Fl. Bor.-Amer. 1: 316. 1833.
Leaf blades 6–25+ × 0.5–1.5 mm. Phyllaries 3–8 mm. Ray laminae 2–11 mm. Disc corollas 2–3.5 mm. Cypselae 2–3.5 mm; pappi 0.1–2 mm. 2n = 16.
Phenology: Flowering Apr–Sep.
Habitat: Openings in sagebrush scrub, pinyon-juniper woodlands, yellow-pine forests
Elevation: 300–2200 m
Calif., Idaho, Nev., Oreg., Wash.
Blepharipappus scaber is unusual among self-incompatible, continental tarweeds for occurring widely in western North America and having a relatively limited distribution in the California Floristic Province.