Bruce Ackley, The Ohio State University, Bugwood.org

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

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

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Theodore Webster, USDA Agricultural Research Service, Bugwood.org