TREES HAVING SIMPLE LEAVES 



107 



use except for fuel and paper pulp, but there the like- 

 ness ends. 



To this family belongs the quaking aspen, whose 

 leaves are continually trembling, in fact, the whole 

 family is a restless one, the constant motion being due 

 to the shape of the long stems, which are flattened. 



The people of Scotland have a 

 superstition that it was of aspen //( 



Aspen 



FIG. 117 



Aspen Poplar, 

 or Large-Toothed Aspen 



wood that our Saviour's cross was made, and that the 

 tree shivers in constant remembrance of that fact. 



Beside the quaking aspen is the large-toothed aspen, 

 the Lombardy poplar, and the cottonwood. 



