An erect, stiff, sparingly branched shrub up to 0.7 m tall. Branches thick, stout, knotty from old short-shoots; young branches densely puberulous-velutinous. Leaves trifoliolate, with small leaflets, and soon with axillary brachyblast (with several leaves) developed. Leaflets flat, elliptic, or ovate to (ob-)lanceolate, small, usually 0.5-4 x 0.3-2 mm, weak, acute, densely silvery sericeous. Inflorescence a head or cluster of (2-)4-8 flowers(or flowers rarely solitary), on the tips of branches or(often short) lateral branchlets. Bract oblanceolate-obovate, 2-4 x 1-1.5 mm, sericeous. Pedicel ±0.5 mm long, sericeous. Bracteoles oblanceolate, 2-4 x 0.5 mm, sericeous. Calyx campanulate, densely silky sericeous; lobes triangular, only 2-3 mm long, acute, often dark pigmented, sericeous. Petals light lemon-yellow. Standard blade circular or broadly ovate, 8-9.5 x 9-13 mm, densely sericeous on the back, the sides often ± recurved. Wing blades obliquely ovate or lunate, 8-9.5 x 4.5-7 mm, sericeous to tomentose on most parts, with a main longitudinal fold and basally with some rows of minute folds. Keel blades lunate, 6.5-8 x 4-4.5 mm, sericeous to tomentose on most parts. Pistil densely white-pubescent on ovary and style base; ovules 4. Pod triangular-lanceolate, 4-4.5 x ±2.5 mm, silky pubescent, one-seeded.
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Stiff, sparsely branched shrublet with strong, knotty branches to 70 cm. Leaves 3-foliolate, leaflets ovate-oblanceolate, flat, weak, small, silvery silky. Flowers clustered in heads at branch tips, pale lemon-yellow, wings and keel silky, calyx silky, lobes triangular, often dark pigmented.