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Cirsium horridulum NRCS. en Cirsium horridulum Michx yellow thistle Uploaded original pub date not given usda gov symbol CIHO photoID cihoavp tif USDANRCS PLANTS Database Cirsium horridulum Michx Clarence Rechenthin Courtesy of USDA NRCS Texas State Office This image is not copyrighted and may be freely used for any purpose Please