Stems 0.5-6(-12) cm, with appressed to ascending hairs 0.2-1.2 mm. Leaves (1.5-)3-8 cm; stipules 1.5-2 mm, ciliate; petiole (0.5-)1-3.5 cm, with rachis hairy like stem; leaflets in 4 or 5 pairs, narrowly elliptic, 3-8 × 1-4 mm, abaxially densely covered with subappressed to ascending hairs, adaxially sparsely to loosely covered, apex rounded to retuse. Racemes loosely to rather densely 1-3(or 4)-flowered; peduncle 0.5-6 cm, hairy like stem; bracts whitish membranous, triangular, 0.6-1.2 mm, ciliate. Calyx 4-5 mm, loosely to rather densely covered with appressed to ascending white hairs, toward teeth also with black hairs; teeth subulate, 1-2 mm. Petals violet or whitish; standard 7-9 mm, limb in middle strongly dilated, 3-4 mm wide; wings 6-7.5 mm; keel 5-7 mm. Legumes linear, erect, slightly curved, 0.7-1.5(-2) cm, 2.4-4 mm high and 2.5-3 mm wide, with a short, bent, straight beak; valves thin, straw-colored, rather densely covered with ascending hairs 0.1-0.3 mm and loosely with hairs 0.5-0.8(-1.2) mm and often inserted in small tubercles.
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