54 



The Plant World. 



cranberry (V actinium macrocarpon) (C), cotton sedge (Erio- 

 phorum virginicum) (V), and the sundew (Drosera intermedia) 

 (D). Such a sphagnum fringe is found only on the north, east 

 and west sides of the pond. Sometimes a stiff sedge together 



with the sundew (Drosera rotundi folia) (R), and pitcher plant 

 (S) occur also in this outer circumarea. On the shoreward side 

 of this sphagnum circumarea occurs a well defined fringe of the 

 shrubby leather-leaf (Chamaedaphne calyculata) (Figure 1, +) 



Fig. 2. Vertical section (diagramatic) of Half Moon Lake. 



