Shrub or subshrub, annual or perennial, erect, to 1.5 m tall, pubescent with appressed hairs except for the inner floral parts. Leaves 10-20 cm long including a terete petiole 15-20 mm long; stipules ovate, aristate, persistent; leaflets in 6-12 pairs spaced 10-15 mm apart, lanceolate, 15-30 mm long, 8-12 mm wide, sometimes slightly increasing distally, acute to aristate; glands between most leaflet pairs, small. Inflorescence dense, of 20-30 flowers, terminal and in upper axils; peduncle 25-60 mm long; pedicels c. 5 mm long; bracts acuminate, green, caducous. Petals c. 7 mm long. Fertile stamens 7, with 3 adaxial staminodes; filaments subequal, c. 1 mm long; anthers subequal, the largest two c. 3 mm long, the others c. 2 mm long. Pod flat, 2.5-4 cm long, 10-15 mm wide, straight, entire. Seeds dull.
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