Herbs, (6-)10-21 cm tall, caulescent, from a multiheaded caudex with many branches, tufted, clothed with persistent petioles and stipules. Stipules ovate to lanceolate, membranous, with appressed white trichomes, adnate to petiole. Leaves (2-)5-17(-19) cm, (19 or)21-37-foliolate; petiole and rachis with appressed sparse white trichomes; leaflet blades lanceolate-ovate to lanceolate, (4-)7-18 × (1-)2-4 mm, white sericeous when young but sparsely so later. Racemes 5-to many flowered; peduncle 4-15(-21) cm, as long as to longer than leaves, thick, erect, sulcate, with spreading trichomes; bracts lanceolate to subulate, 1.2-1.5 cm, with white long trichomes. Calyx broadly cylindric, 1-1.2 cm, with spreading white and appressed black trichomes; lobes linear-lanceolate, 3-5 mm. Corolla pale purple; standard (1.6-)1.7-2(-2.2) cm, lamina broadly ovate, apex 2-lobed; wings 1.5-1.7 cm, apex emarginate; keel 1.2-1.3 cm, beak ca. 1 mm. Legume sessile, oblong-ovoid, 1.5-3 × 0.5-0.7 cm, thinly leathery, 2-locular, with sparse white and appressed black trichomes, septum wide, apex beaked. Fl. and fr. Jul-Aug.
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