Plants up to 40 cm tall, covered with appressed, mostly ± medifixed, in vegetative parts only white hairs up to 1 mm. Stems several to numerous, very sparsely to loosely hairy. Leaves 3-6 cm; stipules 5-7 mm, very shortly adnate to petiole, high vaginate-connate behind stem, glabrous or ciliate; petiole 0.5-1 cm, like rachis loosely hairy; leaflets in 5-8 pairs, ± narrowly elliptic, 5-10(-15) × 1.5-4(-6) mm, abaxially sparsely to loosely hairy, adaxially glabrous or with few hairs, apex obtuse to emarginate. Racemes rather densely 6-15-flowered; peduncle 6-10 cm, sparsely white hairy; bracts 2-4 mm, sparsely ciliate with subbasifixed to basifixed white and black hairs. Calyx 5-6 mm, sparsely to loosely covered with strongly asymmetrically to nearly symmetrically bifurcate black hairs 0.3-1 mm and with mostly fewer and slightly longer, strongly asymmetrically bifurcate white hairs up to 1.2 mm; teeth 1-2 mm. Petals purple; standard obovate, ca. 14 × 5-6 mm, apex emarginate; wings 12-13 mm; keel ca. 10 mm. Legumes sessile, erect, linear, straight or very slightly curved, 25-30 mm, ca. 2 mm high and wide, with a straight beak 1-2 mm, 2-locular; valves sparsely covered with appressed white hairs 0.5-1.2 mm.
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