Phillips and Praeger — The Ferns of Ulster. 5 



Asplenium lanceolatum being the only Irish Fern which does not occur in the 

 district.* Of these 32 species, five may be accounted extremely rare, having 

 been found in only one or two localities in the district ; these are : — 



Polypodium Bryopteris. 



Lastrea spinulosa. 



Adiantum Capillus- Veneris. 



Trichomanes radicans. 



Ophioglossum lusitanicum. 

 Five others may be called very rare, occurring as they do very sparingly in 

 the province : — 



Allosorus crispus. 



Polystichum Lonehitis. 



Lastrea TJielypteris. 



Asplenium viride. 



Eymenophyllum Tunbridgense. 

 Six more come under the head not common : — 



Polypodium Phegopteris. 



Lastrea Oreopteris. 



Cystopteris fragilis. 



Hymenophyllum Wilsoni. 



Osmunda regalis. 



Botrychium Lunaria. 

 Five under the head rather common : — 



Lastrea cemula. 



Polystichum aculeatum. 



Ceterach officinarum. 



Asplenium marinum. 



Ophioglossum vulgatum. 

 And finally, eleven under the head common, being plentifully distributed 

 through the district : — 



Polypodium vulgare. 



Lastrea Filix-mas. 



dilatata, 



Polystichum angulare. 

 Athyrium Filix-fcemina. 

 Asplenium Adiantum-nigrum. 



Trichomanes. 



Ruta-muraria. 



Scolopendrium vulgare. 

 Blechnum spicant. 

 Pteris aquilina. 



* It is confined to counties Cork and Kerry. 



