50 



TREES OF NORTH AMERICA 



third year. Winter-buds obtuse, dark chestnut-brown, pubescent, nearly ^' long. 



Bark of the trunk f -1;^' thick, red-brown, and deeply divided into broad flat con- 

 nected ridges cov- 

 ered with thin closely 

 appressed plate-like 

 scales. "Wood light, 

 soft, not strong, brit- 

 tle, coarse-grained, 

 pale brown tinged 

 with red, with thin 

 nearly white sap- 

 wood. 



D is tribution. 

 Rocky banks of 

 streams usually at 

 elevations between 

 2500 and 3000 on 

 the Blue Ridge from 



southwestern Virginia to northern Georgia, generally singly or in small scattered 



groves of a few individuals. 



Often planted as an ornamental tree in the northern states, and occasionally in 



western Europe. 



3. Tsuga heterophylla, Sarg. Hemlock. ' 



Leaves rounded at the apex, conspicuously grooved, dark green and very lus- 

 trous on the upper surface, marked below by broad white bands of 7-9 rows of 

 stomata, abruptly contracted at the base into slender petioles, ^'-f long and -^-\^ 

 wide. Flowers: staminate yellow; pistillate purple and puberulous, witli broad 

 bracts gradually narrowed to an obtuse point and shorter than their broadly ovate 



Piq ^9 



slightly scarious scales. Fruit oblong-oval, acute, sessile, f '-1' long, with slightly 

 puberulous scales longer than broad, often abruptly narrowed near the middle, and 



