Page author: David Giblin
Pleiacanthus spinosus
thorny skeletonweed

Distribution: Occurring east of the Cascades crest in Washington, where known from Yakima County; central Oregon to California, east to the Rocky Mountains.

Habitat: Dry, open, generally rocky places at lower elevations.

Flowers: May-July

Origin: Introduced

Growth Duration: Perennial

Conservation Status: Not of concern


[none provided]

Accepted Name:
Pleiacanthus spinosus (Nutt.) Rydb.
Publication: Fl. Rocky Mts. 1069. 1917.

Synonyms & Misapplications:
Lygodesmia spinosa Nutt. [HC]
Additional Resources:

PNW Herbaria: Specimen records of Pleiacanthus spinosus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Pleiacanthus spinosus checklist entry.

E-Flora BC: Pleiacanthus spinosus atlas page.

CalPhotos: Pleiacanthus spinosus photos.

USDA Plants: Pleiacanthus spinosus information.

11 photographs:
Group by