LEAVES FORM AXD POSITION 



75 



Sometimes the leaflets themselves are compound, and the 

 whole leaf is then said to be bi-compound or twice-com- 



FlG. 94. DIGI- 

 TATELY COMPOUND 

 LEAF OF RASP- 

 BERRY. 



FIG. 95. POISON IVY. LEAF AND FRUIT. 



pound (Fig. 90). Some leaves are three-compound, four- 

 compound, or five-compound. Decompound is a general 

 term to express any degree of 

 compounding beyond twice-com- 

 pound. 



Leaves that are not divided as 

 far as to the midrib are said to 

 be: 



lobed, if the openings or sinuses 

 are not more than half the depth 

 of the blade (Fig. 96); 



cleft, if the sinuses are deeper FIG . ^ _ LOBE D LEAF OF 

 than the middle ; SUGAR MAPLE. 



