John M. Randall, The Nature Conservancy, Bugwood.org

John M. Randall, The Nature Conservancy, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

John M. Randall, The Nature Conservancy, Bugwood.org

John M. Randall, The Nature Conservancy, Bugwood.org

Steve Dewey, Utah State University, Bugwood.org

John M. Randall, The Nature Conservancy, Bugwood.org

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org