184 WOOD AND FOREST. 



64 



OREGON ASH. 

 Fraxinus oregona Nuttall. 



Fraxinus, from a Greek word (phraxis) meaning split, refers to the 

 cleavability of the wood ; oregona, named for the State of Oregon. 



Habitat. 



Leaf. 



Habitat: (See map); 

 best in southern Oregon. 



Characteristics of the 

 Tree: Height, 50'-80'; di- 

 ameter, 1'-1J^', even 4'; 

 branches, stout, erect; 

 bark, grayish brown, deep 

 interrupted fissures, broad, 

 flat ridges, exfoliates ; 

 leaves, 5"-14" long; pin- 

 nately compound, 5 to 7 

 leaflets; fruit, single sa- 

 maras in clusters. 



Appearance of Wood: 



Color, brown, sap-wood 

 thick, lighter ; ring-por- 

 ous ; rings, plainly marked 

 by large, open, scattered 

 pores ; grain, coarse, 

 straight; rays, numerous, 

 thin. 



Physical Qualities : 



Weight, medium (37th in 

 this list), 35 Ibs. per cu. 

 ft; sp. gr., 0.5731; me- 



