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Leaves mostly 3-foliolate, upper ones often 1-foliolate; leaflets 4–25 × 1–5(7) mm, mostly linear-oblanceolate, oblanceolate or oblong-oblanceolate, lower ones sometimes oblong-obovate, rounded to retuse at the apex, appressed pubescent beneath, occasionally also above; petiole 2–12 mm long; stipules 0.
Standard elliptic to oblong-obovate, yellow marked purplish-brown, medially and apically pubescent outside; wings markedly shorter than the keel; keel 7–9.5 mm long, angular, with a long narrow beak incurved at the tip.
Calyx 3.5–5 mm long, appressed pubescent; lobes narrowly triangular, 2–3 times as long as the tube.
Erect branching annual (0.1)0.3–1 m tall; stem densely appressed pubescent.
Seeds 1.5–2 mm long, oblique-cordiform, smooth, with a prominent aril.
Pod sessile, 4.5–5 × 3.5–4 mm, ovoid-globose, pubescent, 2-seeded.
