Minnesota Plant Diseases, 



17 



of the trunks will arise the honey-colored mushroom, which 

 usually occurs in great clusters. 



Fic. 6. — "Shoestring*' strands of mycelial threads of the honey-colored mushroom 

 (Armillaria mellea)- (See also Fig. 128.) Original. 



Physiology of the Mycelium. The mycelium arises from 

 the spore by the germination of the latter. The spore sends 



