Perennial herbs, 20-40 cm. Stems erect, terete, branching from base, leafy. Leaves 3-foliolate; stipules of lower part triangular-lanceolate, 3-5 mm; leaflets obovate, (5-)7-12 × (4-)6-8 mm, base broadly cuneate, margin serrulate. Flowers (5-)8-10, in subumbellate heads; peduncle slender, 20-35 mm, straight after flowering; pedicels 1-2.5 mm. Calyx 3-4 mm; teeth triangular. Corolla yellow, 10-12 mm; standard suborbicular, equal to keel; wings short and narrow. Ovary linear; ovules 10. Legume oblong, (10-)12-15(-18) × ca. 4 mm, veins prominent, oblique, base stipitate, apex rounded. Seeds 2-4, brown, reniform to ovoid, 2.5-3 mm, smooth. Fl. Jun-Aug, fr. Aug-Sep.
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