Thelypteris kunthii

Pelazoneuron kunthii, synonyms Christella normalis and Thelypteris kunthii, sometimes known as Kunth's maiden fern or southern shield fern, is the most common of the maiden ferns in the southeastern United States south of the fall line. It ranges westward to eastern Texas. It usually grows in moist to dry terrestrial situations, but can also be epipetric. It often grows as a greenhouse escape in areas north of its usual range....read more on Wikipedia.