in seep areas. Arnica cordif olia and Antennaria racemosa were 

 common ground layer plants. 



(12) Abies las iocarpa / Arnica cordifolia h.t. 



North and east-facing slopes between 7,000 ft and 8,000 ft 

 support forests dominated by Pinus contorta , Pseudotsuqa 

 menziesii , Abies lasiocarpa and Picea enqelmannii . Steep slopes 

 and poorly developed soils commonly underlie these sites. 

 Juniperus communis , Shepherdia canadensis and Physocarpus 

 malvaceus were common shrubs. Arnica cordifolia and Antennaria 

 racemosa were common members of the sparse ground layer. Abies 

 lasiocarpa / Vaccinium scoparium usually occurs upslope and along 

 drainage courses, while Pseudotsuqa menziesii sites occur below. 



(13) Pseudotsuqa menziesii / Physocarpus malvaceus h.t. 



Foothills between 6,500 and 7,000 ft on the north and east 

 sides of the Line Creek Plateau support forest stands dominated 

 by Pseudotsuqa menziesii and Pinus contorta . The under story was 

 dominated by Physocarpus malvaceus and Juniperus communis . Other 

 common shrubs included Spiraea betulif olia , Rosa acicularis and 

 Shepherdia canadensis . Common forbs were Aster conspicuous . 

 Arnica cordifolia , Antennaria racemosa Clematis columbiana , and 

 Viola canadensis . This habitat type is common on limestone- 

 derived soils on the east side of the Line Creek Plateau but is 

 rare on the crystalline-derived soils found on the north side. 



(14) Pseudotsuqa menziesii / Juniperus communis h.t. 



This habitat type is found on cool and warm slopes at 6,500- 

 8,4 00 ft on the north and east sides of the Line Creek Plateau. 

 Stands were dominated by Pseudotsuqa menziesii and Pinus 

 contorta . Pinus f lexilis was common in serai stands at lower 

 elevations on the east side of the study area. The shrub layer 

 was dominated by Juniperus communis with minor amounts of Spiraea 

 betulif olia . Arnica cordifolia and Antennaria racemosa were 

 common ground layer species. Low-elevation serai stands often 

 have many components of the Pinus f lexilis / Festuca idahoensis 

 type, but Pseudotsuqa menziesii is the indicated climax. This is 

 the most common lower montane habitat type in the study area. 



(15) Pinus f lexilis / Festuca idahoensis h.t. 



Foothills along the east slope of the Line Creek Plateau at 

 6,200-7,200 ft have soils derived from limestone and support 

 savannah dominated by Pinus f lexilis . Juniperus scopulorum and 

 Pseudotsuqa menziesii were present in some stands. Artemisia 

 tridentata and Juniperus horizontalis were the common shrubs. 

 Festuca idahoensis , Agropyron spicatum and Koeleria cristata were 

 abundant. Balsamorhiza incana , Cerastium arvense and Antennaria 



