Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Bruce Ackley, The Ohio State University, Bugwood.org

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

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

Ken Chamberlain, The Ohio State University, Bugwood.org

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

Mark Czarnota, University of Georgia, Bugwood.org

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org

USDA NRCS PLANTS Database , Bugwood.org