Herbs, annual, 15-60 cm tall. Stems erect, often many branched from base or middle, branches ascending, spreading, long, white strigillose, sparsely villosulous, or glabrate. Leaves: petiole narrowly winged, base slightly expanded or auriculate-clasping, blade surfaces sparsely white strigillose, sometimes glabrate, base abruptly attenuate to rounded, margin serrate, repand-dentate, or entire; mid cauline blade narrowly elliptic-lanceolate or narrowly elliptic, 4-4.6 × 2-3 cm, uppermost similar or sublinear. Capitula hemispheric, ca. 1 cm in diam. (in fruit), numerous in laxly corymbiform or subcorymbiform synflorescences, those of lower branches in paniculate-corymbiform or racemiform synflorescences; peduncle short and slender. Phyllaries 2-seriate, subequal, oblong or oblanceolate, 3-4 mm, sometimes sparsely pubescent at base. Ray florets 2-or 3-seriate, white becoming pink, lamina linear; disk florets yellow to yellow-green, limb campanulate. Achenes ca. 3.5 mm, shortly beaked, apically with a viscid secretion. Fl. Aug-Oct.
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