i 7 6 



IDecifcuous {Trees. 



Caucasian Walnut, Pterocaria caucagica, is a beautiful 

 hardy tree with broad, spreading crowns, and much smaller 

 than the hickories and walnuts. It has long pinnate leaves 

 of a glossy green with about nineteen leaflets. The fine 



<?fWS 



FIG. 89. CAUCASIAN WALNUT (PTEROCARIA CAUCASICA). 



specimen illustrated grows in 56 N. latitude in Sweden on 

 moderately high, fertile ground. This is the most ornamen- 

 tal tree of the walnut family. 



THE OAK FAMILY. 



Oak, Quercus. The oaks are among our most beautiful 

 trees and very plentiful in American woods ; in fact, they 

 form the main body of most mixed woods, both here and 

 in Europe. The American forms grow more rapidly than 



