22 



BULLETIN 232, U. S. DEPARTMENT OP AGRICULTURE. 



COTTONWOOD. 



Cotxonwood lumber is cut from a group of trees which are known 

 under various names in the regions where they grow. Among them 

 are the common cottonwood, balm of Gilead, and aspen or popple, 

 which are the most important east of the Rocky Mountains, and 

 black cottonwood on the Pacific coast. 



Common cottonwood (Populus deltoides) furnishes the bulk of the 

 lumber. It is found in the whole country east of the Rocky Moun- 

 tains and is lumbered in all parts of its range. 



Swamp cottonwood (Populus lietrophylla) is best developed in the 

 lower Mississippi Valley States, but it grows naturally in the Atlantic 

 States and in the Ohio Valley. 



Aspen or popple (Populus tremuloides) is often designated as poplar 

 in the Lake States, where much of it grows. It is found growing 

 in various localities from Maine to California and far northward in 

 British America. Saw logs cut from aspen are usually small. 



Large-toothed aspen (Populus grandidentata) is not usually dis- 

 tinguished from the other. It ranges from Nova Scotia to Minne- 

 sota and along the mountains to Tennessee and North Carolina. 



Balm of Gilead (Populus balsamifera) is commonly known as balm 

 in the factory and lumberyard. Its range includes Maine and 

 Oregon and most of the States between, and also a large part of 

 British America. 



Western or black cottonwood (Populus trichocarpa) ranges near 

 the Pacific coast from Alaska to southern California. It is the 

 largest of the cottonwoods. 



Small quantities of lumber are cut from two foreign cottonwoods 

 which have been introduced hi this country, the white poplar (Popu- 

 lus alba), also called silver and English poplar, and the black or 

 lombardy poplar (Populus nigra). 



Table 24. — Cottonwood lumber sawed. 



State. 



Number 

 of active 

 mills re- 

 porting. 



Quantity 

 (M feet 

 b. m.). 



Per cent 

 of distri- 

 bution. 





1,004 



208, 938 



100.0 









48 

 39 

 29 

 21 

 96 

 11 



103 

 79 

 45 

 20 

 3 

 13 



497 



0)1,345 

 58,395 

 23, 126 

 12,814 

 8, 186 

 7,425 

 7,175 

 4,575 

 3,095 

 2,634 

 2,896 

 2,006 

 16, 206 



29.4 





27.9 





11.1 





5.9 





3.9 



Texas 



3.5 





3.4 





2.2 





1.5 



Oklahoma 



1.3 



Florida 



1.1 



Kentucky 



1.0 



All other States " '. 



7.8 







i Includes establishments distributed as follows: Alabama, 2; Colorado, 2; Connecticut, i: Georgia, 2; 

 Idaho, 4; Illinois,::?; Indiana, 38; Kansas, I; Maine, 29; Maryland, I ; Massachusetts, 7: Montana,. r >; Nebraska, 

 2; New Hampshire, 13; New York, 202; North Carolina,':!: Ohio, 30; Oregon, 3; Pennsylvania, 3; South 

 Carolina, 4; Utah, 5; Vermont, 48; Washington, 3; and Wisconsin, 40. 



