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Corolla 5–8 mm long, pink or purplish, glabrous; standard 5–8 × c. 6 mm, elliptic, emarginate at the apex, tapering at the base into a 1 mm long claw; wings 5–7 mm long, the blades c. 2 mm wide, oblong-falcate, auriculate at the base, the claws c. 2 mm long; keel petals 5–8 mm long, the blades c. 3 mm wide, obovate, rounded at the apex, auriculate at the base, the claws c. 2 mm long, linear.
Decumbent, perennial herb, with trailing stems up to 0.4 m long, from a long, woody taproot. Leaves pinnately 9-17-foliolate, leaflets linear-oblong, with white hairs on undersurface. Flowers 3-6, on inflorescence shorter than leaves, pink or purplish. Pod falcate to ± straight, shortly stalked and narrowed at base, papery.
Racemes 3–6-flowered; peduncle (7)20–25 mm long; bracts 1–1.5 mm long, persistent; pedicels 2–3 mm long; bracteoles minute, linear, at the base of the calyx or often absent.
Pod c. 40 × 8 mm, falcate, membranaceous, shortly stipitate, narrowed at the base, with a short beak at the apex terminated by the upcurved style, sparsely setulose.
Filament sheath up to 5 mm long; free parts of the filaments c. 2 mm long; free stamen 5 mm long; anthers c. 0.2 mm long.
Stems 20–40 cm long, prostrate, covered by sparse small white appressed or ascending swollen simple hairs.
Ovary shortly stipitate, 4–5 mm long, oblong, pluri-ovulate; style 2 mm long, persistent in fruit.
Seeds 9–15 in each pod, 3 × 1.5 mm, broadly reniform, yellowish-brown, with a long funicle.
Calyx c. 3 mm long, campanulate, divided to near the middle into 5 subequal teeth.
Perennial herb with a long woody taproot.
