Heidel, B. L. 1994. Montana plant species of special concern, 

 Unpublished list. Montana Natural Heritage Program, Helena. 

 16 pp. 



Hendricks, P. and J. D. Reichel. 1995. 

 District, Custer National Forest: 

 Heritage Program, Helena. 



Bat survey of the Sioux 

 1994. Montana Natural 



Hendricks, P. and J. D. Reichel. 1995. Raptor survey of the Sioux 

 District, Custer National Forest: 1994. Montana Natural 

 Heritage Program, Helena. 



Hermann, F. J. 1970. Manual of the carices of the Rocky Mountains 

 and Colorado Basin, Agriculture Handbook No. 374. USDA, 

 Forest Service. 397 pp. 



Hitchcock, A. S. ; 2nd ed. revised by A. Chase. 1971. Manual of 

 the grasses of the United States. Dover Publications, Inc. 

 New York, NY. 2 volumes. 



Hitchcock, C. L. 

 Northwest. 



and A. Cronquist. 1973. Flora of the Pacific 

 University of Washington Press, Seattle. 730 pp. 



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

 1984. Vascular Plants of the Pacific Northwest, 

 of Washington Press. Seattle. Volumes 1-5. 



Thompson. 

 University 



Houtcooper, W. C. , D. J. Ode, J. A. 

 1985. Rare animals and plants 

 Naturalist 17 (3) : 143-165. 



Pearson and G. M. 

 of South Dakota. 



Vandel . 

 Prairie 



Johnson, W. F. 1988. Soil survey of Harding County, South Dakota. 

 USDA Soil Conservation Service, Pierre. 3 00 pp. plus maps. 



Larson, G. E. 1993. Aquatic and wetland vascular plants of the 

 northern Great Plains. Gen. Tech. Rep. RM-238. Fort Collins, 

 CO. USDA, Forest Service, Rocky Mountain Forest and Range 

 Experiment Station. 681 pp. 



Lenz, D. 1994. North Dakota rare plant list. North Dakota 

 Natural Heritage Inventory, Parks and Recreation Department, 

 Bismarck. 11 pp. 



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

 endangered vascular plants of Montana. Montana Natural 

 Heritage Program, Occasional Publication No. 1. Helena. 

 88 pp. 



Montagne, C. , L. C. Munz, G. A. Nielsen, J. W. Rogers and H. E. 

 Hunter. 1982. Soils of Montana. Montana Agricultural 

 Experiment Station Bull. 744. 95 pp. plus map. 



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