DOUGLAS-FIR 



Pseudotsuga mucronata (Rafinesque) Sudworth 



The gknt Douglas-fir is an impressive tree wherever it reaches 

 its full development. It grows from eighty to two hundred feet in 

 height with a trunk two to eight feet in diameter, or sometimes 

 even larger. The rich green foliage, pointed buds, and beautiful pen- 

 dent cones distinguish it from its forest companions. The long bracts 

 are conspicuous on the cones, since they extend half an inch beyond 

 the scales. 



Douglas-fir is found from western Texas and northern Mexico 

 to California, British Columbia, and Alberta. 



The sketch was made from a specimen obtained near Radium 

 Hot Springs in the Columbia River Valley, British Columbia, at an 

 altitude of 3,000 ictt. 



PLATE irjO 



