PYRENOMYCETES 



285 



stomata of the host, extend for a short distance in the 

 intercellular spaces, and send haustoria into the adjoining 



FIG. 69. Phyllactinia suffulta, a fungus having su- 

 perficial mycelium which grows on the surface of the 

 host-plant. i, a hazel leaf partly covered with the 

 white mycelium of the fungus; 2, fruit of the fungus 

 furnished with spine-like, projecting appendages ; 3, asci 

 containing spores. All, except fig. i, mag. 



cells. Salmon has shown that in Erysiphe taurica, the 

 whole of the mycelium during the conidial stage is located 

 in the tissues of the host, the conidiophores emerging 



