po s t e I 6 i a 159 



thickened, terminating in short, incurved 

 triangular tips. Pinus albicaulis 



Pintis monticola Douglas ex Lambert gen. 

 Pinus. Ed. 1.3: pi. 87. 1837. White Pine. 



A tree 30 meters or more in height, with com- 

 paratively slender spreading branches; foliage 

 leaves in fascicles of five, triangular, rigid, mi- 

 nutely serrulate, bluish-green, glaucus,5-io centi- 

 meters long; cones cylindrical, 12-30 centimeters 

 long, their scales but slightly thickened at the 

 end, tipped with a small umbo, widely spread- 

 ing after the discharge of the seeds; seeds about 

 I centimeter long, with wings about 3 centimet- 

 ers in length. Vancouver Island and the southern 

 mainland of British Columbia, southward and 

 eastward to Montana, Idaho and the Sierras of 

 central California. 



A large tree with a trunk from one to two 

 meters in diameter. Young trees have pale gray 

 bark, which is often covered with small balsam 

 blisters similar to those which commonly occur 

 on young balsam fir trees. With age the bark 

 becomes thicker, reddish-brown and rugose. The 

 arge cones fall after the seeds are scattered and 



