116 WOOD AND FOREST. 



30 



BLACK WALNUT. 

 Juglans nigra Linnaeus. 

 Juglans means Jove's nut; nigra refers to the dark wood. 



Habitat. 



Leaf. 



Habitat: (See map); 

 best in western North 

 Carolina and Tennessee. 



Characteristics of the 

 Tree: Height, 90'-120', 

 even 150'; diameter, 3' 

 to even 8'; clean of 

 branches for 50' to 60'; 

 bark, brownish, almost 

 black, deep fissures, and 

 broad, rounded ridges ; 

 leaves, l'-2' long, com- 

 pound pinnate, 15 to 23 

 leaflets, fall early; fruit, 

 nut, with adherent husk, 

 and edible kernel. 



Appearance of Wood : 



Color, chocolate brown, 

 sap-wood much lighter ; 

 diffuse-porous ; rings, 

 marked by slightly larger 

 pores; grain, straight; 

 rays, numerous, thin, not 

 conspicuous. 



Physical dualities : 



Weight, medium (31st 



