THE SHRUBS OF NORTH CAROLINA. 177 



Polygonella. In the sandy Barrens about 

 Wilmington. 



It may be interesting to append here a comparative 

 view of the Flora of North Carolina with that of the 

 Northern and Southern States east of the Mississippi. 

 In Prof. Gray's " Manual of Botany," which includes 

 the States north of North Carolina and Tennessee, 

 I find described 130 Trees, 183 Shrubs, and 30 Vines. 

 In Dr. Chapman's " Flora of the Southern States " 

 are described 126 Trees, (of which there are 112 in 

 North Carolina,) 224 Shrubs, (176 of them in North 

 Carolina,) and 46 Vines (32 in this State). 



