PROCEEDINGS OF THE, OHIO STATE ACADEMY OF SCIENCE. 

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



The Pteridophytes 

 of Ohio 



BY 



JOHN H. SCHAFFNER 



BoT.\NiCAL Departmp:nt, Ohio State University. 



Publication Committee. 



J. C. Hambi^uton. E. ly. Rice. Bruce Fink, 



Date oe Pubi,ication, Jan. 5, 1910. 



PUBWSHED BY THE ACADEMY, 



CoiyUMBUS, Ohio. 



