Page author: David Giblin
Symphyotrichum ascendens
intermountain aster, long-leaved aster, western American aster, western aster

Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains and northern Great Plains.

Habitat: Meadows, grasslands, and forest openings, often where moist.

Flowers: July-October

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Upright and spreading, perennial herb 20-60 cm. tall; plants rhizomatous and forming loose clumps.

Accepted Name:
Symphyotrichum ascendens (Lindl.) G.L. Nesom
Publication: Phytologia. 77: 276. 1995.

Synonyms & Misapplications:
Aster adscendens Lindl.
Aster ascendens Lindl.
Aster chilensis Nees ssp. adscendens (Lindl.) Cronquist [HC]
Additional Resources:

PNW Herbaria: Specimen records of Symphyotrichum ascendens in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Symphyotrichum ascendens checklist entry.

OregonFlora: Symphyotrichum ascendens information.

E-Flora BC: Symphyotrichum ascendens atlas page.

CalPhotos: Symphyotrichum ascendens photos.

USDA Plants: Symphyotrichum ascendens information.

8 photographs:
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