Shrubs, 1-2 m tall. Young branches sparsely shortly appressed hairy. Leaves dimorphic; lower leaves petiolate, with obovate leaflets and distinct rachis, petioles 0.5-1.2 cm, sparsely appressed shortly hairy, rachis 4-8 mm; upper leaves subsessile, with deltoid leaflets and a minute rachis, rachis 0.5-4 mm; terminal leaflets 2-3.5 × 1.2-2.8 cm on lower leaves, 1.5-3 × 1.8-3 cm on upper leaves, abaxially with sparse appressed short hairs, adaxially glabrous or sparsely shortly hairy, obtuse at base and obtuse and mucronulate at apex on lower leaves, cordate or truncate at base and acuminate at apex on upper leaves; stipels absent. Racemes 2-5 cm, often paniculate. Pedicels 5-9 mm, shortly appressed hairy and also with sparse glandular hairs. Calyx with dense appressed short hairs, rarely also with glandular hairs; tube 2-2.5 mm; lobes narrowly triangular, 2-3 mm. Corolla purple; standard elliptic, 12-14 mm, apex obtuse; wings 12-13 mm, clawed at base; keel incurved, 16-18 mm, clawed at base. Ovary ca. 3 mm; style incurved, ca. 11.5 mm. Legume obliquely elliptic, 9-10 × ca. 5 mm, shortly appressed hairy, apex obtuse. Seeds brown, reniform, ca. 2.5 × 3.6 mm. Fl. Nov-Dec, fr. Jan-May.
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