226 Trees with Compound Leaves. [E i, ir 



Leaflet, green, and of nearly the same shade on each 

 side ; not shining, but smooth throughout, excepting 

 that sometimes it is slightly downy in the angles of 

 the ribs. 



Bark of the branches, grayish-brown and smooth. 



Winged seeds, smaller than those of the White Ash, but 

 with the wing about the same length. 



Found, in New England, but mostly southward and 



westward. 

 A tree twenty to thirty feet high, of inferior value. 



Fig. 113. Blue Ash. F. quadrangulata, Michx. 

 Leaves, COMPOUND (odd-feathered ; leaflets, five to nine) ; 



OPPOSITE ; EDGE OF LEAFLETS SHARPLY TOOTHED. 



Outline of leaflet, oval to long egg-shape. Apex, taper- 

 pointed. Base, pointed. 



Leaflet-stem, very short. Leaf-bud, velvety. 



Leaflet, three to four inches long, both sides green ; 



downy beneath. 

 Bark of the trunk cracks and separates in thin plates, 



like that of the White Oak. Branchlets smooth and 



square, or margined when young, becoming nearly 



round. 



Winged seeds, about one and a half inches long, one 

 fourth to one half of an inch wide ; blunt, and of 

 nearly the same width at both ends, and with the 

 apex often notched. 



Found, usually on limestone hills, from Southern Michi- 

 gan to Central Minnesota, southward to Northeastern 

 Kansas. 



A tree sixty to eighty feet high, used for flooring, 

 carriage building, etc, Its inner bark furnishes a blue dye. 



