Shrublets, 0.7-2(-3) m tall. Stems pale yellow to brown, erect, with fibrous stripping. Stipules ovate-lanceolate, 5-6 mm, basally connate. Leaves 10-25 cm, basal ones 7-11-foliolate, apical ones 3-or 5-foliolate or sometimes none; leaflet blades linear-oblong to narrowly lanceolate, 1.5-3 × 0.3-0.6 cm, abaxially pilose, adaxially pubescent to glabrous. Racemes lax, with many flowers; bracts ovate, 1-1.5 mm; peduncle longer than leaves. Pedicel 2-3 mm. Calyx campanulate, 5-6 mm, pubescent; teeth triangular, unequal, abaxial 3 longer than adaxial 2. Corolla purple; standard obovate-orbicular, 1.5-1.9 cm; wings ca. 1/2 as long as standard; keel slightly shorter than standard. Ovary pubescent. Legume divided into 2-4 articles; articles broadly ovoid, 5-6 × 3-4 mm, inflated, densely white lanate. Fl. Jun-Sep, fr. Aug-Oct. 2n = 16*.
Can be grown by seedlings. Seeds needs soaking.
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