FLORA OF OAK ISLAND. 153 



TJrticacesB. 



TJlmus Americana, L. A few trees. Scattered. 

 Pilea puraila, Gray. Abundant in the western part. It all dried 

 up and disappeared before flowering. 



Cupuliferae. 



Carya alba, Nutt. Abundant. 



Carya tomentosa, Nutt. Scarce. Two or three trees only. 



Carya porcina, Nutt. Abundant. 



Carya amara, Nutt. The most abundant hickory. 



Quercus alba, L. Quite abundant. One of the largest trees ; 

 about fifteen inches in diameter, is a white oak. 



Quercus bicolor, Willd. Most abundant in the extreme eastern 

 part. 



Quercus coccinea, Wang. There is one tree which seems to be 

 intermediate between Q. coccinea and Q. rubra. It has the 

 acorn of coccinea and the leaf of rubra. The leaf is rather 

 small. 



Quercus tinctoria, Bart. One tree in the extreme southeastern^ 

 part. Identified by the fringed acorn and the bright orange 

 inner bark. 



Quercus rubra, L. Abundant. This species with bicolor con- 

 stitutes the greater part of the oaks. 



Corylus Americana, Walt. In the middle of the western part. 



Myricacese. 



Myrica cerifera, L. Not abundant. 



Betulacese. 



Betula alba, var. populifolia, Spach. A few small trees. 



Salicacese. 



Salix discolor, Muhl. A few bushes. 

 Salix humilis, Marshall. A few bushes. 



Populus grandidentata, Michx. Phis species and the next occur 

 together as small shrubs in the extreme southeastern part. 

 Populus tremuloides, Michx. 



Coniferse. 



Juniperus Virginiana, L. The only conifer. A few trees only. 



Aracese. 



Arissema triphyllum, Torr. Abundant. 



Naiadacese. 



Ruppia inaritima, L. In a pool of water near the island. 



ESSEX INST. BULLETIN, VOL. XIV. 10* 



