11 



H. LAND OWNERSHIP: Each of the study area sites listed previously 

 are on BLM lands although most or all of them appear to extend 

 onto adjoining private lands. 



I. ASSESSMENT SUMMARY: This state endemic extends across at least 

 seven counties in settings where there are few threats. Its 

 ecological amplitude is broader than previously known; not strictly 

 limited to areas with limestone bedrock. It is recommended that it be 

 dropped from active tracking by Montana Natural Heritage Program, 

 though it is a limited distribution taxon. 



LITERATURE CITED 



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

 Publishing, Cheyenne, WY. 27 6 pp. 



Heidel, B. L. 1994. Status review of sword townsendia (Townsendia 

 spathulata ) and Limestone Hills survey, Broadwater County, 

 Montana. Unpublished report for Butte District, Bureau of Land 

 Management. Montana Natural Heritage Program. Helena, 14 pp. 

 plus appendices. 



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



Unpublished list. Montana Natural Heritage Program, Helena, MT. 

 16 pp. 



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



Northwest. University of Washington Press, Seattle, WA. 73 pp. 



Lesica, P. and P. L. Achuff. 1992. Distribution of vascular plant 



species of special concern and limited distribution in the Pryor 

 Mountain Desert, Carbon County, Montana. Unpublished report to 

 USDI Bureau of Land Management, Billings, MT. Montana Natural 

 Heritage Program, Helena. pp. 



Poole, J. P. and B. L. Heidel. 1993. Sensitive plant surveys in the 

 Big Belt and Elkhorn Mountains, Helena National Forest. 

 Unpublished report to U.S. Forest Service. Montana Natural 

 Heritage Program, Helena. 129 pp. plus appendices. 



USDI Bureau of Land Management, 

 special status plant taxa. 



1993. Unpublished list of proposed 

 Billings, MT. 



Vanderhorst, J. 1993. Survey for sensitive plants on Doherty 



Mountain, Jefferson County, Montana. Unpublished report to the 

 Bureau of Land Management. Montana Natural Heritage Program, 

 Helena. 5 pp. plus appendices. 



