Twining or scandent annual herbs, clothed with ferrugineous deflexed brown hairs; petiole long, hairy; stipules falcate-lanceolate, hairy; leaves 3 foliolate, frequently lobed, leaflets slightly 3-lobed, middle lobe larger, laterals ovate-deltoid, acuminate at apex, subcuneate or subtruncate at base, margins ciliate, silky hairs on both surfaces, conspicuously 3 nerved; bracts ovate, acute, deciduous; bracteoles, linear, subulate, ciliate; racemes long, 2-6 flowered, peduncled, pedicel very short; flowers about 1 cm; calyx thinly hairy, lobes ovate-triangular; corolla yellow, exserted, standard orbicular, often auricled at base; wings obovate, falcate, scarcely adnate to incurved keel; stamens diadelphous (9+1), anthers uniform; ovary sessile, many ovuled; style filiform, bearded along inner face; oblique stigma; pods sub-compressed, cylindric, straight, clothed with reddish brown hairs, seed 4-10, oblong, dark brown.