Illustrator(s) Mary S. Blankenship, Linda A. Vorobik, and Karen Klitz. .

Copyright to all material on this web site, except some of the images, belongs to Utah State University

Materials for this web site were developed as part of the Manual of Grasses for North America and Flora of North America projects. These projects were supported financially by Utah State University, the Utah Agricultural Experiment Station, the Chanticleer Foundation, the Flora North America Association, the Idaho Botanical Center, the National Fish and Wildlife Foundation, the National Science Foundation, and the following units within the U.S. government: U.S.D.A. Agricultural Research Service, U.S.D.A. Animal and Plant Health Inspection Service, Forest Service, Natural Resources Conservation Service, Bureau of Land Management, and National Park Service.

Of course, there would be nothing to present were it not for the efforts of numerous taxonomists, some as contributors and many others as donors of information. THANK YOU.

These pages are modified at irregular intervals to reflect new information. Modifications to the text are indicated as such; showing modifications to the maps is not feasible. For comments and questions, email mary.barkworth[at]usu.edu.