24 University of Michigan 



ROCK OUTCROPS (TABLE v) 



Habitat 36. Qiiinnesec Schist. Along- the high banks of the 

 river, in the preceding habitat, dead leaves and humus, thickly 

 overgrown with bearberries {Arctostaphylos uvaursi), had 

 collected in the crevices and hollows of the rocks. These 

 places were further protected by scattered trees of white birch 

 {Betula alba papyrifera) , silver maple, poplars {Populus tre- 

 muloides and grandidentata) , arbor vitae and hemlock. New 

 Jersey tea (Ceanathus americanus), broken fern and sumac 

 were also abundant along the edge of the outcrop, but were 

 rarely found on the rocks themselves. 



Habitat 57. Sturgeon Quartzite Cliffs. Along Fern Creek 

 this rock forms quite a steep, white cliff. The dry soil in the 

 crevices under and between the loose rocks on the steep slope 

 provide rootage for a considerable abundance of dwarf honey- 

 suckle (Diervilla lonicera), miterwort (Mitella diphylla), 

 grass, and patches of wild strawberries {Fragaria virginiana) ; 

 these, with a single large maple {Acer saccharum), scattered 

 saplings of basswood and elm, and sumac and hazel, formed 

 its only covering. 



SANDY, OUTWASH PLAINS (TABLE v) 



Habitat 38. Pine and Second Growth. In the valleys of 

 the rivers and streams, except in those places which were cov- 

 ered with alluvial and peaty deposits, rather extensive out- 

 wash plains extended from the higher, clayey moraines. These 

 had been covered with white and red pine {Piwis strobus and 

 resinosa) and their accompanying floras, but were almost 

 entirely deforested. Those portions which had not suffered 

 during the fires of the preceding year were usually grown up 

 with poplars (Populus tremuloides, grandidentata and less 



