Distribution: Occurring east of the Cascades crest in Washington, where endemic to the Wenatchee Mountains.
Habitat: Open, usually rocky areas, at middle elevations.
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Sensitive in Washington (WANHP)
Pollination: Bees, flies, beetles, wasps
Thinly woolly-canescent perennial from a branched, woody base and taproot, the numerous stems 1-3 dm. tall.
Leaves all cauline, flat, pinnatifid, with a broad midrib, up to about 5 cm. long.
Heads discoid, few or solitary on each stem; involucre 10-14 mm. high, the bracts narrow and equal; flowers light pink, all perfect; pappus of 10-16 hyaline scales.
Achene.
Publication: Vasc. Pl. Pacif. N.W. 5: 123, fig. [p. 125]. 1955.
PNW Herbaria: Specimen records of Chaenactis thompsonii in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Chaenactis thompsonii checklist entry.
OregonFlora: Chaenactis thompsonii information.
E-Flora BC: Chaenactis thompsonii atlas page.
CalPhotos: Chaenactis thompsonii photos.
USDA Plants: Chaenactis thompsonii information.
