194 Trees with Compound Leaves. [D i 



Outline of leaflet, long oval or long egg-shape. Base 

 and narrowed Apex, rounded. 



Leaf-stem and very short Leaflet-stem, downy. 



Leaflets, three fourths to one and a half inches long ; 

 about one third as wide. Often several of them 

 (one to three) are partly or wholly divided into 

 smaller leaflets. Surfaces smooth and shining. 



Bark of trunk, gray, and much less rough than that of 

 the common Locust (which has a somewhat similar 

 leaf) ; branchlets brown and often warty. The 

 branches and the trunk, excepting in very young 

 and in quite old trees, are usually thickly covered 

 with spines, two to four inches long, which are 

 curved at the base, often two- or three-branched, and 

 of a reddish-brown color. 



Flowers, small and greenish. 



Fruit, a long, flat pod (nine to eighteen inches long), 

 reddish ; somewhat twisted, and filled between the 

 seeds with a pulp which at first is sweet (whence the 

 name " Honey " Locust) but which soon becomes 

 sour. The seeds are flat, hard, and brown. 



Found, native in Pennsylvania, westward and southward, 

 but also somewhat naturalized and widely introduced 

 northward. 



A tree sometimes seventy feet high, with wide-spread- 

 ing and graceful branches, and light and delicate foliage. 

 It is often used as a hedge plant. 



A variety entirely bare of thorns (var. inermis) is 

 sometimes found ; also a variety (var. br achy car pos) 

 with shorter fruit and thorns. 



NOTE. See Poison Sumach (R. venenita D. C.), with its species, under D, //., 

 page 198. 



