THIRD SUPPLEMENTARY LIST OF PARASITIC FUNGI 
OF WISCONSIN. 
J. J. DAVIS. 
In 1882 Dr. William Trelease, at that time occupying the 
chair of Botany in the University of Wisconsin, prepared a 
Preliminary List of the Parasitic Pungi of Wisconsin, enumer¬ 
ating 268 species. In 1893 the writer compiled a Supple¬ 
mentary List, and in 1897 a Second Supplementary List, carry¬ 
ing the number to 567. These lists were published in the 
Transactions of the Wisconsin Academy of Sciences, Arts and 
Letters, in Yols. VI, IX, and XI, respectively. The present 
enumeration is a record of those species not included in the 
previous lists that have come under my notice. With a few 
exceptions noted, it is founded on specimens in my herba¬ 
rium. They are enumerated under serial numbers continuous 
with those of the preceding lists. This is preceded by a list 
of hosts bearing fungi that were not recorded as growing upon 
them in the previous lists. The numbers attached to these are 
those under which the fungi were enumerated. The name of 
the collector is given except in those cases in which the writer is 
also the collector. 
The collections that have furnished the basis for this list have 
mostly been derived from two sources: the vicinity of Racine 
and several vacation trips of a few days each in the northern 
part of the state. As the first mentioned territory had already 
been gleaned for the two preceding lists, it may be assumed 
that the species from that locality are rare or scarce or that 
they are only occasionally, or at most locally abundant. The 
fluctuations of the fungus flora are striking and it will doubt¬ 
less be an interesting field for the ecologist. The observations 
