Erect herbs or shrubs, to 3 m tall. Leaves 20-30 cm long, leaflets 30-50-70 or more, narrowly elliptic to narrowly oblong, rounded at both ends, mucronate apically, to 30 mm long, to 5 mm wide; petiolules to 1 mm; petioles more than 1 cm long, petiole base slightly sheathing and the stems often noticeably 3-lined from the nodes. Inflorescence of 2-6 flowered axillary racemes, pedicels rela-tively stout, over 2 mm wide. Flowers 1.8-2.5(-3.0) cm long when pressed, the standard not reflexed; hypanthium broad campanulate, 7-10 mm long, 6-7 mm wide when pressed, the teeth 3-4 mm long, triangular, acuminate; petals yellow, standard ovate, 3 cm long, 1.8 cm wide; wings oblong to obovate, to 2.5 cm long, the claw to 0.5 cm long; keel petals obovate, to 2.5 cm long, the claw to 0.5 cm long, upcurved; staminal sheath to 15 mm long. Fruit long and narrow, to 25 cm long, 4-6 mm wide, beaked, stipitate, dull, brown, the flat surface slightly in-dented between the seeds, the margins thickened and also slightly indented be-tween the seeds; fruiting pedicels to 2 mm thick; seeds numerous, oblong, 4-5 mm long.
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