this rare sedge should continue to be considered 

 sensitive by the BLM and USPS in Montana. Retention of 

 sensitive status by federal agencies will help ensure 

 that Carex parryana ssp. idahoa does not require 

 listing under the Federal Endangered Species Act in the 

 future . 



III. INFORMATION SOURCES 



A. HERBARIUM SPECIMENS: Specimens vouchering recently 

 verified as well as historical populations are 

 deposited at the herbaria of the University of Montana 



(MONTU, ca. 15) and Montana State University (MONT, ca . 

 4) . 



B. FIELD WORK: Lesica conducted general florist ic field 

 surveys in southwest Montana in 1985 (Big Sheep Creek) , 

 1992 (Highland Mtns. ) , 1993 (Tendoy Mtns . ) , 1994 

 (southern Beaverhead Co.), 1995 (Blacktail Mountains). 

 In 1997 he surveyed for Carex parryana ssp. idahoa in 

 Madison, Beaverhead and Silver Bow counties. Field 

 forms and photographs are deposited with the Montana 

 Natural Heritage Program in Helena. 



C. LITERATURE CITED 



Arno, S. F. and G. E. Gruel 1 . 1983. Fire history at the forest - 

 grassland ecotone in southwestern Montana. Journal of Range 

 Management 36: 332-336. 



Bailey, L. H. 1896. 1896. Notes on Carex. XVIII. Botanical 

 Gazette 21: 5. 



Booth, W. E. 1950. Flora of Montana Part 1, conifers and 

 monocots. Montana State College Research Foundation, Bozeman. 



Davis, R. J. 1952. Flora of Idaho. Brigham Young University 

 Press, Provo, UT. 



Dyer, M. I., C. L. Turner and T. R. Seastedt . 1993. Herbivory 

 and its consequences. Ecological Applications 3: 10-16. 



Faegri, K. and L. van der Pijl. 1971. The principles of 

 pollination biology. Pergamon Press, Oxford. 



Hansen, P. L., R. D. Pfister, K. Boggs, B. J. Cook, J. Joy, and 

 D. K. Hinkley. 1995. Classification and management of Montana's 

 riparian and wetland sites. University of Montana School of 

 Forestry Miscellaneous Publication No. 54, Missoula. 



Heidel, B. 1977. Montana plant species of special concern. 

 Montana Natural Heritage Program, Helena. 



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