76 The Farm Woodlot 



The poplars. Figs. 19, 20, 21 



The genus Populus, or the poplars, is a group of trees not 

 very well understood by the layman. They are commonly 



FIG. 19. Trembling aspen or popple (Populus 

 tremuloides) . 



known as the cot ton woods or the aspens. To this group 

 belong such trees as the Norway poplar and the North 

 Carolina poplar. These are varieties of the common 

 cottonwood or Populus deltoides. The poplars must not 



