148 



JUGLANDACE.E. 



ference of trunk nine feet two inches, at one foot from the 

 ground. 



The specific characters of the Common Walnut are 





leaflets from five to nine, but generally seven in a leaf, 

 glabrous, obscurely serrated, and of an oval form. Nut 

 oval and rather even. 



The aments or male catkins, and female flowers appear 

 in the south of England in April and May ; in the north, 

 rarely before the end of the latter month. 



Few insects appear to feed upon the foliage of the 

 Walnut ; and, of lepidopterous larvee, we have only de- 

 tected that of Biston betularius, and of another small 

 species of geometra, upon the trees in our premises. 



The most approved varieties, for their fruit, appear to be 

 the following : — 



