Mar. 1,1925 
The Life History of.Pilacre Faginea 
417 
as a Protogasteromycete, whose nearest 
known relative among the puff balls 
appears to be Tulostoma. 
The history of the nomenclature of 
this fungus shows a difference of opinion 
as to the application of the generic name 
Pilacre. There seems to be no good 
reason for regarding it as a synonym of 
Roesleria, as the original type of the 
genus is unknown and undetermined. 
The writers adopt and recommend 
the application of the generic name 
Pilacre to P. faginea as the nomen- 
clatorial type of the genus because this 
name has been established and in 
general use for this fungus for the past 
74years. 
It is shown that this fungus has no 
relation to Roesleria, the Discomycete 
which some authors have considered as 
a perfect stage of Pilacre faginea. 
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