124 



TREES OP THE NORTHERN UNITED STATES 



gined at base and gradually spreading 

 into an oblanceolate or linear-spa tul ate 

 wing as in the Red Ash. Small to mid- 

 dle-sized trees (like the Bed Ash), found 

 throughout, but common westward. 



4. Fraxinus quadrangulata, Michx. 

 (BLUE ASH.) Leaflets 7 to 9,- short- 

 stalked, ob- 

 long - ovate 

 or lanceo- 

 late, point- 

 F.vfridis. ed, sharply 



serrate, green on both sides. Fruit nar- I 



rowly oblong, blunt, of the same width 



at both ends, or slightly narrowed at 



the base. A large tree, 60 to 80 ft. high, 



with smooth square twigs on the vig- 

 orous growths. Wisconsin to Ohio and 



Kentucky. 



F. quaclrang-ulata. 



5. Fraxinus platycarpa, Michx. (WA- 

 TER-ASH.) Leaflets 5 to 7, 3 to 5 in. long, 

 ovate or oblong, acute at both ends ? short- 

 stalked, slightly serrate. Branchlets te- 

 rete, smooth to pubescent. Fruit broadly 

 winged, % in. wide, often 3-winged, ta- 

 pering to the base. A medium-sized tree 

 in deep river-swamps, Virginia and south. 



6. Fraxinus 

 sambucifolia, 



F. platycfirpa. Lam. (BLACK 



ASH.) Leaflets 7 to 11, sessile, oblong- 

 lanceolate, tapering to a point, serrate, 

 obiase or rounded at base, green and 

 smooth on both sides ; when young, with 

 some rusty hairs along the midrib. Fruit 

 without calyx at base and with wing all 

 around the seed-bearing part, blunt at 

 both ends. A slender tree, 40 to 70 ft. 

 high, with dark-blue or black buds. 



7. Fraxinus excelsior, L. (EUROPEAN 

 ASH.) Leaflets 11 to 13 (in some culti- 



F. sambucifdlia. 



