454 PROCEEDINGS OF THE ACADEMY OF [Nov., 



many years, A feature of the Pine Barren flora, however, quite as 

 striking as the presence of these southern forms, and one upon which 

 Uttle stress has been laid, is the absence of very many widely distributed 

 species. 



In Dr. N. L. Britton's Catalogue of Plants jound in New Jersey many 

 common species are given as occurring "throughout the State" which 

 are entirely absent from the Pine Barrens. Another point of interest 

 is the fact that the Pine Barren flora does not cover the entire south- 

 eastern portion of the State. Along the whole seaboard back of the 

 salt meadows is a strip of varying width supporting a flora essentially 

 similar to that of West Jersey, and in the Cape May peninsula these 

 eastern and western strips join together almost to the exclusion of the 

 true Pine Barren flora, which occurs only in spots or islands south of 

 the Great Cedar Swamp. 



The southern portion of the Cape May peninsula, especially on the 

 Delaware Bay side, harbors qviite a number of plants that are 

 distinctly more southern than those of the Pine Barrens, and would 

 seem to constitute a tinge of the Austro-riparian zone, which normally 

 reaches its northern limit at the Capes of the Chesapeake. 



Some of these plants extend up into West Jersey and others up the 

 eastern coast strip a varying distance, but none of them into the Pine 

 Barrens. 



Opposed to these two southern elements we have three boreal 

 incursions into the southern New Jersey flora: First, certain bog 

 species of the Pine Barrens; second, a number of northern species 

 which occur in West Jersey, especially close to the edge of the Pine 

 Barrens, and, third, species which occur in the coastal strip and in the 

 wooded areas that are found here and there on the long narrow islands 

 that form the true sea beach of eastern New Jersey, frequently separ 

 ated by five or six miles of salt meadows or bays from the mainland. 



While not attempting in the present connection to correlate these 

 life-areas and boreal and austral incursions with conditions which 

 may have produced them, I mention below some of the more char- 

 acteristic species which distinguish them. 



I. The Pine Barrens. 



The characteristic trees of this region are in the dry portions Pinus 

 rigida, Quercus marylandica, Q. nana, Q. jninor, Q. prinus, Q. prinoides, 

 Sassafras sassafras. In moist spots Chanuvcyparis thyoides, Nyssa 

 sylvatica, Magnolia virginiana, Acer ruhrum, Betida populifolia. Char- 

 acteristic shrubs are Gaylussacia resinosa, G. frondosa, G dnmosa, 



