OF ORNAMENTAL TREES. 235 



will be quite green while the rest are of a 

 bright-yellow. The white linden should be in 

 every collection. 



ULMUS, Linnceus. Nat. Ord. Ulmaceae. 

 Pentandria, Digynia, Linn. Calyx 5-8- cleft, 

 permanent. Corolla none. Stamens equal 

 to the divisions of the calyx. Fruit a one- 

 celled, one-seeded samara. 



1. U. AMERICANA, Linn&us. Leaves smooth 

 above, oblong ovate, unequal at the base, 

 equally and sharply serrate. Flowers pedi- 

 cellate. Fruit oval, downy at the margin. 

 American elm. 



This fine tree is very popular in many of 

 the Northern States, and deservedly so, for 

 few trees can compare with it in the easy 

 gracefulness of its appearance. It likes not 

 to be crowded by other trees, always in that 

 case losing considerable of it beauty. It is 

 essentially a round-headed tree, and, when 

 old, frequently becomes quite pendulous. It 

 is not at home in wet situations, thriving only 

 in light loose loams. In our district it is so 

 very liable to be preyed upon by insects, that 

 it has lost much of its interest. It will some- 



