Shrubs, much branched, 1-2 m tall. Branchlets densely gray-yellow tomentose. Petiole 2-3 mm; terminal leaflet blade ovate or elliptic, 7-16 × 5-11 cm, lateral ones 7-11 × 5-6 cm, abaxially densely white tomentose, adaxially appressed white pubescent, lateral veins 8-10 on each side of midvein, reaching margin, both surfaces distinctly reticulate veined. Flowers 5-11, enclosed by pair of leaflike bracts; bracts broadly elliptic or broadly ovate, 2-3.5 × 1.5-2.5 cm. Pedicel 5-10 mm. Calyx 2-3.5 mm. Corolla white or pale yellow; standard ca. 10 × 5 mm, clawed; wings ca. 8 × 1.5 mm, clawed; keel ca. 9 mm, base long clawed, auriculate. Ovary 2.5-3 mm; style ca. 1 cm, slender. Legume 1-2 × 0.4-0.5 cm, slightly pubescent or glabrescent, 3-or 4-jointed; articles nearly quadrangular, reticulate veined. Seed orbicular, 2.3-2.7 mm in diam. Fl. Jul-Aug, fr. Oct-Nov.
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