TREES OF MINNESOTA. 



Plate 25. Populus alba. White Poplar. 



i. Flowering branch from staminate tree, one-half natural size. 2. 

 Flowering branch from pistillate tree, one-half natural size. 3. Scale of 

 staminate catkin, enlarged. 4. Scale of pistillate catkin, enlarged. 5. Sum- 

 mer branch, one-half natural size. 6. Fruiting branch, one-half natural 

 size. 7. Winter branchlet, one-half natural size. 8. Seedling. 



