Herbs, 12-20 cm tall, acaulescent, from a multiheaded caudex, tuft-forming, clothed with many persistent stipules and leaves. Stipules with a lanceolate free part, (10-)12-15 × 3-5 mm, membranous, glandular and glabrous or strigose, adnate to petiole base, connate-sheathing, margin densely white ciliate with stout trichomes, apex acuminate. Leaves (4-)5-12.5(-18) cm; petiole 1-4.5 cm; petiole and rachis firm, sparingly and finely spreading villous and tubercular-glandular; leaflets verticillate, in 12-28 whorls, 4-6 blades per whorl; leaflet blades oblong-ovate to ovate, 2-5(-7) × 0.8-1.5 mm, slightly thickened, glabrous or with sparse short trichomes. Racemes subcapitate to elongate, (6-)8-20-flowered; peduncle 7-13 cm, shorter than to ± equaling leaves, with spreading trichomes and glands; bracts ovate-lanceolate to lanceolate-oblong, (5-)6-8 × 1-2 mm, herbaceous, with spreading white and black trichomes and glands, apex acute. Calyx cylindric, 10-13 × ca. 3 mm, slightly inflated, with appressed black and white trichomes and glands; lobes lanceolate, 2-4 × ca. 0.5 mm. Corolla violet to purple; standard 1.9-2.5 cm, lamina suborbicular to obliquely spatulate, apex rounded; wings 1.8-2.1 cm, lamina obliquely triangular-spatulate, apex emarginate; keel 1.7-2 cm, beak 2-3.3 mm. Legume subsessile; body bladderlike inflated, 1.6-2 cm, membranous, whitish and blackish villous and glandular, beak 2-3 mm. Fl. Jun-Aug, fr. Jun-Aug.
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