cv^^iorii.Kis. l',>:] 



(iENU8 XIII. 



CYSTOPTEIIIS. Bernhardi. 



Caudex tufted, (Icciimbont, or creeping. Fronds membrana- 

 ceo-herbaccons and bipinnatc or tripinnate. Sori indusiate, 

 rotundatc, witli the receptacles medial and dot-like. Tiidusiuni 

 concave. Fronds delicate. 



There are three Hritish species, naiuc-ly, ('. fra(/i7is^ ( '. rtf/ia, 

 and ('. mo n tana. 



