Shrubs, 1-2(-3) m tall, glabrous. Leaves 7-18(-21) cm; petiole 3-5 cm, with a subulate or narrow clavate gland 5-10 mm above petiole joint; petiolules ca. 2 mm; leaflets 4-10 pairs, lanceolate or elliptic-lanceolate, 1.7-4.2 × 0.7-2 cm, base rounded, apex acute to shortly acuminate. Corymbs axillary, few flowered; peduncles 1-2 cm; bracts ovate, ca. 5 mm; pedicels 1-1.5 cm. Sepals ovate-orbicular, ca. 5 mm. Petals yellow, obovate, shortly clawed. Stamens 10, 6 or 7 fertile, 2 longer; anthers opening by apical pores; staminodes 3 or 4, ca. 2 mm. Ovary finely pubescent. Legume straight, 5-10 × 0.5-1 cm, flattened and slightly thick at first, subcylindric, ± swollen when ripe. Seeds 30-40, ovoid, compressed. 2n = 28.
A small annual shrub. It grows about 2 m high. The larger leaves are 7-18 cm long. The leaves are compound with 8-12 pairs of leaflets. The leaflets can be 7 cm long by 2 cm wide. The leaflets taper. The flowers are yellow. They are in groups of 4-10 flowers. The pod is erect and cylinder shaped. It is 6-10 cm long by 1 cm wide.