Polystichum aemulum (Aiton) Duterte, 1887 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Dryopteridaceae genus Dryopteris species Dryopteris aemula Name Homonyms Polystichum aemulum (Aiton) C.Presl Polystichum aemulum (Aiton) Duterte, 1887 Polystichum aemulum (Aiton) Corb.