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

Robert Vidéki, Doronicum Kft., Bugwood.org

Scott Bauer, USDA Agricultural Research Service, Bugwood.org

University of Georgia Plant Pathology , University of Georgia, Bugwood.org

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

John Cardina, The Ohio State University, Bugwood.org

Theodore Webster, USDA Agricultural Research Service, Bugwood.org

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

John Cardina, 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

Robert Vidéki, Doronicum Kft., Bugwood.org