Erect, ascending or procumbent shrub to 2.5 m tall; stems numerous, glabrescent, 5-angled. Leaves trifoliolate and shortly petiolate on lower stems, 1-foliolate and subsessile higher up, or absent; leaflets narrow-elliptic to obovate, 5–20 mm long, 1.5–8 mm wide, sessile, pubescent, apex acute or obtuse; stipules inconspicuous. Flowers 1 or 2 per leaf-axil, arranged in long terminal raceme; pedicels slender, 5–12 mm long; calyx c. 6 mm long, glabrous, lower lip longer than upper; corolla mostly 16–20 mm long, golden-yellow, sometimes with reddish-brown markings; standard broad, notched. Pod linear-oblong, 25–60 mm long, 8–10 mm wide, ciliate; seeds mostly 6–18, more or less elliptic, c. 3 mm long, compressed, green-yellow; aril yellow. Flowers mainly Sep.–Dec.