Herbs, spreading to erect, annual, 0.5-10 dm, glabrous, greenish to grayish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.4-4 dm, glabrous. Leaves basal or sometimes sheathing up stems 1-3(-5) cm; petiole 1-10 cm, tomentose; blade suborbiculate to subcordate, 1-5 × 2-8 cm, densely white-tomentose abaxially, floccose or glabrous and green adaxially, margins plane or wavy, entire or crisped. Inflorescences cymose, open, spreading to rather erect and somewhat strict, 5-70 × 10-60 cm; branches glabrous; bracts 3, scalelike, 1-1.5 × 0.5-1 mm. Peduncles absent or erect, straight, stout, 0.01-0.1 cm, glabrous. Involucres turbinate, 1-2 × 1-1.8 mm, glabrous; teeth 5, erect, 0.4-1.2 mm. Flowers 1.5-1.8 mm; perianth white with greenish or reddish midribs, becoming reddish, glabrous; tepals monomorphic, lanceolate to spatulate or ovate; stamens mostly included, 1-1.5 mm; filaments glabrous. Achenes brown, 3-gonous, 2 mm, glabrous.
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