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Porodica se sastoji od brojnih rodova sa preko 1700 vrsta<ref>[http://www.catalogueoflife.org/annual-checklist/2017/browse/tree/id/5bec48007b1d16a6933867df0645dc6b Catalogue of Life: 2017 Annual Checklist]</ref>, a najvažniji je oslad, koji je ovo [[Hrvatski jezik|hrvatsko]] ime dobio zbog slatkog okusa [[podanak|podanka]]. Naziv polypodium dolazi od [[Grčki jezik|grčkog]] <tt>polys</tt> (''mnogo'') i <tt>podium</tt> (''nožica''), zbog perastih režnjeva listova nalik nožicama. Kod [[Obična oslad|obične osladi]] (''[[Polypodium vulgare]]'') jestiv je samo podanak, i to u manjoj količini.
== Rodovi ==
{{div col|colscolwidth=424em}}
# ''[[AcrosorusArachniodes]]'' <small>Blume</small>
# ''[[AdenophorusArthropteris]]'' <small>J.Sm.</small>
# ''[[AlansmiaBolbitis]]'' <small>Schott</small>
# ''[[ArchigrammitisCampyloneurum]]'' <small>C.Presl</small>
# ''[[Ctenitis]]'' <small>(C.Chr.) C.Chr.</small>
# ''[[Arthromeris]]''
# ''[[× Cyclobotrya]]'' <small>Engels & Canestraro</small>
# ''[[Ascogrammitis]]''
# ''[[CalymmodonCyclodium]]'' <small>C.Presl</small>
# ''[[CampyloneurumCyclopeltis]]'' <small>J.Sm.</small>
# ''[[CeradeniaCyrtomium]]'' <small>C.Presl</small>
# ''[[ChrysogrammitisDavallia]]'' <small>Sm.</small>
# ''[[CochlidiumDavallodes]]'' <small>Copel.</small>
# ''[[CtenopterellaDictymia]]'' <small>J.Sm.</small>
# ''[[DasygrammitisDidymochlaena]]'' <small>Desv.</small>
# ''[[DictymiaDracoglossum]]'' <small>Christenh.</small>
# ''[[Draconopteris]]'' <small>Li Bing Zhang & Liang Zhang</small>
# ''[[Drynaria]]''
# ''[[EnterosoraDrynaria]]'' <small>(Bory) J.Sm.</small>
# ''[[GalactodeniaDryopolystichum]]'' <small>Copel.</small>
# ''[[GoniophlebiumDryopteris]]'' <small>Adans.</small>
# ''[[× Dryostichum]]'' <small>W.H.Wagner</small>
# ''[[Grammitis]]''
# ''[[Elaphoglossum]]'' <small>Schott ex J.Sm.</small>
# ''[[Gymnogrammitis]]''
# ''[[Goniophlebium]]'' <small>(Blume) C.Presl</small>
# ''[[Kontumia]]''
# ''[[LecanopterisGrammitis]]'' <small>Sw.</small>
# ''[[Hovenkampia]]'' <small>Li Bing Zhang & X.M.Zhou</small>
# ''[[Lellingeria]]''
# ''[[LemmaphyllumHypodematium]]'' <small>Kunze</small>
# ''[[LepisorusHypoderris]]'' <small>R.Br.</small>
# ''[[LeptochilusLastreopsis]]'' <small>Ching</small>
# ''[[LeucotrichumLecanopteris]]'' <small>Reinw.</small>
# ''[[LoxogrammeLemmaphyllum]]'' <small>C.Presl</small>
# ''[[LuismaLepisorus]]'' <small>(J.Sm.) Ching</small>
# ''[[MelpomeneLeptochilus]]'' <small>Kaulf.</small>
# ''[[MicrogrammaLeucostegia]]'' <small>C.Presl</small>
# ''[[MicropolypodiumLomagramma]]'' <small>J.Sm.</small>
# ''[[MicrosorumLomariopsis]]'' <small>Fée</small>
# ''[[Loxogramme]]'' <small>(Blume) C.Presl</small>
# ''[[Moranopteris]]''
# ''[[NeocheiropterisMaxonia]]'' <small>C.Chr.</small>
# ''[[NiphidiumMegalastrum]]'' <small>Holttum</small>
# ''[[Mickelia]]'' <small>R.C.Moran, Labiak & Sundue</small>
# ''[[Notogrammitis]]''
# ''[[OreogrammitisMicrogramma]]'' <small>C.Presl</small>
# ''[[ParaselligueaMicrosorum]]'' <small>Link</small>
# ''[[PeclumaNeocheiropteris]]'' <small>Christ</small>
# ''[[PhlebodiumNephrolepis]]'' <small>Schott</small>
# ''[[PhymatosorusOleandra]]'' <small>Cav.</small>
# ''[[PichisermollodesOlfersia]]'' <small>Raddi</small>
# ''[[Parapolystichum]]'' <small>(Keyserl.) Ching</small>
# ''[[Platycerium]]''
# ''[[PleopeltisPecluma]]'' <small>M.G.Price</small>
# ''[[PleurosoriopsisPhanerophlebia]]'' <small>C.Presl</small>
# ''[[PodosorusPhlebodium]]'' <small>(R.Br.) J.Sm.</small>
# ''[[PolypodiodesPhymatosorus]]'' <small>Pic.Serm.</small>
# ''[[PolypodiopterisPlatycerium]]'' <small>Desv.</small>
# ''[[PolypodiumPleocnemia]]'' <small>C.Presl</small>
# ''[[Pleopeltis]]'' <small>Humb. & Bonpl. ex Willd.</small>
# ''[[Prosaptia]]''
# ''[[PyrrosiaPleurosoriopsis]]'' <small>Fomin</small>
# ''[[RadiogrammitisPodosorus]]'' <small>Holttum</small>
# ''[[Polybotrya]]'' <small>Humb. & Bonpl. ex Willd.</small>
# ''[[Scleroglossum]]''
# ''[[Polypodium (Plantae)|Polypodium]]'' <small>L.</small>
# ''[[Selliguea]]''
# ''[[Polystichopsis]]'' <small>(J.Sm.) Holttum</small>
# ''[[Serpocaulon]]''
# ''[[StenogrammitisPolystichum]]'' <small>Roth</small>
# ''[[Pteridrys]]'' <small>Christensen & Ching</small>
# ''[[Synammia]]''
# ''[[TerpsichorePyrrosia]]'' <small>Mirb.</small>
# ''[[ThemeliumRumohra]]'' <small>Raddi</small>
# ''[[ThylacopterisSelliguea]]'' <small>Bory</small>
# ''[[TomophyllumSerpocaulon]]'' <small>A.R.Sm.</small>
# ''[[TricholepidiumStigmatopteris]]'' <small>C.Chr.</small>
# ''[[XiphopterellaTectaria]]'' <small>Cav.</small>
# ''[[Teratophyllum]]'' <small>Mett. ex Kuhn</small>
# ''[[Xiphopteris]]''
# ''[[Thylacopteris]]'' <small>Kunze ex J.Sm.</small>
# ''[[Zygophlebia]]''
# ''[[Tricholepidium]]'' <small>Ching</small>
# ''[[Triplophyllum]]'' <small>Holttum</small>
{{div col end}}
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