Important Forest Trees of the United States 



41. Pecan. 42. Water hickory. 4 3. Nutmeg hickory. 44. Bitternut 



hickory. 



elliptical, 3 to 5 inches long, long-pointed, narrowed at base, finely toothed. Flowers in 

 branched clusters 4 to 6 inches long, showy, 54 to 1J4 inches long, pale greenish yellow, 

 with petals nearly equal in length. Fruiting capsule 1 1 /\ to 2 inches in diameter, prickly, 

 with 1 or 2 poisonous seeds 1 to 1 1 /2 inches wide. 

 Principal uses: Same as No. 37. (State tree of Ohio.) 



OO (O on p. 774). Leaves and usually branches borne singly (alternate). 



W (WW on p. 782). Leaves divided into leaflets (compound), attached along the 



extended leafstalk (pinnate). 



X. Leaflets long-pointed; twigs not spiny; fruit rounded or egg-shaped. 

 Y. Leaflets finely toothed, shedding in fall; fruit a nut with a husk. 



Z. Leaflets 11 to 23; pith of twigs in plates; husk of nut not splitting off 

 WALNUT (Juglans). 



39. BLACK WALNUT, Juglans uigra L. (eastern black walnut, American walnut, 

 walnut). 



Large tree of eastern half of United States and southern Ontario. Bark dark brown to 

 black, thick, with deep furrows and narrow, forking ridges. Compound leaves 12 to 24 

 inches long. Leaflets 15 to 23, without stalks, broadly lance-shaped, 2J/2 to 5 inches long, 

 long-pointed, finely toothed, nearly smooth above, soft hairy beneath. Nuts single or 

 paired, 1J/2 to 2/a inches in diameter including the thick husk, nearly spherical, 

 irregularly ridged, thick-shelled, sweet and edible, known as walnuts. 



Principal uses: Valuable furniture wood, solid and as veneer. Also for radio and 

 phonograph cabinets, sewing machines, and interior finish. The leading wood for gun- 

 stocks. Edible walnuts. Shade tree. Shelterbelts. (State tree of Iowa.) 



40. BUTTERNUT, Juglans cinerea L. (white walnut, oilnut). 



Medium-sized to large tree of northeastern quarter of United States and adjacent 

 Canada. Bark light gray, furrowed into broad, flat ridges. Compound leaves 15 to 30 

 inches long. Leaflets 11 to 19, without stalks, broadly lance-shaped, 2 to 4/2 inches long, 

 long- or short-pointed, finely toothed, slightly hairy above, soft hairy beneath. Nuts 3 to 5 

 in drooping clusters, 1 1 /2 to 2 ^2 inches long including the thick husk, egg-shaped, 

 pointed, irregularly ridged, thick-shelled, sweet and oily, known as butternuts. 



Principal uses: Furniture. Shade tree. Edible butternuts. 



ZZ. Leaflets 5 to 11 (11 to 17 in No. 41) ; pith of twigs solid; husk of nut 

 splitting off HICKORY (Carya; formerly known also as Hicoria). 



