44 Trees with Simple Leaves. [AII 



Genus ULMUS, L. (Elm.) 



Fig. 22. White Elm. U. Americana, Z. 



Leaves, SIMPLE ; ALTERNATE ; EDGE SHARPLY AND OFTEN 



. DOUBLY TOOTHED. 



Outline, oval or egg-shaped, or inversely egg-shaped; 



always one-sided. 

 Base, rounded, or slightly heart-shaped, rarely pointed. 



Apex, taper-pointed. 



Leaf-stem, about one quarter inch long. Buds, smooth. 

 Leaf, usually two to five inches long, and one and a half 



to two and a half wide ; somewhat downy when 



young, afterward roughish below ; above, either 



rough in one direction, or (especially if taken from 



the ends of the long branches) smooth and shining. 



The ribs prominent and straight. 

 Bark of the branches not marked with " corky ridges " ; 



branchlets, smooth. 

 Seeds, flat egg-shaped or oval, winged and fringed all 



around. Last of May. 

 Found, northward to Southern Newfoundland ; southward 



to Florida; westward to the Black Hills of Dakota. 



Toward the western and southwestern limits it is 



found only in the river-bottom lands. 

 One of the very noblest of American trees, eighty feet 

 or more in height, and of strong and graceful proportions. 

 The trunk divides at a slight angle into two or three arch- 

 ing limbs, and these again into many smaller curving and 

 drooping branches. The trunk and the larger branches 

 are often heavily fringed with short and leafy boughs. 



The tree is widely cultivated. Streets planted with it 

 become columned and arched like the aisles of a Gothic 

 cathedral. 



The wood is hard, and very tough from the interlacing 

 of its fibres. It is used in making saddle-trees and for 



