Herbs, 6-8 cm tall, acaulescent, from a branching superficial caudex, almost glabrous. Stipules triangular, membranous, with dense long trichomes, adnate to petiole, apex retuse. Leaves 1-2 cm or 7-10 cm, 9-13-foliolate; leaflet blades linear, 0.4-1 cm or 1.3-3.5 cm, 1-2 mm wide, adaxially glabrous, base rounded, margin involute, apex acute. Racemes compact to rather lax, 2-5-flowered; peduncle slightly shorter than to as long as leaves, thin, with spreading sparse trichomes; bracts lanceolate to ovate-oblong, with dense long trichomes. Calyx tubular, 8-11 mm, membranous, with dense white long trichomes; lobes subulate, ca. 1/3 as long as tube. Corolla purple; standard 1.8-2.3 cm, lamina suborbicular, apex rounded to emarginate; wings 1.9-2 cm, apex rounded; keel 1.5-1.7 cm, beak ca. 1.5 mm. Legume sessile, ovoid, 1.4-1.8 × 1.2-1.5 cm, inflated, membranous, 1-locular, with white and black short trichomes, septum narrow, adaxially deeply grooved, beak 7-10 mm. Fl. May-Jun, fr. Jun-Jul.
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