iQig] 



HARVEY— CONIFEROUS SAND DUNE 



423 



this respect. Associated species are Euphorbia polygonij'olia, 

 Taraxacum, Iris versicolor, Rhus Toxicodendron, Rubus sp., and 

 Ribes oxycanthoides, all of which occur sporadically. 



On the thickly wooded lea slope of these grassy dunes are found 

 numerous woody and herbaceous species. The most prominent 



Fig. 6. — Grassy foredune held by Poa conipressa, from north: middle beach and 

 naked spit seen to south; highland shown to south of South Pond (barely visible); 

 photograph by Dr. G. E. Nichols. 



species are Iris versicolor, Campanula rotundifolia, Vaccinium 

 Vitis-Idea, V. pennsylvanicum, Maianthemum canadense, Rhus Toxi- 

 codendron, Ribes, and Rubus. The occurrence of these forms is 

 sporadic. 



In some places this outer range of dunes passes toward the west 

 into low areas of considerable extent occupied by a unique associa- 

 tion (fig. 3, blank areas in dune complex). Its aspect is grassy, 



