14 



III. LITERATURE CITED 



Dorn» R.D. 198^. Vascular Plants of Montana. Mountain Press 

 Publishing* Cheyenne » Wyoming. 276 pp. 



Lackschewitz, K. 1970. Alpine and timberline flora in the 

 Bitterroot Mountains, Montana. Proceedings Montana Acad. 

 Sci. 30: 1-30. 



Lackschewitz, K. 1986. Plants of west-central Montana- 

 identification and ecology: annotated checklist. General 

 Technical Report INT-217. Ogden, UT: U.S. Department of 

 Agriculture, Forest Service, Intermountain Research Station. 

 128 pp. 



LsBiCA, P. 1987. A technique for monitoring nonrhizomatous, 

 perennial plant species in permanent belt transects. 

 Natural Areas Journal 7: 65-68. 



Rollins, R.C. 198^. Studies in the Cruciferae of western North 

 America II. Contr. Gray Herb. 21^: 1-18. 



Rollins, R.C, and E.A. Shaw. 1973. The Genus Lesquerella 

 (Cruciferae) in North America. Harvard University Press, 

 Cambridge, Massachusetts. 288 pp. 



Ross, C.P., B.A. Andrews, and I.J. Witkind. 1955. Geologic map 

 of Montana. U.S. Department of Interior, Geological Survey, 

 Washington, D.C. 



Shelly, J.S. 1988. Plant species of special concern. Montana 

 Natural Heritage Program, Helena. 12 pp. (mimeo). 



U.S. Department of Commerce. 1982. Monthly Normals of 

 Temperature, Precipitation, and Heating and Cooling Degree 

 Days 1951-80. National Oceanic and Atmospheric 

 Administration, CI imatography of the United States No. 81. 

 23 pp. 



