Plants up to 28 cm tall; hairs appressed to subappressed, in vegetative parts only white, in inflorescence also black. Stems loosely covered with hairs up to 0.3 mm. Leaves 4-8 cm, subsessile; stipules 3-4 mm, behind stem distinctly vaginate-connate, often reflexed, white ciliate; rachis loosely hairy; leaflets in 8-14 pairs, elliptic, 4-8 × 2-4 mm, abaxially somewhat densely and adaxially sparsely to loosely covered with hairs up to 1 mm, apex rounded to retuse. Racemes ovoid, many flowered; peduncle 4-7 cm, loosely white, toward raceme also black hairy; bracts ca. 2 mm, white ciliate. Calyx 4-5 mm, covered with a few appressed white hairs up to 0.5 mm and loosely to rather densely covered with much shorter, subappressed to slightly ascending, black hairs; teeth 1.5-2.5 mm. Petals violet; standard obovate, 10-11 × 5-5.5 mm; wings 9-10 mm; keel 7.5-8 mm. Ovary with a slender stipe 1-1.5 mm, densely white hairy. Legumes with a stipe 1-2 mm, oblong, distinctly curved, 7-8 mm, 2-3 mm high and wide, with a very short beak, 1-locular; valves rather densely covered with appressed black hairs 0.4-0.5 mm with some white hairs mixed in.
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