15 



III. LITERATURE CITED 



Dorn, R.D. 1984. Vascular Plants of Montana. Mountain West 

 'publishing. Cheyenne, Wyoming. 276 pp. 



Hamilton, M.B. and T. Mitchell-Olds. 1989. Population biology 

 of Arabis fecunda , a rare endemic. 1. Directional _ selection 

 and interspecific competition. Evolution (In review) . 



Hitchcock, C.L., A. Cronquist, M. Owenby and J.W. Thompson. 



1964. Vascular Plants of the Pacific Northwest, Part 2. 

 University of Washington Press, Seattle, Washington. 

 597 pp. 



Lesica, P. 1985. Report on the conservation status of Arabis 



f4cunda . a potential candidate species. Unpublished report 

 to the U.S. Fish and Wildlife Service. Denver, Colorado. 

 17 pp. 



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

 perennial plant species in permanent belt transects. 

 Natural Areas Journal 7: 65-68. 



Presley, M.W. 1971. Igneous and metamorphic geology of the 



Willow Creek drainage basin, southern Sapphire Mountains, 

 Montana. M.S. thesis. Department of Geology, University of 

 Montana. Missoula, Montana. 



Richards, R.W. and J.T. Pardee. 1925. The Melrose Phosphate 

 Field, Montana. U.S.G.S. Bull. 780: 1-32. 



Rollins, R.C. 1984. Studies in the Cruciferae of western North 

 America II. Contr. Gray Herb. 214: 1-18. 



Schassberger, L.A. 1988. Update to the report on the 



conservation status of Arabis fecunda . a candidate 

 threatened species. Unpublished report to the U.S. Fish and 

 Wildlife Service. Denver, Colorado, 36 pp. 



Schassberger, L.A. 1990. Update to the report on the 



conservation status of Arabis fecunda , a candidate 

 threatened species. Unpublished report to the U.S. Fish and 

 Wildlife Service. Denver, Colorado. 



Shelly, J.S. 1989. Plant species of special concern. Montana 



Natural Heritage Program. Helena, Montana. 22 pp. (mimeo) . 



U.S. Department of Agriculture, Forest Service. 1988. Sensitive 

 Plant Field Guide to Montana. U.S. Forest Service, Northern 

 Region, Range, Air, Watershed, and Ecology Unit. Missoula, 

 Montana. 



