Perennial shrub, semidecumbent or upright, up to 3 m high. Branches slightly ridged. Leaves imparipinnate, greyish green; leaflets ± 18 x 5 mm. Flowers: in a short 2-7-flowered raceme; calyx campanulate; corolla 28-52 mm long, bright red; Sep., Oct. Pods when mature < 2.5 x as long as broad, membranous, inflated, upper suture either concave or convex.