CHAPTER XIII 



AGARICS WHICH ARE PARASITIC ON OTHER AGARICS 



Non-basidiomycetous Fungi Parasitic on Other Fungi— Basidiomycetous Fungi 

 Parasitic on Other Fungi — Boletus parasiticus — Leptonia parasitica — Claudopns 

 suhdepluens—Volvaria Loveiana— The Genus ^yct^iis—Nyclalis asterophma— 

 Nyctalis parasitica — Stropharia epimyces—Colbjbia dryophih, and its Pseudo- 

 parasite Tremella mycetophila—A Morchelloid Modification of Collybia velutipes 



Non-basidiomycetous Fungi Parasitic on Other Fungi.— All groups 

 of Fungi, and also Lichens, have their fungus enemies. These fungi 

 which are parasitic on other fungi are of considerable interest, both 

 in themselves and for the elucidation of problems in parasitology ; 

 but since, directly, they are of little or no economic importance, 

 phytopathologists tend to neglect their study and scarcely mention 

 them in their text-books. 



The basidiomycetous fungi which are parasitic on other fungi 

 are but few. One of them, Stropharia epimyces, has received our 

 attention in Chapter VII ; and the others will be treated of in the 

 present Chapter. 



The non-basidiomycetous fungi which are parasitic on other 

 fungi are far more numerous than the basidiomycetous, and the 

 accompanying selected list of them will perhaps suffice to suggest 

 their number and variety and the wide field they offer for further 

 investigation.^ 



Basidiomycetous Fungi Parasitic on Other Fungi. — Among the 

 Basidiomycetes there are but few species that attack other living 

 fungi, and they are all Hymenomycetes which live on the fruit-bodies 



1 W. Zopf, in 1890 (Die Pilzc, Breslau, pp. 269-281), gave the names of all the 

 species of fungi which were then known to be parasitic on other fungi, and to his 

 pages I am largely indebted for the data embodied in the Table. 



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