Pl. Hartw., 319. 1849.
Dioecious. Plants 18–40 cm. Stolons none. Basal leaves: 1–3-nerved, oblanceolate to elliptic, 20–50 × 4–15 mm, tips acute, faces ± gray-tomentose. Cauline leaves lanceolate, 15–45 mm, not flagged. Heads 10–75 in paniculiform arrays. Involucres: staminate 4–5 mm; pistillate 4–5 mm. Phyllaries (relatively broad) distally silvery white. Corollas: staminate 2.5–3.5 mm; pistillate 3–4 mm. Cypselae 1–1.5 mm, glandular; pappi: staminate 4–5 mm; pistillate 3–4 mm. 2n = 28.
Phenology: Flowering summer.
Habitat: Openings in dry coniferous forests
Elevation: 600–2000 m
Calif., Nev., Oreg., Wash.
Antennaria argentea is distinguished by its robustly stoloniferous habit and silvery white phyllaries.