BIRCHES. 



207 



Plate 27. Betula lutea. Yellow Bireh. 



cl. Flowering branch, one-half natural size. 2. Staminate flower, enlarged. 3. 

 Pistillate flower, enlarged. 4. Fruiting branch, one-half natural size. 5. Nut, 

 enlarged. . Scale of fruiting catkin, enlarged. 7. Winter branch, showing 

 staminate catkin, one-half natural size. 



