4 STRUCTURAL BOTANY 



with some other plant, such as a Potato. A potato 

 plant differs in many points from the Wallflower, but 



ft. 



TB 



FIG. 2. Young Potato plant (reduced), raised from seed. 

 ct, the first leaves, or cotyledons ; I, the foliage-leaves ; 

 ft, b f branches, bearing the tubers ; sc, scale-leaves ; r, r' t 

 roots; TB, tubers; ec, their scale-leaves ; bd, their buds. 

 (From Sachs, after Duchartre.) 



we will confine ourselves to one of these differences. 



