Plants up to 30 cm tall, ± subappressed hairy. Stems very sparsely covered with black hairs 0.2-0.5 mm. Leaves 5-10 cm; stipules 3-7 mm, behind stem distinctly connate to 1/2 of length, upper ones sometimes nearly free, glabrous to subglabrous; petiole 1.5-2.2 cm, like rachis sparsely white or white and black hairy; leaflets in 7-11 pairs, narrowly elliptic, 5-12 × 2-5 mm, abaxially sparsely white hairy, adaxially glabrous or very sparsely hairy, apex rounded to slightly retuse. Racemes ovoid, rather densely 13-15-flowered; peduncle 7-14 cm, loosely hairy like stem; bracts 3-4 mm, white and black ciliate. Calyx 5-6 mm, densely black hairy; teeth 2.5-3 mm. Petals blue; standard elliptic, 10-11 × 5-5.5 mm; wings 8.5-9 mm; keel 8-8.5 mm. Ovary with a stipe ca. 2 mm, narrowly ellipsoid, sparsely white hairy to glabrous. Legumes with a stipe 3-4 mm, slightly curved, 8-9 mm, ca. 2.5 mm high and ca. 2 mm wide, shortly acuminate, incompletely 2-locular; valves loosely covered with subappressed black hairs 0.1-0.3 mm.
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