#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
  supertype:  #fern_family  families of ferns and fern allies
  member of:  #order_Filicales
  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

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