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Cirsium arvense

Naming
Scientific name: 
Cirsium arvense
Primary Common name: 
Canada thistle
Characteristics
Species Category: 
herbaceous
Current Extent: 
widespread
Likelihood of Introduction: 
n/a (already in CA)
TSN: 
36335
References
Sources: 
CDFA Noxious Weed List
California Invasive Plant Inventory (Cal-IPC List)
Arizona Noxious Weed List
Colorado Noxious Weed List
Idaho Noxious Weed List
Montana Noxious Weed List
New Mexico Noxious Weed List
Nevada Noxious Weed List
Oregon Noxious Weed List
Utah Noxious Weed List
Washington Noxious Weed List
Wyoming Noxious Weed List