PINACE^ 



315 



m. 



hairy. Leaves slender, more or less curved, up to about 

 long, tapering into a spiny point. 



A most distinct and interesting pigmy conifer, first collected 

 near Loggan, Alberta, in 1904, by J. G. Jack, and only recently 

 introduced into cultivation. 



P. Albertiana is a somewhat critical species allied to P. alba, 

 of which it may be a western form. It is distinguished by 

 its resinous buds, occasionally hairy shoots, and different leaf 

 arrangement. 



Fig. 67.— pice a ALBERTIANA. 

 a, spray In profile ; b, winter bud ; c, portion of slioot and two leaves ; d, section of leaf. 



As a wild tree it extends from Wyoming and W. Mon- 

 tana to Alberta and British Columbia, and in the Rocky 

 Mountains is found at elevations ranging from 3,000 to 5,000 

 ft. It attains larger dimensions than any other N. American 

 spruce except P. sitchensis, and occasionally forms extensive 

 forests. 



