354 Class XXI. Order VIII. 



sile, their under side and common stalk hairy. The barren 

 flowers are in long, pendulous, downy aments, connected three 

 together, with a pair of acuminate bractes, connate on one side, 

 at their junction ; calyx scales three parted, the middle segment 

 acute, the lateral ones obtuse or toothed ; anthers oval brownish, 

 from six to eight. Fertile flowers on the ends of the branches ; 

 calyx of four acute, downy leaves. The nut is hard, thick 

 shelled, commonly with four prominent angles, the kernel toler- 

 ably good, the green shell rather thick, opening two thirds of 

 its length in autumn, when the fruit is ripe. 



JUGLANS GLABRA. J[JuM. Pig Nllt. Hog Nut. 



Leafets seven, ovate, acuminate, serrate, glabrous 

 on both sides, with resinous dots underneath, the odd 

 one sessile ; fruit and nut oblong or obeordate. 



Syn. JUGLANS PORCINA- Mick. f. 



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

 ing to the observation of Michaux, of a brown colour, 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 pedulous. Nut 

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

 frequently pear shaped or tapering at base, its quarters separat- 

 ing half way down when the fruit is ripe. 



JUGLANS S^UAMOSA- Mich. f. Shelbark. 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. abr. 



Syn. JUGLANS COMPXESSA, 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 



