Scientific Name: Cirsium hookerianum Nutt.

Caption: Cirsium hookerianum - close-up of heads

Photographer: Keil, David

Image Source: http://compositae.lifedesks.org/node/44

Notes: Cirsium hookerianum - close-up of heads

Canada.  Alberta: Banff National Park

Copyright: http://creativecommons.org/licenses/by-nc/3.0/

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