27 



2. Competition. 



a. Intraspecific: Individual plants of A. 

 barrii appear to be widely dispersed 

 within populations, and there is no 

 evidence of competition at the adult life 

 stage. It is possible that competition 

 induces this spacing during seedling 

 establishment. 



b. Interspecific: Although undocumented, it 

 is likely that A. barrii does not compete 

 well in dense vegetation, and is limited 

 to sites with low total vegetative cover. 



3. Toxic and allelopathic interactions: Not 



known . 



D. Hybridization. 



1. Naturally occurring: Unknown. 



2. Artificially induced: Unknown. 



3. Potential for spontaneous occurrence in 

 cultivation: Unknown. 



E. Other factors of population ecology: Unknown. 

 Current land ownership and management responsibility. 



A. General nature of ownership: United States 

 Government, State of Montana, private. 



/ 



B. Specific landowners (Montana) : 



1. U.S. Forest Service 

 Custer National Forest 

 2602 First Avenue North 

 Billings, MT 59103 



2. Bureau of Land Management 

 Miles City District Office 

 Garryowen Road 



P.O. Box 94 



Miles City, MT 59301 



3. State of Montana 

 Department of State Lands 

 1625 Eleventh Avenue 

 Helena, MT 59620 



