Tree, up to 22 m high, dbh up to 40 cm. Branchlets terete, 1-1.5 cm in diam., greyish or silvery brown, when young sparsely yellowish brown tomentose to glabrous. Leaves 4-10-jugate; petiole terete to slightly flattened above, swollen at base, 7-25 cm, light yellowish green; petiolules grooved above, swollen, 4-15 mm. Leaflets subopposite to alternate, elliptic to ovate or oblong to lanceolate, widest at or below the middle, not or slightly falcate, 10-28 by 3-10 cm, index 2-3.5, thin-to stiff-chartaceous, shining bright green above, dull green beneath, glandular-pitted warts rather numerous on both sides or scattered on lower surface only; base equal-sided to oblique, acute to rounded and attenuate, or subcordate; apex acute to tapering acuminate; nerves c. 15 per side, 1.5-3 cm apart, angle to midrib 60-85° spreading, slightly to more curved, looped and joined at some distance from the margin or not, some intercalary veins sometimes as strongly developed as the nerves. Inflorescences 20-70 cm long, minutely brown tomen-tose; branches up to 40 cm long, patent to oblique erect; cymes condensed, several-flowered, stalks c. 5 mm long; bracts narrowly triangular, c. 3 mm long; pedicels c. 1 mm. Sepals ovate to obovate to suborbicular, 3-4.5 by 2-4.5 mm. Petals 4-7 mm long, claw 0.75-2.5 mm long, blade elliptic to sub-orbicular, 2.3-5 mm long, outside claw and base of blade glabrous or sericeous, claw (and basal 1/5 of the blade) densely long-ciliate, inside glabrous or claw sparsely hairy; scale short and broad, entire, bilobed, or 3-dentate, densely bearded. Stamens: filaments 2-3 mm; anthers ovate, 1-1.5 mm. Fruits not or 3-lobed, often only 1 part developed, but sterile cells not visible, 1.8-2.5 by 1.8-3.5 cm, outside densely shortly brown velvety, corrugated. Seeds globular-obovoid, 15 by 8-10 mm, hilum basal, small, circular.
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