Herbaceous perennial, erect, to 1.5 m high, glabrous but with the ovary and sometimes the vegetative parts pubescent. Leaves 10–12 cm long including a terete petiole 15–35 mm long; stipules acicular, caducous; leaflets in 4–7 pairs spaced 10–20 mm apart, lanceolate to elliptic, 40–70 mm long, 10–20 mm wide, increasing distally, acute and acuminate; gland 1, near the base of the petiole, sessile, taller than broad. Inflorescence subumbellate, of 4–20 flowers, in upper axils, sometimes forming a loose, many-flowered panicle; peduncle 20–40 mm long; pedicels 12–15 mm long; bracts caducous. Petals to 10 mm long. Fertile stamens 6, with 3 adaxial and 1 abaxial staminodes; fertile filaments 2–4 mm long; fertile anthers 3–4 mm long but slightly unequal, with incurved beaks. Pod cylindric, 4–5 cm long, c. 5 mm diam., curved, entire. Seeds dull.
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