ANGIOSPERM TREES 



293 



corded. In forest grown trees, the trunk may rise sixty feet before 

 branching. It makes its best growth on moist, well-drained bot- 

 tom-land soils, although it grows commonly in a great variety 

 of situations from swampy areas to dry hilltops. As an ornamental 

 and shade tree, it has been more widely planted in the east than 

 almost any other kind of tree. At present the existence of our 



Fig. 210. — The elm is a graceful deciduous tree of wide range in the United 

 States. Its deliquescent habit is typical of most Angiosperm trees. 



American elm is being threatened by an introduced fungus 

 disease, the Dutch Elm Disease which, if not eradicated, may 

 deprive future generations of this tree both as an ornamental and 

 as a timber producer. 



The SLIPPERY, or red elm, is similar in general appearance to 

 the white elm, but tends to have the lower part of the trunk more 

 clear of branches. It is a smaller tree than white elm, and may be 



