Aster filaginifolius Hooker & Arnott, Bot. Beechey Voy., 146. 1833; Corethrogyne californica de Candolle; C. californica var. lyonii S. F. Blake; C. californica var. obovata (Bentham) Kuntze; C. filaginifolia var. bernardina (Abrams) H. M. Hall; C. filaginifolia var. brevicula (Greene) Canby; C. filaginifolia var. californica (de Candolle) Saroyan; C. filaginifolia var. glomerata H. M. Hall; C. filaginifolia var. hamiltonensis D. D. Keck; C. filaginifolia var. incana (Lindley) Canby; C. filaginifolia var. latifolia H. M. Hall; C. filaginifolia var. linifolia H. M. Hall; C. filaginifolia var. peirsonii Canby; C. filaginifolia var. pinetorum I. M. Johnston; C. filaginifolia var. rigida A. Gray; C. filaginifolia var. robusta Greene; C. filaginifolia var. sessilis (Greene) Canby; C. filaginifolia var. virgata (Bentham) A. Gray; C. filaginifolia var. viscidula (Greene) D. D. Keck; C. incana (Lindley) Nuttall; C. leucophylla (Lindley) Jepson; C. linifolia (H. M. Hall) Ferris; C. obovata Bentham; C. sessilis Greene; Lessingia filaginifolia (Hooker & Arnott) M. A. Lane; L. filaginifolia var. californica (de Candolle) M. A. Lane

Primary stems simple or distally branched. Leaf blades 10–70+ × 3–19+ mm. Involucres: lengths mostly 1–2 times diams. at flowering (living plants). Disc florets: corollas mostly 4–8 mm, tubes 0.6–1.4 mm, glabrous, throats 2.8–5.5 mm, often sparsely puberulent, lobes 0.7–1.2 mm, sparsely to densely glandular-puberulent abaxially, papillate-ciliolate on margins and/or adaxially. Cypselae 2–5 mm, faces puberulent to pilose; pappi 3–8 mm. 2n = 10.

Flowering year round, mostly Jul–Nov. Coastal scrub, coastal strand, chaparral, grasslands, coniferous forests, sometimes on serpentine; 0–2000(–3000) m; Calif., Oreg.; Mexico (Baja California).