| Betula
alleghaniensis
Britt. = B. lutea Michx. yellow birch Native |
                                      
|
| Betula
lenta
L. sweet birch, cherry birch, black birch Native |
                      
|
| Betula
nigra
L. river birch Watch-Listed |
                            
|
| Betula
papyrifera
Marsh. paper birch Native |
                           
|
| Betula
papyrifera x populifolia
paper birch x gray birch Native |
    
|
| Betula
pendula
Roth silver birch Introduced |
         
|
| Betula
pendula x populifolia
Native |
   
|
| Betula
populifolia
Marsh. gray birch Native |
                                     
|
| Betula
pubescens
Ehrh. European downy birch Introduced |
     
|
| Betula
pumila
L. swamp birch, fen birch Threatened |
       
|
| Betula
sp.
exotic birch Introduced |
|