IIsTIDEX: 
TO THE 
GENERA AND SPECIES OF DERBYSHIRE FERNS, 
AS ARRANGED IN THIS BOOK. 
Page 
Athyrium Filix-Foemina . 1 
•-Filix-Foemina. Var: Irriguum . 2 
Lastrea Filix-Mas . 3 
-Dilatata . 4 
-Spinuiosa. 5 
-Oreopteris . 6 
Polypodium Yulgare . 7 
— -Phegopteris . 8 
--Dryopteris . 9 
-Calcareum .... 10 
Polystichum Angulare . 11 
-Aculeatum...;. 12 
Blechnum Boreale. 13 
Pteris Aquilina... 14 
Cystopteris Fragilis. 15 
Asplenium Adiantum-nigrum . 16 
--Tridhomanes. 17 
— -Yiride . 18 
-Buta-Muraria . 19 
Ceteradh Officinarum . 20 
Scolopendrium Yulgare . 21 
Osmunda Kegalis. 22 
Botrychium Lunaria .. 23 
Ophioglossum Vulgatum . 24 
(Hymenophyllum)...;. viii 
(Cryptogramma crispa) . viii 
