Herbs, erect to spreading, annual, (1-)1.5-3.5(-4) dm, sparsely villous, grayish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.3-0.8(-1) dm, sparsely villous. Leaves basal and cauline; basal: petiole 1-3 cm, villous to pilose, blade elliptic to rotund, (0.8-)1-2.5 × (0.6-)1-2.5 cm, glabrous and green on both surfaces, margins entire, villous; cauline: petiole 0.5-1.5 cm, sparsely villous, blade elliptic, 0.5-1.5 × 0.5-1 cm, similar to basal blade. Inflorescences cymose, open, 5-35 × 5-35 cm; branches sparsely villous; bracts 3, scalelike, 1-2.5(-3) × 1-2.5 mm. Peduncles absent except in fork of proximal node, erect, straight, slender, 0.3-1(-1.5) cm, sparsely villous. Involucres turbinate, 1-1.5(-2) × 0.8-1.5 mm, glabrous; teeth 5, erect, 0.3-0.6(-0.8) mm. Flowers (1.2-)1.5-2.5 mm; perianth yellowish with darker yellow to greenish yellow or reddish brown midribs, sparsely hispid; tepals monomorphic, oblance-olate to oblong; stamens exserted, 1.2-1.7(-2) mm; filaments glabrous. Achenes shiny dark brown, 3-gonous, (2-)2.5-3 mm, glabrous.
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