Todd Pfeiffer, Klamath County Weed Control, Bugwood.org

Nancy Loewenstein, Auburn University, Bugwood.org

Nancy Loewenstein, Auburn University, Bugwood.org

Joseph M. DiTomaso, University of California - Davis, Bugwood.org

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

Nancy Loewenstein, Auburn University, Bugwood.org

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

Nancy Loewenstein, Auburn University, Bugwood.org

Nancy Loewenstein, Auburn University, Bugwood.org

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

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

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org

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

Joseph M. DiTomaso, University of California - Davis, Bugwood.org

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

USDA NRCS PLANTS Database , Bugwood.org

USDA NRCS PLANTS Database , Bugwood.org