Blechnum serrulatum
Common Name(s): Swamp fern, toothed mid-sorus fern
Native to Florida
Swamp fern is a common native to the swamps, marshes, wet prairies and hammocks of the Florida peninsula. It blooms all year (Wunderlin, 2003).
There are seven species of Blechnum in the U.S. This species occurs only in Florida (Kartesz, 1999).