Figure 30. An antagonistic fungus, Trichodermay attacking 

 a plant pathogenic fungus, S. rolfsiiy showing one break of a 

 septum. From Weindling (963). 



Figure 31. Influence of antagonists upon the growth of Helminthosforiuni. 

 Distortion of mycelium by Bacterium sp. (A) and B. rnmosus (B). C is a 

 normal mycelium. From Porter (695). 



