LITERATURE CITED 



Barneby, R. C. 1964. Atlas of the North American Astragalus Parts 1 and 2 

 Mem. N. Y. Bot. Gard. 13:1-1188. 



Hitchcock, C. L. , A. Cronquist, M. Owenby, and J. W. Thompson. 1961. Vascular 

 Plants of the Pacific Northwest Part 3. University of Washington Press, 

 Seattle. 



Hunt, C. B. 1967. Physiography of the United States. Freeman, San Francisco. 



Lesica, P. 1985. The distribution and reproduction effort of the rare plant 

 Astragalus scaphoides in Montana and Idaho. Submitted to Northwest Science. 



Kuchler, A. W. 1964. The potential natural vegetation of the conterminous 

 United States. Am. Geog. Soc. Spec. Publ . 36:122-147. 



Steele, R. , S. J. Brunsfeld, D. M. Henderson, K. E. Holte, F. D. Johnson, and 

 P. L. Packard. 1981. Vascular Plants of Concern in Idaho. University of 

 Idaho Forest, Wildlife and Range Experiment Station Bulletin No. 34. 



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