Shrubs, 50-80 cm tall. Stems much branched at base; old branches fulvous, with peeling bark; young branches green, sparsely pubescent, slender, slightly angulate. Leaves squamiform, lanceolate, 1-2.5 mm. Flowers solitary, axillary, forming long racemes (10-15 cm) on branches; pedicel 1-1.5 mm. Calyx tube ca. 2 mm; teeth triangular, appressed pubescent. Corolla purple; standard broadly reniform, ca. 4 × 7 mm; wings oblong, claw ca. 1/2 as long as limb; keel shorter than wings, argute at apex, claw slightly shorter than limb. Legume slightly turgid, ovate or oval, 6-13 × 5-8 mm, appressed pubescent, with acute beak, segments membranous. Seed 1(-3), reniform. Fl. May-Jun, fr. Jun-Jul.
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