THE STIGMATIC SrRFACE 



OF A POPPV M T 



ENLARGED 



The stigvi may bf 



vario9ui$f modijh dcUitate recep- 



tion of tht polUn. ThtM picture ihota 

 the cnrioMf arran^emevt in the caae of 

 c poppy. The poUen ^ainM deposited 

 on this stigmatic surface send out little 

 tubes thai penetrafr /'" stigma and 

 ultimately make thtu ..^,, to the ox^ile 

 or seed case, carrying the nnclcu$ that 

 unites toith the nucleus of the egg cell, 

 thus effecting fertilization. Each egg 

 cell is fertilized by a single pollen 

 nucleus. 



