Plants 2–15 dm.
Leaves 2–20 cm.
Involucres 10–22 mm.
Phyllaries glabrous.
Florets 5–35; ligules 15–22 mm, white, outer sometimes purplish.
Fruits bodies 4–7 mm, tan to brown, smooth to roughened; beaks 5–7 mm; pappus bristle barbs straight.
Oak woodlands, chaparral, desert scrub. Flowering May–Jul. 500–1400 m. Sisk. CA, NV; southeast to AZ, south to Mexico. Native.
as described under Rafinesquia californica
Plants 20-150 cm. Involucres 12-20 mm. Ligules surpassing phyllaries by 5-7 mm. Cypselae light tan or sordid, 9-14 mm, including very slender beaks 5-7 mm; pappi of 6-15, wholly plumose bristles, barbs straight, separate. 2n = 16.Flowering Apr-Jun. Open places in coastal sage scrub, chaparral, oak woodlands in northern and coastal California and southwestern Oregon (often found after fires), Upper Sonoran Zone; 100-1500 m; Ariz., Calif., Nev., Oreg.; Mexico (Baja California).