96 Journal of the Mitchell Society [Ju7ie 



Lycopodium prostratum 



Lyeopodium adpressuin 



Lyeopodiiim carolinianum 



Selagiiiella apus (Little-clubmoss) 



Selaginella ludoviciana 



Selaginella acanthonota (Resurrection-plant) 



Selaginella arenicola 



Isoetes flaccida (Quilhvort) 



These ferns occupy, for the most part, temperate and sub-tropical 

 Florida.^ The plants are predominantly terrestial. Some kinds, how- 

 ever, are aquatics ; others are amphibious. Many kinds prefer as a 

 habitat what we commonly call soil, others grow best on exposed rock, 

 while a few seem to thrive luxuriantly in "peat," 



The lowland kinds reach Florida along the Atlantic Coastal Plain, 

 while the highland species extend southward from the mountains or 

 from the Piedmont region along the hills and ridges and through the 

 river-valleys of western Georgia and eastern Alabama. The tj^pically 

 lowland kinds, the majority of the species of the above list, often 

 range far southward in the peninsula, while the ranges of the highland 

 species generally end in northern Florida or in the upper part of the 

 peninsula, for example: Athyrium Filix-foemina, Dryopteris hexagon- 

 optera, Polystichum acrostichoides. 



The tropical elements, comprising, as they do, about two-thirds of 

 the species, furnish the more varied and consequently the more in- 

 teresting fern-plants of our range. They are represented by : 



Oi>hioglossum tenerum (Adder 's-tongue) 

 Cheiroglossa palmata (Hand-fern) 

 Triehomanes lineolatum (Filmy-fern) 

 Triehomanes punetatum 

 Triehomanes Kraussii 

 Actinostaehys Germani (Curly-grass) 

 Anemia adiantifolia (Flowering-fern) 

 Ceratopteris pteridoides (Floating-fern) 

 Ceratopteris deltoidea 

 Stenochlaena Kunzeana (Holly-fern) 

 Acrosticlium aureum (Leather-fern) 

 Acrostiehum excelsum 

 Polypodium Plumula (Polypody) 

 Polypodium peetinatum 

 Polypodium polypodiodes (Resurrection-fern) 



^Includes particularly all the state, except the Everglade Keys, the Cape Sable region, 

 and the Florida Reef. The ferns have been considered in "Ferns of Tropical Florida," 

 i-ix, 1-80, 1918, and "Ferns of Royal Palm Hammock," i-vii, 1-38, 1918, and incidentallv 

 in papers published in the journal of The New York Botanical Garden from 1904 to 1920. 



