Tab. XIX. 

 A. Alsophila australis, Br. — p. 50. 



Fig. 1. Fertile pinna; nat. size. Fig, 2. Portion of a pinnule 

 of the same, magnified. Fig. 3. Sorus ; more magnified. 



B. Alsophila aspera, Br. — p. 39. 



Fig. 1, 2. Fertile pinna; nat. size. Fig. 3. Segment of ditto, 

 under side ; magnified. 



