32 Pinaceae 



ramidal head, and gracefully hanging short 

 lateral branches ; bark when mature reddish- 

 brown and broken into thin scales; leaves 

 soft and flexible, slender or slightly incurved, 

 stouter on the fertile branches, J-iJ inches 

 long, glaucous when young, becoming dark 

 blue-green ; cones oblong-cylindric, 1-2 inches 

 long, lustrous, light chestnut brown with 

 thin flexible wedge-shaped scales, with erose- 

 dentate margins. 



On the higher mountain slopes in the 

 Rockies, but much lower in the valleys of 

 the Selkirks, where it grows to a great size. 



. erug A depressed rigid shrub, with 

 Siberica many slender, decumbent stems, 



Burgs. curving upward and forming a 



Alpine circular mass frequently 10 feet 



in diameter and 18 inches high; 

 bark reddish-brown; leaves numerous J-J 

 an inch long, awl-shaped, rigid, spreading 

 nearly at right-angles to the branches, lin- 

 ear-lanceolate, acute, and tipped with sharp, 

 slender points; channelled and whitened 



