species (primarily Kentucky bluegrass, 28), Columbia brome ( Prcmu s 

 Vlil peris , 6), elpine timothy (3) and Idaho fescue (2). Forb cover was 

 very high on these mesic sites, averaging 99 percent (stratified 

 cover). Dominant forbs were diverse-leaved cinquefoil (24 percent 

 cover), common dandelion (20), bistort (15), Virginia strawberry 

 ( pragaria vi roinie na, 7), common yarrov (7), orange arnica (6), rose 

 pussytoes ( Antennaria microphvlle , 4) and little buttercup ( Ranunculus 

 u ncinatus , 3). Seven other forbs averaged one to two percent cover 

 (Table 2). Shrubby cinquefoil ( Fotentil la f ruticos? ) averaged 13 

 percent cover end 25 percent frequency of occurrence. 



Annuel production dete for the Pot fru/Fes sea habitat type are limited 



in western Montana (Table 3). Mueggler and Stewart (1980) reported a 



2 

 production ranee of 103.1 to 198.8 grams/rreter , of which less than 10 



percent is normally shrub production. 



The Pot fru/Fes sea habitat type occurred on the Ac gravelly silty loam 

 soil, 15-50 percent slope. 



Si tie Alder (Aln sin) Community Type . The Aln sin comrrunity is 



apparently serai to mesic, cool subalpine fir types where the conifer 

 overstory is absent. These sites include small portions of the Abi 

 las/Aln sin, Abi las/Lin bor end Abi las/Men fer habitat types. The 

 Aln sin community is mapped as minor inclusions in these habitat types 



18 



