Trailing herb, branches densely clothed with brown, short, spreading hairs; leaves pinnately 3 foliolate, stipulate, long petiolate; leaflets orbicular, acute or acuminate, membranous, finely pilose on both surfaces; flowers solitary, axillary or in 2-flowered raceme; calyx pilose, teeth long, setaceous; corolla exserted, standard orbicular, wings obliquely ovate, keel not beaked, pale yellow; stamens 9+1; ovary sessile, 3 or more ovuled, style incurved, glabrous, stigma simple; pods 4-6 seeded, linear-oblong, flattened, mucronate, pubescent with transverse depressions between seeds.