Acknowledgments

This Checklist represents the cumulative efforts of numerous individuals over many years: collectors of specimens; authors of the professional literature on botany, including graduate students and colleagues who have written "Preliminary Reports;" the many taxonomic experts who have named our specimens, including specialists in certain difficult groups, whose help has been actively solicited; and all directors and curators of the various herbaria throughout the state and country who have made specimens from Wisconsin available to our staff and students. Special thanks are due to Anita F. Cholewa (University of Minnesota-St. Paul), Gary Fewless (University of Wisconsin-Green Bay), William J. Hess and Kim A. Allen (The Morton Arboretum), Neil T. Luebke and Kevin J. Lyman (Milwaukee Public Museum), and Richard A. Henderson (Wisconsin Department of Natural Resources) for providing information from their respective databases. James B. Phipps (Crataegus), Mark P. Widrlechner (Rubus), Anton A. Reznicek (Carex), and Robert W. Freckmann (Panicum) have helped by reviewing the draft treatments for these genera, and we are very grateful for their help.

We wish to thank the Biological Resources Division, U.S. Geological Survey, and the Wisconsin Department of Natural Resources, through their Aquatic and Terrestrial Resource Inventory (ATRI) program, for providing funding to see this project through to conclusion. We acknowledge the Department of Botany and the Herbarium of the University of Wisconsin-Madison for providing the computer facilities and ongoing support necessary to carry out this project. Individuals we wish to thank for their support include James P. Bennett (Biological Resources Division, U.S. Geological Survey and Institute for Environmental Studies, University of Wisconsin - Madison); James T. Addis, Dreux J. Watermolen, Russell Dunst, Betty L. Les, S. Kelly Kearns, and June M. Dobberpuhl (Wisconsin Department of Natural Resources); and Emmet J. Judziewicz. Kandis Elliot, Department of Botany, University of Wisconsin-Madison kindly furnished the cover illustration.

For their helpful suggestions, comments, and corrections on the draft Checklist we wish to thank the following: Harvey E. Ballard, Jr., James P. Bennett, June M. Dopperpuhl, Thomas Gerstenberger, Neil A. Harriman, Charlie R. Hart, Emmet J. Judziewicz, Robert R. Kowal, Kenneth I. Lange, Mark K. Leach, Lawrence A. Leitner, S. Kelly Kearns, James B. Phipps, Katherine D. Rill, Joseph R. Rohrer, Floyd Swink, Robert W. Wernerehl, Paul West, and Andrew H. Williams.

We also would like to give special thanks to Merel Back and Greg Gallaugher for their efforts in creating the original web site and helping make this site a success!