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Leaves 3-foliolate, occasionally lower leaves 1-foliolate; leaflets 2.4–10 × 0.5–2.5 cm, oblanceolate, elliptic to narrowly elliptic, rarely linear, slightly discolorous, rounded or subacute at the apex, apiculate, cuneate at the base, sparsely hairy to glabrescent on both surfaces; petiole 6–25 mm long; rhachis 2–4 mm long; petiolules 2 mm long; stipules 7–15 × 3–5 mm, oblong-lanceolate, striate; stipels 4–5 mm long, narrowly lanceolate.
Calyx tube 2–3 mm long, glabrescent or sparsely pilose, striate; lobes 4–9 mm long, sparsely pilose, the upper pair fused for up to three-quarters of their length.
Standard 12–20 × 8–13 mm, broadly elliptic, emarginate at the apex, pale green to yellow flushed with pink; wings 17–21 × 3–4 mm; keel 13–17 × 3–5 mm.
Flowers axillary, in 3–4-flowered fascicles; peduncles 2–5 mm long; pedicels 4–10 mm long; bracts 3–5 mm long, linear; bracteoles 3–4 mm long, linear.
Pods 4.5–6 cm × 5.5–6.5 mm, linear, compressed, densely appressed pilose, beaked, 9–10-seeded.
Erect herb up to 30 cm tall, from a perennial woody tuberous rootstock.
Seeds brown speckled black, 2–3 × 2–3 × 1–2 mm, squarish.
Ovary 9 mm long densely white sericeous.
All axes white spreading pubescent.
