Prostrate, mat-forming shrublet with branches to 50 cm long. Leaves 3-foliolate, leaflets terete, slender, weak, slightly S-curved, thinly hairy, often violet. Flowers 1 or 2 on tips of branchlets, sometimes with long, peduncle-like internode, pale yellow or ± purplish, fading dark purple, wings and keel glabrous, calyx silky, lobes linear, subterete, weak, silky.