The Ohio ^£aturalist, 
PUBLISHED BY 
The Biological Club of the Ohio State University. 
Volume XI. JUNE, 1911. No. 8. 
TABLE OF CONTENTS. 
Overholts— The Known Polyporaeeae of Ohio 353 
Niswonger — Two Species of Diptera of the Genus Drosophila 374 
Bembower — Pollination Notes from the Cedar Point Region 378 
Wells— Meetings of the Biological Club 384 
THE KNOWN POLYPORACEAE OF OHIO . 1 
L. O. Overholts. 
The purpose of the present paper is to give a list of the Poly- 
poraceae that have been reported from Ohio. While it is highly 
probable that some species have been overlooked, yet the list is 
as complete as could be made from the literature at hand. The 
floral literature of Ohio is singularly wanting in published lists of 
our fungi. Perhaps no Basidiomycetes are more difficult to iden- 
tify than those annual forms of the Polyporaeeae which have the 
white pileus and white context. Even our best mycolygists have 
trouble in distinguishing them. More than half of the species listed 
have been collected in the Miami valley by the writer and others 
connected with the Department of Botany of Miami University. 
The nomenclature followed is that of Mr. W. A. Murrill in his 
monograph of the family. The most generally used synonyms 
have been added to correlate this paper with other writings on 
the family. A bibliography of the best American and foreign 
literature has been appended and an effort has been made to cite 
as many illustrations as possible. The paper has been prepared 
with the hope that a number of persons will become sufficiently 
interested to do collecting in various parts of the state. From 
such the writer would be glad to receive specimens, and will 
determine all sent to him for that purpose. Any species not 
included in this list and those marked as doubtful, are especially 
wanted for examination. 
The writer wishes to express his thanks to all who have aided 
in the preparation of the paper. Especial thanks are due to 
the Lloyd Brothers of Cincinnati, for free access to the liter- 
ature contained in the Lloyd library; to Mr. C. G. Lloyd for his 
determinations and verifications and for access to his excellent 
herbarium; to Mr. W. A. Murrill for determinations and verifi- 
cations and to Dr. Bruce Fink under whose direction the work 
has been done. 
1 Contributions from the Botanical Laboratory of Miami University. V. 
