Shrub, erect, to 2.5 m high, glabrous. Leaves 10–12 cm long including a terete petiole 25–50 mm long; stipules acicular, caducous; leaflets in 5–7 pairs spaced 15–20 mm apart, broadly elliptic to ovate, 25–50 mm long, 15–25 mm wide, acute and sometimes shortly acuminate; gland 1, 5–8 mm above the base of the petiole, sessile, broader than tall. Inflorescence subumbellate, of 3–8 flowers, terminal and in upper axils; peduncle 20–40 mm long; pedicels 10–20 mm long; bracts caducous. Petals to 12 mm long. Fertile stamens 6, with 3 adaxial and 1 abaxial staminodes; fertile filaments 2–4 mm long; fertile anthers 3–4 mm long, unequal, with incurved beaks. Pod cylindric, 7.5–9.5 cm long, 8–11 mm diam., curved, entire. Seeds dull.
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