Calyx 5–8 mm long, usually appressed pubescent; upper lobes oblong to triangular-lanceolate, rather abruptly contracted to an excentric apiculate tip, 1.5–2.5 times as long as the tube, usually with white hairs along the margins inside, becoming attenuate and glabrescent inside in mature flowers.
Standard broadly elliptic to subcircular, yellow, finely veined and ageing reddish, pubescent outside; wings oblong-obovate, ± as long as the keel; keel 9–11 mm long, angular, with a narrow twisted beak, lanate along the upper suture.
Leaves 3-foliolate; leaflets 2–6 × 0.8–2.5 cm, oblong-elliptic to elliptic, usually appressed pubescent beneath; petiole 1–3 cm long; stipules 1.5–4 mm long, linear-subulate.
Racemes (4)10–15 cm long, (8)12–24-flowered; buds ascending; bracts 1.5–3 mm long, linear-subulate to linear-lanceolate, bracteoles on the calyx, 0.5–2 mm long.
Pod subsessile, 1.6–2.4 × (0.8)1–1.4 cm, broadly oblong-ellipsoid to oblong-obovoid, appressed puberulous to glabrous, c. 16–28-seeded.
Erect annual (0.1)0.3–1.5 m tall; branches appressed pubescent, sometimes glabrescent.
Seeds 2–2.8 mm long, oblique-cordiform, smooth, yellowish to brown.