ACKNOWLEDGMENTS 



These studies were funded under a challenge cost-share agreement 

 between the Montana Natural Heritage Program and the U.S. Forest 

 Service, Lewis & Clark National Forest. We thank Wayne Phillips 

 and Dr. Angela Evenden for their support and interest. We 

 gratefully acknowledge the technical support from Dr. Matt Lavin 

 and Sarah Mathews, Montana State University (chloroplast DNA 

 analysis), and Dr. Greg Brown, University of Wyoming (isozyme 

 electrophoresis) ; their work provided valuable information on 

 taxonomic relationships among the study populations. Hollis 

 Marriott, Wyoming Natural Diversity Data Base, provided 

 invaluable information on populations in Wyoming and Colorado, 

 and collected plant specimens from those states. Rupert Barneby, 

 New York Botanical Garden, examined collections from all three 

 states, and shared his valuable perceptions regarding the tv/o 

 species. Dr. Angela Evenden and John Pierce (U.S. Forest 

 Service, Missoula, Montana) assisted with the field surveys and 

 sample collections in Montana; their help and companionship was 

 invaluable to the success of this work. 



