Shrub, erect or straggling, to 1.5 m high, glabrous but with the inflorescence axes, sepals and sometimes the ovary hispid. Leaves to 30 cm long including a terete petiole 8–10 cm long; stipules cordate, subpersistent; leaflets in 4–6 pairs spaced 25–45 mm apart, broadly oblong to orbicular, 50–80 mm long, 30–50 mm wide, slightly increasing distally, emarginate; glands absent. Inflorescence dense, of 20–60 flowers, axillary; peduncle 100–150 mm long; pedicels 12–15 mm long; bracts caducous. Petals unequal, 10–17 mm long. Fertile stamens 7, with 3 adaxial staminodes; filaments subequal, 1–2 mm long; anthers unequal, the largest two 8–10 mm long, the others 3–4 mm long. Pod flat, 8-10 cm long, 3–4 cm wide, straight, entire. Seeds dull, with a small areole.
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