Plants white hairy. Stems slender, 40-50 cm, prostrate to ascending, 1-1.5 mm thick, glabrescent in lower part, sparsely hairy in upper part. Leaves 2-4 cm, subsessile; stipules 2-3 mm, lower ones shortly connate behind stem, upper ones free, narrowly triangular, glabrescent; rachis sparsely to loosely hairy; leaflets in 8-10 pairs, narrowly elliptic, 5-9 × 3-4 mm, abaxially sparsely appressed hairy, adaxially glabrous, apex acute or shortly mucronulate. Racemes 3-5 cm, (1-)4-9-flowered; peduncle 2-4 cm, hairy; bracts ca. 2 mm, subulate, hairy. Bracteoles present, 0.5-1 mm. Calyx 4-4.5 mm, appressed black hairy; teeth ca. 2 mm. Petals purple; standard elliptic, 12-13 × 5.5-6.5 mm, apex emarginate; wings 10-11 mm; keel 12-14 mm. Legumes with a stipe 4-5 mm, narrowly ellipsoid, 15-18 mm, 1-locular; valves appressed white hairy.
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