Herbs, perennial. Roots and rhizomes slender. Stem 30-60 cm tall, densely yellow scaly glandular punctate, glabrous or sparsely pubescent. Leaves 5-15 cm, 9-13-foliolate; stipules lanceolate, 2-3 mm, sparsely white pubescent, glandular punctate; petiole densely scaly glandular punctate, sparsely pubescent; leaflets narrowly elliptic to oblong-obovate, densely scaly glandular punctate, base cuneate, margin serrulate, apex usually retuse. Racemes much flowered; rachis longer than leaves, densely scaly glandular punctate, sparsely pubescent; bracts lanceolate, membranous, glandular punctate, pubescent. Calyx campanulate, 2.5-3.5 mm, densely scaly glandular punctate, sparsely pubescent, 5-toothed; upper 2 teeth slightly joined. Corolla white, abaxially densely yellow glandular punctate; standard ovate-oblong, 5-7 × 2.5-3.5 mm; wings 4-5 mm; keel straight, slightly shorter than wings. Legume brown, orbicular or broadly reniform, 5-10 × 4-7 mm, tuberculate, apex mucronate. Seeds 2, green, ca. 2 mm. Fl. May-Jul, fr. Jun-Sep.
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