Herbs perennial, to 100 cm tall. Stem erect, strong, puberulent. Leaves paripinnate; stipules semihastate, bifid; leaflets 6-13-paired, linear or linear-lanceolate, 10-30 × 2-6 mm, subleathery, abaxially white hairy, adaxially glabrous, margin entire, apex obtuse, mucronate; lateral veins sparse; tendril 2-or 3-branched. Raceme 15-30 cm, 20-30-flowered, densely hairy. Calyx shortly campanulate. Corolla purple, rarely white, 12-18 mm; standard violin-shaped, ca. 14 × 4 mm, equaling wings and longer than keel, limb (distal part) of standard longer than claw (proximal part). Ovary linear; ovules 5-9. Legume oblong-lanceolate, 18-30 × 3-7 mm, both ends acuminate. Seeds 4-7. Fl and fr. Jun-Sep. 2n = 12, 14, 24.
Mediterranean forest, grasslands and slopes, usually on sandstone and light red soils with free drainage. Dry meadows, herbaceous grassy steppes, fallow fields, slopes and dry forests.
Can be grown by seedlings. Seeds needs soaking.
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