THE BEHAVIOUR OF FLOWERS 167 
well dusted with pollen which they take to the pistil- 
late flowers of another Arum. Is this not a very 
curious story which the Arum has to tell? 
The wind helps to cross pollinate many flowers. In 
many plants no provision 1s made for using insects to 
carry the pollen. For many of these plants the wind 
carries the pollen. The oak, hazel, wheat, grasses, etc., 
are examples of wind-pollinated flowers (Figs. 201, 
202, 203). | | 

