48 
IOWA ACADEMY OF SCIENCE 
Wisconsin species, and within sixteen of the number recorded by Dr. 
Underwood for Indiana.^" 
The only previous publications devoted to the parasite fungi of Payette 
county are two papers by Dr. Bruce Fink^" in which he enumerates the 
Erysiphaceae collected by him. According to the arrangement followed 
by Salmon and adopted by Andersonf the total number of forms was 
twenty-one infecting fifty-four hosts. The larger part of these were re- 
collected and additions made to the list. The hosts common to both my 
own and Dr. Fink’s collections have been marked with a star ("') while 
those species which were not recollected are included without a serial 
number and the additional hosts given in the notes under the various 
species. 
While consistency has not been attempted in the matter of nomencla- 
ture the species are named in accordance with the later available litera- 
ture of the various groups. The Erysiphaceae follow Anderson’s paper 
in the use of Salmon’s classification, although some of his conclusions do 
not appeal to me as satisfactory disposition of certain forms. The order 
3Ioniliales is treated in accordance with Pound and Clement’s '^Kear- 
rangement of the North American Hyphomycetes. This eliminates 
Bematiaceae from consideration, placing all the forms usually considered 
as belonging to this family in Moniliacem. The families differ only 
in color, a character which has been shown to be a matter of nutrition 
more than an inherent character of taxinomic importance. This arrange- 
ment brings the closely related genera Didy minium, Eamularia, and Ger- 
cospora in close proximity and eliminates Cercosporella for the light 
colored species of Cercospora. The TJrediniales follow the classification of 
Dr. Arthur’s monographf in so far as it is available. This causes a 
division of certain genera of the Melampso7^aceae and the removal from 
Puccinia and TJromyces of certain species which show a closer relation- 
ship with Bavenelia. The nomenclature of hosts is that of the seventh 
edition of Gray’s Manual, with citations in the several instances of such 
names as are not the same in Britton’s Manual. Under each species are giv- 
en such notes on appearance, frequency, and abundance as might be of 
interest to mycologists, or of assistance to the student who is interested 
*Trelease, Trans. Wis. Acad. 6: (1-40). 1884. (268 species.) 
Underwood Proc. Indiana Acad. Sci. 1893:30-67. 1894. (261 species of 
parasitic Fungi.) 
*Blights, Orchids, and Ferns of Payette, Iowa. Bull. Upper Iowa Univ., Jan. 
1894. Additions to Iowa Flora Proc. Iowa Acad. Sci. 14:103, 104. 1893. 
tProc. Iowa Acad. Sci. 14:15-46. 1907. 
*Minn. Bot. Studies 1:644-673, 726-738. 1896-97. 
tNorth American Flora. 7:83-169. 1907. 
