

DENDROLOGY. 



253 



so as to conceal the junction of the petiole. The aments are 

 drooping and about three inches long as those of the Carolinian 

 poplar. They put forth in the month of April. 



The wood of the cotton tree is soft, light, unfit for use, and 

 inferior to that of the white, the Virginian and the Lombardy 

 poplars. The heart is yellowish, inclining to red, and the young 

 branches are filled with a pith of the same color. It is 

 appropriated to no particular use in the arts or for fuel. 



Cotton Wood. PojjuIus canadensis. 



This species, like the 

 Virginian poplar, has long 

 been known in Europe. It 

 was probably introduced into 

 France from Canada; such 

 at least is its origin indicated 

 by the name of Canadian 

 Poplar. M This tree grows 

 in the upper part of the state 

 of New York on the banks 

 of the river Genessee which 

 empties into Lake Ontario, 

 in some parts of Virginia 

 and on several islands of the 

 Ohio. It is generally found 

 on the margin of rivers in a 

 fat, unctuous soil, exposed 

 to inundation at their overflowing in the spring. 



On the banks of the Genessee, where the winter is rigorous, 

 the cotton wood is 70 or 80 feet in height and three or four feet 

 in diameter. The leaves are deltoid, or trowel-shaped, ap- 

 proaching to cordiform, always longer than they are broad, 

 glabrous and equally toothed : the petioles are compressed and 

 of a yellowish green, with two glands of the same color at the 

 base : the branches are angular, and the angles form whitish 

 lines, which persist even the adult age of the tree. The female 



PLATE LXX. 

 Figure 1. A leaf. 



