896 



I. FILICES. 



Sporangia ex posed by 



the removal of one 

 valve of the indiudum 



rttri* 

 Transverse section of rachU. 



Ifymenoj 'liyllii in. 

 Sporangium set n 

 in front (mag.)- 



ii ,11/111, ii, a. 

 Portion of fructiferous frond 



1'ttrii aquilina. 

 Prothnllug developed. (Thtirct.) 



rteris. 



Indnsiuni laid open to show the 

 insertion of the sporangia. 



Fieri* aquilina. Anthcridia 

 and antherozoids. ( 1 hurut. ) 



Jferit aquilina. 

 Antherozoids (mag.). (Tlmret.) 



