Tree to 13 m; bole to 20 cm diam. Leafy twigs c. 6 mm diam., terete, long villous when young. Leaves to 125 cm long, to 11-jugate; petiole 5–15 cm, rachis 5 mm diam. Leaflets 13–37 by 6.5–15 cm, ovate to oblong, subglabrous adaxially or venation ± pubescent, abaxially glabrous save fine venation, bases rounded, sometimes asymmetric, apices acute to acuminate; costae 10–17 on each side; petiolules to 12 mm. Inflorescences to 80 cm long, axillary, narrowly paniculiform, 2-branched with branches to 2 cm, patent or reflexed, the flowers ± sessile. Calyx 1.5–2 mm deep, shallowly cupular, with pseudopedicel c. 1 mm long, pubescent without, margin truncate. Petals 4, c. 16 mm long, alternative, white, glabrous without except sometimes pubescent near apex. Staminal tube c. 14 mm long, glabrous or with spreading hairs near base within, margin truncate to very shallowly lobed; anthers 8 or 9, 1.5–2.5 mm long, locellate, glabrous. Disk c. 0.5 mm tall, glabrous. Ovary small (female flowers unknown); style densely pubescent in proximal half; stylehead c. 1 mm diam. Capsule c. 3.2 cm diam., 4-locular. sparsely pubescent. Seeds c. 2 cm long, ellipsoid; aril on adaxial surface.
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