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Leaves 2-foliolate; leaflets 10–27(40) × 1–5(10) mm, obliquely linear-elliptic, linear or lanceolate, acute at the apex, cuneate at the base, glabrescent or sparsely hairy, glandular-punctate, particularly near the margins; petiole 5–20 mm long, glabrous; petiolules c. 1 mm long; stipules 9–18 mm long including the 3–6 mm long spur, 1.5–3 mm wide, lanceolate, glabrous and obscurely pellucid-punctate.
Fruits 10–17 mm long of 4–6 articles, each article 1.5–2.5 × 1.5–2 mm, sometimes slightly glandular, puberulous or rarely glabrous, covered with plumose or glabrous bristles 0.2–0.5(1) mm or 2–3 mm long.
Inflorescences 5–25 cm long; peduncle 2–6 cm long; bracts 5–12 × 2–4(6) mm, elliptic, ovate-lanceolate or lanceolate, acute, ciliate but otherwise glabrous, fairly densely to sparsely pellucid-punctate.
A herb. It is bushy with many stems. It has a woody rootstock about 2.5 cm high. They leaves are narrow and 4 cm long. The flowers are red and pea-like.
Standard yellow or orange, marked with red or brown, or sometimes pink, 7–11 × 6–10 mm; wings yellow marked with red; keel yellow or green.
Seeds dark brown, compressed, 1.8 × 1.1 × 0.5 mm, irregularly reniform, somewhat beaked beyond the small eccentric hilum.
Calyx tube 2 mm long; lobes 0.5–1.5 mm long, glabrous save for midnerve of the lowest lobe.
Stems often many from the woody stock, branched, glabrous or somewhat pubescent.
Decumbent or, less often, erect perennial herb 5–40 cm long or tall.
