Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:Ferns_of_the_United_States> . }
- Actinostachys_pennula subject Category:Ferns_of_the_United_States.
- Adiantum_aleuticum subject Category:Ferns_of_the_United_States.
- Adiantum_capillus-veneris subject Category:Ferns_of_the_United_States.
- Adiantum_jordanii subject Category:Ferns_of_the_United_States.
- Adiantum_pedatum subject Category:Ferns_of_the_United_States.
- Adiantum_viridimontanum subject Category:Ferns_of_the_United_States.
- Adiantum_vivesii subject Category:Ferns_of_the_United_States.
- American_Fern_Society subject Category:Ferns_of_the_United_States.
- Argyrochosma_jonesii subject Category:Ferns_of_the_United_States.
- Asplenium_adiantum-nigrum subject Category:Ferns_of_the_United_States.
- Asplenium_bradleyi subject Category:Ferns_of_the_United_States.
- Asplenium_montanum subject Category:Ferns_of_the_United_States.
- Asplenium_pinnatifidum subject Category:Ferns_of_the_United_States.
- Asplenium_platyneuron subject Category:Ferns_of_the_United_States.
- Asplenium_resiliens subject Category:Ferns_of_the_United_States.
- Asplenium_rhizophyllum subject Category:Ferns_of_the_United_States.
- Asplenium_ruta-muraria subject Category:Ferns_of_the_United_States.
- Asplenium_scolopendrium subject Category:Ferns_of_the_United_States.
- Asplenium_septentrionale subject Category:Ferns_of_the_United_States.
- Asplenium_serratum subject Category:Ferns_of_the_United_States.
- Asplenium_trichomanes subject Category:Ferns_of_the_United_States.
- Asplenium_tutwilerae subject Category:Ferns_of_the_United_States.
- Asplenium_vespertinum subject Category:Ferns_of_the_United_States.
- Asplenium_viride subject Category:Ferns_of_the_United_States.
- Asplenium_×_boydstoniae subject Category:Ferns_of_the_United_States.
- Asplenium_×_ebenoides subject Category:Ferns_of_the_United_States.
- Astrolepis_cochisensis subject Category:Ferns_of_the_United_States.
- Athyrium_angustum subject Category:Ferns_of_the_United_States.
- Athyrium_asplenioides subject Category:Ferns_of_the_United_States.
- Athyrium_distentifolium subject Category:Ferns_of_the_United_States.
- Athyrium_filix-femina subject Category:Ferns_of_the_United_States.
- Azolla_caroliniana subject Category:Ferns_of_the_United_States.
- Azolla_filiculoides subject Category:Ferns_of_the_United_States.
- Blechnum_spicant subject Category:Ferns_of_the_United_States.
- Bommeria subject Category:Ferns_of_the_United_States.
- Botrychium_lunaria subject Category:Ferns_of_the_United_States.
- Botrychium_matricariifolium subject Category:Ferns_of_the_United_States.
- Botrypus_virginianus subject Category:Ferns_of_the_United_States.
- Cheilanthes_covillei subject Category:Ferns_of_the_United_States.
- Cheilanthes_feei subject Category:Ferns_of_the_United_States.
- Cheilanthes_parryi subject Category:Ferns_of_the_United_States.
- Cheilanthes_villosa subject Category:Ferns_of_the_United_States.
- Cryptogramma_acrostichoides subject Category:Ferns_of_the_United_States.
- Cystopteris_bulbifera subject Category:Ferns_of_the_United_States.
- Cystopteris_dickieana subject Category:Ferns_of_the_United_States.
- Cystopteris_fragilis subject Category:Ferns_of_the_United_States.
- Cystopteris_protrusa subject Category:Ferns_of_the_United_States.
- Cystopteris_tenuis subject Category:Ferns_of_the_United_States.
- Dennstaedtia_punctilobula subject Category:Ferns_of_the_United_States.
- Deparia_acrostichoides subject Category:Ferns_of_the_United_States.
- Diplazium_pycnocarpon subject Category:Ferns_of_the_United_States.
- Dryopteris_arguta subject Category:Ferns_of_the_United_States.
- Dryopteris_campyloptera subject Category:Ferns_of_the_United_States.
- Dryopteris_carthusiana subject Category:Ferns_of_the_United_States.
- Dryopteris_clintoniana subject Category:Ferns_of_the_United_States.
- Dryopteris_cristata subject Category:Ferns_of_the_United_States.
- Dryopteris_expansa subject Category:Ferns_of_the_United_States.
- Dryopteris_filix-mas subject Category:Ferns_of_the_United_States.
- Dryopteris_goldiana subject Category:Ferns_of_the_United_States.
- Dryopteris_intermedia subject Category:Ferns_of_the_United_States.
- Dryopteris_ludoviciana subject Category:Ferns_of_the_United_States.
- Dryopteris_marginalis subject Category:Ferns_of_the_United_States.
- Echinodorus_tenellus subject Category:Ferns_of_the_United_States.
- Equisetum_hyemale subject Category:Ferns_of_the_United_States.
- Ferns_and_fern_allies_of_Soldiers_Delight subject Category:Ferns_of_the_United_States.
- Gymnocarpium_dryopteris subject Category:Ferns_of_the_United_States.
- Gymnocarpium_robertianum subject Category:Ferns_of_the_United_States.
- Lygodium_palmatum subject Category:Ferns_of_the_United_States.
- Matteuccia_struthiopteris subject Category:Ferns_of_the_United_States.
- Notholaena_standleyi subject Category:Ferns_of_the_United_States.
- Onoclea_sensibilis subject Category:Ferns_of_the_United_States.
- Ophioglossum_pusillum subject Category:Ferns_of_the_United_States.
- Ophioglossum_vulgatum subject Category:Ferns_of_the_United_States.
- Osmunda_claytoniana subject Category:Ferns_of_the_United_States.
- Osmunda_regalis subject Category:Ferns_of_the_United_States.
- Osmunda_spectabilis subject Category:Ferns_of_the_United_States.
- Osmundastrum_cinnamomeum subject Category:Ferns_of_the_United_States.
- Pellaea_atropurpurea subject Category:Ferns_of_the_United_States.
- Pellaea_breweri subject Category:Ferns_of_the_United_States.
- Pellaea_bridgesii subject Category:Ferns_of_the_United_States.
- Pellaea_glabella subject Category:Ferns_of_the_United_States.
- Pellaea_mucronata subject Category:Ferns_of_the_United_States.
- Pellaea_truncata subject Category:Ferns_of_the_United_States.
- Pentagramma_triangularis subject Category:Ferns_of_the_United_States.
- Phegopteris_connectilis subject Category:Ferns_of_the_United_States.
- Phlebodium_aureum subject Category:Ferns_of_the_United_States.
- Pilularia_americana subject Category:Ferns_of_the_United_States.
- Pleopeltis_polypodioides subject Category:Ferns_of_the_United_States.
- Polypodium_appalachianum subject Category:Ferns_of_the_United_States.
- Polypodium_calirhiza subject Category:Ferns_of_the_United_States.
- Polypodium_glycyrrhiza subject Category:Ferns_of_the_United_States.
- Polypodium_hesperium subject Category:Ferns_of_the_United_States.
- Polypodium_punctatum subject Category:Ferns_of_the_United_States.
- Polypodium_scouleri subject Category:Ferns_of_the_United_States.
- Polypodium_virginianum subject Category:Ferns_of_the_United_States.
- Polypodium_vulgare subject Category:Ferns_of_the_United_States.
- Polystichum_acrostichoides subject Category:Ferns_of_the_United_States.
- Polystichum_aleuticum subject Category:Ferns_of_the_United_States.
- Psilotum_nudum subject Category:Ferns_of_the_United_States.
- Pteridium_aquilinum subject Category:Ferns_of_the_United_States.