- 3 8- 



Phegopteris tetragona Fee. Limestone region of Southern 

 Florida. 



Nephrolepis cxaltata Schott. Sword kern. Southern Florida 

 on palmettos or in soil. 

 Nephrolepis acuta Presl. Sword fern. On the southeast coast. 

 Marsiliaceae. 



Marsilia vestita Hook, and Grev. Found in one locality in 

 Central Florida. 



Salvtniaceae. 



Azolla Caroliniana Willd. Water eern. Found floating on still 

 water. Not uncommon. 



LYCOPODIACEAEr 



Lycopodium alopecuroides L. Foxtail Club moss. Common in 

 moist pine barrens, the variety pinna turn often found with the 

 type. 



Lycopodium alopecuroides adpressum Chapm. Common in 

 moist or occasionally dry soil. 



Lycopodium Carolinianum L. Common in moist pine barrens. 



Lycopodium cernuum L. Stag Horn Club moss. Occasional 

 on moist banks, especially in deep ditches, from Central Florida, 

 northward. 



PSILOTACEAE. 



Psilotum triquetrum Sw. Occasional in Central Florida. 

 Selaginellaceae. 



Selaginella apus Spring. Creeping Selaginella. Not uncom- 

 mon in moist places. 



Selaginella Ludoviciana R. Br. Found by me in a low wood- 

 land at Cliallahoochee, near the northwest border. 



Selaginella arcnicola Underw. Dry sand barrens of Central 

 Florida. 



ISOETACEAE. 



lsoetes Haccida Shuttlew. Shaded and somewhat miry spots. 

 Not common. 

 lsoetes Haccida rigida Engelm. Lake Flirt. 



