180 



JUGLANDACEiE. 



[part 



that there is a terminal one. The calyx of the 

 female flower is also covered with a viscid down, 

 which remains on the husk of the ripe fruit ; and 

 the shell of the nut is very hard and very much 

 furrowed. The tree is of much smaller size 

 than that of the Black Walnut, and it may 

 be easily distinguished by the greyness of the 

 bark of its young shoots ; it also comes into 

 leaf earlier, and the nuts are ripe about a fort- 

 night sooner than the others. The wood is light, 

 of a reddish colour, and rather a coarse grain. 



THE GENUS CARYA. 



The genus Carya (the Hickory) consists of 

 ten or twelve species, which greatly resemble 

 the Walnuts in their 

 general appearance, but 

 are distinguished by the 

 male catkins, instead of 

 being solitary,being pro- 

 duced in tufts or bunches, 

 three or more on each 

 peduncle. The stigma 

 is also frequently fout*- 

 lobed, and the husk, 

 when ripe, divides into 

 four equal valves, which in some of the species are 

 very thick, as in the Thick-shell bark Hickory 

 (see a in Jig, 80). The nut {b) is not valved, and it 



Fig. 80 — Thick-shell Bark 

 Hickory {Carya lacinosa). >^ 



