172 Trees with Simple Leaves. [ci 



or three fourths of an inch in thickness ; drooping 

 at the ends of the branchlets ; long oval or cylinder- 

 shape ; pale green when young, becoming brownish 

 as they ripen. Scales, broad reverse egg-shape, with 

 an entire edge, and rounded or somewhat two-lobed 

 at the apex. 



Found, in Maine, Northeastern Vermont, Northern Michi- 

 gan, Minnesota, and far northward, on low ground 

 and in swamps. It is most common north v of the 

 United States boundaries. 



An evergreen tree, forty to seventy feet high. One 

 of the most important of the Northern timber trees. 



J 



Fig. 88. Norway Spruce. \P. excelsa] 



This spruce is not a native, but is now very widely 

 cultivated, and is sometimes found escaped from cultiva- 

 tion. It is a finer and larger tree than the native spruces, 

 and differs from them especially in these items : 



Cones, five inches and more in length ; about one and a 

 half inches in thickness. 



Branches and branchlets, heavily drooping, especially in 

 the older trees. 



Genus TSUGA, Carr. (Hemlock.) 



Fig. 89. Hemlock. T. Canactensis (L.), Carr. Abies Canadlnsis, 



Michx. 



Leaves, SIMPLE ; INDETERMINATE in position because of 

 their closeness ; arranged singly in two flat distinctly 

 opposite ranks up and down the branchlets. 



Leaf, one half inch long, narrow ; blunt ; sometimes 

 minutely toothed toward the apex ; flat ; green 

 above ; silvery white beneath. 



