Calflora Taxon Report
Cirsium douglasii  DC.  var. douglasii 
Douglas' swamp thistle, Douglas' thistle
photo on Calflora
2011 Neal Kramer
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2011 Neal Kramer
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2023 R.A. Chasey
photo on Calflora
2011 Neal Kramer
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2011 Michael Perlmutter
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2025 Aaron Rocha
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2025 Aaron Rocha
photo on Calflora
2025 Aaron Rocha
photo on Calflora
2025 Aaron Rocha
photo on Calflora
2017 John H Malpas
photo on Calflora
2025 Aaron Rocha
photo on Calflora
2011 Michael Perlmutter
photo on Calflora
2011 Michael Perlmutter
photo on Calflora
2023 Marcus Tamura
photo on Calflora
2023 R.A. Chasey
photo on Calflora
2023 R.A. Chasey
photo on Calflora
2023 R.A. Chasey
photo on Calflora
Angela Pai
Cirsium douglasii var. douglasii is a perennial herb that is native to California.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Parent: Cirsium douglasii
Genus: Cirsium
Family: Asteraceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot
Wetlands: Occurs in wetlands

Communities: wetland-riparian

Name Status:
Accepted by JEF + PLANTS + POWO
Alternate Names:
PLANTSCirsium breweri var. wrangelii
External links:
Suggested Citation
“Calflora - Taxon Report.” The Calflora Database, a non-profit organization. .

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