Distribution: Occurring east of the Cascades crest in Washington; Alaska to Washington, Idaho, Utah, and Arizona, east to the northern Great Plains.
Habitat: Dry, open, and often rocky places in sagebrush
Flowers: June-August
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bees, butterflies, flies, apomixis?
Herbaceous perennial from a stout taproot, the stems curved at the base, 5-30 cm. tall; herbage densely pubescent with short, spreading hairs.
Basal leaves oblanceolate to spatulate, rounded or obtuse, triple-nerved; cauline leaves linear to ovate-oblong.
Heads solitary to several; involucre 4-7 mm. high, imbricate, glandular and short grey-hairy, the bracts narrow and thickened on the back; rays pistillate, 30-100, blue, white or pink, 5-15 mm. long; disk flowers yellow; pappus double, the outer short, the inner of 15-25 bristles.
Achene
PNW Herbaria: Specimen records of Erigeron caespitosus in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Erigeron caespitosus checklist entry
OregonFlora: Erigeron caespitosus information
E-Flora BC: Erigeron caespitosus atlas page
CalPhotos: Erigeron caespitosus photos