Tab. IV. 



A. Gleichenia Bancroftii, Hook. — p. 5. 



Fig. 1. Fertile pinna; nat. size. Fig. 2. Upper side of a ])or- 

 tion of ditto ; magnified. Fig. 3. Under side of a segment 

 of ditto; more magnified. 



B. Gleichenia excelsa, J. Sm. — p. 5. 



Fig. 1. Fertile pinna; nat. size. Fig. 2. Under side of a seg- 

 ment of ditto; magnified. Fig. 3. Upper side of a portion 

 of a pinna; magnified. 



