190 Trees with Compound Leaves. [D i 



Found. Native in the Alleghany Mountains from Penn- 

 sylvania (Monroe County Porter) to Georgia ; but 

 now very generally naturalized throughout the United 

 States east of the Rocky Mountains. 



A tree usually forty to fifty feet high, sometimes ninety 

 feet, and of rapid growth. Its wood is exceedingly hard 

 and strong, and remarkably durable when in contact with 

 the ground. It is used largely for posts, in ship-building, 

 and in turnery, and it is preferred to all other native wood 

 for treenails. It is one of the most valuable trees of this 

 or of any country. But its cultivation as a timber tree, 

 which at one time was very general, has nearly ceased in 

 the United States on account of the constant damage 



o 



done by the grub of the Painted Clytus (Clytus pictus). 

 This troublesome borer not only injures the new growth, 

 but also pierces and detaches large branches, leaving the 

 tree ragged and stunted. 



Clammy Locust. R. viscbsa, Vent. 



This species is native to the high ranges of the southern 

 Alleghany Mountains, but is now very widely cultivated 

 and sometimes naturalized in the Atlantic States. 



It differs from the common locust especially in its 

 smaller size, in having its leaf-stem and branchlets "sticky" 

 and slightly rough, and its flowers rose-tinted and scarcely 

 fragrant, and in close and erect bunches. 



Genus GYMNOCLADUS, Lam. (Coffee Tree.) 



Fig. 97. Kentucky Coffee Tree, Stump Tree. G. ftsicus (L.), 

 Koch. G. Canadcnsis, Lam. 



Leaves, UNEQUALLY TWICE-COMPOUND (odd- feathered ; leaf- 

 lets very numerous seven to thirteen on the different 

 branches of the main leaf-stem) ; ALTERNATE ; EDGE 



OF LEAFLETS ENTIRE. 



