A 1)1 A NTT M. 11.; 



GENUS XII. 



ADIANTUM. LiNNmrs. 



Fronds simple to supra-decompound. Stipites and rachides 

 ebencous. Sori indusiate, transverse marginal, from linear to 

 rcniform. 



Veins repeatedly forked. 



The spore-cases are attached to the surflice of the indusium, 

 and resupinate. 



iSIr. Moore in his "Species Filicum" enumerates one hundred 

 and twenty-six species. 



A very large family, yet only one British species. 



