Page author: Don Knoke
Symphyotrichum jessicae
Jessica's aster, Palouse aster
WTU specimens
Other herbaria

Distribution: The Palouse country of southeast Washington and adjacent Idaho.

Habitat: Streambanks and open places.

Flowers: July - September

Origin: Native

Conservation Status: Endangered in Washington (WANHP)


Stout perennial from a rhizome, 4-12 dm. tall, the herbage densely soft-pubescent.


Leaves ample, the lower abruptly petiolate, often deciduous; other leaves broadly lanceolate or ovate, sessile, 6-13 cm. long and 1.5-3.5 cm. wide.


Inflorescence a panicle, the heads numerous; involucre 7-10 mm. high, the bracts pubescent, imbricate; disk flowers numerous, yellow; rays 18-30, bluish, 12-20 mm. long; pappus of numerous tawny, capillary bristles.


Achenes pubescent.

Accepted Name:
Symphyotrichum jessicae (Piper) G.L. Nesom
Publication: Phytologia. 77: 283. 1995. 1995.

Synonyms & Misapplications:
Aster jessicae Piper [HC]
Additional Resources:

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

WA Flora Checklist: Symphyotrichum jessicae checklist entry.

E-Flora BC: Symphyotrichum jessicae atlas page.

CalPhotos: Symphyotrichum jessicae photos.

USDA Plants: Symphyotrichum jessicae information.

4 photographs:
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