120 FERNS OF THE LAKE COUNTRY 



JJunaria L., lunar, lunate (referring to the crescent-like 



shape of the pinna?). 

 CETEEACH OFFICINAETJM 



Ceterach, corruption of CTietTierak, Arabic or Persic (mean- 

 ing not known). 



officinarum of officina L., officinal (used in medicine). 

 CYSTOPTEBIS FBAGILIS 



Tcystos &., a bladder ; pteris G., a fern. 



fragilis L., fragile, brittle. 

 HYMENOPHYLITTM UNILATERALE 



hymen &., a membrane or film ; phyllon (?., a leaf. 



unilaterale L., one-sided. 

 LASTEEA JSMITLA 



Lastrea, the Latinized name of M. de Lastre. 



cemula L., emulating, rivalling. 



cristata L., crested. 



dilatata L., dilated, spread out, broad. 



Filix-mas L. t filix, fern ; mas, male or mascu- 

 line. 



montana L., mountain-growing. 



remota L., remote. 



rigida L., rigid. 



spinulosa L,, spinulous, prickly-toothed. 



Thelypteris Q-., thelys, feminine ; pteris, a fern. 

 OPHIOGKLOSSTTM vtrLGATtrst 



opTdos G., a serpent or adder ; glossa (?., a tongue. 

 vulgatvm L., common. 

 OSMUNDA EEOALIS 



Osmunda, derivation and meaning unknown. 

 regalis L., royal. 

 POLYPODITTM CALCABEtJM 



polys <?., many j pous &., a foot : many-footed. 

 calcareum L., chalky, limestone-growing. 



Dryopteris &., drys, an oak ; pteris, a fern. 



Phegopteris <?., pTiegos, a beech ; pteris, a fern. 



vidgare L., vulgar, common. 



