Tab. YU. 



A. Gleichenia revoluta, H. B. K. — p. 7. 



Fig. 1. Fertile segment, under side ; magnified. Fig. 2. Por- 

 tion of a frond; nat. she. 



B. Gleichenia Mathewsii, Hook. — p. 9. 



{"■ig. 1. Fertile segment; mayntfied. Fig. 2. Portion of a 

 frond ; nat. size. 



