Keywords: Cirsium horridulum NRCS.jpg en Cirsium horridulum Michx yellow thistle 1991 http //plants usda gov/java/profile symbol ciho2 USDA-NRCS PLANTS Database Cirsium horridulum Michx Robert H Mohlenbrock USDA SCS 1991 Southern wetland flora Field office guide to plant species South National Technical Center Fort Worth Courtesy of USDA NRCS Wetland Science Institute This image is not copyrighted and may be freely used for any purpose Please credit the artist original publication if applicable and the USDA-NRCS PLANTS Database The following format is suggested and will be appreciated 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 PD-USGov Uploaded with UploadWizard Cirsium horridulum |