Annuals; stems erect-spreading, 1.0-3.5 dm tall; basal leaf blades broadly elliptic, 1.5-2.5 cm long, glabrous and green on both surfaces except for scattered villous hairs along the margins and midvein; stem leaves similar to basal leaves, but more reduced; inflorescence open, usually trichotomously branched at the first node then dichotomously branched above; flowers minute, 1-2 mm wide, yellow, glabrous within and without except for a sparsely hispid margin; achenes light brown, 1.7-2.3 mm long. Flowers July through August.