Shrubs to 80 cm tall. Bark grayish green, yellowish brown, or dark brown. Stipule spines 4-7 mm on long branchlets. Leaves digitate, 4-foliolate; petiole 4-7 mm and persistent on long branchlets, absent on short branchlets; leaflet blades linear-lanceolate to linear, 4-11 × 1-2 mm, both surfaces green to grayish green. Flowers solitary. Pedicel 5-10 mm, articulate slightly basally from middle. Calyx tube campanulate-tubular, 4-6 mm. Corolla yellow but standard orangish brown at middle; standard orbicular to broadly obovate, 0.8-1.8(-2) cm, claw broad and short; wings with claw ca. 1/2 as long as limb, auricle elliptic and 1/4-1/2 as long as claw; keel with a claw longer than limb, auricle obtuse. Ovary glabrous. Legume cylindric, 2-2.5 cm. Fl. Apr-Jun, fr. Jul-Aug. 2n = 32.
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