48 TREES OF NEW ENGLAND. 



Juglans nigra, L. 

 BLACK WALNUT. 



Habitat and Range. Kich woods. 



Maine, New Hampshire, and Vermont, not reported 

 native ; Massachusetts, rare east of the Connecticut river, 

 occasional along the western part of the Connecticut valley 

 to the New York line ; Rhode Island, doubtfully native, 

 Apponaug (Kent county) and elsewhere ; Connecticut, fre- 

 quent westward, Darien (Fairfield county) ; Plain ville (Hart- 

 ford county, J. N. Bishop in lit., 1896); in the central and 

 eastern sections probably introduced. 



South to Florida ; west to Minnesota, Kansas, Arkansas, and 

 Texas. 



Habit. A large tree, 50-75 feet high, with a diameter 

 above the swell of the roots of 2-5 feet ; attaining in the 

 Ohio valley a height of 150 feet and a diameter of 6-8 feet ; 

 trunk straight, slowly tapering, throwing out its lower branches 

 nearly horizontally, the upper at a broad angle, forming an 

 open, spacious, noble head. 



Bark. Bark of trunk in old trees thick, blackish, and 

 deeply furrowed ; large branches rough and more or less fur- 

 rowed ; branchlets smooth ; season's twigs downy. 



Winter Buds and Leaves. Buds small, ovate or rounded, 

 obtuse, more or less pubescent, few-scaled. Leaves pinnately 

 compound, alternate ; rachis smooth and swollen at base, but 

 less so than that of the butternut ; stipules none ; leaflets 

 13-21 (the odd leaflet at the apex often wanting), opposite or 

 alternate, 2-5 inches long, about half as wide; dark green 

 and smooth above, lighter and slightly glandular-pubescent 

 beneath, turning yellow in autumn ; outline ovate-lanceolate ; 

 apex taper-pointed ; base oblique, usually rounded or heart- 

 shaped ; stemless or nearly so, except the terminal leaflet ; 

 stipels none. Aromatic when bruised. 



Inflorescence. May. Appearing while the leaves are unfold- 

 ing, sterile and fertile flowers on the same tree, the sterile 

 along the sides or at the ends of the preceding year's branches, 



