Carduus
plumeless thistle
Specimens
Photos
Origin: Introduced
Conservation Status: Not of concern
Description:
[none provided]
Accepted Name:
Carduus
Publication: Sp. Pl. 2: 820. 1753; Gen. Pl. ed. 5, 358. 1754.
Publication: Sp. Pl. 2: 820. 1753; Gen. Pl. ed. 5, 358. 1754.
Synonyms & Misapplications:
(none provided)
Species in Carduus:
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Carduus acanthoides – plumeless thistle, spiny plumeless thistle
Occurring east of the Cascades crest in northeastern Washington; British Columbia to Washington, also in California, east to the northern Rocky Mountains, Great Plains, and eastern North America. -
ssp. acanthoides Occurring east of the Cascades crest in northeastern Washington; British Columbia to Washington, also in California, east to the northern Rocky Mountains, Great Plains, and eastern North America.
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Carduus nutans – musk thistle, nodding thistle Occurring in scattered locations on both sides of the Cascades crest in Washington; British Columbia to California, east to the Atlantic Coast.
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Carduus pycnocephalus – shore thistle Occurring west of the Cascades crest in Washington, where known only from Clallam County; Washington to California and Idaho, also in central and eastern U.S.
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ssp. pycnocephalus – Italian plumeless thistle Occurring west of the Cascades crest in Washington, where known only from Clallam County; Washington to California and Idaho, also in central and eastern U.S.
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Carduus tenuiflorus – slender flowered thistle, winged plumeless thistle Occurring west of the Cascades crest in southwestern Washington; Washington to California, also in the eastern U.S.
Additional Resources:
PNW Herbaria: Specimen records of Carduus in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Carduus checklist entry
OregonFlora: Carduus information
E-Flora BC: Carduus atlas page
CalPhotos: Carduus photos
81 photographs:
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