Page author: David Giblin
Helianthus petiolaris
prairie sunflower
Specimens
Photos

Distribution: Occurring east of the Cascades crest in Washington; Washington to California, east to the Atlantic Coast.

Habitat: Dry, open areas, often where disturbed.

Flowers: June-September

Origin: Introduced from the Great Plains

Conservation Status: Not of concern

Description:

[none provided]


Accepted Name:
Helianthus petiolaris Nutt.
Publication: J. Acad. Nat. Sci. Philadelphia. 2: 115. 1821.

Synonyms & Misapplications:
Helianthus petiolaris Nutt. var. petiolaris
Infraspecies:
ssp. petiolaris – prairie sunflower   Occurring east of the Cascades crest in Washington; Washington to California, east to the Atlantic Coast.
Additional Resources:

PNW Herbaria: Specimen records of Helianthus petiolaris in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Helianthus petiolaris checklist entry.

E-Flora BC: Helianthus petiolaris atlas page.

CalPhotos: Helianthus petiolaris photos.

USDA Plants: Helianthus petiolaris information.

9 photographs:
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