70 REPORT O'F NEW JERSEY STATE MUSEUM. 



Cyperus grayi. Arenaria caroliniana. 



filiculmis macilentus. Lechea racemulosa. 



Carex umbellata. Euphorbia ipecacuanhae. 



Hudsonia ericoides. Cracca virgmiana. 



The Cedar swamps (see PI. CXXVII) which line all the 

 streams of the Pine Barrens possess quite a dififerent flora, some 

 of the characteristic species being : 



Chamaecyparis thyoides. Rhus vernix. 



Magnolia virginiana. Carex folliculata. 

 Acer rubrum carolinianum. " trisperma. 



Clethra alnifolia. Drosera rotundifolia. 



Nyssa sylvatica. Osmunda cinnamomea. 



Alnus rugosa. Vaccinium corymbosum. 

 Ilex glabra. '" atrococcum. 



Viburnum nudum. Azalea viscosa. 



The natural open bogs are characterized by the presence of 

 such species as: 



Oxycoccus macrocarpon. Eriocaulon decangulare. 

 Sarracenia purpurea. " compressum. 



Orontium aquaticum. " septangulare. 



Castalia odorata. Drosera longifolia. 



Nymphsea variegata. Polygala lutea. 



Utricularia spp. Blephariglottis blephariglottis. 

 Pogonia ophioglossoides. " cristata, etc. etc.* 



Limodorum tuberosum. 



The curious elevated tract known as the Plains (see PI. 

 CXXVIIL), which covers portions of Burlington and Occcin 

 Counties, presents a stunted vegetation scarcely higher than one's 

 knees, consisting mainly of Pinus rigida, Quercus niarilandica 

 and Q. ilicifolia, but with all the characteristic species of the open 

 pine woods. The additional species more or less peculiar to the 

 Plains are Corema conradii and Arctostaphylos uva-ursi. 



* The above lists are by no means exhaustive, and are simply given to call 

 attention to some of the dominant or more conspicuous species of the several 

 types of environment to be found in the Pine Barrens. No attempt has been 

 made toward an "ecological" study of the region. While much valuable work 

 has been done along true ecological lines, a certain amount of discredit 

 appears to have been thrown upon the term by the fragmentary and super- 

 ficial work presented under this title by certain writers. The hasty division 

 of a flora into various societies and associations is a case in point. To my 

 mind the only proper basis for work of this kind is the detailed study of a 

 number of similar spots in a given area, such as the various patches of 



