Tree 3-15(20) m tall. Stems puberulent, becoming glabrous and lenticellate with age. Leaves paripinnate; petiole plus rachis (3)6.5-12(17) cm long, slightly flattened adaxially; petiolules 5-20 mm long; leaflets (2) 4 (5), alternate or less often subopposite, chartaceous, glabrous, elliptic, oblong-elliptic or less often ovate, 7-20 (32) × 3-8 (10) cm, the base obtuse, asymmetrical, the apex obtusely acuminate, obtuse or acuminate, the margins slightly crenate; primary and secondary veins abaxially prominent, tertiary veins subclathrate. Thyrses fasciculate, axillary or distal, 7.5-22(36) cm long, paniculate; axes tomentulose, slightly angled and striate. Flowers in simple dichasia; pedicels 1.5-2.5 mm long, tomentulose. Calyx yellowish green, ferruginous-tomentulose, ca. 1 mm long, the lobes triangular, 0.5-0.7 mm long; petals white, rhombate, ca. 1 mm long, sparsely tomentose; appendages 2, sericeous-tomentose, ca. 2 mm long, basal-marginal, forming a pocket with the petal; disc tomentose, 6-lobed; stamens 8, unequal, 2-2.5 mm long, the filaments tomentose for most of their length; ovary tomentulose, the style 3-branched. Capsule ferruginous-tomentulose, reddish, shortly stipitate (ca. 2 mm long), turbinate, 3-locular, 1-1.2 cm long, the locules slightly flattened laterally; pericarp coriaceous, ca. 1.5 mm thick. Seed dark brown, ellipsoid, 6-8 mm long, nearly completely covered by a white, thin arillode.
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