Leaves often with short axillary shoots bearing a cluster of smaller leaves, estipulate, 3-foliolate; leaflets 1.5–4 × 0.4–1.2 cm, very variable in shape from linear-oblanceolate to elliptic or oblong-obovate, puberulous at least beneath; petioles mostly 1.7–3.5 times as long as leaflets.
Standard elliptic-ovate, yellow, usually marked reddish or purple and glabrous outside; wings 0.75–0.9 times as long as the keel; keel 2–2.2(2.3) cm long, rounded about the middle with a rather short bluntly pointed beak.
Racemes with usually numerous laxly arranged flowers; bracts 2–3.5 mm long, subulate or linear-lanceolate; bracteoles small.
Calyx (8)9–12 mm long, puberulous; lobes narrowly triangular, sometimes acuminate, ± as long as the tube.
Pod including 0.8–1.2 cm long stipe up to 4–5.5 cm long, oblong-clavate, puberulous.
Shrub, 1–3(4) m tall, with hairy sometimes glabrescent branches.
Seeds c. 5 mm long, oblong-reniform, granulate, ochre or brown.