| Common Name | Scientific Name | Code |
| n/a | Bolbitis quoyana (Gaudich.) Ching in C. Chr. | BOQU |
| n/a | Ctenitis dissecta (G. Forst.) Copel. | CTDI |
| n/a | Ctenitis subglandulosa (Hance) Ching | CTSU3 |
| n/a | Cystopteris ?illinoensis R.C. Moran [bulbifera ? tenuis] | CYIL |
| n/a | Cystopteris ?wagneri R.C. Moran [tennesseensis ? tenuis] | CYWA8 |
| n/a | Deparia prolifera (Kaulfuss) Hook. & Grev. [excluded] | DEPR5 |
| n/a | Diplazium maximum (Don) C. Christens. [excluded] | DIMA71 |
| n/a | Diplazium woodwardioides (C. Presl) Morton | DIWO |
| n/a | Dryopteris ?australis (Wherry) Small (pro sp.) [celsa ? ludoviciana] | DRAU5 |
| n/a | Dryopteris ?benedictii Wherry [carthusiana ? clintoniana] | DRBE |
| n/a | Dryopteris ?boottii (Tuckerman) Underwood (pro sp.) [cristata ? intermedia] | DRBO2 |
| n/a | Dryopteris ?burgessii Boivin [clintoniana ? marginalis] | DRBU |
| n/a | Dryopteris ?correllii W.H. Wagner [carthusiana ? goldiana] | DRCO7 |
| n/a | Dryopteris ?dowellii (Farw.) Wherry [clintoniana ? intermedia] | DRDO2 |
| n/a | Dryopteris ?leedsii Wherry [celsa ? marginalis] | DRLE2 |
| n/a | Dryopteris ?mickelii J.H. Peck [goldiana ? clintoniana] | DRMI6 |
| n/a | Dryopteris ?neowherryi W.H. Wagner [goldiana ? marginalis] | DRNE2 |
| n/a | Dryopteris ?pittsfordensis Slosson [carthusiana ? marginalis] | DRPI2 |
| n/a | Dryopteris ?separabilis Small (pro sp.) [celsa ? intermedia] | DRSE2 |
| n/a | Dryopteris ?slossoniae Wherry ex Lellinger [cristata ? marginalis] | DRSL |
| n/a | Dryopteris ?triploidea Wherry [carthusiana ? intermedia] | DRTR |
| n/a | Dryopteris ?uliginosa (A. Braun ex Dowell) Druce [carthusiana ? cristata] | DRUL2 |
| n/a | Gymnocarpium ?brittonianum (Sarvela) Pryer & Haufler [disjunctum ? dryopteris] | GYBR2 |
| n/a | Gymnocarpium ?intermedium Sarvela [dryopteris ? jessoense] | GYIN |
| n/a | Heterogonium C. Presl | HETER22 |
| n/a | Heterogonium pinnatum (Copel.) Holttum | HEPI10 |
| n/a | Maxonia apiifolia (Sw.) C. Christens. [excluded] | MAAP6 |
| n/a | Maxonia C. Christens. | MAXON2 |
| n/a | Nephrolepis ?averyi C.E. Nauman [biserrata ? exaltata] | NEAV |
| n/a | Nephrolepis ?copelandii W.H. Wagner [cordifolia ? multiflora] | NECO11 |
| n/a | Nephrolepis ?medlerae W.H. Wagner [exaltata ? multiflora] | NEME7 |
| n/a | Nephrolepis acutifolia (Desv.) H. Christ | NEAC3 |
| n/a | Nephrolepis exaltata (L.) Schott ssp. hawaiiensis W.H. Wagner | NEEXH |
| n/a | Nephrolepis pectinata (Willd.) Schott [excluded] | NEPE5 |
| n/a | Polystichum ?hagenahii Cody [acrostichoides ? lonchitis] | POHA8 |
| n/a | Polystichum ?potteri Barrington [acrostichoides ? braunii] | POPO8 |
| n/a | Polystichum muricatum (L.) F?e [excluded] | POMU61 |
| n/a | Tectaria ?amesiana A.A. Eat. (pro sp.) [coriandrifolia ? fimbriata] | TEAM |
| n/a | Tectaria crenata Cav. | TECR2 |
| n/a | Woodsia ?abbeae Butters [ilvensis ? oregana] | WOAB |
| n/a | Woodsia ?gracilis (Lawson) Butters [alpina ? ilvensis] | WOGR |
| n/a | Woodsia ?kansana R.E. Brooks [obtusa ? oregana] | WOKA |
| n/a | Woodsia ?maxonii R. Tryon [oregana ? scopulina] | WOMA2 |
| n/a | Woodsia mexicana F?e [excluded] | WOME2 |
| acacia fringedfern | Lomariopsis sorbifolia (L.) F | LOSO |
| Ainahou Valley woodfern | Dryopteris subbipinnata W.H. Wagner & Hobdy | DRSU8 |
| akolea | Athyrium microphyllum (J. Sm.) Alston | ATMI |
| Alaska hollyfern | Polystichum setigerum (K. Presl) K. Presl | POSE5 |
| Aleutian holly fern | Polystichum aleuticum C. Christens. | POAL6 |
| alpine ladyfern | Athyrium americanum (Butters) Maxon | ATAM |
| alpine woodfern | Dryopteris wallichiana (Spreng.) Hyl. | DRWA |
| alpine woodsia | Woodsia alpina (Bolton) S.F. Gray | WOAL |
| Anderson's hollyfern | Polystichum andersonii Hopkins | POAN2 |
| annual swordfern | Nephrolepis undulata (Afzelius ex Sw.) J. Sm. | NEUN |
| Antilles hollyfern | Polystichum polystichiforme (F?e) Maxon | POPO7 |
| Antilles tonguefern | Elaphoglossum spathulatum (Bory) T. Moore | ELSP |
| Appalachian cliff fern | Woodsia appalachiana T.M.C. Taylor | WOAP |
| Appalachian oakfern | Gymnocarpium appalachianum Pryer | GYAP |
| Arachniodes chaerophylloides | Dryopteris chaerophylloides (Poir.) C. Christens. | DRCH2 |
| Arachniodes chaerophylloides | Polystichopsis chaerophylloides (Poir.) Morton | POCH4 |
| Arachniodes insularis | Arachniodes carvifolia auct. non (Kunze) Ching [misapplied] | ARCA15 |
| Arachniodes insularis | Rumohra carvifolia auct. non (Kunze) Ching [misapplied] | RUCA6 |
| Asian netvein hollyfern | Cyrtomium fortunei J. Sm. | CYFO |
| Asian oakfern | Gymnocarpium jessoense (Koidzumi) Koidzumi | GYJE |
| Asian oakfern | Gymnocarpium jessoense (Koidzumi) Koidzumi ssp. parvulum Sarvela | GYJEP |
| Asian swordfern | Nephrolepis multiflora (Roxb.) Jarrett ex Morton | NEMU |
| asplenium ladyfern | Athyrium filix-femina (L.) Roth ssp. asplenioides (Michx.) Hult | ATFIA2 |
| Athyrium americanum | Athyrium alpestre (Hoppe) Milde | ATAL4 |
| Athyrium americanum | Athyrium alpestre (Hoppe) Milde ssp. americanum (Butters) Lellinger | ATALA |
| Athyrium americanum | Athyrium alpestre (Hoppe) Milde var. americanum Butters | ATALA2 |
| Athyrium americanum | Athyrium alpestre (Hoppe) Milde var. gaspense Fern. | ATALG |
| Athyrium americanum | Athyrium distentifolium Tausch ex Opiz ssp. americanum (Butters) Hult | ATDIA2 |
| Athyrium americanum | Athyrium distentifolium Tausch ex Opiz var. americanum (Butters) Boivin | ATDIA3 |
| Athyrium filix-femina ssp. angustum | Athyrium angustum (Willd.) K. Presl | ATAN2 |
| Athyrium filix-femina ssp. angustum | Athyrium angustum (Willd.) K. Presl var. rubellum (Gilbert) Butters | ATANR2 |
| Athyrium filix-femina ssp. angustum | Athyrium angustum (Willd.) K. Presl var. subtripinnatum Butters | ATANS |
| Athyrium filix-femina ssp. angustum | Athyrium filix-femina (L.) Roth var. angustum (Willd.) Lawson | ATFIA4 |
| Athyrium filix-femina ssp. angustum | Athyrium filix-femina (L.) Roth var. michauxii (Spreng.) Farw. | ATFIM |
| Athyrium filix-femina ssp. angustum | Athyrium filix-femina (L.) Roth var. rubellum Gilbert | ATFIR |
| Athyrium filix-femina ssp. asplenioides | Athyrium asplenioides (Michx.) A.A. Eat. | ATAS |
| Athyrium filix-femina ssp. asplenioides | Athyrium filix-femina (L.) Roth var. asplenioides (Michx.) Farw. | ATFIA3 |
| Athyrium filix-femina ssp. cyclosorum | Athyrium alpestre (Hoppe) Milde var. cyclosorum (Rupr.) T. Moore | ATALC |
| Athyrium filix-femina ssp. cyclosorum | Athyrium angustum (Willd.) K. Presl var. boreale Jennings | ATANB |
| Athyrium filix-femina ssp. cyclosorum | Athyrium angustum (Willd.) K. Presl var. elatius (Link) Butters | ATANE |
| Athyrium filix-femina ssp. cyclosorum | Athyrium filix-femina (L.) Roth var. californicum Butters | ATFIC3 |
| Athyrium filix-femina ssp. cyclosorum | Athyrium filix-femina (L.) Roth var. cyclosorum (Rupr.) Ledeb. | ATFIC2 |
| Athyrium filix-femina ssp. cyclosorum | Athyrium filix-femina (L.) Roth var. sitchense (Rupr.) Ledeb. | ATFIS |
| Athyrium microphyllum | Asplenium multisectum Brack. | ASMU4 |
| Athyrium microphyllum | Asplenium vexans Heller | ASVE7 |
| Athyrium microphyllum | Athyrium baldwinii (Hbd.) C. Christens. | ATBA |
| Athyrium microphyllum | Athyrium poiretianum (Gaud.) K. Presl | ATPO4 |
| attu hollyfern | Polystichum microchlamys (Christ) Matsumura | POMI5 |
| bellybutton veinfern | Phanerophlebia umbonata Underwood | PHUM |
| blackspore oakfern | Gymnocarpium ?heterosporum W.H. Wagner (pro sp.) [appalachianum ? robertianum] | GYHE3 |
| bladderfern | Cystopteris Bernh. | CYSTO |
| bluntlobe cliff fern | Woodsia obtusa (Spreng.) Torr. | WOOB2 |
| bluntlobe cliff fern | Woodsia obtusa (Spreng.) Torr. ssp. obtusa | WOOBO |
| Bolbitis aliena | Leptochilus alienus (Sw.) C. Christens. | LEAL8 |
| Bolbitis nicotianifolia | Leptochilus nicotianifolius (Sw.) C. Christens. | LENI3 |
| Bolbitis pergamentacea | Leptochilus pergamentaceus Maxon | LEPE6 |
| Bolbitis portoricensis | Bolbitis cladorrhizans (Spreng.) Ching | BOCL2 |
| Bolbitis portoricensis | Leptochilus cladorrhizans (Spreng.) Maxon | LECL |
| Bonsey's hollyfern | Polystichum bonseyi W. H. Wagner & Hobdy | POBO8 |
| Boston swordfern | Nephrolepis exaltata (L.) Schott | NEEX |
| Boston swordfern | Nephrolepis exaltata (L.) Schott ssp. exaltata | NEEXE |
| Braun's hollyfern | Polystichum braunii (Spenner) F | POBR4 |
| brittle bladderfern | Cystopteris fragilis (L.) Bernh. | CYFR2 |
| broad halberd fern | Tectaria heracleifolia (Willd.) Underwood | TEHE |
| broadleaf tonguefern | Elaphoglossum latifolium (Sw.) J. Sm. | ELLA2 |
| brownhair lacefern | Ctenitis submarginalis (Langsd. & Fisch.) Ching | CTSU2 |
| bulblet bladderfern | Cystopteris bulbifera (L.) Bernh. | CYBU3 |
| button fern | Tectaria cicutaria (L.) Copeland | TECI |
| California swordfern | Polystichum californicum (D.C. Eat.) Diels | POCA25 |
| Caribbean tonguefern | Elaphoglossum apodum (Kaulfuss) Schott ex J. Sm. | ELAP |
| cerro de punta jayuya | Elaphoglossum serpens Maxon & Morton ex Maxon | ELSE2 |
| Christmas fern | Polystichum acrostichoides (Michx.) Schott | POAC4 |
| Christmas fern | Polystichum acrostichoides (Michx.) Schott var. acrostichoides | POACA |
| Christmas fern | Polystichum acrostichoides (Michx.) Schott var. lonchitoides Brooks | POACL |
| cinnamon woodfern | Dryopteris cinnamomea (Cav.) C. Christens. | DRCI2 |
| cliff fern | Woodsia R. Br. | WOODS |
| Clinton's woodfern | Dryopteris clintoniana (D.C. Eat.) Dowell | DRCL |
| coastal woodfern | Dryopteris arguta (Kaulfuss) Watt | DRAR3 |
| Cochise cliff fern | Woodsia cochisensis Windham | WOCO2 |
| common ladyfern | Athyrium filix-femina (L.) Roth | ATFI |
| creeping tonguefern | Elaphoglossum aemulum (Kaulfuss) Brack. | ELAE |
| creepingfern | Bolbitis Schott | BOLBI |
| crested twinsorus fern | Diplazium cristatum (Desr.) Alston | DICR |
| crested woodfern | Dryopteris cristata (L.) Gray | DRCR4 |
| crowned woodfern | Dryopteris fuscoatra (Hbd.) W.J. Robins. | DRFU |
| Ctenitis hirta var. hirta | Dryopteris hirta (Sw.) Kuntze [excluded] | DRHI5 |
| Ctenitis hirta var. hirta | Thelypteris hirta (Sw.) Copeland [excluded] | THHI5 |
| Ctenitis nemorosa | Dryopteris nemorosa (Humb. & Bonpl. ex Willd.) Urban | DRNE6 |
| Ctenitis sloanei | Ctenitis ampla auct. non (Humb. & Bonpl. ex Willd.) Ching [misapplied] | CTAM |
| Ctenitis sloanei | Dryopteris ampla auct. non Kuntze [misapplied] | DRAM2 |
| Ctenitis submarginalis | Dryopteris submarginalis (Langsd. & Fisch.) C. Christens. | DRSU4 |
| cyclopeltis | Cyclopeltis J. Sm. | CYCLO2 |
| Cyrtomium falcatum | Polystichum falcatum (L. f.) Diels | POFA5 |
| Cystopteris bulbifera | Filix bulbifera (L.) Underwood | FIBU |
| Cystopteris fragilis | Cystopteris dickieana Sim | CYDI10 |
| Cystopteris fragilis | Cystopteris fragilis (L.) Bernh. ssp. dickieana (Sim) Hyl. | CYFRD |
| Cystopteris fragilis | Cystopteris fragilis (L.) Bernh. var. angustata Lawson | CYFRA |
| Cystopteris fragilis | Cystopteris fragilis (L.) Bernh. var. woodsioides Christ | CYFRW |
| Cystopteris fragilis | Filix fragilis (L.) Underwood | FIFR |
| Cystopteris laurentiana | Cystopteris fragilis (L.) Bernh. var. huteri (Hausman) Luerss. | CYFRH |
| Cystopteris laurentiana | Cystopteris fragilis (L.) Bernh. var. laurentiana Weatherby | CYFRL2 |
| Cystopteris montana | Filix montana (Lam.) Underwood | FIMO |
| Cystopteris protrusa | Cystopteris fragilis (L.) Bernh. var. protrusa Weatherby | CYFRP2 |
| Cystopteris reevesiana | Cystopteris fragilis (L.) Bernh. var. tenuifolia (Clute) Broun | CYFRT |
| Cystopteris tennesseensis | Cystopteris fragilis (L.) Bernh. var. simulans (Weatherby) McGregor | CYFRS |
| Cystopteris tennesseensis | Cystopteris fragilis (L.) Bernh. var. tennesseensis (Shaver) McGregor | CYFRT2 |
| Cystopteris tenuis | Cystopteris fragilis (L.) Bernh. var. mackayi Lawson | CYFRM |
| delicate lacefern | Ctenitis latifrons (Brack.) Copeland | CTLA |
| Deparia acrostichoides | Athyrium thelypterioides (Michx.) Desv. | ATTH |
| Deparia acrostichoides | Diplazium acrostichoides (Sw.) Butters | DIAC4 |
| Deparia fenzliana | Asplenium fenzlianum Luerss. | ASFE5 |
| Deparia fenzliana | Athyrium fenzlianum (Luerss.) O.& I. Deg. | ATFE2 |
| Deparia fenzliana | Diplazium fenzlianum (Luerss.) C. Christens. | DIFE2 |
| Deparia kaalaana | Athyrium kaalaanum Copeland | ATKA |
| Deparia kaalaana | Diplazium kaalaanum (Copeland) C. Christens. | DIKA |
| Deparia marginalis | Diplazium marginale (Hbd.) C. Christens. | DIMA4 |
| Deparia petersonii | Athyriopsis japonica auct. non (Thunb.) Ching [misapplied] | ATJA3 |
| Deparia petersonii | Athyriopsis japonicum auct. non Thunb. [orthographic variant] | ATJA2 |
| Deparia petersonii | Athyrium japonicum auct. non (Thunb.) Copeland [misapplied] | ATJA |
| Deparia petersonii | Deparia japonica auct. non (Thunb.) M. Kato [misapplied] | DEJA2 |
| Deparia petersonii | Diplazium japonicum auct. non (Thunb.) Bedd. [misapplied] | DIJA |
| Deparia prolifera | Athyrium macraei (Hook. & Grev.) Copeland [excluded] | ATMA9 |
| Deparia prolifera | Athyrium mauianum Copeland [excluded] | ATMA10 |
| Deparia prolifera | Athyrium proliferum (Kaulfuss) C. Christens. [excluded] | ATPR4 |
| Deparia prolifera | Deparia mauiana (Copeland) M. Kato [excluded] | DEMA9 |
| Deparia prolifera | Diplazium mauianum (Copeland) C. Christens. [excluded] | DIMA26 |
| diamond creepingfern | Bolbitis aliena (Sw.) Alston | BOAL2 |
| diamondleaf lacefern | Ctenitis hirta (Sw.) Ching | CTHI |
| diamondleaf lacefern | Ctenitis hirta (Sw.) Ching var. hirta (Sw.) Ching [excluded] | CTHIH2 |
| diamondleaf lacefern | Ctenitis hirta (Sw.) Ching var. portoricana (C. Christens.) Proctor | CTHIP |
| Diplazium cristatum | Diplazium arboreum auct. non (Willd.) K. Presl [misapplied] | DIAR8 |
| Diplazium esculentum | Athyrium esculentum (Retz.) Copeland | ATES |
| Diplazium hymenodes | Diplazium unilobum (Poir.) Hieron. var. hymenodes (Mett.) Maxon | DIUNH |
| Diplazium maximum | Athyrium maximum (Don) Milde [excluded] | ATMA11 |
| Diplazium meyenianum | Diplazium arnottii Brack. | DIAR9 |
| Diplazium pycnocarpon | Asplenium pycnocarpon Spreng. | ASPY5 |
| Diplazium pycnocarpon | Athyrium pycnocarpon (Spreng.) Tidestrom | ATPY |
| Diplazium riedelianum | Diplazium verapax (J. Sm.) Hieron. | DIVE4 |
| Diplazium sandwichianum | Athyrium sandwichianum K. Presl | ATSA3 |
| dotted fern | Fadyenia Hook. | FADYE |
| dotted fern | Fadyenia hookeri (Sweet) Maxon | FAHO |
| Douglas's bladderfern | Cystopteris douglasii Hook. | CYDO |
| drooping tonguefern | Elaphoglossum herminieri (Bory & F?e) T. Moore | ELHE |
| dry land woodfern | Dryopteris nuda Underwood | DRNU |
| Dryopteris ?australis | Dryopteris clintoniana (D.C. Eat.) Dowell var. australis Wherry | DRCLA |
| Dryopteris ?australis | Dryopteris cristata (L.) Gray var. australis (Wherry) Blomquist & Correll | DRCRA |
| Dryopteris ?triploidea | Dryopteris austriaca (Jacq.) Woynar ex Schinz & Thellung var. fructuosa (Gilbert) Morton | DRAUF2 |
| Dryopteris ?triploidea | Dryopteris intermedia (Muhl. ex Willd.) Gray var. fructuosa (Gilbert) Wherry | DRINF |
| Dryopteris ?triploidea | Dryopteris spinulosa (O.F. Muell.) Watt var. fructuosa (Gilbert) Trudell | DRSPF |
| Dryopteris campyloptera | Dryopteris austriaca (Jacq.) Woynar ex Schinz & Thellung | DRAU8 |
| Dryopteris campyloptera | Dryopteris spinulosa (O.F. Muell.) Watt var. americana (Fisch. ex Kunze) Fern. | DRSPA |
| Dryopteris carthusiana | Dryopteris austriaca (Jacq.) Woynar ex Schinz & Thellung var. spinulosa (O.F. Muell.) Fisch. | DRAUS2 |
| Dryopteris carthusiana | Dryopteris spinulosa (O.F. Muell.) Watt | DRSP4 |
| Dryopteris celsa | Dryopteris atropalustris Small | DRAT |
| Dryopteris celsa | Dryopteris goldiana (Hook. ex Goldie) Gray ssp. celsa Wm. Palmer | DRGOC |
| Dryopteris celsa | Dryopteris wherryi F.W. Crane | DRWH |
| Dryopteris clintoniana | Dryopteris ?poyseri Wherry | DRPO3 |
| Dryopteris clintoniana | Dryopteris cristata (L.) Gray var. clintoniana (D.C. Eat.) Underwood | DRCRC3 |
| Dryopteris expansa | Dryopteris assimilis S. Walker | DRAS3 |
| Dryopteris expansa | Dryopteris dilatata (Hoffmann) Gray ssp. americana (Fisch.) Hult | DRDIA |
| Dryopteris expansa | Dryopteris dilatata auct. non (Hoffmann) Gray [misapplied] | DRDI2 |
| Dryopteris expansa | Dryopteris spinulosa (O.F. Muell.) Watt var. dilatata auct. non (Hoffmann) Underwood [misapplied] | DRSPD2 |
| Dryopteris intermedia | Dryopteris austriaca (Jacq.) Woynar ex Schinz & Thellung var. intermedia (Muhl. ex Willd.) Morton | DRAUI2 |
| Dryopteris intermedia | Dryopteris spinulosa (O.F. Muell.) Watt var. concordiana (Davenport) Eastman | DRSPC2 |
| Dryopteris intermedia | Dryopteris spinulosa (O.F. Muell.) Watt var. intermedia (Muhl. ex Willd.) Underwood | DRSPI |
| Dryopteris mauiensis | Dryopteris sandwicensis auct. non (Hook. & Arn.) C. Christens. [misapplied] | DRSA5 |
| Dryopteris rossii | Dryopteris patula (Sw.) Underwood var. rossii (C. Christens.) C. Christens. | DRPAR |
| Dryopteris sandwicensis | Dryopteris unidentata auct. non (Hook. & Arn.) C. Christens. [misapplied] | DRUN4 |
| Dryopteris unidentata | Dryopteris acutidens C. Christens. | DRAC |
| Dryopteris wallichiana | Dryopteris paleacea (D. Don) Hand.-Maz. | DRPA12 |
| Dryopteris wallichiana | Dryopteris parallelogramma (Kunze) Alston | DRPA5 |
| Dudley's swordfern | Polystichum dudleyi Maxon | PODU2 |
| Duss's tonguefern | Elaphoglossum petiolatum (Sw.) Urban var. dussii (Underwood ex Maxon) Proctor | ELPED |
| dwarf netvein hollyfern | Cyrtomium caryotideum (Wallich ex Hook. & Grev.) K. Presl | CYCA7 |
| eared veinfern | Phanerophlebia auriculata Underwood | PHAU2 |
| eggleaf lacefern | Ctenitis nemorosa (Humb. & Bonpl. ex Willd.) Ching | CTNE |
| ekaha | Elaphoglossum hirtum (Sw.) C. Christens. | ELHI3 |
| ekaha | Elaphoglossum hirtum (Sw.) C. Christens. var. micans (Mett.) C. Christens. | ELHIM |
| Elaphoglossum aemulum | Elaphoglossum conforme (Sw.) Schott | ELCO9 |
| Elaphoglossum aemulum | Elaphoglossum gorgoneum (Kaulfuss) Brack. | ELGO |
| Elaphoglossum alatum var. crassicaule | Elaphoglossum crassicaule Copeland | ELCR |
| Elaphoglossum alatum var. fauriei | Elaphoglossum fauriei Copeland | ELFA2 |
| Elaphoglossum alatum var. parvisquamaeum | Elaphoglossum parvisquamaeum Skottsberg | ELPA8 |
| Elaphoglossum crassifolium | Elaphoglossum reticulatum (Kaulfuss) Gaud. | ELRE5 |
| Elaphoglossum crinitum | Hymenodium crinitum (L.) F | HYCR4 |
| Elaphoglossum longifolium | Acrostichum longifolium Jacq., non Burm. | ACLO3 |
| Elaphoglossum martinicense | Elaphoglossum underwoodianum Maxon | ELUN4 |
| Elaphoglossum maxonii | Elaphoglossum pteropus auct. non C. Christens. [misapplied] | ELPT |
| Elaphoglossum pellucidum | Elaphoglossum micradenium (F?e) T. Moore | ELMI6 |
| Elaphoglossum peltatum | Peltapteris peltata (Sw.) Morton | PEPE4 |
| Elaphoglossum petiolatum var. dussii | Elaphoglossum dussii Underwood ex Maxon | ELDU |
| Elaphoglossum rigidum | Elaphoglossum flaccidum (F?e) T. Moore | ELFL3 |
| Elaphoglossum simplex | Elaphoglossum firmum (Mett. ex Kuhn) Urban | ELFI2 |
| Elaphoglossum spathulatum | Elaphoglossum piloselloides (K. Presl) T. Moore | ELPI4 |
| Elaphoglossum spathulatum | Elaphoglossum pusillum (Mett. ex Kuhn) C. Christens. | ELPU |
| false hollyfern | Arachniodes chaerophylloides (Poir.) Proctor | ARCH10 |
| false shieldfern | Lastreopsis effusa (Sw.) Tindale | LAEF |
| false spleenwort | Deparia Hook. & Grev. | DEPAR |
| Fenzl's false spleenwort | Deparia fenzliana (Luerss.) M. Kato | DEFE2 |
| fishtail swordfern | Nephrolepis falcata (Cav.) C. Christens. | NEFA |
| flatleaf hollyfern | Polystichum platyphyllum (Willd.) K. Presl | POPL3 |
| Florida lacefern | Ctenitis sloanei (Poepp. ex Spreng.) Morton | CTSL |
| fountain fern | Triplophyllum funestum (Kunze) Holttum | TRFU2 |
| fragrant woodfern | Dryopteris fragrans (L.) Schott | DRFR |
| fragrant woodfern | Dryopteris fragrans (L.) Schott var. fragrans | DRFRF |
| fragrant woodfern | Dryopteris fragrans (L.) Schott var. remotiuscula Komarov | DRFRR |
| fringedfern | Lomariopsis F | LOMAR |
| Gaudichaud's halberd fern | Tectaria gaudichaudii (Mett.) Maxon | TEGA |
| giant swordfern | Nephrolepis biserrata (Sw.) Schott | NEBI |
| glade fern | Diplazium pycnocarpon (Spreng.) Broun | DIPY |
| Goldie's woodfern | Dryopteris goldiana (Hook. ex Goldie) Gray | DRGO |
| graceful tonguefern | Elaphoglossum petiolatum (Sw.) Urban | ELPE3 |
| great fern | Diplazium expansum Willd. | DIEX3 |
| Guadeloupe tonguefern | Elaphoglossum erinaceum (F?e) T. Moore | ELER2 |
| Guiana fern | Lomagramma guianensis (Aubl.) Ching | LOGU |
| Gymnocarpium ?heterosporum | Gymnocarpium heterosporum W.H. Wagner [hybrid] | GYHE |
| Gymnocarpium disjunctum | Dryopteris disjuncta (Rupr.) Morton | DRDI3 |
| Gymnocarpium disjunctum | Gymnocarpium dryopteris (L.) Newman ssp. disjunctum (Rupr.) Sarvela | GYDRD |
| Gymnocarpium disjunctum | Gymnocarpium dryopteris (L.) Newman var. disjunctum (Rupr.) Ching | GYDRD2 |
| Gymnocarpium dryopteris | Dryopteris dryopteris (L.) Britt. | DRDR2 |
| Gymnocarpium dryopteris | Dryopteris linnaeana C. Christens. | DRLI2 |
| Gymnocarpium dryopteris | Phegopteris dryopteris (L.) F | PHDR3 |
| Gymnocarpium dryopteris | Thelypteris dryopteris (L.) Slosson | THDR |
| Gymnocarpium robertianum | Dryopteris robertiana (Hoffmann) C. Christens. | DRRO3 |
| Gymnocarpium robertianum | Gymnocarpium dryopteris (L.) Newman var. pumilum (DC.) Boivin | GYDRP |
| Gymnocarpium robertianum | Phegopteris robertiana (Hoffmann) A. Braun ex Aschers. | PHRO9 |
| hairvein fern | Hypoderris brownii J. Sm. | HYBR2 |
| halberd fern | Tectaria Cav. | TECTA |
| halfnetfern | Hemidictyum marginatum (L.) K. Presl | HEMA5 |
| Hattie Bauer's halberd fern | Tectaria coriandrifolia (Sw.) Underwood | TECO3 |
| Hawai'i twinsorus fern | Diplazium sandwichianum (K. Presl) Diels | DISA3 |
| Hawai'i woodfern | Dryopteris hawaiiensis (Hbd.) W.J. Robins. | DRHA |
| hemidictyum | Hemidictyum K. Presl | HEMID |
| Hillebrand's hollyfern | Polystichum hillebrandii Carruthers | POHI7 |
| Hobdy's woodfern | Dryopteris hobdyana W.H. Wagner | DRHO3 |
| hollyfern | Arachniodes Blume | ARACH2 |
| hollyfern | Polystichum Roth | POLYS |
| hollyleaf fringedfern | Lomariopsis kunzeana (K. Presl ex Underwood) Holttum | LOKU |
| Honolulu lacefern | Ctenitis honolulensis (Hook.) Copeland | CTHO |
| hypoderris | Hypoderris R. Br. ex Hook. | HYPOD |
| incised halberd fern | Tectaria incisa Cav. | TEIN |
| intermediate woodfern | Dryopteris intermedia (Muhl. ex Willd.) Gray | DRIN5 |
| iron fern | Rumohra adiantiformis (G. Forst.) Ching | RUAD |
| island lacefern | Nothoperanema (Tagawa) Ching | NOTHO6 |
| island lacefern | Nothoperanema rubiginosum (Brack.) A.R. Sm. & D. Palmer | NORU |
| island swordfern | Polystichum haleakalense Brack. | POHA |
| island tonguefern | Elaphoglossum wawrae (Luerss.) C. Christens. | ELWA |
| islandfern | Olfersia Raddi | OLFER |
| jagleaf junglefern | Megalastrum subincisa (Willd.) A.R. Sm. & R.C. Moran | MESU3 |
| Jamaican tonguefern | Elaphoglossum eggersii (Baker) Christ | ELEG |
| Japanese false spleenwort | Deparia petersonii (Kunze) M. Kato | DEPE3 |
| Japanese netvein hollyfern | Cyrtomium falcatum (L. f.) K. Presl | CYFA2 |
| jeweled tonguefern | Elaphoglossum pellucidum Gaud. | ELPE |
| Kauaikinana woodfern | Dryopteris podosora W.H. Wagner & T. Flynn | DRPO5 |
| kilaw | Dryopteris glabra (Brack.) Kuntze | DRGL3 |
| Korean tasselfern | Polystichum polyblepharum C. Presl | POPO22 |
| Kruckeberg's hollyfern | Polystichum kruckebergii W.H. Wagner | POKR |
| L'herminier's twinsorus fern | Diplazium lherminieri Hieron. | DILH |
| lacefern | Ctenitis (C. Christens.) C. Christens. ex Tardieu-Blot & C. Christens | CTENI2 |
| ladyfern | Athyrium Roth | ATHYR |
| lanceleaf twinsorus fern | Diplazium lonchophyllum Kunze | DILO3 |
| largeleaf twinsorus fern | Diplazium grandifolium (Sw.) Sw. | DIGR2 |
| Lastreopsis effusa | Ctenitis effusa (Sw.) Copeland | CTEF |
| Lastreopsis effusa | Dryopteris effusa (Sw.) Urban | DREF2 |
| laurel-leaf swordfern | Nephrolepis laurifolia (Christ) Proctor | NELA2 |
| Laurent's cliff fern | Woodsia scopulina D.C. Eat. ssp. laurentiana Windham | WOSCL |
| least halberd fern | Tectaria fimbriata (Willd.) Proctor & Lourteig | TEFI3 |
| Lemmon's hollyfern | Polystichum lemmonii Underwood | POLE5 |
| lime fern | Cyclopeltis semicordata (Sw.) J. Sm. | CYSE4 |
| little woodfern | Dryopteris parvula Robins. | DRPA6 |
| log fern | Dryopteris celsa (Wm. Palmer) Knowlt., Palmer & Pollard ex Small | DRCE |
| lomagramma | Lomagramma J. Sm. | LOMAG |
| Lomagramma guianensis | Leptochilus guianensis (Aubl.) C. Christens. | LEGU |
| Lomariopsis amydrophlebia | Stenochlaena amydrophlebia Slosson ex Maxon | STAM6 |
| Lomariopsis kunzeana | Stenochlaena kunzeana K. Presl ex Underwood | STKU |
| Lomariopsis sorbifolia | Stenochlaena sorbifolia (L.) J. Sm. | STSO3 |
| longleaf tonguefern | Elaphoglossum longifolium J. Sm. | ELLO |
| lowland bladderfern | Cystopteris protrusa (Weatherby) Blasdell | CYPR4 |
| male fern | Dryopteris filix-mas (L.) Schott | DRFI2 |
| marginal false spleenwort | Deparia marginalis (Hbd.) M. Kato | DEMA6 |
| marginal woodfern | Dryopteris marginalis (L.) Gray | DRMA4 |
| Martinique tonguefern | Elaphoglossum martinicense (Desv.) T. Moore | ELMA2 |
| Matteuccia struthiopteris | Matteuccia pensylvanica (Willd.) Raymond | MAPE4 |
| Matteuccia struthiopteris | Matteuccia struthiopteris (L.) Todaro var. pensylvanica (Willd.) Morton | MASTP |
| Matteuccia struthiopteris | Matteuccia struthiopteris (L.) Todaro var. pubescens (Terry) Clute | MASTP2 |
| Matteuccia struthiopteris | Onoclea struthiopteris (L.) Hoffmann p.p. | ONST2 |
| Matteuccia struthiopteris | Onoclea struthiopteris (L.) Hoffmann var. pensylvanica (Willd.) Boivin | ONSTP |
| Matteuccia struthiopteris | Pteretis nodulosa (Michx.) Nieuwl. | PTNO2 |
| Matteuccia struthiopteris | Pteretis pensylvanica (Willd.) Fern. | PTPE2 |
| Maui woodfern | Dryopteris mauiensis C. Christens. | DRMA11 |
| Maxon's tonguefern | Elaphoglossum maxonii Underwood ex Morton | ELMA3 |
| megalastrum | Megalastrum Holttum | MEGAL2 |
| Megalastrum subincisa | Ctenitis subincisa (Willd.) Ching | CTSU |
| Megalastrum subincisa | Dryopteris subincisa (Willd.) Urban | DRSU6 |
| Meyen's twinsorus fern | Diplazium meyenianum K. Presl | DIME |
| Molokai twinsorus fern | Diplazium molokaiense Robins. | DIMO4 |
| Monte Guilarte hollyfern | Polystichum calderonense Proctor | POCA27 |
| mountain bladderfern | Cystopteris montana (Lam.) Bernh. ex Desv. | CYMO3 |
| mountain hollyfern | Polystichum scopulinum (D.C. Eat.) Maxon | POSC5 |
| mountain woodfern | Dryopteris campyloptera Clarkson | DRCA3 |
| Na Pali-Kona woodfern | Dryopteris tenebrosa W.H. Wagner | DRTE4 |
| narrow swordfern | Nephrolepis cordifolia (L.) K. Presl | NECO3 |
| narrowleaf swordfern | Polystichum imbricans (D.C. Eat.) D.H. Wagner | POIM |
| narrowleaf swordfern | Polystichum imbricans (D.C. Eat.) D.H. Wagner ssp. curtum (Ewan) D.H. Wagner | POIMC |
| narrowleaf swordfern | Polystichum imbricans (D.C. Eat.) D.H. Wagner ssp. imbricans | POIMI |
| Nephrolepis biserrata | Aspidium biserratum Sw. | ASBI10 |
| Nephrolepis falcata | Nephrolepis biserrata (Sw.) Schott var. furcans hort. ex Bailey | NEBIF |
| Nephrolepis undulata | Nephrolepis occidentalis Kunze | NEOC |
| netvein hollyfern | Cyrtomium K. Presl | CYRTO |
| New Mexico cliff fern | Woodsia neomexicana Windham | WONE |
| northern hollyfern | Polystichum lonchitis (L.) Roth | POLO4 |
| Nothoperanema rubiginosum | Ctenitis rubiginosa (Brack.) Copeland | CTRU |
| oakfern | Gymnocarpium Newman | GYMNO |
| oleander fern | Oleandra articulata (Sw.) K. Presl | OLAR |
| oleander fern | Oleandra Cav. | OLEAN |
| Oleandra articulata | Oleandra nodosa (Willd.) K. Presl | OLNO |
| Olfersia cervina | Polybotrya cervina (L.) Kaulfuss | POCE |
| onetooth woodfern | Dryopteris unidentata (Hook. & Arn.) C. Christens. | DRUN |
| Oregon cliff fern | Woodsia oregana D.C. Eat. | WOOR |
| Oregon cliff fern | Woodsia oregana D.C. Eat. ssp. cathcartiana (B.L. Robins.) Windham | WOORC2 |
| Oregon cliff fern | Woodsia oregana D.C. Eat. ssp. oregana | WOORO |
| ostrich fern | Matteuccia struthiopteris (L.) Todaro | MAST |
| ostrich fern | Matteuccia Todaro | MATTE |
| Pacific lacefern | Ctenitis squamigera (Hook. & Arn.) Copeland | CTSQ |
| Pacific oakfern | Gymnocarpium disjunctum (Rupr.) Ching | GYDI2 |
| Pacific woodfern | Dryopteris sandwicensis (Hook. & Arn.) C. Christens. | DRSA |
| papery tonguefern | Elaphoglossum chartaceum (Baker ex Jenman) C. Christens. | ELCH2 |
| peacock fern | Diplazium hymenodes (Mett.) A.& D. L?ve | DIHY2 |
| peltate tonguefern | Elaphoglossum peltatum (Sw.) Urban | ELPE2 |
| phanerophlebia | Phanerophlebia K. Presl | PHANE |
| Phanerophlebia auriculata | Cyrtomium auriculatum (Underwood) Morton | CYAU |
| Phanerophlebia umbonata | Cyrtomium umbonatum (Underwood) Morton | CYUM |
| Phillips's cliff fern | Woodsia phillipsii Windham | WOPH |
| Pihea woodfern | Dryopteris alboviridis W.H. Wagner | DRAL9 |
| plantainleaf halberd fern | Tectaria plantaginea (Jacq.) Maxon | TEPL2 |
| plantainleaf halberd fern | Tectaria plantaginea (Jacq.) Maxon var. confluens Morton | TEPLC |
| plantainleaf twinsorus fern | Diplazium plantaginifolium (L.) Urban | DIPL2 |
| Plummer's cliff fern | Woodsia plummerae Lemmon | WOPL |
| Polystichum ?hagenahii | Polystichum ?marginale (W.R. McColl) Cody | POMA33 |
| Polystichum acrostichoides var. acrostichoides | Polystichum acrostichoides (Michx.) Schott var. schweinitzii (Beck) Small | POACS |
| Polystichum andersonii | Polystichum braunii (Spenner) F?e ssp. andersonii (Hopkins) Calder & Taylor | POBRA4 |
| Polystichum braunii | Polystichum braunii (Spenner) F?e ssp. purshii (Fern.) Calder & Taylor | POBRP3 |
| Polystichum braunii | Polystichum braunii (Spenner) F?e var. purshii Fern. | POBRP2 |
| Polystichum echinatum | Polystichum triangulum auct. non (L.) F?e [misapplied] | POTR9 |
| Polystichum imbricans ssp. curtum | Polystichum munitum (Kaulfuss) K. Presl ssp. curtum Ewan | POMUC |
| Polystichum imbricans ssp. imbricans | Polystichum munitum (Kaulfuss) K. Presl ssp. imbricans (D.C. Eat.) Munz | POMUI4 |
| Polystichum imbricans ssp. imbricans | Polystichum munitum (Kaulfuss) K. Presl ssp. nudatum (D.C. Eat.) Ewan | POMUN |
| Polystichum imbricans ssp. imbricans | Polystichum munitum (Kaulfuss) K. Presl var. imbricans (D.C. Eat.) Maxon | POMUI3 |
| Polystichum lemmonii | Polystichum mohrioides auct. non (Bory) K. Presl [misapplied] | POMO9 |
| Polystichum lonchitis | Polystichum mohrioides (Bory) K. Presl var. lemmonii (Underwood) Fern. | POMOL |
| Polystichum microchlamys | Aspidium microchlamys Christ | ASMI13 |
| Polystichum munitum | Polystichum munitum (Kaulfuss) K. Presl var. incisoserratum (D.C. Eat.) Underwood | POMUI2 |
| Polystichum scopulinum | Polystichum mohrioides (Bory) K. Presl var. scopulinum (D.C. Eat.) Fern. | POMOS |
| Polystichum setigerum | Polystichum alaskense Maxon | POAL12 |
| Polystichum setigerum | Polystichum braunii (Spenner) F?e ssp. alaskense (Maxon) Calder & Taylor | POBRA2 |
| Polystichum setigerum | Polystichum braunii (Spenner) F?e var. alaskense (Maxon) Hult | POBRA3 |
| Polystichum tsussimense | Polystichum tsus-simense (Hook.) J. Sm. [orthographic variant] | POTS |
| Puerto Rico creepingfern | Bolbitis portoricensis (Spreng.) Hennipman | BOPO |
| Puerto Rico halberd fern | Tectaria estremeriana Proctor & A.M. Evans | TEES |
| Reeves's bladderfern | Cystopteris reevesiana Lellinger | CYRE15 |
| Riedel's twinsorus fern | Diplazium riedelianum (Bong. ex Kunze) K. Presl | DIRI2 |
| Rio Grande tonguefern | Elaphoglossum simplex (Sw.) Schott ex J. Sm. | ELSI3 |
| Rocky Mountain woodsia | Woodsia scopulina D.C. Eat. | WOSC |
| Rocky Mountain woodsia | Woodsia scopulina D.C. Eat. ssp. scopulina | WOSCS |
| Ross's woodfern | Dryopteris rossii C. Christens. | DRRO2 |
| royal fringedfern | Lomariopsis amydrophlebia (Slosson ex Maxon) Holttum | LOAM2 |
| royal tonguefern | Elaphoglossum crassifolium (Gaud.) Anders. & Crosby | ELCR2 |
| royal twinsorus fern | Diplazium centripetale (Baker) Maxon | DICE |
| rumohra | Rumohra Raddi | RUMOH |
| Rumohra adiantiformis | Polystichum adiantiforme (G. Forst.) J. Sm. | POAD |
| rusty swordfern | Polystichum echinatum (Gmel.) C. Christens. | POEC |
| rusty woodsia | Woodsia ilvensis (L.) R. Br. | WOIL |
| Santa Cruz Island hollyfern | Arachniodes insularis W.H. Wagner | ARIN22 |
| scaly swordfern | Nephrolepis hirsutula (J.R. Forst.) K. Presl | NEHI |
| scented oakfern | Gymnocarpium robertianum (Hoffmann) Newman | GYRO |
| sensitive fern | Onoclea L. | ONOCL |
| sensitive fern | Onoclea sensibilis L. | ONSE |
| serpent fern | Deparia kaalaana (Copeland) M. Kato | DEKA |
| serpent woodfern | Dryopteris crinalis (Hook. & Arn.) C. Christens. | DRCR5 |
| shieldfern | Lastreopsis Ching | LASTR |
| showy tonguefern | Elaphoglossum decoratum (Kunze) T. Moore | ELDE |
| silver false spleenwort | Deparia acrostichoides (Sw.) M. Kato | DEAC4 |
| simpler hollyfern | Arachniodes simplicior (Makino) Ohwi | ARSI4 |
| singlelobe twinsorus fern | Diplazium unilobum (Poir.) Hieron. | DIUN4 |
| Smith's tonguefern | Elaphoglossum smithii (Baker) Christ | ELSM2 |
| smooth woodsia | Woodsia glabella R. Br. ex Richards. | WOGL |
| southern woodfern | Dryopteris ludoviciana (Kunze) Small | DRLU |
| spinulose woodfern | Dryopteris carthusiana (Vill.) H.P. Fuchs | DRCA11 |
| spreading woodfern | Dryopteris expansa (K. Presl) Fraser-Jenkins & Jermy | DREX2 |
| St. Lawrence bladderfern | Cystopteris laurentiana (Weatherby) Blasdell | CYLA4 |
| stiff tonguefern | Elaphoglossum rigidum (Aubl.) Urban | ELRI2 |
| streamside swordfern | Nephrolepis rivularis (Vahl) Mett. ex Krug | NERI2 |
| striped twinsorus fern | Diplazium striatum (L.) K. Presl | DIST2 |
| subarctic ladyfern | Athyrium filix-femina (L.) Roth ssp. angustum (Willd.) Clausen | ATFIA |
| subarctic ladyfern | Athyrium filix-femina (L.) Roth ssp. cyclosorum (Rupr.) C. Christens. | ATFIC |
| swordfern | Nephrolepis Schott | NEPHR |
| tailed hollyfern | Polystichum rhizophyllum (Sw.) K. Presl | PORH2 |
| tall tonguefern | Elaphoglossum alatum Gaud. | ELAL2 |
| tall tonguefern | Elaphoglossum alatum Gaud. var. alatum | ELALA |
| tall tonguefern | Elaphoglossum alatum Gaud. var. crassicaule (Copeland) Anders. & Crosby | ELALC |
| tall tonguefern | Elaphoglossum alatum Gaud. var. fauriei (Copeland) Anders. & Crosby | ELALF |
| tall tonguefern | Elaphoglossum alatum Gaud. var. parvisquamaeum (Skottsberg) Anders. & Crosby | ELALP |
| Tectaria fimbriata | Tectaria lobata (K. Presl) Morton | TELO |
| Tectaria fimbriata | Tectaria minima Underwood | TEMI2 |
| Tectaria incisa | Tectaria martinicensis (Spreng.) Copeland | TEMA |
| Tennessee bladderfern | Cystopteris tennesseensis Shaver | CYTE3 |
| thickroot tonguefern | Elaphoglossum glabellum J. Sm. | ELGL2 |
| thinleaf creepingfern | Bolbitis nicotianifolia (Sw.) Alston | BONI |
| threeleaf halberd fern | Tectaria trifoliata (L.) Cav. | TETR |
| tonguefern | Elaphoglossum Schott ex J. Sm. | ELAPH |
| triplophyllum | Triplophyllum Holttum | TRIPL3 |
| Triplophyllum funestum | Aspidium funestum Kunze | ASFU5 |
| Triplophyllum funestum | Nephrodium funestum (Kunze) Hook. | NEFU |
| Tsussima hollyfern | Polystichum tsussimense (Hook.) J. Sm. | POTS2 |
| twinsorus fern | Diplazium Sw. | DIPLA2 |
| upland brittle bladderfern | Cystopteris tenuis (Michx.) Desv. | CYTE7 |
| Utah bladderfern | Cystopteris utahensis Windham & Haufler | CYUT2 |
| vegetable fern | Diplazium esculentum (Retz.) Sw. | DIES |
| Waikamoi woodfern | Dryopteris tetrapinnata W.H. Wagner & Hobdy | DRTE5 |
| West Indian tonguefern | Elaphoglossum crinitum (L.) Christ | ELCR3 |
| western cliff fern | Woodsia obtusa (Spreng.) Torr. ssp. occidentalis Windham | WOOBO2 |
| western oakfern | Gymnocarpium dryopteris (L.) Newman | GYDR |
| western swordfern | Polystichum munitum (Kaulfuss) K. Presl | POMU |
| woodfern | Dryopteris Adans. | DRYOP |
| woodland creepingfern | Bolbitis pergamentacea (Maxon) Ching | BOPE |
| woodland islandfern | Olfersia cervina (L.) Kunze | OLCE |
| Woodsia ?abbeae | Woodsia confusa T.M.C. Taylor | WOCO3 |
| Woodsia ?abbeae | Woodsia oregana D.C. Eat. var. squammosa Boivin | WOORS |
| Woodsia ?gracilis | Woodsia ilvensis (L.) R. Br. var. gracilis Lawson | WOILG |
| Woodsia alpina | Woodsia alpina (Bolton) S.F. Gray var. bellii Lawson | WOALB2 |
| Woodsia alpina | Woodsia glabella R. Br. ex Richards. var. bellii (Lawson) Lawson | WOGLB |
| Woodsia appalachiana | Woodsia scopulina D.C. Eat. ssp. appalachiana (T.M.C. Taylor) Windham | WOSCA2 |
| Woodsia appalachiana | Woodsia scopulina D.C. Eat. var. appalachiana (T.M.C. Taylor) Morton | WOSCA |
| Woodsia oregana ssp. cathcartiana | Woodsia cathcartiana B.L. Robins. | WOCA |
| Woodsia oregana ssp. cathcartiana | Woodsia oregana D.C. Eat. var. cathcartiana (B.L. Robins.) Morton | WOORC |
| Woodsia scopulina ssp. scopulina | Woodsia oregana D.C. Eat. var. lyallii (Hook.) Boivin | WOORL |