Yellow Birch, Gray Birch 



Betula lutea Miclix. f. 



1. A twig showing pistillate and staminate 



aments x % 



2. Bract and bracteoles from staminate 



anient, distal view x 7% 



3. Staminate flowers with subtending bracts 



and sepals, axile view x TV^ 



4. Bract and bracteoles showing styles, 



al>axile view x 7% 



."). IMstillate flowers with subtending bracts, 

 axile view x 7% 



0. A twig showing mature leaves and fruit- 

 ing strobiles x % 



T. Scale from fruiting strobile, abaxile view 

 X 2 



S. Winged nutlet x 4 



9. Winter twig with staminate aments x lU 



