1358 A TEXTBOOK OF THEORETICAL BOTANY 



Allied to cleistogamy is cleistoflory, a term applied to certain uncom- 

 mon cases where flowers are pollinated in the bud, but by insects which bite 

 or burrow their way into the closed flower. Small beetles penetrate the 

 larger buds of Magnolia in this way and pollination has already been per- 

 formed by the time the flower opens. 



