#genus_Thelypteris__Thelypteris  marsh ferns: in some classification systems considered part of genus Dryopteris in family Dryopteridaceae
  supertype:  #fern_genus  genera of ferns and fern allies
  member of:  #family_Thelypteridaceae
  member:  #marsh_fern__marshfern__thelypterispalustri__Dryopteris_thelypteris  fern having pinnatifid fronds and growing in wet places; cosmopolitan in north temperate regions

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