G.82] 



CLASSIFICATION AND DESCRIPTION 



141 



2. Juglans nigra, L. (BLACK WAL- 

 NUT.) Leaflets 13 to 21,lanceolate-ovate, 

 taper-pointed, somewhat heart-shaped 

 and oblique at base, smooth above and 

 very slightly downy beneath. Fruit 

 globular, roughly dotted; the thick- 

 shelled nut very rough ; ripe in Octo- 

 ber. A large handsome tree, 50 to 120 ft. 

 high, with brown bark; more common 

 west than east of the Alleghanies ; 

 ofteo planted. Wood dark purplish- 

 brown. 



3. Juglans regia, L. 

 NUT. ENGLISH WALNUT.) 



J. nigra. 



(MADEIRA 



Leaflets 5 



to 9, oval, smooth, obscurely serrate. 

 Fruit oval, with a thin-shelled oval 

 nut not nearly so rough as that of 

 Juglans cinerea, or of Juglans nigra. 

 When ripe the husk becomes very 

 brittle and breaks open to let out 

 the nut. Tree intermediate in size, 

 40 to 60 ft. high, hardy as far north as 

 Boston in the East, but needs protec- 

 tion at St. Louis. It should be more 

 extensively cultivated. Introduced 

 from Persia. 



GENUS 82. 



Hard-wooded trees with alternate, odd-pinnate leaves 

 having straight-veined leaflets. The leaflets are opposite 

 each other, and the terminal pair and end leaflet are 

 usually much the largest. The sterile flowers are in hang- 

 ing catkins, the fertile ones minute, forming a large, 

 rounded, green-coated, dry drupe, with a roughened nut 

 having a bony partition. The drupes hang on till frost, 

 when they open more or less and usually allow the nut 

 to drop out. Wood hard and tough. 



