[Chap. XLIX FERNS, CLUB MOSSES AND EQUISETUMS 677 



Small, J. K. Ferns of Tropical Florida. Published by the author. 1918. 

 Smith, G. M. Cryptogamic Botany. Vol. 2. McGraw-Hill Book Company, Inc. 



1938. 

 Wherry, E. T. Guide to Eastern Ferns. The Science Press Printing Company. 



1937. 



