54 



TREES OF NORTH AMERICA 



high mountain ranges of British Columbia and Alberta, and southward along the Cas- 

 cade Mountains of Washington and Oregon to the neighborhood of Crater Lake, over 



Fig. 54 



the mountain ranges of eastern Washington and Oregon, and of Idaho, Wyoming, Colo- 

 rado, and Utah to the San Francisco peaks of northern Arizona, and on the Sandia and 

 Mogollon Mountains of New Mexico. 



Occasionally planted as an ornamental tree in the northern United States and in northern 

 Europe, but of little value in cultivation. 



i ' 

 4. Abies grandis Lindl. White Fir. 



Leaves thin and flexible, deeply grooved very dark green and lustrous on upper sur- 

 face, silvery white on lower surface, with two broad bands of 7-10 rows of stomata, on 

 sterile branches remote, rounded and conspicuously emarginate at apex, l'-2j' long, usu- 



Fig.55 



ally about |' wide, spreading in two ranks nearly at right angles to the branch, on cone- 

 bearing branches more crowded, usually l'-lf long, less spreading or nearly erect, blunt- 

 pointed or often notched at apex, on vigorous young trees |'-f' long, acute or acumi- 



