206 THE BOOK OF FORESTRY 
THE ASPENS 
TREMBLING ASPEN BIG TOOTH ASPEN 
Populus tremulovdes Populus grandidentata 
Bark Bark 
Thin, bitter to the taste, pale| Smooth, light above, brown 
green or nearly white, often| near ground, no bitter taste. 
marked with circular bands of 
wart-like growths. Bark 1s 
quite dark near the ground. | 
LEAVES LEAVES 
Oval, pointed with small teeth. | Broadly oval, 3’-4” long with 
Stems flattened from side to| large teeth. 
side, causing the leaves to 
flutter in the slightest breeze 
RANGE RANGE 
From Hudson Bay to Alaska, to | Southern Canada to Northern 
Lower California. It 1s the} Minnesota. South along the 
most widely distributed tree} Appalachians to North Caro- 
in America. lina. 
The poplar family is composed of nine members be- 
sides the two described above. The trees are fast-growing 
and short-lived asa rule. On account of their light seed, 
liberated attached to flecks of down, they are earried 
long distances on the wind. In the North they are 
likely to form dense forests following extensive fires. 
Their rapid growth and the ease with which they may 
be reproduced from cuttings make them valuable to 
plant for wind breaks where quick protection is needed. 
