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Large shrub or small tree, 2-6 m tall; young parts strigulose later glabrous. Stipules linear falcate, 6-15 mm long. Leaves with 4-6 pairs of leaflets; petiole 3-5.6 cm; rachis 5-15 cm with a clavate gland, 1-2 mm long, between the 2 or 3 (or 4) lower pairs of leaflets. Leaflets with short petiolule, broadly elliptic-lanceolate, 5-10 by 2-4 cm, with acute apex; upper surface glabrous, lower sparsely pubescent. Inflorescences lateral racemes with peduncles 3-10 cm, axis 1-6 cm; bracts ovate acute, 3-8 mm long, finally reflexed; pedicels 1-3 cm. Sepals green to reddish brown, 2 outer suborbicular c. 3 mm, the 3 inner obovate, increasing to 6-9 mm in length. Petals bright yellow (drying orange or pinkish brown), ovate-obovate, 1.5-2 cm long, with a narrow claw 1-1.5 cm long. Stamens 10 fertile with thick, short filaments, 1-4 mm; anthers subequal 5-7 mm long, opening apically by short slits. Ovary strigulose; style glabrous, filiform; stigma inconspicuous. Pods flat, glossy, 12-17 by 1.5-1.8 cm with papery valves. Seeds 20-30, oblong-elliptic, c. 7 by 4 mm.
A shrub or small tree. Young shoots are hairy. The leaves are 15-30 cm long. There are 4-6 pairs of leaflets along the stalk. These are 4-10 cm long by 3-4 cm wide. Flowers are in groups in the axils of leaves. The petals are bright yellow. The pods are shiny and flat. They are 12-20 cm long by 1-2 cm wide. They have a long slender beak at the end. There are 20-30 seeds. They are 7 mm long by 4 mm wide.
