population is within 1 mile of an active mine. Mining is 

 probably the principal threat to A^ f ecunda in the study area. 

 In addition, the northern Moose Town population is in close 

 proximity to a major road and may be threatened by future road 

 construction. Finally, the areas are subject to livestock 

 grazing, but disturbance appears to be moderate at this time and 

 is probably not detrimental to the species. These populations 

 are on the eastern edge of the known range of the species. 



Element Name: Carex idahoa (Bailey) 



Comjnon Name: Idaho sedge 



Range: Beaverhead, Madison, Powell and Silver Bow counties, 

 Montana and southeast Idaho 



Element Rank: G2QS2 



Federal Status: USFWS 3C, USPS Region 1 Sensitive 



Local Occurrence: I relocated the population in the Moose Tovm 

 area and discovered another in the Fish Creek area (Fig. 2,3). 

 Both populations occur in drier ecotonal areas of wet meadows 

 along streams in areas influenced by calcareous parent material. 

 Both populations contain fewer than 100 plants. The associated 

 plant community is Potentilla f ruticosa / Deschampsia cespitosa . 



Comments: This plant is also referred to as Carex parryana 

 Dewey ssp. idahoa (Bailey.) Murray. 



I searched for this plant throughout the study area, but 

 located only these two populations. However, populations are 

 usually small, and I may not have located all of them. 

 Nonetheless, C^ idahoa does seem to be rare in the study area. 

 ^Populations may be threatened by livestock grazing. In addition, 

 the Moose Town population is immediately adjacent to a main road 

 and could be threatened by road construction. 



Element Name: Juncus hallii Engelm. 



Common Name: Hall's rush 



Range: Southwest Montana and southern Idaho south to Colorado. 

 In Montana this species is known from Madison, Meagher, Powell 

 and Silver Bow counties. 



Element Rank: G4G5/S2 



Federal Status: USFS Region 1 Sensitive 



Local Occurrence: I located one population of J^ hallii in the 



Moose Town area (Fig. 2) . Unfortunately I was unsure of the 



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