Dryopteris rigidiuscula Ching Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Dryopteridaceae genus Dryopteris species Dryopteris cycadina Name Homonyms Dryopteris rigidiuscula Ching ex K.H.Shing & J.F.Cheng Dryopteris rigidiuscula Ching