PROCEEDINGS OF THE OHIO STATE ACADEMY OF SCIENCE. 

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



The Pteridophytes 

 of Ohio 



BY 



JOHN H. SCHAFFNER 



BoTANiCAi, Department, Ohio State Uxivkrsity. 



Publication Committee. 



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



Date of Publication, Jan, 5, 1910. 



Published by the Academy, 

 Columbus, Ohio. 



