84 Wisconsin Academy of Sciences, Arts, and Letters. 
in northern Wisconsin are too limited to allow much comment 
on the distribution or the abundance of the species. 
In addition to those whose assistance has been acknowledged 
in the previous supplementary lists, I wish to thank Dr. J. 0. 
Arthur of Lafayette, Indiana, for the determination of some 
of the Uredineae. Renewed thanks are due the veteran mycolo¬ 
gist, Mr. J. B. Ellis, of Hewfield, Hew Jersey. 
The writer hopes to assist in the 1 further extension of the 
recorded parsitic fungus flora of Wisconsin, and would be 
glad to have the aid of collectors. 
J. J. Davis. 
Racine, Wisconsin, January, 1903. 
i 
Jf fk,,,: 
). . " 
ADDITIONAL HOSTS. 
Fungi occurring on hosts other than those upon which they 
were reported in the previous lists. 
10. Peasmopara haestedii^ (Earl.) Berl. and De Toni. 
On Erechtites hieracifolia, Raf. Wind Lake. 
On Helianthus sp. Racine and Kenosha county. 
On the sunflowers, it sometimes appears' as early as 
the latter part of Mlay and does considerable damage 
to the host plants. 
15. Bremia eactucae, Regel. 
On Lactuca leucophaea, Gray. Racine. 
17. Perojstospora pote'jmtillae, DBy. 
On Geum macrophyllum, Willd. Wind Lake. 
20. Peronospora effusa, (Grev.) Rabh. 
On Chenopodium hyhridum, L. Racine. 
22. Feronospora caeotheca, DBy. 
On Galium lanceolatum, Torr. Genoa Junction. 
