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|Noun||1.||family 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, and Woodwardia|
fern family - families of ferns and fern allies
Blechnum, genus Blechnum - in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
genus Doodia, Doodia - in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia
genus Sadleria, Sadleria - low tree ferns with large fronds; in rain forests and on lava flows of Hawaiian Islands
genus Stenochlaena, Stenochlaena - large tropical ferns; some epiphytic climbers and some terrestrial bog ferns; Africa; Asia; Australasia