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LITERATURE CITED 



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Bayer, R.J. 1989a. A systematic and phytogeographic study of 



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Bayer, R.J. 1989b. Patterns of isozyme variation in western North 

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Calkin, F.C. and W.H. Emmons. 1915. U.S.G.S. Geologic Atlas of 

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Dorn, R.D. 1984. Vascular plants of Montana, 

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Mountain West 



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Lesica, P. and J.S. Shelly. 1991. Sensitive, threatened and 

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