Plants 7–55 cm (self-incom-patible); glandular, not strongly scented. Stems usually purple-streaked. Leaf blades lanceolate or oblanceolate to linear, 10–70(–90) mm, margins (basal leaves) lobed to pinnatifid. Involucres ± broadly urceolate, 4–8 × 4–8(–12) mm. Phyllaries 13–27, apices usually shorter, sometimes longer than folded bases. Paleae in 1 series between ray and disc florets. Ray florets 13–27 (in 2 series); laminae proximally yellow, distally white, 5–10(–14) mm. Disc florets 35–100+; corollas 3–5 mm; anthers ± dark purple. Ray cypselae glabrous. Disc pappi 0 or of 8–14 whitish, ± ovate or elliptic, ± equal scales 0.5–2 mm, not plumose, not adaxially woolly (bases sparsely setose). 2n = 14.
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