Perennial, erect or trailing herbs or undershrubs, clothed with few scattered, radiating hairs, mostly branching at base with slender, procumbent branches; leaves broadly ovate or orbicular, cordate, acute, serrate, slightly hairy; petiole shorter than the blade; flowers axillary, solitary or in loose racemes; pedicels slender, jointed in the middle; epicalyx absent; calyx campanulate, 5 angled, segments triangular, acute, glabrous inside, hairy outside; petals yellow, free, scarcely exceeding the calyx, obovate, ciliate at base; stamens numerous, staminal tube dividing at the summit into numerous anther bearing filaments; anthers monothecous; carpels-5, muticous or shortly bicuspidate, sometimes shortly awned; mericarps 5, tetrahedral, sometimes awned, smooth, shortly mucronate or bicuspidate; seed solitary, pendulous, ovoid, glabrous, grey.