282 



OHIO BIOLOGICAL SURVEY 



to the flora of the rocks. In one place the rock may be occupied by a 

 given set of plants, while in the next hollow, under entirely similar 

 conditions, different plants appear. This is well illustrated by the 



Fig. 19. The Cliff at the Head of "The Gulf." 

 The figure at the top gives the scale. For list of vegetation see page 283. 



distribution of Asplcnium montanum within the region. It was first 

 found for a few rods along a cliff at Sugar Grove; it has been found 

 at the mouth of Clear Creek, again on Little Rocky branch and at 



