MICHIGAN ACADEMY OF SCIENCE. 
(Y.i 
UNREPORTED MICHIGAN FUNGI FOR 1907, WITH AN OUTLINE 
OF THE GASTEROMYCETES OF THE STATE. * 
C. H. Kauffman. 
During the past season an effort was made to obtain as complete a know- 
ledge as possible of the mushrooms growing within reach of Ann Arbor. 
The weather conditions at Ann Arbor were so favorable to the development 
of these fungi that the material obtained was little short of overwhelming; 
so that it is possible to add over a hundred species to our state Flora. Several 
excursions were made into the neighboring counties, but the wealth of forms 
which appeared at home, forbade the wasting of any time on unfamiliar 
localities. The experience of former years had seemed to show a scarcity 
of species in this region, supposedly because of the lack of extensive forests 
and the effect of keeping woodlots free from logs and debris and using them 
for pasture. These are still to be considered important influences on dis- 
tribution. When, however, the effect of thus removing the moisture-holding 
substances from the woods is overcome by a sufficiently abundant and con- 
tinuous rainfall, the mycelium, which still seems to hold its own in these 
places, suddenly becomes vigorous and fruit-bodies spring up in surprising 
quantities. Even then, however, there is a decided local distribution. Oak 
openings with the proper amount of ground moisture were teeming with 
Boleti and Russulae in the middle of summer; wooded hillsides with tiny 
rivulets seeping through their sides were literally covered in spots with 
Cortinarii. The forms which grow on rotten wood, attained their best de- 
velopment in low swampy woods in which debris had been allowed to accu- 
mulate. Many low woodlots in which cattle were kept were almost without 
any mycologic flora of the mushroom type, as were also such as had too 
rank a covering of grass. 
The paper is composed of two sections: First, the list of unreported fungi; 
second, a preliminary outline of the puff ball group. 
A more extended notice of all the Basidi'omycetes collected will be given 
in the report to the State Geological and Biological Survey under whose 
auspices the work was continued. 
My thanks are due to Prof. G. F. Atkinson and Prof. C. H. Peck for various 
determinations referred to in the text. Dr. E. J. Durand kindly examined 
some of the Discomvcetes. I am also under obligations to some of my 
students for specimens collected by them. 
ASCOMYCETES. 
Pezizacecie. 
Barlaeina miniata (Cr.) Sacc. Ground in Woods. Washt. Co. May 8, 
fide Durand. (Syn. Plicariella miniata.) 
Geopyxis carbonaria (A. and S.) Durand. Washt. Co. fide Durand. 
Lachnea setosa Nees. On rotten logs. Washt. Co., Nov. 9, fide C. H. Iv. 
Peziza orthotrica B. and C. On ground among Polytrichum. Washt. Co. 
fide C. H. K. 
♦Contribution No. 97 from the Botanical Department of the University of Michigan. 
