1907.] 



NATURAL SCIENCES OF PHILADELPHIA. 



457 



There are also a great nuniljer of plants common to tliis rejiion and the 

 iijiland and not found in the Pine liarreus. The difference in the flora 

 of the two regions, as already stated, is due quite as much to the absence 

 of these plants as to the presence of peculiar southern species. 



A few of the commoner members of this group are 



Spathyema foetida 

 Arisama triphyllum 

 Erythronhnn virgimcum 

 Anemone nemorosa 

 Ranunculus ahortivus 

 Ra7iunciilus fascicularis 

 Ranunculus recurvatus 

 Thalictrum polygamum 

 Caltha palustris 

 Viola cucullata 



Viola papilionacea 

 Viola sagittata 

 Asclepias pulchra 

 Lobelia cardinalis 

 Hieracium giganteum 

 Eupatorium purpureum 

 Eupatorium perfoliatum 

 Vernonia noveboracensis 

 Senecio aureus 



The narrow Atlantic coast strip has practically the same flora as the 

 lower Delaware Valley, though many of the trees are absent. 



The northern incursions into this flora are as follows, most of them 

 local and some of them rare : 



In West Jersey: 



Filix fragilis 

 Ackea alba 

 Polygonum careyi 

 Pyrola secunda 

 Pyrola chloraniha 



In Bogs: 

 Carex fusca 

 Menyanthes trifoliata 



On the Coast Strip: 

 Sevastana odorata 

 Triglochin maritima 

 Sabbatia angularis 



On the Coast Islands: 

 Geranium robertianum 



Vaccinium pennsylvanicum 

 Rhododendron maximum 

 Ilicioides mucronata 

 Pedicularis lanceolata 



Scheuchzeria palustris 



Limosella tenui folia 

 Trientalis americana 

 Lacinaria spicata 



Salmonia stellata 



Among southern species which reach the lower Cape May peninsula 

 and push northward either in West Jersey or along the coast strip may 



