STATE OF ILLINOIS DEPARTMENT OF REGISTRATION AND EDUCATION 
Otto Kerner, Governor William Sylvester White, Director 
THE FILMY FERN IN ILLINOIS 
ROBERT A. EVERS 
_ Biological Notes No. 44 
Printed by Authority of the State of Illinois 
y 
April, 1961 NATURAL HISTORY 
| SURVEY DIVISION 
| 
Harlow B. Mills, Chief 
Urbana, Illinois 
