26 



BULLETIN 816, U. S. DEPARTMENT OF AGRICULTURE. 



HONEY LOCUST. 



The honey locust ^ is a large, open, round-headed, fine-f oliaged tree, 

 admitting much light through its top, (Fig. 19.) The common 

 form, has stiff spines 2 to 6 inches long, or even longer. There is also 

 a form without spines, which is the one that should be used for street 

 planting. It is a useful tree in regions 1, 2, 3, 9, 10, and 11, but is 

 especially valuable for planting in regions 6, 7, and 8, and may 

 prove useful in region 5. 



Fig. 19.— a street shaded with honey locusts, as seen in late summer. Washington, D. C. 



HORSE-CHESTNUT. 



The horse-chestnut ^ has handsome blossoms that are very showy, 

 and when in bloom an avenue of these trees commands attention. 

 It is a close relative of the buckeye, or Ohio buckeye, which is also 

 a handsome tree, though less desirable. It is objectionable because 

 it is hkely to be broken by boys clubbing it for its nuts, which are 

 inedible, or where its leaves are affected with a midsummer bhght 

 which makes it unsightly during the remainder of the season. It is 

 a medium-sized round-headed tree that does much better under 

 surburban than under city conditions. It thrives in regions 1, 2, 

 3, and 10. 



1 Gleditsia triacanthos L. 

 ^Aesculus hippocastanum L. 



