Prostrate or ascending perennial herb, to c. 20 cm tall; stems pubescent with appressed or spreading asymmetrically medifixed hairs; hairs 0.5–1 mm long. Leaves mostly 2–7 cm long; leaflets 5–13, narrow-oblanceolate to narrow-elliptic, lateral leaflets 5–15 mm long, usually 1–3 mm wide, terminal leaflet usually 2–5 mm longer, apices acute, rarely obtuse or retuse, both surfaces pubescent; stipules 3–7 mm long. Racemes mostly 2–8-flowered; flowers 7–11 mm long; calyx pubescent, teeth about equal to tube; petals purplish; standard 8–14 mm long, 8–14 mm wide, broad-ovate, long-clawed; keel 7–10 mm long, apices obtuse with swellings behind tip; style tip geniculate. Pod cylindric to obovoid, mostly 10–17 mm long, 4–8 mm wide, pubescent, stipe to c. 4 mm long; seeds c. 20, cordate, c. 1.7 mm long, olive-green to brown. Flowers Aug.–Oct.