286 



H. MAE SHALL WABD. 



Pleospora, &c. 

 Uredinse Lichens 



Claviceps 



Xylaria 



Peziza 



Pyronema 



b S, 



Ascobolus 



Podospliaera and 

 Erysiphese 



Peionosporese. 



|: 



We may now shortly consider the chief results obtained by 

 Kihlmann from cultivations of Melanospora parasitica/ 

 a pyrenomycetous fungus found associated with, and parasitic 

 upon Isaria. 



Isaria grows upon and destroys insect larvse, and Kihlmann 

 observed that large quantities of the perithecia of Melano- 

 spora soon appear with it; the same is true for Botrytis — 

 another insect killing fungus. In both cases the sowing of 

 Melanospora spores on these Fungi soon resulted in the for- 

 mation of abundant perithecia. 



This, of course, only suggests, but does not prove, the para- 

 sitism of the Melanospora on the Isaria, or Botrytis. 



Spores of Melanospora — whether conidia or ascospores — 

 if sown in water only swell and throw out short tubes, which 

 invariably die off soon. The same happened with all the nume- 

 rous nutritive solutions tried. These solutions were varied not 

 only as to composition, but also as to concentration, &c. 



I Op. cit. 



