Netted Chain Fern
Netted chain fern, Woodwardia areolata, is found in many places in the Eastern United States as well as along the Gulf Coast. Not reported elsewhere in the world.
iNaturalist.org map of W. aerolata
W. aerolata is one of the very few species where the veneration is 'netted' instead of constantly branching. Another species common in New England is Onocela sensibilis, Sensitive Fern.
It is pinnate-pinnatifid.
Closeup of netted veins