LEAVES— FORM AND POSITION 



75 



Sometimes the leaflets themselves are compound, and the 

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



Fig. 94. — DlGI- 

 LATKLY COMPOl ND 



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 FlG . 96 ._ LobE d leaf of 

 than the middle; sugar Maple. 



