Flowers axillary, in 4–10-flowered fascicles or inflorescence subcapitate or a very compact pseudoraceme; peduncle 2.2–10.5 cm long; rhachis 10–13 mm long; pedicels 1–2 mm long; bracts 2–4 mm long, lanceolate, caducous; bracts absent; bracteoles 3–4 mm long, lanceolate, usually persistent.
Calyx sparsely spreading pubescent; tube 2–3 mm long; lobes 1–2 mm long, upper pair fused along almost all of their length.
Ovary 4–5 mm long, linear-oblong, compressed, glabrous; style 5–8 mm long; stigma minute, terminal, capitate, penicillate.
Prostrate, creeping or erect herb, from a perennial woody rootstock; rootstock to 50 cm long.
Pods 2.8–4.5 cm × 4–7 mm, narrowly oblong, glabrous; margins thickened, 3–4-seeded.
Standard deep blue or purple, 8–10 × 8–13 mm, almost round; wings and keel purple.
Seeds 3–5 × 3 × 2 mm, ovoid; aril yellow, 2 mm long; hilum 2–3 mm long, linear.
Stems annual, slightly angled, sparsely spreading pubescent or glabrous.