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I. FILICES. 



Atplenium. 

 Portion of fructiferous frond 



Folyfiodium. 

 Portion of fructiferous frond 



Atliantum. 

 Portion of fructiferous frond. 



Potypodiwn tulgare. 



Transverse section 



of rhizome. 



I'olypodium vulgare. 



Transverse section of 



base of nidus. 



rolypodium vulgart, 



Transverse section of 



middle of rachis. 



Atplenium Adiantum-niyrum. 



Dictfonia anlarctica. 

 Transverse section of rachis. 



Adiantnm 



trajteziforme. 



Transverse section 



of rachis. 



Aiplenium rhizophyllvm. Frond rooting at its extremity. 



