92 



WOOD AND FOREST. 



Habitat. 



18 



WESTERN HEMLOCK. BLACK HEMLOCK. 

 Tsuga heterophylla (Rafinesque) Sargent. 



Tsuga, the Japanese name latinized; heterophylla refers to two kinds 

 of leaves. 



Habitat: (See map) ; 

 best on coast of Washing- 

 ton and Oregon. 



Characteristics of the 

 Tree: Height, 150'-200'; 

 diameter, 6'-10'; branches, 

 pendent, slender ; bark, 

 reddish gray, deep, longi- 

 tudinal fissures between, 

 broad, oblique, flat ridges; 

 leaves, dark green, two- 

 ranked; cones, small, like 

 Eastern Hemlock. 



Appearance of Wood: 



Color, pale brown, sap- 

 wood thin, whitish; non- 

 porous ; rings, narrow, 

 summer wood thin but 

 distinct ; grain, straight, 

 close ; rays, numerous, 

 prominent ; non-resinous. 



Physical dualities : 

 Light in weight, strong, 

 elastic, hard;* shrinkage, 



Leaf. 



*Not in Jesup Collection. 



