FIG. 22. Minor quadrat in the Festuca consociation. The conspicuous 

 plants are Balsamorhiza sagittata, Hieracium scouleri, and Festuca ovina 

 ingrata.. 



FIG. 23. Yellow pines invading a protected north slope under cover of 

 the ninebark, Opulaster pauciflorus. The exposed south slope is covered 

 with prairie, tongues of which extend down the dry ridges shown in the 

 picture. 



