Page authors: Don Knoke, David Giblin
Oreostemma alpigenum
alpine aster

Distribution: Occurring in the Cascades and Olympic mountains in Washington; British Columbia to California, east to Montana, Wyoming, and Nevada.

Habitat: Alpine meadows, slopes, and rocky areas.

Flowers: June-September

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern


Dwarf perennial from a short, woody base, 3-40 cm. tall.


Basal leaves persistent, entire, linear to linear-elliptic or oblanceolate, 2-25 cm. long and 1-15 mm. wide; cauline leaves few and much reduced.


Heads solitary; involucre 3-15 mm. high, the bracts imbricate, papery at the base, often purplish, with short woolly hairs on the margins and under the heads; rays 10-40, violet or lavender, 7-15 mm. long

Accepted Name:
Oreostemma alpigenum (Torr. & A. Gray) Greene
Publication: Pittonia. 4: 224. 1900.

Synonyms & Misapplications:
Aster alpigenus (Torr. & A. Gray) A. Gray [HC]
var. alpigenum – alpine aster, tundra mountaincrown    Occurring in the Cascades and Olympic mountains in Washington; Washington to Oregon.
Additional Resources:

PNW Herbaria: Specimen records of Oreostemma alpigenum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Oreostemma alpigenum checklist entry.

E-Flora BC: Oreostemma alpigenum atlas page.

CalPhotos: Oreostemma alpigenum photos.

USDA Plants: Oreostemma alpigenum information.

31 photographs:
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