#genus_Polystichum__Polystichum  small to medium-sized terrestrial ferns especially holly ferns; in some classification systems placed in Polypodiaceae
  supertype:  fern_genus  genera of ferns and fern allies
  member:  Christmas_fern  holly_fern  soft_shield_fern
  member of:  family_Dryopteridaceae__Dryopteridaceae__Athyriaceae__family_Athyriaceae  alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
     member of:  class_Filicopsida__Filicopsida__Filicinae__class_Filicinae  ferns
        member of:  division_Pteridophyta__Pteridophyta  containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta
           member of:  kingdom_Plantae__Plantae__plant_kingdom__plantkingdom  taxonomic kingdom comprising all living or extinct plants

No statement uses or specializes genus_Polystichum; click here to add one.