Plant Defences 



83 



the bulbs, lead the water down to the place where it is needed. 

 Such leaves are called ensiform. 



Fig. 86.— Seedlings of Black Wattles {^Acacia melanoxylon). 



Fig. 87. — Branch o^ Acacia melanoxylon, .showing phyllodes («, b). (From Thome 

 and Bennett's " Structural and Physiological Botany.") 



Every one has noticed the two kinds of leaves borne on 

 the Eucalyptus (blue gum). The upper leaves are placed with 



