wintergreen, dwarf huckleberry, blue huckleberry, myrtle 

 huckleberry and grouse v;hortleberry. 



Spruce-lodgepole pire forest . This type is found en north-facing 

 slopes ard alcxg streams from 1600 to 2100 m on East Butte cxily. 

 Lodgepole pine ard spruce dcminate a sparse understory similar in 

 ccmpositicn to the lodgepole pine forest. 



Temperate subalpire fir forest . Subalpine fir and spruce dcminate 

 steep, shady north-facing slcpes from 1650 to 1800 m above Rittocn 

 Gulch (west side of East Butte). This unusually low-elevation 

 oocurrence of subalpine fir rray be due to cold air drainage down 

 the canycn. Scattered lodgepole pine and Douglas-fir are found in 

 the type. Tne understory includes Rocky fountain maple, harebell, 

 fireweed, twinflower, one-flowered wintergreen, russet 

 buffaloberry and grouse whorU-eberxy. 



Subalpine forest . V/hitebark pine is a major conpcrient of forests 

 near the sunmits of Nfeunt Brcwn and Mount Royal. Lodgepole pine, 

 limber pire, spruce, and, en the north face of Mount Brown, 

 subalpine fir also occur. These stands are apparently above the 

 cold limits of Dcxiglas-fir. VJhitebark pine and lodgepole pine 

 dominate forest stands at timber line en the summit of Vtest Butte. 

 On Vfest Butte, subalpine fir is found only en the dry, rocky ridge 

 south of the summit, v^-^ere its stunted, wind-blo^sTi form resembles 



17 



