'H^^' 



Figure 29. An antagonistic fungus, Tr'ichodermay attacking 

 a plant pathogenic fungus, 5. roljs'n, showing one break of a 

 septum. From Weindling (990). 



Figure 30. Influence of antagonists upon the growth of Hclminthosporium. 

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

 normal mycelium. From Porter (729). 



