Herbs, spreading, annual, (0.5–)1–3 dm, glabrous, greenish to reddish. Stems: caudex absent; aerial flowering stems erect, solid, not fistulose, 0.2–0.6 dm, glabrous. Leaves basal; petiole 0.5–3 cm, floccose; blade ovate to orbiculate, 0.4–1.5 × 0.4–1.2 cm, white-tomentose abaxially, floccose or glabrous and greenish adaxially, margins plane. Inflorescences cymose, open, 5–25 × 5–25 cm; branches glabrous; bracts 3, scalelike, 1–2 × 1–2 mm. Peduncles absent or erect, straight, slender, 0.1–0.5 cm, glabrous, absent distally. Involucres turbinate, 1.5–2 × 1–1.7 mm, glabrous; teeth 5, erect, 0.4–0.8 mm. Flowers 1.2–1.7 mm; perianth white to pale yellow, glabrous, pustulose proximally; tepals monomorphic, ovate; stamens included, 1.2–1.8 mm; filaments glabrous. Achenes brown, lenticular, 1.6–2 mm, glabrous. 2n = 36.