Naming
The species epithet ''palustris'' is Latin for "of the marsh" and indicates its common habitat. It is the only known host plant for ''Fagitana littera'', the Marsh Fern Moth.References:
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Eastern Marsh Fern
Thelypteris palustris
''Thelypteris palustris'', the marsh fern, or eastern marsh fern, is a fern native to eastern North America and across Eurasia. It prefers to grow in marshy situations in full sun.
