Prostrate creeping, hispid, annual herb; stem angular, grooved or terete, scabrous; tendrils simple; leaves 3-7 lobed, lobes shallow, obtuse, suborbicular, hirsute on both sides, margines denticulate, base cordate; flowers yellow, monoecious, shortly peduncled; male flowers fascicled; calyx tube narrow, turbinate, lobes-5, subulate, erect or spreading, villous; corolla subcampanulate, yellow, deeply 5-lobed, limbs ovate-oblong acute; stamens-3, free. filaments very short, anthers free, 1-anther 1-celled, others 2-celled; connective produced above or appendiculate, appendage shorter than the anthers, pistillode glanduliform; female flower axillary, solitary; staminodes absent; ovary ovoid or globose, 3-5 placentiferous, ovules numerous, style short, stigma 3-fid, obtuse; fruits ellipsoid, oblong or obovoid, tuberculate or smooth, not spinous, greenish-yellow; seeds oblong, beaked, white, smooth.