380 CLASS XXI. ORDER VIII. 



Syn. JUGLANS PORCINA. Mich. f. 



This species of walnut has its young twigs in winter, accord- 

 ing to the observation of Michaux, of a brown color, and smaller 

 by half than those of the white walnut and shagbark. The buds 

 are also small. The leaves are pinnate, with seven, sometimes 

 five, nearly sessile, serrate, acuminate leafets, smooth on both 

 sides, not hairy. Aments in threes, long, and pendulous. Nut 

 small, thick shelled, hard, smooth ; the outer, green shell thin, 

 frequently pear shaped or tapering at base, its quarters separating 

 half way down when the fruit is ripe. 



JuGLANS SQUAMOSA. Mich. f. Shclbark. Shagbark. 



Leafets five, on long petioles, ovate-acuminate, ser- 

 rate, villous underneath, the odd one sessile; aments 

 of barren flowers compound, glabrous, filiform ; fruit 

 globular, depressed ; nut compressed. Mich. f. abn 



Syn. JUGLANS COMPRESSA. GcErt. Willd. 



The bark of this tree separates into long, flat scales or plates, 

 with loose, detached ends, giving its trunk a rugged appearance 

 at a distance. Michaux observes that the buds are distinguished 

 by the shortness of the two outer scales, which extend but half 

 their length. The leaves are pinnate; leafets five or seven, 

 large, oblong, acuminate, pubescent and soft underneath. The 

 fruit is large, roundish, depressed at top, the green shell exceed- 

 ingly thick, and separating completely into quarters. The nut, 

 which constitutes but a small part of the whole fruit, is white, 

 angular, flattened, thin shelled, its kernel greatly superior to 

 either of the preceding, and in considerable request. 



The wood of the three foregoing species of walnut possesses 

 similar properties. It is hard, compact, heavy, and of very great 

 strength. At the same time it is liable to warp and decay, espe- 

 cially if exposed to the weather. It is principally used for pur- 

 poses where strength is required, as in hoops, bows, the handles 

 of tools, &c. It furnishes one of the best kinds of fuel known, 

 and commands a higher price in our markets than any other 

 species of wood. 



