122 FOREST TREES. 
any other way. Stakes set in the ground close enough 
to form a fence will take root, and last till the trees 
become so crowded that a part will die. 
1. Populus monilifera— Cottonwood. 
3 Young branches slightly angled, becoming round ; 
leaves broadly deltoid, with spreading, prominent 
nerves, slightly heart-shaped or truncate at the base, 
taper-pointed, serrate; fertile catkins very long; 
scales fringed, not hairy. 
The Cottonwood grows in the Atlantic States, but 
is most common in the Mississippi valley, in which it 
is everywhere found along the banks of streams. It 
is often an annoyance to farmers, by springing up in 
cultivated grounds that are somewhat moist. It 
becomes a large tree, eighty feet high, or more. The 
wood is white and soft, and the fibres are usually so 
interwoven that it is very difficult to split it. It is 
sometimes sawed into planks and boards, but such is 
its disposition to warp that it is difficult to keep them 
in place when used. It is sometimes planted for shade, 
but is liable to the objection that it often casts its 
leaves before frosts occur. When planted near build- 
ings, only the male tree should be used; the female 
sheds its down in such quantities as to become a 
nuisance. 
2. Populus angulata—Angled Cottonwood. 
Branches, acutely angled or wimged ; leaves, broadly 
deltoid or heart-ovate, smooth, crenate, serrate, or 
with obtuse, cartilaginous teeth. 
