Herbs, spreading, annual, 0.5-4 dm, glabrous and often glaucous, greenish to grayish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.1-0.5(-0.7) dm, glabrous. Leaves basal; petiole 1.5-4 cm, floccose; blade cordate to orbiculate, 1-2(-3) × 1-2.5(-3) cm, densely white-tomentose abaxially, floccose or subglabrous and greenish adaxially, margins plane. Inflorescences cymose, open to diffuse, usually flat-topped, 5-35 × 5-35 cm; branches glabrous; bracts 3, scalelike, 1-2.5 × 0.5-2 mm. Peduncles erect, straight, stoutish, 0.3-1.5 cm, glabrous. Involucres turbinate to campanulate, 1-2 × 1.5-2.5 mm, glabrous; teeth 5, erect, 0.4-0.8 mm. Flowers 1-2.5 mm; perianth white to pink with greenish to reddish midribs, becoming rose to red, glabrous; tepals dimorphic, those of outer whorl flabellate, those of inner whorl lanceolate; stamens included, 1.2-1.7 mm; filaments pilose proximally. Achenes dark brown, 3-gonous, 1.5-2 mm, glabrous. 2n = 40.
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