166 



WOOD AND FOREST. 



55 



Habitat. 



Black Locust. Locust. Yellow Locust. 



Yellow, from color of sap-wood. 



Robinia pseudacacia Linnaeus. 

 Rohinia, in honor of Jean Robin, of France; ipseudacaoia, means false acacia. 



Habitat: (See map); 

 best on western Allegheny 

 mountains in West Vir- 



Characteristics of the 

 Tree : Height, 50'-S0' ; 

 diameter, 3'-4' ; bark, 

 strikingly deeply fur- 

 rowed, dark brown ; 

 prickles on small branches, 

 grows fast, forms thick- 

 ets, on account of under- 

 ground shoots ; leaves, 

 8"-l-i" long, pinnately 

 compound ; 7 to 9 leaf- 

 lets, close at night and in 

 rainy weather ; fruit, pod 

 3"-i" long. 



Appearance of Wood : 



Color, brown, sap-wood 

 thin, yellowish ; ring-por- 

 ous ; rings, clearly marked 

 by 3 or 3 rows of large 

 open ducts ; grain, 

 crooked, compact. 



Leaf. 



