Polystichum concavum Standish Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Dryopteridaceae genus Arachniodes species Arachniodes standishii Name Homonyms Polystichum concavum T.Moore Polystichum concavum Standish Polystichum concavum Standish ex J.Dix