Trees up to 25 m high, dbh up to 40 cm. Twigs terete, finely grooved, 2-4 mm diam., densely pustular lenticellate, yellowish to greyish brown. Leaves unifoliolate or 1-or 2-jugate; petiole terete or above flattened with a narrow groove, (0.7-)l.5-3 cm by 1-2 mm; petiolules 2-3 mm long; leaf axes densely puberulous, glabrescent. Leaflets elliptic to obovate, 7-20 by 3-7 cm, index 2.5-3.5, thin-pergamentaceous, glabrous; base sometimes slightly attenuate; margin flat; apex obtuse or ± tapering into a broad rounded acumen; nerves (0.5-) 1-2.5 cm apart, strongly curved to nearly straight, only the few uppermost ones looped, above prominulous, beneath prominent; veins and vein-lets laxly reticulate, prominulous on both sides. Inflorescences up to 15 cm long, puberulous. Bracts and bracteoles ± deltoid, 0.2-0.5 by 0.2-0.5 mm, outside and inside appressed-hairy. Pedicels c. 2.5 mm long, hairy. Male flowers somewhat smaller than the female ones. Sepals deltoid, 0.7-1.1 by 0.5-1.1 mm, inside at the base also with a row of longer hairs. Petals absent or 1 or 2 reduced ones present, ± spathulate, 0.6-1.1 by 0.2-0.6 mm. Stamens 7 or 8; in male flowers: filaments 2-2.9 mm long, anthers c. 0.5 mm long; in female flowers: filaments 0.7-1 mm long, glabrous or with 1 or 2,hairs, anthers 0.4-0.5 mm long. Pistil 3-locular; style c 0.9 mm long; stigma c. 0.4 mm long; pistillode c. 0.6 by 0.7 mm. Fruits immature, 3-celled, ± glolular. Seeds with at least the lower third cov-ered by a cupular sarcotesta with a narrow, lobed, free margin.
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