Page authors: David Giblin, Don Knoke
Eurybia integrifolia
thickstem aster

Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to Montana, Wyoming, and Utah.

Habitat: Dry meadows, open coniferous forests, and riparian areas from middle elevations to the subalpine.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Stout, fibrous-rooted perennial from a short rhizome or woody base, glandular below, often with spreading hairs.


Leaves alternate, entire, the lower and/or basal ones broadly oblanceolate or elliptic, petiolate, 8-25 cm.long, the others sessile and clasping, oblong to lance-ovate, 3-11 cm long and 1-4 cm wide, reduced upward.


Inflorescence elongate; heads rather large, the involucre 8-14 mm. high, glandular, not much imbricate, the outer bracts 1-3 mm. wide and somewhat leafy, the inner narrower and purplish; rays 10-27, violet-purple, 10-15 mm. long; disk flowers yellow; receptacle flat, naked; papus of capillary bristles.



Accepted Name:
Eurybia integrifolia (Nutt.) G.L. Nesom
Publication: Phytologia. 77: 260. 1995.

Synonyms & Misapplications:
Aster amplexifolius Rydb.
Aster integrifolius Nutt. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Eurybia integrifolia in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Eurybia integrifolia checklist entry.

E-Flora BC: Eurybia integrifolia atlas page.

CalPhotos: Eurybia integrifolia photos.

USDA Plants: Eurybia integrifolia information.

13 photographs:
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