EXPLANATION OF THE PLATES. 



PLATES II-III. MAIDENHAIR. Adiantum pedatum. Plate II. i. 

 Young plant attached to prothallus. 2-8. Young leaves in early stages of 

 development. Plate III. 9-11. Leaves in later stages of development. 12. 

 Fertile leaflet of mature leaf, X 2^. 



