#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 of:  #family_Dryopteridaceae
  member:  #Christmas_fern__canker_brake__dagger_fern__evergreen_wood_fern__Polystichum_acrostichoides  North American evergreen fern having pinnate leaves and dense clusters of lance-shaped fronds
  member:  #holly_fern__hollyfern  any of various ferns of the genus Polystichum having fronds with texture and gloss like holly
  member:  #soft_shield_fern__Polystichum_setiferum  European shield fern cultivated in many varieties

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