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|Noun||1.||Onoclea - one species: sensitive fern; in some classifications included in Polypodiaceae|
fern genus - genera of ferns and fern allies
Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae - alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems