70 THE PLANT LIFE OF MARYLAND 



respectively to the Alleghanian, Carolinian and Louisianian Zones of 

 Verrill and to the Transition, Upper Austral and Lower Austral 

 Life-zones of Merriam. 



Not only are there species present in the Coastal Zone and in the 

 Mountain Zone which are absent from the Midland Zone, but there 

 are species present, in the Mountain and Midland Zones which arc 

 absent from the Coastal Zone and others present in the Coastal and 

 Midland Zones which are absent from the Mountain Zone. While 

 these Zones are based primarily on floristic distinctness, there arc 

 nevertheless ecological features characteristic of each, of which men- 

 tion will be made later. 



The species which are found only in the Coastal Zone in Maryland 

 are the following-, halophytes being omitted : 



Woodwardia virgin tea 

 Woodivardia areolata 

 Lycopodium inwndatum 

 Pinus taeda 

 Taxodium distichvm 

 Chamaecyparis thyoide* 

 Typha angvsti folia 

 Sagittaria lancifvlia 

 Sagittaria mbulata 

 Erianthus compactus 

 Panicum digitarioides 

 Zizania aquatica 

 Uniola lax a 

 Arundinaria tec In 

 Cyperus pseudovegetus 

 Cyperus retrofractus 

 Cyperus cyUndricns 

 Cyperus grayi 

 Kyllinga pumiln 

 Scirpus cylindricus 

 Scirpus fiuviatilis 

 Fuirena squarrosa var. liispida 

 Rynchospora corniculata 



