56 



X. LITERATURE CITED 



Lesica, P. 1990. Habitat requirements, germination behavior and 

 seed bank dynamics of Howellia aquatilis in the Swan Valley, 

 Montana. Unpublished report to USDA Forest Service, 

 Flathead National Forest, Kalispell, Montana. Conservation 

 Biology Research, Helena, Montana. 44 pp. + appendix. 



Mueller-Dombois, D. and H. Ellenberg. 1974. Aims and methods of 

 vegetation ecology. John Wiley & Sons Inc., New York, New 

 York. 547 pp. 



Shelly, J.S. 1988. Status review of Howellia aquatilis . U.S. 

 Forest Service - Region 1, Flathead National Forest, 

 Montana. Unpublished report to USDA Forest Service, Flathead 

 National Forest, Kalispell, Montana. Montana Natural 

 Heritage Program, Helena. 120 pp. 



Shelly, J.S. 1989. Addendum to the status review of Howellia 

 aquatilis . U.S.D.A. Forest Service - Region 1, Flathead 

 National Forest, Montana. Unpublished report to USDA Forest 

 Service, Flathead National Forest, Kalispell, Montana. 

 Montana Natural Heritage Program, Helena. 17 pp. 



Shelly, J.S., and R. Moseley. 1988. Report on the conservation 

 status of Howellia aquatilis . a candidate threatened 

 species. Unpublished report to U.S. Fish and Wildlife 

 Service, Denver, Colorado. Montana Natural Heritage Program, 

 Helena. 166 pp. 



Shelly, J.S.*, and L. Schassberger. 1990. Update to the status 

 review of Howellia aquatilis . field surveys, monitoring 

 studies and transplant experiments. Unpublished report to 

 USDA Forest Service, Flathead National Forest, Kalispell, 

 Montana. 50 pp. 



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

 Our Natural Community: Region 1 - Threatened, Endangered 

 and Sensitive Species Program. U.S.D.A. Forest Service, 

 Northern Region, Wildlife and Fisheries, Missoula, Montana. 

 309 pp. + appendices. 



U.S. Department of Agriculture, Forest Service. 1988. Sensitive 

 Plant Field Guide (Montana), Northern Region. U.S.D.A. 

 Forest Service, Missoula, Montana. 



