6 



LITERATURE CITED 



Lesica, P. 1985. Report on the conservation status of Arabis 

 fecunda, a potential candidate species. Submitted to the U.S. 

 Fish and Wildlife Service, Office of Endangered Species, Denver, 

 CO. 



Lesica, P. 1987. A technique for monitoring nonrhizomatous , 

 perennial plant species in permanent belt transects. Natural 

 Areas Journal 7: 65-68. 



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

 endangered vascular plants of Montana. In preparation. 



Massey, J. R. and P. D. Whitson. 1980. Species biology, the key 

 to plant preservation. Rhodora 82: 97-103. 



Palmer, M. E. 1987. A critical look at rare plant monitoring in 

 the United State. Biological Conservation 39: 113-127. 



Rollins, R. C. 1984. Studies in the Cruciferae of v/estern North 

 America II. Contributions to the Gray Herbarium 214: 1-18. 



Schassberger, L. A. 1988. An update of the report on the 

 conservation status of Arabis fecunda , a candidate threatened 

 species. Report to the U.S. Fish and Wildlife Service, Office of 

 Endangered Species, Denver, CO. 



Sutter, R. D. 1986. Monitoring rare plant species and natural 

 areas - ensuring the protection of our investment. Natural Areas 

 Journal 6: 3-5. 



U.S. Department of Interior, Fish and Wildlife Service. 1990. 

 Endangered and threatened wildlife and plants; review of plant 

 taxa for listing as endangered or threatened species; notice of 

 review. Federal Register 55 (35): 6184-6229. 



