Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray

Cirsium pitcheri (Torr. ex Eaton) Torr. & A. Gray. Cirsium pitcheri, sometimes called Pitcher's thistle or dune thistle, is a species of thistle native to sand dune shorelines along the upper Great Lakes. It is native to Indiana, Illinois, Michigan, Wisconsin, and Ontario. It is listed by the U.S. Fish and Wildlife Service as a threatened species.