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Definition of Polystichum
1. Noun. Small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed in Polypodiaceae.
Exact synonyms: Genus Polystichum
Generic synonyms: Fern Genus
Group relationships: Athyriaceae, Dryopteridaceae, Family Athyriaceae, Family Dryopteridaceae
Member holonyms: Canker Brake, Christmas Fern, Dagger Fern, Evergreen Wood Fern, Polystichum Acrostichoides, Holly Fern, Polystichum Setiferum, Soft Shield Fern
Generic synonyms: Fern Genus
Group relationships: Athyriaceae, Dryopteridaceae, Family Athyriaceae, Family Dryopteridaceae
Member holonyms: Canker Brake, Christmas Fern, Dagger Fern, Evergreen Wood Fern, Polystichum Acrostichoides, Holly Fern, Polystichum Setiferum, Soft Shield Fern