brown, often about 8-ribbed when dry, the median ribs most prominent and hairy over ⅓-⅔ their length, the other ribs hairy in apical part only; ovules 6-14. Fruit c. 2 cm diam., brownish to blackish, ribbed in apical part, thick-walled.
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