Cirsium altissimum USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 3: 549. - Views: 100
| Cirsium horridulum USDA-NRCS PLANTS Database / USDA NRCS. Wetland flora: Field office illustrated guide to plant species. USDA Natural Resources Conservation Service. - Not copyrighted image - Views: 153
| Cirsium horridulum Robert H. Mohlenbrock USDA-NRCS PLANTS Database / USDA SCS. 1991. Southern wetland flora: Field office guide to plant species. South National Technical Center, Fort Worth. - Not copyrighted image - Views: 156
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Cirsium horridulum Steve Hurst - USDA-NRCS PLANTS Database - Not copyrighted image - Views: 157
| Cirsium muticum USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 3: 553. - Views: 210
| Cirsium virginianum USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 3: 550. - Views: 153
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Cirsium vulgare � 2011 L.R. - Views: 833
| Cirsium vulgare � 2010 Carlo Cibei - Views: 872
| Cirsium vulgare � 2010 Carlo Cibei - Views: 835
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