PORIA WOOD-ROT 



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is covered with irregularly shaped, minute pores, which 

 are often slightly curved or inclined to become elongated. 

 The walls or dissepiments separating the pores are very 

 minutely toothed when seen under a pocket lens. 





Fig. ap.Poria vaporaria. i, portion of a fungus, nat. 

 size ; 2, section of same. 



Hartig states that this fungus is very common on spruces 

 and pines as a parasite, attacking roots or parts above 

 ground as a wound-parasite. The mycelium often forms 

 white, branched, floccose strands, somewhat like those of 



