234 
FOURTEENTH REPORT. 
Prevalent in Michigan. Both were, from their nature, compilations but 
they embody many original observations of the authors and are illus- 
trated. for a large part at least, with original plates and figures. How- 
ever the lack of extensive collections and the absence of an extensive 
literature made many of the statements vague and some fungi and some 
diseases are reported for which there is no herbarium material, nor any 
definite statement of locality or collector. 
In the list following a very full citation of the localities and the dates 
of collection is given. This is largely to serve to identify a given col- 
lection. to hint the prevalence and the time of year the fungus is found. 
Of course the information is entirely too meager to permit any con- 
clusions, or to give any idea of the range. This Host Index may how- 
ever stimulate collections and it is hoped that this method of listing 
the species may help to make identifications more easy. The arrange- 
ment of hosts has followed the Michigan Flora (Beal, '05) with the 
cultivated plants interpolated in the proper families. This arrange- 
ment keeps closely related groups together and frequently a fungus 
which has not been listed upon one species will be given for a closely re- 
lated plant. 
In nomenclature for M. A. C. collections the names given in the North 
American Flora, insofar as that work has progressed, has been em- 
ployed. For the Erysiphaceae, Salmon, ’00, has been adopted, while for 
the Exoascaceae, the work of Atkinson ’95, and Patterson ’95, has been 
followed. The monograph of Wilson, ’07. has been followed for the 
Phycomycetes. For the remaining groups for which no recent compre- 
hensive treatment including American forms has appeared, the determi- 
nation unless otherwise stated is on the authority of the collector. All 
M. A. C. specimens have been inspected and it is hoped that the de- 
termination at least to genus is accurate. The men who have collected 
the material for the M. A. C. Herbarium (and for the University also) 
were close students of the Ellis and Everhart publications' and exsiccati, 
and such deviation from the names employed today may be expected in 
the list here given as is found in the names employed in the North. Ameri- 
can Fungi. For the University of Michigan collections the names and au- 
thorities given by Pollock and Kauffman (in the main the names given 
by Johnson) have been copied without attempt at transposition, ex- 
cept in the case of the groups covered by the North American Flora, 
or in cases where the name given is the one associated with a. conidial 
form for which the perfect form is now definitely known. 
It is hoped that this catalogue will make the collections of the Mich- 
igan Agricultural College available for those engaged in monographic 
work. Duplicates where possible, will be furnished, or at least the loan 
of collections will be gladly made. 
