Polystichum crassinervium Ching Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Dryopteridaceae genus Polystichum species Polystichum crassinervium Name Homonyms Polystichum crassinervium Ching ex W.M.Chu & Z.R.He Polystichum crassinervium Ching