| Betula
alleghaniensis
Britton = B. lutea Michx. yellow birch Native |
                                                     
|
| Betula
cordifolia
Regel = Betula payrifera var. cordifolia (Regel) Fern. heartleaf paper birch, mountain paper birch Watch-Listed |
     
|
| 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 Marsh. × B. populifolia Marsh.
paper birch × gray birch Native |
              
|
| Betula
pendula
Roth silver birch Introduced |
           
|
| Betula
pendula × B. populifolia
European silver birch × American gray birch Introduced |
   
|
| Betula
populifolia
Marsh. gray birch Native |
                                                
|
| Betula
pubescens
Ehrh. = B. alba L. pro parte European downy birch Introduced |
     
|
| Betula
pumila
L. swamp birch, fen birch Threatened |
       
|
| Betula
sp.
exotic birch Introduced |
         
|