Tree 8 m tall. Leaves 3-or 4-jugate, shortly petioled (1-1.5 cm), petiole and rachis 7-24.5 cm long. Leaflets subcoriaceous, elliptic-oblong to oblong-lanceolate, rarely ovate, 12-28 by 5-13.5 cm; apex acute; base cuneate, obtuse, or rounded, symmetric, or sometimes unsymmetric; glabrous; midrib elevated above, prominent beneath; nerves 6-10 per side; petiolules 4-10 mm. Inflorescences 5-14 cm wide, slightly pubescent, glabrescent, or glabrous; branches up to c. 16 cm long; bracts and bracteoles caducous, more or less equal in shape and size, ovate, 1-2 mm long, puberulous outside, minutely hairy on the margin; pedicels 12-22 mm, the length of pedicel between bracteoles and flower 8-18 mm. Flowers orange red or red, fragrant, obscurely articulated near the base, slightly puberulous or subglabrous outside. Hypanthium 10-15(-20) mm long, 0.5-2 mm wide at the throat, gradually tapering towards the base. Calyx lobes elliptic, or ovate-elliptic, 5-10 by 2-8 mm, with minutely hairy margin. Stamens 4(-6); staminodes 0-2, when present c. 1 mm; filaments 10-27 mm, glabrous; anthers ellipsoid or oblong, c. 2 mm long; free parts of staminodes (0.5-) 1-5 mm. Pistil (sometimes reduced) glabrous, stipitate, free part of stipe up to 5 mm; ovary 4-5 mm long, 6-ovuled; style 10-16 mm; stigma minute, round. Pods brown, oblong or oblong-lanceolate, 15-18 by 5-6 cm, up to 1.6 cm thick, 1.5-2 cm beaked, obliquely cuneate at base; dried valves somewhat coiled, woody, with distinct, straight and loosely reticulate veins on the outer surface. Seeds (only one seen) suborbicular, slightly depressed at the hilum side, c. 3.7 by 3.1 by 1.2 cm, glossy dark brown.
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