ACKNOWLEDGMENTS 



We thank Clint McCarthy foi his help throughout the study. Additional help was 

 provided by Jim Farrell of the Sioux Ranger District and the South Dakota Natural Heritage 

 Program. Keith Dueholm and Michelle Brown assisted with field work. D. D. Dover, C. Jones. 

 K. Jurist, and S. Thweatt assisted with element occurrence and map preparation. Financial 

 support for the project came from the Custer National Forest (U.S. Forest Service, Northern 

 Region) and the Montana Natural Heritage Program (Montana State Library, Natural Resources 

 Information System and The Nature Conservancy). 



