232 
FOURTEENTH REPORT. 
A PRELIMINARY HOST INDEX OF THE FUNGI OF MICHIGAN, 
EXCLUSIVE OF THE BASIDIOM YOETES. AND OF 
THE PLANT DISEASES OF BACTERIAL AND 
PH Y S IOLOGI C A L ORIGIN. 
G. If. COONS, RESEARCH ASSISTANT IN PLANT PATHOLOGY MICHIGAN AGRICUL- 
TURAL COLLEGE. 
For some time the need for a rearrangement of the lists of the fungi 
known to occur in Michigan has been felt. Moreover while the large col- 
lection of fungi at Ann Arbor had been listed and the records made 
available, the collection at the Michigan Agricultural College has never 
been listed and for the most part the records were unavailable for use 
in determining species and reporting range. 
In the winter of 1012 1 set about examining the herbarium of the 
College, and decided instead of publishing a mere supplementary list 
of unreported species, to incorporate the lists already published by 
Pollock and Kauffman. '05, into the records of the College and get out 
a provisional Host Index. Lack of time required that the Smuts, Rusts 
and the higher Basidiomyeetes be excluded but it is Imped that this 
additional work can soon be done. W ith this list of the fungi, there has 
also been incorporated a list of the bacterial diseases of plants and a 
list of the physiological and obscure diseases, so far as they are repre- 
sented by specimens or reported in. an authentic way. This last addi- 
tion is thought to be a matter of convenience, since many of these ob- 
scure diseases present puzzling symptoms, or are apt to be confused with 
the first stages of diseases of fungous origin. 
Tlie collection id' fungi in this state began about 1885, with the work 
of Spalding at Ann Arbor and of Beal at M. A. C. The greater part 
of the collections at M. A. <’., were made by Gilbert H. Hicks, instructor 
in Botany from 1800 to 1895, and his accurate determinations give 
authority to the lists now published. Working about the same time 
with Hicks, but at Ann Arbor, L. X. Johnson amassed and named the 
greater part of the fungi reported by Pollock and Kauffman in 1905. 
These men, Hicks and Johnson, were in close touch with each oilier, 
exchanging specimens, and they also were esteemed correspondents of 
the eminent mycologists of America. Ellis, Peck and Farlow. <\ 
F. Wheeler well known for his extensive work on the higher plants of 
the state contributed many specimens and records, and P>. (). Long- 
year. ’02. gave impetus to the listing of the fungi of the state by publish- 
ing his Preliminary List of the Saprophytic Fungi of Michigan, a work 
which has been carried out to great completeness for the Hymen- 
omvcetes by Dr. G. H. Kauffman, of the University of Michigan. These 
lisfs published annually in the Reports of the Michigan Academy of 
Science have added immensely to the knowledge of the flora of the state 
as well as aroused great interest in the lower forms. Along with these 
lists the last three reports by Kauffman have contained helpful, work- 
