Shrubs, 1-3 m tall; bark dark brown. Stems terete, ridged, young branchlets tomentose, glabrescent. Stipules broadly ovate, 5-15 mm, tomentose; petiole 1-2 cm, furrowed adaxially; leaflets ovate-elliptic or lanceolate to obovate-lanceolate, 2.5-8 × 1-3 cm, rusty and gray mixed tomentose-sericeous abaxially, densely white silky at first adaxially, indumentum thinning with age but never completely absent, base cuneate, apex acute or obtuse. Racemes terminal, elongated, 5-15 cm; internodes 1.5-2 cm, usually 3-whorled; bracts broadly ovate, 1-1.5 cm, acute; pedicels ca. 1.5 cm. Calyx 1-1.2 cm, rusty tomentose. Corolla lemon-yellow, 1.8-2.2 cm; standard orbicular or broadly cordate, with ca. 6 mm claw; wings short; keel slightly shorter than standard. Ovary densely rusty tomentose, with ca. 5 mm stipe; ovules 4-8. Legume linear, 45-90 × 9-10 mm, compressed, rusty tomentose, apex acute. Seeds 2-6, brown, reniform, 5-6 × 4-5 mm. Fl. Apr-Jul, fr. Aug-Sep.
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