ALLIES OF THE PLANT WORLD 
pointing hairs only to find that, when he at- 
tempts to go out again, the bristles present stiff, 
unyielding obstacles against his egress. In his 
excitement at this discovery, he buzzes around 
quite angrily and, without noticing it, thor- 
oughly showers the stigma with pollen and in- 
cidentally covers his own body with a good 
supply to be carried on to the next stop. When 
this process is quite complete, the flower gra- 
ciously relents, relaxes its hairs and allows the 
exasperated insect to escape. 
The Pedicularis family uses similiar coercive 
methods, and by sharp teeth, forces insect-visi- 
tors to take a course through the flowers which 
brings them in contact with both stamens and 
pistils. 
The purple Loosestrife, pretty dweller by 
banks and meadows, sets a rich table and so al- 
ways has plenty of insect visitors. It produces 
six different kinds of yellow and green pollen, 
and is therefore sure to suit every taste. In- 
cidentally it has two different sets of stamens 
and stigmas of three different lengths. 
Night-blooming flowers only entertain after 
the sun goes down. All day long they look 
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