Plants 8-25 cm tall, loosely caespitose, covered with mostly medifixed hairs. Stems 4-15 cm, loosely covered with appressed white hairs 0.3-0.5 mm. Leaves 2-4 cm; stipules 2-4 mm, sparsely to loosely covered with appressed white or black or white and black hairs; petiole 0.5-1 cm, like rachis slender, rather densely white hairy; leaflets in 4-8 pairs, (1-)2-8 × 1-4 mm, both surfaces densely covered with appressed hairs. Racemes densely 5-10-flowered; peduncle 2-5(-8) cm, hairy; bracts 2-5 mm, mostly black hairy. Calyx at anthesis tubular, 8-13 mm, soon bladderlike inflated, spherical to ovoid, 10-15(-17) mm, rather densely covered with appressed to ascending, symmetrically to strongly asymmetrically bifurcate, black hairs 0.1-1 mm and with ± spreading, rarely subappressed, subbasifixed to basifixed, mostly longer, white hairs in different relations; teeth 1-2 mm. Petals violet or pink; standard obovate, 17-21 × 7-9 mm, constricted below middle, apex emarginate; wings 17-20 mm, limbs obtriangular, widest at obliquely bilobed tip; keel 14-17 mm. Legumes with a stipe 0.5-1.5 mm, included in calyx, 5-9 mm, 3-3.5 mm high, compressed laterally, with a strongly bent slender style 0.6-2 mm, incompletely 2-locular; valves densely covered with spreading, subbasifixed to basifixed, white hairs up to 1.5 mm and often also with much shorter black hairs.
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