Annuals, 6–100 cm. Stems ± solid. Leaves: proximal blades pinnati-fid, faces ± hirsute or villous and sometimes stipitate-glandular. Heads usually in paniculiform arrays sometimes congested. Bracts subtending heads usually overlapping proximal 0–1/2 of each involucre. Phyllaries evenly stipitate-glandular, including margins and apices, usually with non-glandular, non-pustule-based hairs as well. Paleae in 1 series. Ray florets 8–13(–15); laminae pale to deep yellow, 4–8 mm. Disc florets 11–32, all or mostly functionally staminate; anthers reddish to dark purple. Pappi of 5–14 linear, lance-linear, or oblong, fimbriate to erose scales 1–2 mm.
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