Canada thistle
(Cursium arvense) (L.) Scop. (Asteraceae)
Photo by Rich Hansen, USDA-APHIS-PPQ. Location: MSU, Bozeman, MT.
Photo taken by: Mary Ellen (mel) Harte, http://www.invasive.org Photo must not be used without permission from the photographer!
Photo taken by: Mary Ellen (mel) Harte, http://www.invasive.org Photo must not be used without permission from the photographer!
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