Shrubs, 1-2 m tall. Young branches ± densely ascending hairy. Leaves dimorphic; lower leaves petiolate, with obovate leaflets, petioles 1-2 cm, ± densely shortly ascending hairy; upper leaves sometimes subsessile, with orbicular or transversely elliptic leaflets; terminal leaflet 1.5-3.5 × 1.3-3 cm, abaxially appressed hairy, adaxially with sparse appressed minute hairs, base cuneate to broadly cuneate, apex obtuse and mucronulate or acuminate; stipels absent. Racemes 2-3 cm, often paniculate at apex; panicle zigzag, bent at nodes; rachis and pedicels ± densely ascending hairy, rarely also with glandular hairs. Pedicels 10-14 mm. Calyx with dense ascending short hairs, rarely with glandular hairs; tube 2-2.5 mm; lobes narrowly triangular, 2-3 mm. Corolla purple; standard elliptic, 12.5-13 mm, apex obtuse; wings 12-13 mm, clawed at base; keel incurved, 15-16 mm, clawed at base. Ovary ca. 3 mm; style incurved at base, ca. 10 mm. Legume obliquely elliptic, 12-15 × 5-6 mm, shortly ascending hairy, apex acute. Seeds purplish black, reniform, ca. 3 × 6 mm.
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