i272 Etliel McLennan 















it" 





Text-Figure 6. 



The external appearance of the ovary of Lolium j^erenne at Stage 

 B. X 15 diam. 



starchy contents are disorganised and absorbed into the hyphal 

 system. The collapse of these cells enables the ovule to encroach 

 on the space formerly occupied by them, and elongation of -the 

 developing grain thereby results. At this period the ovule does 

 not increase markedly in breadth, and so the cells composing the 

 side walls of the carpel are not yet invaded, the activity of the 

 fungus is, as in Stage A, more evident in the distal region. 



The most noticeable change occurs in the ovule itself. Tlie 

 r'fungus is responsible for the disorganisation of the nucellus. 



