IOWA ACADEMY OF SCIENCES. 225 



Taxodium Distichum, Rich. In swamps forming charac- 

 teristic areas known as cypress swamps. Scattered 

 here and there through the tiatwoods. 



AcROSTicHUM AuREUM, L. Mycrs (543). Salt marshes. 

 Forms large bunches four to eight feet high. 



PoLYPODiuM Incanum, Sw. Mjci's (537). On trunks of 

 trees in sphagnum bay head. 



PoLYPODiuM Phyllitides, L. Mycrs (538). On trunks of 

 trees in sphagnum bayhead. 



PoLYPODiuM AuREUM, L. Myers and Alva (539), Marco. 

 Epiphytic. No. 589 on cabbage palmetto in palmetto 

 hammock. Called Rabbit's foot fern on account of 

 its densely villous rhizomes. 



ViTTARiA Line ATA, R. Br. Alva (544), Myers. Epiphytic 

 upon trunks of cabbage palmettos in palmetto ham- 

 mocks (No. 544). 



Pteris Aquilina, L. Myers (546), Marco. Around ponds 

 and swamps. 



Blechnum Serrulatum, Michx. Myers (545), Marco. 

 Around ponds, among the palmettos. 



WooDWARDiA ViRGiNicA, Willd. Myci's (540). Around 

 ponds among the palmettos. 



AspiDiuM Thelypteris, Sw. Myers (047). Along river 

 bank and around ponds and bayheads. 



Nephrolepis Exaltata, Schott. Myers (542), Marco. Bay- 

 heads. 



OsMUNDA Regalis, L. Mycrs. Ditches and swamps. 



OsMUNDA Cinnamomea, L. Mycrs (541). Ditches and 

 swamps. 



Lycopodium Caroline anum, L. Myers. Sphagnum 

 swamps. 



AzoLLA Carolineanum, Willd. Myers (548). Floating on 

 rivers and ponds. 



