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Associated species differ somewhat according to the particular area in which this species is found 

 in Montana. In the Grasshopper Study Area, it occupied sagebrush and grassland slopes that 

 tended to be in secondary range between gentler slopes. In the Upper Madison Valley Study 

 Area, it occupied grasslands in droughty but level valley bottom and terrace settings (Appendix 

 D-8). Separate lists of associated species associated are presented below for the Grasshopper and 

 the Upper Madison Valley study areas: 



Grasshopper associated species : 

 Agropyron spicatum 

 Artemisia trident at a 

 Artemisia tripartita 

 Oxytropis besseyi 

 Phlox bry aides 



Upper Madison Valley associated species: 



Agropyron spicatum 



Antennaria microphylla 



A rtem is ia frigida 



Astragalus adsurgens 



Bouteloua gracilis 



Chrysopsis villosa 



Chrysothamnus viscidus 



Grindelia squarrosa 



Koeleria macrantha 



Poa secunda 



Seloginella densa 



Senecio canus 



Sphaeromeria coccinea 



Stephanotneria spinosa 



Outside the study areas, the species has been documented from barren clay buttes, dry subalpine 

 meadow, and Festuca idahoensis/Agropyron spicatum h.t. 



POPULATION INFORMATION: Population numbers in the study areas ranged from 

 estimates of 50-10,000+. Two of the largest known populations in the state are from the Upper 

 Madison Valley Study Area, followed by one of the Grasshopper Study Area populations and by 

 BLM populations documented in previous studies. 



MANAGEMENT CONSIDERATIONS: Distribution patterns of Astragalus terminalis in this 

 study area correspond with secondary ranges at low elevations. Its densities inside an exclosure 

 in the Upper Madison Valley Study Area were much higher than outside the exclosure (#007); 

 additionally, many of the plants in a nearby population had inflorescences removed, probably by 

 game. No plants were found across the cattle guard in contiguous habitat grazed by cattle. These 



