Ericaceae. University of Washington Press, Seattle. 614 

 pp. 



1964. Vascular plants of 



the Pacific Northwest, Part 2: Salicaceae to 



Saxif ragaceae. University of Washington Press, Seattle. 



597 pp. 



1973. Flora of the Pacific 



Northwest. University of Washington Press, Seattle, WA. 

 730 pp. 



Lesica, P. and P. L. Achuff. 1992. Distribution of vascular 

 plant species of special concern and limited distribution 

 in the Pryor Mountain Desert, Carbon County, Montana, 

 Unpublished report to the Bureau of Land Management, 

 Billings, Montana. Montana Natural Heritage Program, 

 Helena. 43 pp. 



Lesica, P. and J. C. Elliott. 1987. Distribution, age 

 structure, and predation of Bitterroot milkvetch 

 populations in Lemhi County, Idaho. Unpublished 

 report to the Bureau of Land Management, Boise, 

 Idaho. Conservation Biology Research, Helena, MT. 



Lewis, M. E. 1958. Carex - its distribution and importance in 

 Utah. Brigham Young University Science Bulletin, Biology 

 series 1, no. 2. Brigham Young University, Provo, UT. 43 

 pp. 



U. S. D. A. Forest Service. 1994. Update of Northern Region 

 sensitive species list. Unpublished list. U.S.F.S. 

 Northern Region, Missoula MT. 



U. S. D. I. Bureau of Land Management. 1993. Draft list of 

 sensitive and watch plant species in Montana. 

 Unpublished list. Billing, MT. 1 p. 



Vanderhorst, J. 1995a. Sensitive plant survey in the Horse 

 Prairie Creek drainage, Beaverhead County, Montana. 

 Unpublished report to the Bureau of Land Management, 

 Dillon, Montana. Montana Natural Heritage Program, 

 Helena. 



Vanderhorst, J. 1995b. Sensitive plant survey of Bannack 

 State Park, Beaverhead County, Montana. Unpublished 

 report to the Montana Department of Fish, Wildlife, and 

 Parks. Montana Natural Heritage Program, Helena. 



Vanderhorst, J. 1995c. Historical collections of Kochia 

 americana and Salix cascadensis from the Beaverhead 

 National Forest. Unpublished memo to the Beaverhead 



34 



