FIG. 16. Typical view in the sagebrush community. The chief plant is 

 the scab-land sage, Artemisia rigida. The hills in the background are 

 covered with bunch-grass. 



FIG. 17. A glimpse of the lichen-moss community. The black mats are 

 Grimmiamontana. Surrounding the base of the rocks a'nd extending along 

 the deeper crevices are patches of Tortula into which the June grass is 

 invading. 



