﻿Gray Birch, Old Field Birch, White Birch 



Betula i)opulifolia Marsh. 



1 A 



twi.i; sliowins pistillate and staminate 



lU-act and bracteoles from staminate ament 

 showing stamens, distal view x 5 



Staminate flowers with siibtendlng bracts 

 and sepals, axile view x 5 



Bract and bracteoles from pistillate ament 

 showing styles, abaxile view x 15 



Pistillate flowers with subtending bracts, 

 axilo view x l.j 



A twig showing mature leaves and fruit- 

 ing strobiles x % 



Scale from fruiting strobile, abaxile view 5 



Winged nutlet x iO 



Winter twig x Va 



