Minnesota Plant Diseases. 



39 



plant debris from year to year. Often apparently earth-inhabit- 

 ing fungi can be traced back to their attachment to wood lying 

 buried in the soil, and many plants which may apparently live 

 both on the soil and on the wood belong to this category. 



FIG. IS. An earth-dwelling fungus (Lri>ita pmocrai of the ill luiiui. Original. 



Among the earth-inhabiting fungi the mushroom group is per- 

 haps most prominent, but a host of other fungi have a similar 

 habit. Club fungi, many pore fungi, puff balls, carrion fungi, 

 cup fungi, and saddle fungi are found among the commoner 

 forms. 



