122 TREES GROWING IN MOIST SOIL. 



CORKY WHITE ELJ1. ROCK ELM. HICKORY ELH. 



(Plate L VII.) 

 Ulmus racembsa. 



FAMILY SHAPE HEIGHT RANGE TIME OF BLOOM 



Elm. Head, round-topped; %o-ioo feet. New England southward April. 



branches, rigid. and westward. Fruit: June. 



This species of elm might readily be mistaken for Ulmus 

 Americana as in general characteristics there is much that is 

 similar between the two. The marks of distinction, however, 

 are that the young branches of Ulmus racemosa are pubescent, 

 and as they grow older they develop large, corky wings. The 

 fringed bud-scales are more often than not covered with a soft 

 down, and the flowers grow in a raceme. The leaves, too, have 

 many fine hairs on the upper surface and are not so noticea- 

 bly serrate as those of Ulmus Americana. In the autumn its 

 foliage turns a bright yellow. The tree inhabits low grounds 

 where a heavy, wet clay soil prevails ; or it flourishes in gravelly 

 uplands and on the high bluffs of rivers. It grows slowly, and 

 its wood, although valuable, is threatened by extinction. While 

 it has been neglected by planters, the axe has sought it with dili- 

 gence. In the forests of Canada and North America most of 

 the large trees have already been felled. 



U. alata, winged elm, Wahoo, is a comparatively small tree, 

 forty or fifty feet high, with an open, round-topped head and 

 slender branches, which are mostly covered with corky ridges. 

 The leaves are somewhat rough on the upper surface and 

 especially pubescent along the under veins. The samaras, also, 

 are pubescent and are densely fringed on their margins. In 

 wet, gravelly, or dry soil, the tree is known to grow. It in- 

 habits the country from Virginia to Illinois and southward. 



5LIPPERYELM. MOOSE ELM. RED ELM. (Plate L VI II.) 



iJlmus fitlva. 



FAMILY SHAPE HEIGHT RANGE TIME OF BLOOM 



Elm. Head) broad, flat; 6070 feet. Quebec and New England March, April, 

 branches, spreading. southward and westward. Fruit: May. 



Bark: reddish brown; rough. Branches: bright green when young, and 

 turning to light grey ; very rough, although not having corky wings. Inner 



