H>ecitwou8 Urees. 175 



irregularly rounded, somewhat broader at the base than at 

 the top, with beautiful effects of light and shade. The 

 stem is grayish and, in places where the old bark strips off, 

 silvery white. The Oriental plane (PI. orientalis) has 

 leaves more lobed and also broader crowns than the 

 American plane (PI. occidentalis). The sycamore is com- 

 mon on the river-banks and in low fertile soil. While 

 small it is a most beautiful tree for any garden, but being 

 of rapid growth it will in time grow too large for smaller 

 grounds. Under cultivation it thrives in any moderately 

 good soil. 



THE WALNUT FAMILY. 



Walnut, Juglans. These are large trees, with spread- 

 ing, rounded crowns and fine pinnate leaves. They are 

 all ornamental, especially when young ; grand and fin- 

 posing when old. The English walnut is chiefly planted 

 for the sake of its well-known fruit. The black walnut is 

 a large American tree, and the butternut ( J. cinerea) a 

 somewhat smaller but ornamental species. The walnuts 

 prefer rich soil with a light and open subsoil. 



Hickory, Carya. The hickories are large and beautiful 

 trees with more elongated crowns than the walnuts. The 

 leaves are long, pinnate. They are all well-known Ameri- 

 can trees common in deep and fertile soil. The butternut 

 (6! amara), the water hickory (C. aquaticd), and pecan-nut 

 C. olivceformis) delight in low alluvial soil along rivers arid 

 swamps. The shellbark hickories (C. alba, C. sulcatci) grow 

 on higher ground in rich woods. 



