Page authors: Don Knoke, David Giblin
Symphyotrichum laeve
Geyer's aster, smooth aster

Distribution: Occurring east of the Cascades crest in eastern Washington; Yukon Territory to California, east across most of North America to the Atlantic Coast.

Habitat: Open places in the plains and valleys to middle elevations in the mountains.

Flowers: July-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Fibrous-rooted perennials with a short rhizome or crown, the stems 4-12 dm. tall, the herbage glabrous and somewhat glaucous.


Leaves thick, entire or toothed, highly variable in size and shape, lanceolate or broader, the lower petioled, the other sessile and sometimes clasping.


Inflorescence open and flat-topped, its bracts broad-based and sub-clasping; involucre 5-7 mm. high, its bracts firm, imbricate, sharply pointed, with a narrow, elongate green tip; rays 15-30, blue or purple, 6-9 mm. long; disk flowers yellow; pappus of reddish capillary bristles.


Achenes glabrous.

Accepted Name:
Symphyotrichum laeve (L.) Á. Löve & D. Löve
Publication: Taxon. 31: 359. 1982.

Synonyms & Misapplications:
Aster laevis L. [HC]
Additional Resources:

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

WA Flora Checklist: Symphyotrichum laeve checklist entry.

OregonFlora: Symphyotrichum laeve information.

E-Flora BC: Symphyotrichum laeve atlas page.

CalPhotos: Symphyotrichum laeve photos.

USDA Plants: Symphyotrichum laeve information.

10 photographs:
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