Shrubs to 1 m tall. Bark greenish brown to dark gray, shiny. Branchlets strong and long. Leaves digitate, 4-foliolate; petiole and rachis 3-5 mm on long branchlets but absent on short branchlets; leaflet blades linear to lanceolate-linear, 4-16 × 1-2 mm, falcate, glabrous. Flowers solitary. Pedicel 6-9 mm, articulate basally from middle. Calyx tube campanulate, 6-7 mm. Corolla orange, 1.8-2 cm; standard suborbicular, claw 1/4-1/3 as long as limb, apex rounded to emarginate; wings narrowly oblong, claw ca. 1/2 as long as limb, auricle ca. 3/4 to ± as long as claw; keel with claw shorter than limb, auricle short. Ovary glabrous. Legume cylindric, 2.5-4 cm, slightly compressed, glabrous. Fl. Jun-Jul, fr. Aug. 2n = 16.
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