176 JUGLANDACE.^. [part i. 



nished with bracts, which grow so closely to 

 the flower as almost to seem a part of it. The 

 ovaries are generall}^ two-celled, but they rarely 

 remain so, as they become one-celled before the 

 seed is ripe. The style is, in most cases, very 

 short, and the stigma generally two-lobed. The 

 leaves are always alternate, and generally simple, 

 except in the case of the Juglandacea?. They 

 are all hardy trees and shrubs. 



JUGLANDACEA.— THE W^ALNUT TRIBE. 



The genera belonging to this order have com- 

 pound leaves, and the male flowers in long 

 cylindrical catkins ; the male and female flowers 

 being on the same plant. 



THE GENUS JUGLANS. 



This genus consists of only three species : the 

 common Walnut (J. regia) ; the black Walnut 

 (J. nigra) ; and the Butternut (/. cinerea or 

 cathartica). The male and female flowers are 

 distinct, but on the same plant : the male flowers 

 being produced in long, solitary, cylindrical cat- 

 kins, and the female ones in pairs, or in shorter 

 catkins. The leaves are pinnate, with the leaflets 

 not always opposite, which is very rarely the 

 case in other plants. In Juglans regia (the 

 common walnut), the male flowers are produced 

 in a very thick catkin, each flower consisting of 



