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Family: Dryopteridaceae
  Genus: Cystopteris

    Cystopteris bulbifera (L.) Bernh.*+
        bladder fern, bulblet bladder fern, bulblet fragile fern
             Filix bulbifera (L.) Underw.
             Polypodium bulbiferum L.
    Cystopteris fragilis (L.) Bernh.*+
        bladder fern, brittle bladder fern, northern fragile fern
             Cystopteris dickieana Sim
             Cystopteris fragilis (L.) Bernh. subsp. dickieana
             Cystopteris fragilis (L.) Bernh. var. angustata Lawson
             Cystopteris fragilis (L.) Bernh. var. fragilis
             Cystopteris fragilis (L.) Bernh. var. woodsioides H.Christ
             Filix fragilis (L.) Gilib.
             Polypodium fragile L.
  Genus: Dryopteris

    Dryopteris carthusiana (Vill.) H.P.Fuchs*+
        spinulose wood fern, toothed wood fern
             Aspidium spinulosum (O.F.Mll.) Sw.
             Dryopteris austriaca (Jacq.) Woyn. var. spinulosa (O.F.Mll) Fiori
             Dryopteris spinulosa (O.F.Mll.) Watt
             Polypodium carthusianum Vill.
             Polypodium spinulosum O.F.Mll.
             Thelypteris spinulosa (O.F.Mll.) Nieuwl.
    Dryopteris cristata (L.) A.Gray*+
        crested shield fern, crested wood fern
             Aspidium cristatum (L.) Sw.
             Polypodium cristatum L.
             Thelypteris cristata (L.) Nieuwl.
    Dryopteris filix-mas (L.) Schott*+
        male fern
             Polypodium filix-mas L.
    Dryopteris fragrans (L.) Schott*+
        fragrant fern, fragrant wood fern
             Dryopteris fragrans (L.) Schott var. remotiuscula Kom.
             Thelypteris fragrans (L.) Nieuwl.
             Thelypteris fragrans (L.) Nieuwl. var. hookeriana Fernald
             Polypodium fragrans L.
    Dryopteris marginalis (L.) A.Gray*+
        marginal shield fern, marginal wood fern
             Aspidium marginale (L.) Sw.
             Polypodium marginale L.
             Thelypteris marginalis (L.) Nieuwl.
  Genus: Gymnocarpium

    Gymnocarpium dryopteris (L.) Newman*+
        common oak fern, western oak fern
             Dryopteris disjuncta (Rupr.) C.V.Morton
             Dryopteris dryopteris (L.) Britton
             Dryopteris linnaeana C.Chr.
             Lastrea dryopteris (L.) Bory
             Polypodium dryopteris L.
             Phegopteris dryopteris (L.) Fe
             Thelypteris dryopteris (L.) Sloss.
    Gymnocarpium robertianum (Hoffm.) Newman*+
        limestone oak fern, scented oak fern
             Dryopteris robertiana (Hoffm.) C.Chr.
             Gymnocarpium dryopteris (L.) Newman var. pumilum (DC.) B.Boivin
             Polypodium robertianum Hoffm.
             Phegopteris robertiana (Hoffm.) Fe
             Thelypteris robertiana (Hoffm.) Sloss.
  Genus: Polystichum

    Polystichum lonchitis (L.) Roth*
        northern holly fern
             Polypodium lonchitis L.
  Genus: Woodsia

    Woodsia obtusa (Spreng.) Torr. subsp. obtusa*+
        blunt-lobe cliff fern, blunt-lobed woodsia
             Polypodium obtusum Spreng.
Family: Polypodiaceae
  Genus: Polypodium

    Polypodium virginianum L.*+
        common polypody, rock-cap fern, rock polypody
             Polypodium vinlandicum A.Lve & D.Lve
             Polypodium vulgare auct. pro parte, non L.
             Polypodium vulgare L. var. americanum Hook.
             Polypodium vulgare L. var. virginianum (L.) D.C.Eaton
Family: Thelypteridaceae
  Genus: Phegopteris

    Phegopteris connectilis (Michx.) Watt*+
        Narrow beech fern, northern beech fern
             Dryopteris phegopteris (L.) C.Chr.
             Polypodium connectile Michx.
             Polypodium phegopteris L.
             Phegopteris polypodioides Fe
             Thelypteris phegopteris (L.) Sloss.
    Phegopteris hexagonoptera (Michx.) Fe*+
        broad beech fern, southern beech fern
             Dryopteris hexagonoptera (Michx.) C.Chr.
             Polypodium hexagonopterum Michx.
             Thelypteris hexagonoptera (Michx.) Nieuwl.

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