THE PARTS OF LEAVES 



31 



do in the Virginia creeper (which is a very closely 

 related plant), and a compound leaf would be the 

 result (that is, a leaf in which the blade is com- 

 posed of at least two wholly separated portions). 



35. Each part of the Virginia creeper leaf (and 

 also of the dewberry leaf) is borne upon a distinct 



FIG. 26. 

 Bean leaves. 



stalklet of its own. These stalklets, then, are 

 secondary petioles, or petiolules. 



36. Bean leaves (Fig. 26) are seen to be com- 

 pound, with both petiole and petiolules. Moreover, 

 these petiolules are provided with little stipules, or 

 stipels. Let the pupil now determine if there is a 



