It’s a fern, of course. This one is quite common in the Southeast, stretching north into the Ohio River Valley and New England and west to eastern Texas. Southern grape-fern, Sceptridium biternatum, ...
(a) Sporophytes and (b) independent gametophytes. (c) Strap-like individual gametophytes under the microscope. Scale bar is 5.0mm. (d) Clonal forming (reproduction) by gametophytes under the ...