Mary Ellen (Mel) Harte, Bugwood.org

Mary Ellen (Mel) Harte, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Mary Ellen (Mel) Harte, Bugwood.org

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

John D. Byrd, Mississippi State University, Bugwood.org

Dave Powell, USDA Forest Service (retired), Bugwood.org

Mary Ellen (Mel) Harte, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org