Photo and Download Link
Cirsium arvense (L.) Scop. -
Canada thistle
CIAR4
Robert H. Mohlenbrock. USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. Provided by USDA NRCS Wetland Science Institute (WSI).
Usage Requirements.

To download the original size of this image, click on the link below.
Usage Requirements.
Download a high-resolution JPEG image of Cirsium arvense (392 KB)
|