EXPLANATION OF THE PLATES. 

 Plates XXXVII-XLI. — Narrow-Leaved Chain-Fern. Lorinseria 

 areolata. Plate XXXVII. — 1-7. Young leaves and plants in different stages 

 of development, i. Young plant attached to prothallus. Plate XXXVIII. — i. 

 Mature sterile leaf. 2. Section of pinna of mature sterile leaf, X 2^. Plates 

 XXXIX, XL. — Leaves intermediate between the mature sterile and fertile 

 leaves. Plate XLI. — i. Mature fertile leaf. 2. Section of fertile pinna, 

 X ai 



