PROCEEDINGS OF THE OHIO STATE ACADEMY OF SCIENCE. 

 Volume V, Part 5, Special Paper No. 16. 



The Pteridophytes 

 of Ohio 



BY 



JOHN H. SCHAFFNER 



Botanical Dkpartment, Ohio Stat?: University. 



LIBRARY 



NEW YORK 

 BOTANICAL 



QARDBN. 



Publication Committee. 



J. C. Hambleton. E. Iv. Rice. Bruce Fink, 

 D^TE OF Publication, Jan. 5, 1910. 



Published by the Academy, 

 Columbus, Ohio. 



