INTRODUCTION 



said to be lobate, but when completely divided 

 ioto several distinct leaflets it is said to be 

 compound. 



A leaf is said to be palmately lobed when the 

 divisions do not extend to the middle (fig. 43), 



A leaf is pinnately lobed when the incisions are 

 only slight (fig. 47), and fissured or cleft when 

 they are deeper (figs. 48 and 49). 



Leaves may also be entire (fig. 51), lobate 

 (fig. 47), or fissured or cleft (figs. 48, 49). 



fissured when they reach nearly to the middle 



(fig. 44), cleft when they reach beyond the middle 



15). It is simple or entire when undivided 



(fig- 5°)- 



A palmate leaf is called compound when it 

 divides into several radiating leaflets at the end 

 of the leaf-stalk (fig. 46). 



Fig. 52 illustrates a pinnate leaf which has 

 several secondary leaves, called leaflets, on the 

 sides of the leaf-stalk. 



When a palmate leaf consists of three lea' 

 as in clover, it is called ternate or trifoliate 

 (fig. 53) ; and a greater number of leaflets, simi- 

 larly arranged, is shown at figs. 54-^. 



