I. FILICES. 



895 



Lygodium palmalum. 



Polystichum. 

 Portion of fructiferous frond. 



Polystichum aculeatum. 

 Transverse section of rachis. 



Osmunda regalis. 

 Transverse section of rachis. 



Cheilanthes odora. 



Transverse section of 



rachis. 



Osmunda. 

 Sporangium ' (mag.) . 



Todea africana. 

 Sporangium (mag.). 



Scolopendrium officinale. 



Transverse section of 



rachis. 



Gleichenia, 



Portion of 



fructiferous frond. 



Osmunda regalis. Portion of frond. 







Gleichenia 



polypodioides. 



Transverse section 



of rachis. 



Gleichenia. 

 Sporangium (mag.)- 



Gleichenia. 



Fructiferous pinnae 



(mag.). 



Aspidivm. 



Portion of fructiferous 

 frond. 



1 The annulus should have been represented as more oblique. ED. 



