Alfred Cofrancesco, U.S. Army Corps of Engineers, Bugwood.org

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

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

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

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

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

USDA NRCS PLANTS Database , Bugwood.org

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org