CYSTOPTERIS. 



73 



Of the species enumerated by Sir "W. Hooker^ crenata, 

 Douglasiif albescens^ squamata, and Tasmania, are not yet 

 cultivated in England. 



Sir W. Hooker remarks on the doubtful species — 



Cystopteris obtusa, Presl, is Woodsia obtusa, Hooher. 



" obovata, Presl, is Asplenium obovatum, Viviani. 



" atomaria, Presl, is Cystopteris fragilis, Muhlenberg. 



*' emarginata, Presl, name only known. 



" leptophylla, Presl, Cystopteris fragilis. 



*' atrovirescens, Presl, name only known. 



" vestita, Presl, is Woodsia incisa. Gillies. 



'' odorata, Presl, is a Lastrea. 



" Brasiliana, Presl, name only known. 



" gigantea, Presl, is Diacalpe aspidioides, Blume. 



" comosa, Presl, is Alsophila comosa, Hooher. 



" aspidioides, Presl, name only known. 



