 Cirsium acaule Credit: Photo by Franco Giordana |
 Cirsium acaule Credit: Photo by Franco Giordana |
 Cirsium acaule Credit: Photo by Gianluca Nicolella |
 Cirsium acaule Credit: Photo by Marinella Zepigi |
 Cirsium acaule Credit: Photo by Marinella Zepigi |
 Cirsium acaule Credit: Photo by Marinella Zepigi |
 Cirsium alsophilum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium alsophilum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium alsophilum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium alsophilum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium alsophilum Credit: Photo by Mirna and Attilio Marzorati |
 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. |
 Cirsium anglicum Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium arvense |
 Cirsium arvense |
 Cirsium arvense Robert H. Mohlenbrock USDA-NRCS PLANTS Database / USDA NRCS. 1992. Western wetland flora: Field office guide to plant species. West Region, Sacramento. - Not copyrighted image |
 Cirsium arvense 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. |
 Cirsium arvense Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium arvense Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium arvense Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium arvense Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium arvense Otto Wilhelm Thomé: Flora von Deutschland, Österreich und der Schweiz (1885) - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium canescens 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: 552. |
 Cirsium canescens 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: 551. |
 Cirsium canum Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium canum Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium carniolicum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium creticum Credit: Photo by Gianluca Nicolella |
 Cirsium creticum Credit: Photo by Gianluca Nicolella |
 Cirsium creticum Credit: Photo by Gianluca Nicolella |
 Cirsium creticum Credit: Photo by Gianluca Nicolella |
 Cirsium creticum Credit: Photo by Gianluca Nicolella |
 Cirsium creticum subsp. triumfetti Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium diacanthum Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium diacanthum Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium discolor 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. |
 Cirsium dissectum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium echinatum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium eriophorum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium eriophorum Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium eriophorum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium eriophorum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium eriophorum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium eriophorum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium eriophorum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium erisithales Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium erisithales Credit: Photo by Marinella Zepigi |
 Cirsium erisithales Credit: Photo by Marinella Zepigi |
 Cirsium ferox Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium filipendulum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium flodmanii 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: 551. |
 Cirsium glabrum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium heterophyllum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium heterophyllum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium heterophyllum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium heterophyllum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium heterophyllum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium heterophyllum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium hillii 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: 552. |
 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 |
 Cirsium horridulum 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. |
 Cirsium italicum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium monspessulanum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium montanum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 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. |
 Cirsium ochrocentrum 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: 551. |
 Cirsium odontolepis Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium oleraceum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium oleraceum Jan Kops et al. - Flora Batava - Permission granted to use under GFDL by Kurt Stueber. Source: www.biolib.de - Permission is granted to copy, distribute and/or modify this image under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". |
 Cirsium oleraceum Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium oleraceum Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium oleraceum Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium oleraceum Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium oleraceum Credit: Photo by Marinella Zepigi |
 Cirsium oleraceum Credit: Photo by Marinella Zepigi |
 Cirsium palustre 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: 554. |
 Cirsium palustre Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium palustre Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium palustre Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium palustre Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium pannonicum Credit: Photo by Bruno Lanzini |
 Cirsium pannonicum Credit: Photo by Bruno Lanzini |
 Cirsium pannonicum Credit: Photo by Marinella Zepigi |
 Cirsium pannonicum Credit: Photo by Marinella Zepigi |
 Cirsium pannonicum Credit: Photo by Marinella Zepigi |
 Cirsium pannonicum Credit: Photo by Marinella Zepigi |
 Cirsium pannonicum Credit: Photo by Marinella Zepigi |
 Cirsium pitcheri 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. |
 Cirsium pumilum 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: 552. |
 Cirsium richterianum subsp. richterianum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium rivulare Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium spinosissimum Credit: Photo by Marinella Zepigi |
 Cirsium tenoreanum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium tenoreanum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium tenoreanum Credit: Photo by Mirna and Attilio Marzorati |
 Cirsium tuberosum Hippolyte Coste - Flore descriptive et illustrée de la France, de la Corse et des contrées limitrophes, 1901-1906 - This image is in public domain because its copyright has exipred. |
 Cirsium undulatum 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. |
 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. |
 Cirsium vulgare |
 Cirsium vulgare |
 Cirsium vulgare 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. |
 Cirsium vulgare Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium vulgare Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium vulgare Credit: Photo by Leo Michels. Usage: Public Domain |
 Cirsium vulgare Credit: Photo by Leo Michels. Usage: Public Domain |
