50 



TREES OF NORTH AMERICA 



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



Bark of the trunk '-!' 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. 



Distribution. 

 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 ' l n g an d ^'"iV 

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

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



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

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



