Perennial, herbaceous shrub up to 1.5 m tall. Leaves up to 10 cm long ; leaflets up to 6 pairs, obovate to obovate-oblong, 2.5 cm x 11 mm, symmetrically or asymmetrically cuneate at the base, obtuse but mucronate at the tip. Racemes many-flowered. Flowers medium-sized. Sepals yellow, up to 12 mm long. Petals usually yellow with darker veins, up to 1.75 cm long, obovate. Two or 3 lower stamens longest, 5 medium sized, 2 upper much shorter. Pods up to 5 cm x 18 mm, compressed flat, oblong, curved, with a longitudinal flap-like crest above each seed. Seeds compressed, subquadrate to rectangular, reticulated ridged, up to 7 mm x 4 mm.