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Canada Thistle (Cirsium arvense)

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Canada Thistle (Cirsium arvense), Mt. St. Helens National Volcanic Monument, Washington, US

Filename: USWASH-00052.dng
Copyright Roddy Scheer

Keywords:

Mt. St. Helens National Volcanic Monument, Mt. St. Helens National Volcanic Monument, Mount St. Helens, Mt. Saint Helens, Mount Saint Helens, Canada Thistle, Cirsium arvense, invasive species, non-native, North America, United States, America, USA, US