46 



THE CONIFERS OF THE NORTHERN ROCKIES. 



order, but by torsion come to lie nearly in the plane of the flat branch- 

 ing system of twigs. When detached they leave n small round or 

 oval scar, smooth, and not elevated as in the spruce and some other 



FIG. 28. Branch of Grand Fir. Condition in July. 



genera. The leaves on the topmost branches usually curl sharply and 

 rigidly upward, and so often appear in contrast to those below. The 

 younger stems and branches are usually smooth, with prominent gum 

 blisters. Flowers of both kinds are borne on twigs of the previous 



