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Leaves 3-foliolate; leaflets mostly 15–45 × 3–15 mm, variable in shape, linear-lanceolate to lanceolate or oblanceolate to elliptic or obovate-elliptic, sparsely appressed puberulous beneath; petiole shorter (sometimes only slightly) than the leaflets; stipules 1–1.5 mm long, subulate, deciduous.
Standard obovate-circular, yellow, veined brown or purplish; wings exceeding the keel; keel 6–7 mm long, abruptly rounded near the middle, with a narrow attenuate beak incurved at the tip.
Pod shortly stipitate, (0.8)1.2–1.5 × 0.35–0.4 cm, narrowly subcylindrical, pointed at either end, puberulous, (6)10–16-seeded.
Calyx c. 4 mm long, glabrous; lobes narrowly acuminate-triangular, shorter to a little longer than the tube.
Erect widely branching annual, 10–60 cm tall; stem slender, subglabrous to sparsely puberulous above.
Seeds 1.5–2 mm long, oblique-cordiform, smooth to minutely rugulose, brownish.
