#division_Pteridophyta__Pteridophyta  containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
  supertype:  #division.phylum  (botany) taxonomic unit of plants corresponding to a phylum
  member of:  #kingdom_Plantae
  member:  #genus_Pecopteris  genus of Carboniferous fossil ferns
     member:  #pecopteris  Carboniferous fossil fern characterized by a regular arrangement of the leaflets resembling a comb
  member:  #pteridophyte__nonflowering_plant  plants having vascular tissue and reproducing by spores
  member:  #fern_family  families of ferns and fern allies
  member:  #fern_genus  genera of ferns and fern allies
  member:  #class_Filicopsida__Filicopsida__Filicinae__class_Filicinae  ferns
     member:  #fern  any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores
     member:  #family_Schizaeaceae__Schizaeaceae  small family of mainly tropical ferns
        member:  #genus_Schizaea__Schizaea  type genus of the Schizaeaceae cosmopolitan especially in tropics; small leptosporangiate ferns: curly grass fern
           member:  #curly_grass_fern__curlygrassfern__curly_grass__curlygras__Schizaea_pusilla  rare small fern of northeastern North America having numerous slender spiraling fronds and forming dense tufts
        member:  #genus_Anemia__Anemia  genus of terrestrial or lithophytic ferns having pinnatifid fronds; chiefly of tropical America
           member:  #pine_fern__Anemia_adiantifolia  fern of Florida and West Indies and Central America with rhizome densely clad in grown hairs
        member:  #genus_Lygodium__Lygodium  chiefly tropical climbing ferns
           member:  #climbing_fern  any of several ferns of the genus Lygodium
        member:  #genus_Mohria__Mohria  African terrestrial ferns
           member:  #scented_fern__scentedfern__mohriacaffrorum  sweetly scented African fern with narrow bipinnate fronds
     member:  #family_Marsileaceae__Marsileaceae  clover ferns
        member:  #genus_Marsilea__Marsilea  clover ferns
           member:  #clover_fern__pepperwort  any of several water ferns of the genus Marsilea having four leaflets
           member:  #water_clover__waterclover__Marsilea_quadrifolia  water fern of Europe and Asia and the eastern United States distinguished by four leaflets resembling clover leaves
        member:  #genus_Pilularia__Pilularia  pillworts
           member:  #pillwort__Pilularia_globulifera  European water fern found around margins of bodies of water or in wet acid soil having small globose sporocarps
        member:  #genus_Regnellidium  1 species of aquatic or semi-aquatic fern
           member:  #regnellidium__Regnellidium_diphyllum  small latex-containing aquatic fern of southern Brazil
     member:  #family_Salviniaceae__Salviniaceae  water ferns
        member:  #genus_Salvinia__Salvinia  type genus of the Salviniaceae: water ferns
           member:  #floating-moss__Salvinia_rotundifolia__Salvinia_auriculata  free-floating aquatic ferns
        member:  #genus_Azolla__Azolla  a genus of fern sometimes placed in its own family Azollaceae
           member:  #mosquito_fern__floating_fern__Carolina_pond_fern__Azolla_caroliniana  small free-floating aquatic fern from the eastern United States to tropical America; naturalized in western and southern Europe
     member:  #order_Ophioglossales__Ophioglossales  coextensive with the family Ophioglossaceae
        member:  #family_Ophioglossaceae__Ophioglossaceae  a family of succulent ferns of order Ophioglossales; cosmopolitan in distribution
           member:  #genus_Ophioglossum__Ophioglossum  the type genus of the fern family Ophioglossaceae
              member:  #adder's_tongue_fern__adder's_tongue__adder'stongue  ferns with fertile spikes shaped like a snake's tongue
           member:  #genus_Botrychium__Botrychium  grape fern; moonwort
              member:  #grape_fern__grapefern  a fern of the genus Botrychium having a fertile frond bearing small grapelike clusters of spore cases
           member:  #genus_Helminthostachys__Helminthostachys  1 species: terrestrial fern of southeastern Asia and Australia
              member:  #flowering_fern__floweringfern__Helminthostachys_zeylanica  Australasian fern with clusters of sporangia on stems of fertile fronds
     member:  #order_Filicales__Filicales__Polypodiales__order_Polypodiales  true (leptosporangiate) ferns
        member:  #family_Hymenophyllaceae__Hymenophyllaceae  terrestrial (hygrophytic) or epiphytic ferns: filmy ferns
           member:  #genus_Hymenophyllum__Hymenophyllum  type genus of the Hymenophyllaceae: filmy ferns
              member:  #filmy_fern__filmyfern__film_fern  any fern of the genus Hymenophyllum growing in tropical humid regions and having translucent leaves
           member:  #genus_Trichomanes__Trichomanes  bristle ferns; kidney ferns
              member:  #bristle_fern__bristlefern__filmy_fern__filmyfern  any fern of the genus Trichomanes having large pinnatifid often translucent fronds; most are epiphytic on tree branches and twigs or terrestrial on mossy banks
        member:  #family_Osmundaceae__Osmundaceae  large family of ferns widely distributed in temperate and tropical areas
           member:  #genus_Osmunda  type genus of the Osmundaceae
              member:  #osmund__flowering_fern__floweringfern  any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters
           member:  #genus_Leptopteris__Leptopteris  including some ferns sometimes placed in genus Todea
              member:  #crape_fern__crapefern__Prince-of-Wales_fern__Prince-of-Wales_feather__Prince-of-Wales_plume__Leptopteris_superba__Todea_superba  New Zealand with pinnate fronds and a densely woolly stalks; sometimes included in genus Todea
           member:  #genus_Todea__Todea  a genus of delicate ferns belonging to the family Osmundaceae
              member:  #crepe_fern__crepefern__king_fern__Todea_barbara  fern of rain forests of tropical Australia and New Zealand and South Africa
        member:  #family_Azollaceae__Azollaceae  used in some classifications for the genus Azolla
        member:  #family_Gleicheniaceae__Gleicheniaceae  a family of ferns belonging to order Filicales
           member:  #genus_Gleichenia__Gleichenia  type genus of Gleicheniaceae: leptosporangiate ferns with sessile sporangia; South Africa to Malaysia and New Zealand
           member:  #genus_Dicranopteris__Dicranopteris  terrestrial ferns of forest margin or open ground; pantropical
           member:  #genus_Diplopterygium__Diplopterygium  scandent thicket-forming ferns of Asia to western Pacific
              member:  #giant_scrambling_fern__Diplopterygium_longissimum  large scrambling fern forming large patches to 18 feet high; Pacific region and China
           member:  #genus_Sticherus__Sticherus  umbrella ferns; warm regions of Australia and New Zealand
              member:  #umbrella_fern__fan_fern__fanfern__Sticherus_flabellatus__Gleichenia_flabellata  large Australasian fern with fanlike repeatedly forked fronds; sometimes placed in genus Gleichenia
        member:  #family_Parkeriaceae__Parkeriaceae  coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae
           member:  #genus_Ceratopteris__Ceratopteris  water ferns
              member:  #floating_fern__water_sprite__watersprite__ceratopterispteridioide  aquatic fern of tropical America often used in aquariums
              member:  #Ceratopteris_thalictroides__floating_fern  pantropical aquatic fern
        member:  #family_Polypodiaceae__Polypodiaceae  ferns: a large family that in some classification systems has been subdivided into several families (including Aspleniaceae and Blechnaceae and Davalliaceae and Dennstaedtiaceae and Dryopteridaceae and Oleandraceae and Pteridaceae)
           member:  #genus_Polypodium__Polypodium  a genus of ferns belonging to the family Polypodiaceae and having rounded naked sori
              member:  #polypody  any of numerous ferns of the genus Polypodium
           member:  #genus_Aglaomorpha__Aglaomorpha  epiphytic ferns of tropical Asia
              member:  #bear's-paw_fern__Aglaomorpha_meyeniana  epiphytic fern with large fronds; Taiwan and Philippines
           member:  #genus_Campyloneurum__Campyloneurum  epiphytic ferns of tropical America
              member:  #strap_fern__strapfern  fern with long narrow strap-shaped leaves
           member:  #genus_Drymoglossum__Drymoglossum  epiphytic ferns of Madagascar to tropical Asia and New Guinea
           member:  #genus_Drynaria__Drynaria  large robust epiphytic ferns of tropical forest and scrub; Africa and Asia and Australia
              member:  #Drynaria_rigidula__basket_fern  giant epiphytic or lithophytic fern; Asia to Polynesia and Australia
           member:  #genus_Lecanopteris  epiphytic ferns of southeastern Asia to New Guinea
              member:  #lecanopteris  any of several bizarre ferns of the genus Lecanopteris having swollen hollow rhizomes that provide homes for symbiotic ants
           member:  #genus_Microgramma__Microgramma  epiphytic ferns of tropical America and Africa
              member:  #snake_polypody__snakepolypody__Microgramma-piloselloides  epiphytic ferns with long rhizomes; tropical America
           member:  #genus_Microsorium__Microsorium  tropical usually epiphytic ferns; Africa to Asia and Polynesia to Australia
              member:  #climbing_bird's_nest_fern__Microsorium_punctatum  tropical Africa to Australasia and Polynesia
           member:  #genus_Phlebodium__Phlebodium  chiefly epiphytic tropical ferns with free veins bearing sori
              member:  #golden_polypody__serpent_fern__serpentfern__rabbit's-foot_fern__Phlebodium_aureum__Polypodium_aureum  tropical American fern with brown scaly rhizomes cultivated for its large deeply lobed deep bluish-green fronds; sometimes placed in genus Polypodium
           member:  #genus_Platycerium__Platycerium  often epiphytic tropical Old World ferns
              member:  #staghorn_fern  any of various tropical ferns of the genus Platycerium having large flat lobed fronds often resembling the antlers of a stag
              member:  #common_staghorn_fern__elkhorn_fern__elkhornfern__platyceriumbifurcatum__Platycerium_alcicorne  commonly cultivated fern of Australia and southeastern Asia and Polynesia
           member:  #genus_Pyrrosia__Pyrrosia  epiphytic or lithophytic or terrestrial ferns of tropical Old World
              member:  #felt_fern__tongue_fern__Pyrrosia_lingua__Cyclophorus_lingua  east Asian fern having fronds shaped like tongues; sometimes placed in genus Cyclophorus
           member:  #genus_Solanopteris__Solanopteris  tropical American epiphytic ferns having rhizomes with tubers and roots as well as scales
              member:  #Solanopteris_bifrons__potato_fern  small epiphytic fern of South America with tuberous swellings along rhizomes
           member:  #genus_Cyclophorus__Cyclophorus  tropical Old World ferns having closely crowded circular sori and no indusia
           member:  #genus_Ceterach__Ceterach  small genus of Old World ferns; superseded in some classification systems which place plants of this genus in e.g. genera Asplenium and Pleurosorus
           member:  #genus_Phyllitis__Phyllitis__genus_Scolopendrium  a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)
        member:  #family_Vittariaceae__Vittariaceae  one of a number of families into which Polypodiaceae has been subdivided in some classification systems: genus Vittaria
           member:  #genus_Vittaria__Vittaria  tropical epiphytic ferns with straplike fronds
              member:  #grass_fern__grassfern__ribbon_fern__Vittaria_lineata  epiphytic fern found in lowland forests of tropical America
        member:  #family_Aspleniaceae__Aspleniaceae  one of a number of families into which Polypodiaceae has been subdivided in some classification systems; includes genera Asplenium; Pleurosorus; Schaffneria
           member:  #genus_Asplenium__Asplenium  in some classification systems placed in family Polypodiaceae
              member:  #spleenwort  any of various chiefly rock-inhabiting ferns of the genus Asplenium
              member:  #bird's_nest_fern__Asplenium_nidus  tropical Old World or Australian epiphytic fern frequently forming tufts in tree crotches
              member:  #Asplenium_scolopendrium__hart's-tongue__hart's-tongue_fern__Phyllitis_scolopendrium  Eurasian fern with simple lanceolate fronds
              member:  #scale_fern__scalefern__scaly_fern__scalyfern__Asplenium_ceterach__Ceterach_officinarum  small European fern with chaffy leathery fronds
           member:  #genus_Camptosorus__Camptosorus  classification used in some especially former systems for plants usually placed in genus Asplenium
           member:  #genus_Pleurosorus__Pleurosorus  small genus comprising terrestrial ferns; found in Chile and Spain and Morocco and Australia and New Zealand
           member:  #genus_Schaffneria__Schaffneria  1 species
              member:  #Schaffneria_nigripes__Asplenium_nigripes__Scolopendrium_nigripes  a fern of the genus Schaffneria
        member:  #family_Blechnaceae__Blechnaceae  one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum; Doodia; Sadleria; Stenochlaena; Woodwardia
           member:  #genus_Blechnum__Blechnum  in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
              member:  #hard_fern  any of several ferns of the genus Blechnum
           member:  #genus_Doodia  in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia
              member:  #doodia__rasp_fern  any fern of the genus Doodia having pinnate fronds with sharply dentate pinnae
           member:  #genus_Sadleria__Sadleria  low tree ferns with large fronds; in rain forests and on lava flows of Hawaiian Islands
           member:  #genus_Stenochlaena__Stenochlaena  large tropical ferns; some epiphytic climbers and some terrestrial bog ferns; Africa; Asia; Australasia
           member:  #genus_Woodwardia__Woodwardia  in some classification systems placed in family Polypodiaceae: chain ferns
              member:  #chain_fern__chainfern  a fern of the genus Woodwardia having the sori in chainlike rows
        member:  #family_Dicksoniaceae__Dicksoniaceae  tree ferns: genera Dicksonia; Cibotium; Culcita; Thyrsopteris
           member:  #genus_Dicksonia__Dicksonia  tree ferns of temperate Australasia having bipinnatifid or tripinnatifid fronds and usually marginal sori; in some classification systems placed in family Cyatheaceae
              member:  #soft_tree_fern__Dicksonia_antarctica  of Australia and Tasmania; often cultivated; hardy in cool climates
           member:  #genus_Cibotium__Cibotium  in some classification systems placed in family Cyatheaceae: ornamental tree ferns with coarse gracefully drooping fronds
              member:  #Scythian_lamb__Cibotium_barometz  Asiatic tree fern having dense matted hairs sometimes used as a styptic
           member:  #genus_Culcita__Culcita  includes some plants usually placed in e.g. genus Dicksonia: terrestrial ferns resembling bracken; tropical America; Malaysia to Australia and Polynesia; southwestern Europe and Atlantic islands
              member:  #false_bracken__falsebracken__Culcita_dubia  resembles Pteridium aquilinum; of Queensland Australia
           member:  #genus_Thyrsopteris  1 species
              member:  #thyrsopteris__Thyrsopteris_elegans  a terrestrial tree fern of South America
        member:  #family_Oleandraceae__Oleandraceae  one of a number of families into which Polypodiaceae has been subdivided in some classification systems
           member:  #genus_Oleandra__Oleandra  or family Polypodiaceae: tropical epiphytic or terrestrial ferns
              member:  #oleander_fern__Oleandra_neriiformis__Oleandra_mollis  tropical fern having leathery fronds resembling oleander; found from Asia to Polynesia
           member:  #genus_Arthropteris__Arthropteris  tropical and subtropical Old World epiphytic or lithophytic ferns
           member:  #genus_Nephrolepis__Nephrolepis  small genus of tropical ferns; sometimes placed in Polypodiaceae
              member:  #sword_fern__swordfern  any of several tropical ferns having more or less sword-shaped fronds including one from which the Boston fern developed
        member:  #family_Pteridaceae__Pteridaceae  one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided
           member:  #genus_Acrostichum__Acrostichum  in some classification systems placed in family Polypodiaceae
              member:  #leather_fern__leatherfern__goldenfern__Acrostichum_aureum  stout tropical swamp fern (especially tropical America) having large fronds with golden yellow sporangia covering the undersides
           member:  #genus_Actiniopteris__Actiniopteris  terrestrial ferns of tropical Asia and Africa
           member:  #genus_Adiantum__Adiantum  cosmopolitan genus of ferns: maidenhair ferns; in some classification systems placed in family Polypodiaceae or Adiantaceae
              member:  #maidenhair_fern__maidenhair  any of various small to large terrestrial ferns of the genus Adiantum having delicate palmately branched fronds
           member:  #genus_Anogramma__Anogramma  a genus of ferns belonging to the family Pteridaceae
              member:  #annual_fern__Jersey_fern__Anogramma_leptophylla  small short-lived fern of Central and South America
           member:  #genus_Cheilanthes__Cheilanthes  small evergreen ferns: lipferns; in some classifications placed in family Polypodiaceae or Adiantaceae
              member:  #lip_fern__lipfern  any of various terrestrial ferns of the genus Cheilanthes; cosmopolitan in arid and semi-arid temperate or tropical regions
              member:  #lace_fern__Cheilanthes_gracillima  small tufted fern of northwestern America
           member:  #genus_Coniogramme__Coniogramme  terrestrial ferns of Pacific islands and Asia
              member:  #bamboo_fern__Coniogramme_japonica  fast-growing sturdy Japanese fern; cultivated for their attractive broad dark-green pinnate fronds
           member:  #genus_Cryptogramma__Cryptogramma  sometimes placed in family Polypodiaceae or Cryptogrammataceae
              member:  #rock_brake  dwarf deciduous lithophytic ferns
              member:  #American_rock_brake__American_parsley_fern__Cryptogramma_acrostichoides  rock-inhabiting fern of northern North America growing in massive tufts and having fronds resembling parsley
           member:  #genus_Doryopteris__Doryopteris  small to medium tropical tufted ferns; sometimes placed in family Adiantaceae
              member:  #hand_fern__Doryopteris_pedata  tropical American fern with coarsely lobed to palmatifid fronds
           member:  #genus_Jamesonia__Jamesonia  xerophytic ferns of South America
           member:  #genus_Onychium__Onychium  small terrestrial ferns of Old World tropics and subtropics: claw ferns; sometimes placed in family Cryptogrammataceae
           member:  #genus_Pellaea__Pellaea  genus of chiefly small rock-loving ferns; in some classification systems it is placed in the family Polypodiaceae or Adiantaceae
              member:  #cliff_brake__cliffbrake__rock_brake  any of several small lithophytic ferns of tropical and warm temperate regions
              member:  #coffee_fern__Pellaea_andromedifolia  evergreen fern of California and Baja California
              member:  #button_fern__Pellaea_rotundifolia  fern of New Zealand and Australia having trailing fronds with dark green buttonlike leaflets
           member:  #genus_Pityrogramma__Pityrogramma  terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae
              member:  #Pityrogramma_argentea__silver_fern  fern of southern tropical Africa having fronds with white undersides
              member:  #silver_fern__Pityrogramma_calomelanos  tropical American fern having fronds with white undersides
              member:  #golden_fern__Pityrogramma_calomelanos_aureoflava  tropical American fern having fronds with light golden undersides
              member:  #gold_fern__Pityrogramma_chrysophylla  fern of West Indies and South America having fronds with bright golden-yellow undersides
           member:  #genus_Pteris__Pteris  large genus of terrestrial ferns of tropics and subtropics; sometimes placed in family Polypodiaceae
              member:  #brake.fern  any of various ferns of the genus Pteris having pinnately compound leaves and including several popular houseplants
              member:  #Pteris_cretica  cultivated in many varieties as houseplants
              member:  #spider_brake__spider_fern__Pteris_multifida  Asiatic fern introduced in America
              member:  #ribbon_fern__spider_fern__Pteris_serrulata  fern of North Africa and Azores and Canary Islands
     member:  #family_Adiantaceae__Adiantaceae  used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)
     member:  #family_Cyatheaceae__Cyatheaceae  tropical tree ferns
        member:  #genus_Cyathea__Cyathea  type genus of the Cyatheaceae: tree ferns of the tropical rain forest to temperate woodlands
           member:  #silver_tree_fern__sago_fern__black_tree_fern__Cyathea_medullaris  showy tree fern of New Zealand and Australia area having a crown of much-pinnated fronds with whitish undersides
     member:  #family_Davalliaceae__Davalliaceae  one of a number of families into which Polypodiaceae has been subdivided in some classification systems
        member:  #genus_Davallia  Old World tropical fern; in some classification systems placed directly in family Polypodiaceae
           member:  #davallia  any fern of the genus Davallia; having scaly creeping rhizomes
           member:  #hare's-foot_fern  either of two ferns of the genus Davallia having a soft gray hairy rootstock
           member:  #Canary_Island_hare's_foot_fern__Davallia_canariensis  fern of the Canary Islands and Madeira
           member:  #Australian_hare's_foot__Davallia_pyxidata  a hare's-foot fern of the genus Davallia
           member:  #squirrel's-foot_fern__ball_fern__Davalia_bullata__Davalia_bullata_mariesii__Davallia_Mariesii  feathery fern of tropical Asia and Malaysia
     member:  #family_Dennstaedtiaceae__Dennstaedtiaceae  one of a number of families into which Polypodiaceae has been subdivided in some classification systems
        member:  #genus_Dennstaedtia__Dennstaedtia  chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae
           member:  #hay-scented_fern__hayscentedfern__hay-scented__hayscented__scented_fern__scentedfern__boulderfern__Dennstaedtia_punctilobula  fern of eastern North America with pale green fronds and an aroma like hay
        member:  #genus_Pteridium__Pteridium  a genus of ferns belonging to the family Dennstaedtiaceae
           member:  #pasture_brake__pasturebrake__bracken__brake__Pteridium_aquilinum  large coarse fern often several feet high; essentially weed ferns; cosmopolitan
           member:  #bracken__Pteridium_esculentum  fern of southeastern Asia; not hardy in cold temperate regions
     member:  #family_Dryopteridaceae__Dryopteridaceae__Athyriaceae__family_Athyriaceae  alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
        member:  #shield_fern__buckler_fern__bucklerfern  any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori
        member:  #genus_Dryopteris__Dryopteris  large widespread genus of medium-sized terrestrial ferns; in some classification systems placed in Polypodiaceae
           member:  #broad_buckler-fern__broadbucklerfern__Dryopteris_dilatata  European shield fern
           member:  #wood_fern__wood-fern  any of various ferns of the genus Dryopteris
        member:  #genus_Athyrium__Athyrium  temperate and tropical lady ferns; in some classifications placed in family Polypodiaceae or in the genus Asplenium
           member:  #lady_fern__Athyrium_filix-femina  most widely grown fern of the genus Athyrium for its delicate foliage
           member:  #glade_fern__gladefern__silvery_spleenwort__silveryspleenwort__narrow-leaved_spleenwort__Athyrium_pycnocarpon__Diplazium_pycnocarpon  North American fern with narrow fronds on yellowish leafstalks
        member:  #genus_Cyrtomium__Cyrtomium  small genus of tropical Asiatic greenhouse ferns; in some classifications placed in Polypodiaceae
        member:  #genus_Cystopteris__Cystopteris  chiefly small perennial rock ferns: bladder ferns; in some classifications placed in Polypodiaceae
           member:  #bladder_fern__bladderfern  any fern of the genus Cystopteris characterized by a hooded indusium or bladderlike membrane covering the sori
        member:  #genus_Deparia__Deparia  classification used for 5 species of terrestrial ferns usually placed in other genera
           member:  #silvery_spleenwort__silveryspleenwort__Deparia_acrostichoides__Athyrium_thelypteroides  fern with elongate silvery outgrowths enclosing the developing spores
        member:  #genus_Diacalpa__Diacalpa  one species: delicate fern of foothills of Himalayas
        member:  #genus_Gymnocarpium__Gymnocarpium  oak ferns: in some classification systems included in genus Thelypteris
           member:  #oak_fern__oakfern__Gymnocarpium_dryopteris__Thelypteris_dryopteris  bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere
        member:  #genus_Lastreopsis__Lastreopsis  tropical terrestrial shield ferns
        member:  #genus_Matteuccia__Matteuccia__Pteretis__genus_Pteretis  small genus sometimes included in genus Onoclea; in some classifications both genera are placed in Polypodiaceae
           member:  #ostrich_fern__ostrichfern__shuttlecock_fern__shuttlecockfern__fiddlehead__Matteuccia_struthiopteris__Pteretis_struthiopteris__Onoclea_struthiopteris  tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes
        member:  #genus_Olfersia__Olfersia  genus of fern having only one species
        member:  #genus_Onoclea__Onoclea  1 species: sensitive fern; in some classifications included in Polypodiaceae
           member:  #sensitive_fern__sensitivefern__bead_fern__Onoclea_sensibilis  beautiful spreading fern of eastern North America and eastern Asia naturalized in western Europe; pinnately divided fronds show a slight tendency to fold when touched; pinnules enclose groups of sori in beadlike lobes
        member:  #genus_Polybotrya__Polybotrya__Polybotria__genus_Polybotria  tropical American ferns; usually terrestrial when young but scandent later
        member:  #genus_Polystichum__Polystichum  small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed in Polypodiaceae
           member:  #Christmas_fern__canker_brake__dagger_fern__evergreen_wood_fern__Polystichum_acrostichoides  North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds
           member:  #holly_fern__hollyfern  any of various ferns of the genus Polystichum having fronds with texture and gloss like holly
           member:  #soft_shield_fern__Polystichum_setiferum  European shield fern cultivated in many varieties
        member:  #genus_Rumohra__Rumohra  leatherleaf ferns: in some classifications included in genus Polystichum
           member:  #leatherleaf_fern__leatherleaffern__leather_fern__leatherfern__tendayfern__Rumohra_adiantiformis__Polystichum_adiantiformis  widely distributed fern of tropical southern hemisphere having leathery pinnatifid fronds
        member:  #genus_Tectaria__Tectaria  terrestrial or epilithic ferns of tropical rain forests
           member:  #Tectaria_cicutaria__button_fern  Jamaican fern having round buttonlike bulbils
           member:  #Indian_button_fern__Tectaria_macrodonta  fern of tropical Asia having round buttonlike bulbils
        member:  #genus_Woodsia  genus of small to medium-sized usually rock-inhabiting ferns of temperate and cold regions; in some classification systems placed in Polypodiaceae
           member:  #woodsia  any fern of the genus Woodsia
     member:  #family_Lomariopsidaceae__Lomariopsidaceae  small family of usually scandent ferns
        member:  #genus_Bolbitis__Bolbitis  terrestrial or less than normally scandent ferns of tropical regions of northern hemisphere
        member:  #genus_Lomogramma__Lomogramma  large scandent ferns of southeastern Asia
     member:  #family_Lophosoriaceae__Lophosoriaceae  very small family of tree ferns
        member:  #genus_Lophosoria__Lophosoria  1 species: tree fern of Central and South America
     member:  #family_Loxomataceae__Loxomataceae  very small family of New Zealand ferns
        member:  #genus_Loxoma__Loxoma  1 species of terrestrial ferns of New Zealand
     member:  #order_Marattiales__Marattiales  lower ferns coextensive with the family Marattiaceae
        member:  #family_Marattiaceae__Marattiaceae  constituting the order Marattiales: chiefly tropical eusporangiate ferns with gigantic fronds
           member:  #genus_Marattia__Marattia  type genus of the Marattiaceae: ferns having the sporangia fused together in two rows
              member:  #potato_fern__Marattia_salicina  large Australasian evergreen fern with an edible rhizome sometimes used as a vegetable by indigenous people
           member:  #genus_Angiopteris  1 species: tree fern
              member:  #angiopteris__angiopteri__giant_fern__giantfern__Angiopteris_evecta  highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall
           member:  #genus_Danaea__Danaea  fairly small terrestrial ferns of tropical America
     member:  #family_Cryptogrammataceae__Cryptogrammataceae  one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
     member:  #family_Thelypteridaceae__Thelypteridaceae  genera Thelypteris; Phegopteris; others
        member:  #genus_Thelypteris__Thelypteris  marsh ferns: in some classification systems considered part of genus Dryopteris in family Dryopteridaceae
           member:  #marsh_fern__marshfern__thelypterispalustri__Dryopteris_thelypteris  fern having pinnatifid fronds and growing in wet places; cosmopolitan in north temperate regions
        member:  #genus_Amauropelta__Amauropelta  epiphytic or terrestrial ferns of America and Africa and Polynesia
        member:  #genus_Christella  medium to large terrestrial ferns of tropical forests of Old World to Americas
           member:  #christella  any of several tropical ferns of the genus Christella having thin brittle fronds
        member:  #genus_Cyclosorus__Cyclosorus  small genus of terrestrial ferns of tropical and subtropical southern hemisphere
        member:  #genus_Macrothelypteris__Macrothelypteris  medium to large terrestrial ferns of tropical Asia to Polynesia and Australia; naturalized in Americas
        member:  #genus_Meniscium__Meniscium  terrestrial ferns of tropical Americas
        member:  #genus_Oreopteris__Oreopteris  3 species of ferns formerly included in genus Dryopteris or Thelypteris
           member:  #mountain_fern__Oreopteris_limbosperma__Dryopteris_oreopteris  common European mountain fern having fragrant lemon or balsam scented fronds
        member:  #genus_Parathelypteris__Parathelypteris  terrestrial ferns of warm and tropical Asia and North America
           member:  #New_York_fern__Parathelypteris_novae-boracensis__Dryopteris_noveboracensis  slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris
           member:  #Massachusetts_fern__Parathelypteris_simulata__Thelypteris_simulata  delicate feathery shield fern of the eastern United States; sometimes placed in genus Thelypteris
        member:  #genus_Phegopteris__Phegopteris  beech ferns: genus is variously classified: considered alternative name for genus Dryopteris or included in genus Thelypteris
           member:  #beech_fern__beechfern  any fern of the genus Phegopteris having deeply cut triangular fronds
  member:  #class_Psilopsida__Psilopsida__Psilotatae__class_Psilotatae  whisk ferns; comprising the family Psilotaceae or Psilotatae: vascular plants with no roots, partial if any leaf differentiation, and rudimentary spore sacs
     member:  #order_Psilotales__Psilotales  lower vascular plants having dichotomously branched sporophyte divided into aerial shoot and rhizome and lacking true roots
        member:  #family_Psilotaceae__Psilotaceae  small family of lower ferns having nearly naked stems and minute scalelike leaves
           member:  #genus_Psilotum__Psilotum  type genus of the Psilotaceae
              member:  #whisk_fern__whiskfern  chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots
  member:  #order_Psilophytales__Psilophytales  Paleozoic simple dichotomously branched plants of Europe and eastern Canada including the oldest known vascular land plants
     member:  #psilophyte  any plant of the order Psilophytales: a savannah plant
     member:  #family_Psilophytaceae__Psilophytaceae  Paleozoic plants
        member:  #genus_Psilophyton  type genus of the Psilophytaceae: genus of small wiry herbaceous Paleozoic plants with underground rhizomes and apical sporangia
           member:  #psilophyton  any plant or fossil of the genus Psilophyton
     member:  #family_Rhyniaceae__Rhyniaceae  primitive plants of the Paleozoic
        member:  #genus_Rhynia__Rhynia  type genus of the Rhyniaceae; small leafless dichotomously branching fossil plants with terminal sporangia and smooth branching rhizomes
        member:  #genus_Horneophyton__Horneophyton  Devonian fossil plant considered one of the earliest forms of vascular land plants; similar to genus Rhynia but smaller
  member:  #class_Sphenopsida__Sphenopsida__Equisetatae__class_Equisetatae  horsetails and related forms
     member:  #order_Equisetales__Equisetales  lower tracheophytes in existence since the Devonian
        member:  #family_Equisetaceae__Equisetaceae__horsetail_family__horsetailfamily  sole surviving family of the Equisetales: fern allies
           member:  #genus_Equisetum__Equisetum  horsetails; coextensive with the family Equisetaceae
              member:  #horsetail  perennial rushlike flowerless herbs with jointed hollow stems and narrow toothlike leaves that spread by creeping rhizomes; tend to become weedy; common in northern hemisphere; some in Africa and South America
  member:  #class_Lycopsida__Lycopsida__Lycopodiate__class_Lycopodiate  club mosses and related forms: includes Lycopodiales; Isoetales; Selaginellales; and extinct Lepidodendrales; sometimes considered a subdivision of Tracheophyta
     member:  #class_Lycopodineae__Lycopodineae  alternative designation for the class Lycopsida
     member:  #club_moss__clubmoss__lycopod  primitive evergreen mosslike plant with spores in club-shaped strobiles
     member:  #order_Lepidodendrales__Lepidodendrales  fossil arborescent plants arising during the Lower Devonian and conspicuous throughout the Carboniferous
        member:  #family_Lepidodendraceae__Lepidodendraceae  fossil plants characterized by conspicuous spirally arranged leaf scars on the trunk
     member:  #order_Lycopodiales__Lycopodiales  lower vascular plants coextensive with the family Lycopodiaceae; in some classifications includes the Selaginellaceae and Isoetaceae
        member:  #family_Lycopodiaceae__Lycopodiaceae__clubmoss_family  a family of ferns belonging to the order Lycopodiales
           member:  #genus_Lycopodium__Lycopodium  type and sole genus of the Lycopodiaceae; erect or creeping evergreen plants often used for Christmas decorations
     member:  #order_Selaginellales__Selaginellales  in some classifications included in Lycopodiales
        member:  #family_Selaginellaceae__Selaginellaceae  lesser clubmosses: terrestrial chiefly tropical plants resembling mosses
           member:  #genus_Selaginella__Selaginella  type and sole genus of the Selaginellaceae; evergreen mosslike plants: spike moss and little club moss
              member:  #spikemoss__spikemos__spikemos__littleclubmos  any of numerous fern allies of the genus Selaginella
     member:  #order_Isoetales__Isoetales  aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales
        member:  #family_Isoetaceae__Isoetaceae__quillwort_family__quillwortfamily  quillworts; coextensive with the genus Isoetes
           member:  #genus_Isoetes__Isoetes  type and genus of the Isoetaceae and sole extant genus of the order Isoetales
              member:  #quillwort  any of several spore-bearing aquatic or marsh plants having short rhizomes and leaves resembling quills; worldwide except Polynesia

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