Carduus pycnocephalus
Italian plumeless thistle
WTU specimens
Other herbaria

Distribution: Known from Clallam County in Washington; Washington to California and Idaho, also in central and eastern U.S.

Habitat: Disturbed, open areas at low elevation.

Flowers: June-July

Origin: Introduced from Europe

Conservation Status: Not of concern


[none provided]

Accepted Name:
Carduus pycnocephalus L.
Publication: Sp. Pl. Ed. 2,. 2: 1151. 1763.

Synonyms & Misapplications:
(none provided)
ssp. pycnocephalus – Italian plumeless thistle
Additional Resources:

PNW Herbaria: Specimen records of Carduus pycnocephalus in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Carduus pycnocephalus checklist entry.

E-Flora BC: Carduus pycnocephalus atlas page.

CalPhotos: Carduus pycnocephalus photos.

USDA Plants: Carduus pycnocephalus information.

3 photographs:
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