574 



ZONES AND REGIONS [Pt. Ill, Sect. II 



The summer-green broad-leaved forest of the Mississippi and of the 

 Atlantic plain (4 on Map 4) is by no means destitute of conifers; indeed 

 many species, for instance Juniperus virginiana, here attain their richest 

 development. Characteristic in the first place, however, are extensive 



Fig. 317. Pinus palustris, Mill. (P. australis, Michx.), in North Carolina. After Ashe. 



communities of broad-leaved trees, in which the great majority of the 

 numerous and characteristic species of North America find their exclusive 

 or principal home and occur in the richest profusion. Luxuriant large- 



