74 Plants and theii' Ways in South Africa 



off a little spring in the hinged stamen which flies up and 

 scatters the pollen. 



Utriailaria^ which grows along the edges of streams, is 

 another insect-catching plant. The leaves are little hollow 

 bladders which help to float the plant. Each leaf has a little 

 trap-door opening into the bladder. Minute insects swimming 

 by easily push the door in and enter. They never come out 

 again, as pushing the door from the inside closes it. 



