IV. LITERATURE CITED 



Heinze, D.H. 1990. Memo to Deputy State Director, 10 August 

 1990, subject: Report on searches for Lemhi beardtongue 

 (Penstemon lemhiensis ) , Bureau of Land Management, Montana 

 State Office, Billings. 5 pp. 



Heinze, D.H. 1991. Memo to Montana Natural Heritage Program, 28 

 March 1991, subject: Penstemon lemhiensis at Badger Pass and 

 Ermont Gulch sites. Bureau of Land Management, Montana State 

 Office, Billings. 8 pp. 



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

 endangered vascular plants of Montana. Montana Natural 

 Heritage Program, Montana State Library, Helena. 



Reel, S., L. Schassberger , and W. Ruediger. 1989. Caring for 

 Our Natural Community: Region 1 - Threatened, Endangered 

 and Sensitive Species Program. U.S. Department of 

 Agriculture, Forest Service, Wildlife and Fisheries, 

 Missoula, Montana. 309 pp., appendices. 



Shelly, J.S. 1990a. Plant species of special concern. Montana 

 Natural Heritage Program, Helena, Montana. 20 pp. 



Shelly, J.S. 1990b. Status review update and establishment of 



demographic monitoring studies: Penstemon lemhiensis . Report 

 to U.S. Forest Service - Region 1, Beaverhead and Bitterroot 

 National Forests, Montana. Montana Natural Heritage Program, 

 Helena, 61 pp. 



U.S. Department of Interior. 1990. Endangered and threatened 

 wildlife and plants; review of plant taxa for listing as 

 endangered or threatened species; notice of review. Federal 

 Register 50 CFR Part 17: 6184-6229. 



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

 Guide, Region 1. U.S. Forest Service, Northern Region, 

 Range, Air, Watershed, and Ecology Section, Missoula, 

 Montana. 



