THE ROOT. 



121 



EXERCISE LIT. 

 Kinds of Tap-Hoot. 



FIG. 237. 



FIG. 238. 



Conical Root. 



Fusiform Root. 



Napiform Root. 



CON'ICAL ROOTS are tap-roots, which taper gradu- 

 ally downward, and so are shaped like a cone. Fig. 

 236. 



FU'SIFORM, OR SPINDLE - SHAPED ROOTS, are tap- 

 roots enlarged in the middle of their length, and 

 tapering toward both ends. Fig. 237. 



A NAP'IFORM, OR TURNIP-SHAPED ROOT (Fig. 238), 

 is a tap-root, more or less globular in form. 



The kinds of tap-root illustrated in this exercise 

 are equally continuations of the stem, with that 

 shown in Fig. 234. By reference to Fig. 116, it will 

 be seen that these stems are made up of nodes, and 

 are just as really stems as those in which the intervals 

 between the nodes are considerable. 



