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|Noun||1.||genus Polystichum - small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed 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
canker brake, Christmas fern, dagger fern, evergreen wood fern, Polystichum acrostichoides - North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds
holly fern - any of various ferns of the genus Polystichum having fronds with texture and gloss like holly