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 | ... HYDROPTERIDALES ... (2 elements)fr (2) : HYDROPTERIDALES |
 | ... DROPTERIDA ... (4 elements) HYDROPTERIDALE · HYDROPTERIDALES ... HYDROPTERI ... (9 elements) DIHYDROPTERIDINE · HYDROPTERIDALE · HYDROPTERIDALES · HYDROPTERIDEES · HYDROPTERIS · PYRUVOYLTETRAHYDROPTERIN ... OPTERIDALE ... (10 elements) DRYOPTERIDALES · GLOSSOPTERIDALES · HYDROPTERIDALE · HYDROPTERIDALES · LYGINOPTERIDALES ... PTERIDALES ... (10 elements) DRYOPTERIDALES · GLOSSOPTERIDALES · HYDROPTERIDALES · LYGINOPTERIDALES · PTERIDALES ... ROPTERIDAL ... (4 elements) HYDROPTERIDALE · HYDROPTERIDALES ... YDROPTERID ... (7 elements) DIHYDROPTERIDINE · HYDROPTERIDALE · HYDROPTERIDALES · HYDROPTERIDEES |
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