The woods, marshes and swamps of the George Washington Memorial Parkway (GWMP) provide habitat for 28 extant species of ferns and seven other vascular crytograms such as horsetails, quillworts and lycopoid clubmosses. Six additional species of ferns historically documented from GWMP are now belived to be extripated along with the spikemoss, Selaginella rupestris.
Did You Know?
Great Falls Park is the northernmost site of the George Washington Memorial Parkway. One of the nation's first canals can be seen here. More...