Ohio State Weed Lab , The Ohio State University, Bugwood.org

Ohio State Weed Lab , The Ohio State University, Bugwood.org

Theodore Webster, USDA Agricultural Research Service, Bugwood.org

Ohio State Weed Lab , The Ohio State University, Bugwood.org

Catherine Herms, The Ohio State University, Bugwood.org

Catherine Herms, The Ohio State University, Bugwood.org