Fic. 22. Minor quadrat in the Festuca consociation. The conspicuous 
plants are Balsamorhiza sagittata, Hieracium scouleri, and Festuca ovina 
ingrata. 
Fic. 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. 
