Herbs, spreading, annual, 0.5-3 dm, glabrous, greenish, grayish, or reddish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.2-0.8 dm, glabrous except for few glands proximally. Leaves basal; petiole 1-3 cm; blade oblong-ovate to round, 0.5-2.5(-3) × 0.4-2(-2.5) cm, densely white-tomentose abaxially, floccose to subglabrate and greenish adaxially, often with some glandular hairs, margins plane or rarely crenulate. Inflorescences cymose, mostly open, 5-25 × 05-25 cm; branches glabrous; bracts 3, scalelike, 1-3 × 1-2 mm. Peduncles erect, mostly straight, slender, 0.1-5(-7) cm, glabrous. Involucres campanulate, 1-1.5(-1.7) × 1.5-3 mm, glandular-puberulent; teeth 5, erect, 0.4-0.7 mm. Flowers 1-1.7 mm in early anthesis, becoming 1.5-3 mm; yellow in early anthesis, becoming reddish yellow to red, glandular; tepals dimorphic, those of outer whorl oblong-elliptic to obovate, those of inner whorl oblong; stamens included, 1-1.5 mm; filaments mostly glabrous. Achenes dark brown, usually lenticular, 0.6-0.8 mm, glabrous. 2n = 32.
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