Tab. CCCIV. 



AcRosTiCHTJM (Gymnopteris) tricuspe, Hook. — p. 272. 



Fig. 1 . Portion of a caudex, with sterile frond ; nat. size. Fig. 

 2. Fertile frond : nat. size. Fig. 3. Portion of a sterile 

 frond, showing the venation ; and Fig. 4, portion of a fer- 

 tile frond, with sorus, some of which is removed to show 

 the venation ; magnified. 



