

viii CONTENTS. 
GENUS XI.--PTERIS : 
The Common Brakes (Pteris aquilina) . 
GENUS XII.— ADIANTUM : 
The Common Maidenhair (Adiantum Capillus- Veneris) . 
GENUS XIII.--CYSTOPTERIS : 
The Brittle Bladder Fern (Cystopteris fragilis) 
The Alpine Bladder Fern (Cystopteris regia) 
The Mountain Bladder Fern (Cystopteris montana) . 
GENUS XIV.—WooDSIA : 
The Oblong Woodsia (Woodsta ilvensis) 
The Alpine Woodsia (Woodsia alpina) 
GENUS XV.—TRICHOMANES : 
The European Bristle Fern (Trichomanes radicans) . 
GENUS XVI.—HYMENOPHYLLUM : 
The Tunbridge Film Fern (Hymenophyllum tunbridgense) . 
Wilson's Film Fern (Hymenophyllum unilaterale) . 
Genus XVII.—OSMUNDA : 
The Royal Fern (Osmunda regalis) 
GENUS XVIIT.—BOTRYCHIUM : 
The Common Moonwort (Botrychiwm Lunaria) 
Genus XIX. —OPHIOGLOSSUM : 
The Common Adder's Tongue (Ophioglossum vulgatum) . 
The Dwarf Adder's Tongue (Ophioglossum lusitanicum) 
ADDENDA 

