All vascular plants encountered were identified in order to 

 consider prospective sensitive species not included in the original 

 target list, and to compile a preliminary flora for the District. 

 Primary references used to key out plants in the field were Van 

 Bruggen (1985), Dorn (1977, 1984, 1992), Larson (1993) and Great 

 Plains Flora Association (1986). 



There is high dissimilarity between the Montana and South Dakota 

 target lists of state species of special concern because of low 

 endemism levels in the northern Great Plains, with many of the taxa 

 being peripherals at their eastern or western range limits and 

 barely crossing the respective state lines. Field notes were taken 

 throughout the study area on all species that are considered as 

 species of special concern in either Montana, South Dakota, or 

 North Dakota to provide information that might help determine 

 habitat requirements and status across state lines. 



Field survey forms were transcribed for BCD data entry in the 

 respective Natural Heritage Program offices. These entries have 

 been made into printouts (Appendix C) . All Montana records have 

 also been incorporated into a database accessible on the Data 

 General system of the U.S. Forest Service. 



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