32 



LITERATURE CITED 



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

 Publishing, Cheyenne, Wyoming. 276 pp. 



Hitchcock, A.S. 1971. Manual of the Grasses of the United 

 States, Dover Publications, New York. 1051 pp. 



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

 1969. Vascular Plants of the Pacific Northwest, Part One. 

 University of Washington Press, Seattle. 914 pp. 



Hitchcock, C.L., and A. Cronquist. 1973. Flora of the 



Pacific Nothwest. University of Washington Press, Seattle. 

 730 pp. 



Lesica, P., Moore, G., Peterson, K.M., and J.H. Rumely. 1984. 

 Vascular Plants of Limited Distribution in Montana. 

 Monograph No. 2, Montana Academy of Sciences, Supplement to 

 the Proceedings, Vol. 43. 61pp. 



Luer, C.A. 1975. The Native Orchids of the United States and 

 Canada. New York Botanical Garden, W.S. Cowell Ltd., 

 Ipswich. 361 pp. 



Mudge, M.R., Earhart, R.L., Whipple, J.W. and J.E. Harrison. 

 1983. Geologic and Structure Maps of Choteau 1° x 2° 

 Quadrangle. Montana Bureau of Mines and Geology. 



Shelly, J.S. 1988. Plant Species of Special Concern. 



Montana Natural Heritage Program, Helena. 12 pp. (raimeo) . 



U.S. Department of Agriculture. 1988. Sensitive Plant Field 

 Guide to Northern Idaho and Montana. U.S. Forest Service, 

 Northern Region. Range, Air, Watershed, and Ecology. 

 Missoula, Montana. 



U.S. Department of Interior, Fish and Wildlife Service. 1985. 

 Endangered and threatened wildlife and plants: Review of 

 plant taxa for listing as endangered or threatened species. 

 Federal Register 50(188): 39526-39584. 



