Calliachyris fremontii Torrey & A. Gray, Boston J. Nat. Hist. 5: 110. 1845

Plants 8–40 cm (self-incom-patible); not glandular, not strongly scented. Stems not purple-streaked. Leaf blades lanceolate or oblanceolate to linear, 6–70(–90) mm, margins (basal leaves) lobed (pinnatifid). Involucres hemispheric to depressed-hemispheric, 4–11 × 3–11+ mm. Phyllaries 3–15, apices often longer (sometimes shorter) than folded bases. Paleae subtending ± all disc florets. Ray florets 3–15; laminae proximally yellow, distally white or light yellow, 5–18(–23) mm. Disc florets 4–100+; corollas 3.5–4.5 mm; anthers ± dark purple. Ray cypselae glabrous. Disc pappi of 9–12 white to tawny, lance-attenuate, ± equal scales 2–5 mm, each neither plumose nor adaxially woolly. 2n = 14.

Flowering Feb–May. Grasslands, meadows, open woodlands, disturbed sites, often valley bottoms, swales, edges of vernal pools, usually on heavy or shallow soils, sometimes serpentine; 10–800 m; Calif.

Layia fremontii occurs in the Great Valley and adjacent foothills of the Cascade Range and Sierra Nevada.