Canada thistle, Cirsium arvense  (Asterales: Asteraceae) - 5417140

Canada thistle
Cirsium arvense (L.) Scop.

Descriptor: Infestation
Description: Clusters of Canada thistle Circium arvense, which is a wide spread perennial weed species in Norway, here in a barley field.
Image type: Field
Image location: Akershus County, Norway

Photographer Information

Name: Bonsak Hammeraas
Organization: Bioforsk - Norwegian Institute for Agricultural and Environmental Research
Country: Norway

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Image Number: 5417140

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Creative Commons License    This work is licensed under a Creative Commons Attribution-Noncommercial 3.0 United States License.

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Image Citation:(?) Bonsak Hammeraas, Bioforsk - Norwegian Institute for Agricultural and Environmental Research, Bugwood.org

Node Affiliation: University of Georgia

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Image uploaded on Wednesday, April 07, 2010
Image Information last updated on Monday, April 19, 2010