a fern, Thelypteris palustris, having pinnatifid fronds and growing in wet places.
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How to use marsh fern in a sentence
Very common in woodlands, preferring a dryer soil than the marsh fern.
While the marsh fern loves moisture and shade it is sometimes found in dry, open fields.
Resembles the marsh fern, of which it was once thought to be a variety.
The fronds of the marsh fern are apt to be sterile in deep shade.
British Dictionary definitions for marsh fern
a fern of marshy woodlands, Thelypteris palustris, having pale green pinnate leaves and an underground rootstock
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012