Leaves 3-foliolate; leaflets 1.6–5.7 × 0.8–3 cm, elliptic to oblong-elliptic, obtuse to subacute at the apex, apiculate or not, narrowed to a shortly rounded base, pubescent on the upper surface, velvety pubescent beneath; petiole 1.6–3.2 cm long; rhachis 2–3 mm long; stipules 7–9 × 2–3 mm, acute, striate; stipels 2–3 mm long.
Flowers axillary, solitary, in pairs or in 3–4-flowered fascicles; pedicels 2.5–3.5 mm long; bracts 2–3 × 1 mm, lanceolate, striate; bracteoles 3–4 mm long, lanceolate.
Standard greenish-yellow, 10–11 × 6–8 mm, obovate, emarginate at the apex or not, with linear appendages 3–4 mm long; wings 8–12 × 1–2 mm; keel 10–14 × 3–5 mm.
Calyx densely golden villous; tube 2.5 mm long; lobes 3–4 mm long, linear-triangular, the upper two connate along almost all their length.
Pod golden, 4–5.5 cm × 4–5 mm, linear, compressed, glabrous or puberulous though margins always puberulous, 6–8-seeded.
Stems freely branched, some branch tips sometimes twining, young stems golden velvety, older stems glabrescent.
Erect perennial, somewhat shrubby herb up to 1 m tall, arising from a taproot.
Seeds reddish-brown, 3–4 × 2 × 1 mm, smooth; hilum small, central.
Ovary 6–8 mm long, linear, tomentose, 6–8-ovuled.