Aspidium deltoideum (Sw.) E.Fourn. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Thelypteridaceae genus Steiropteris species Steiropteris deltoidea Name Homonyms Aspidium deltoideum (Sw.) Sw. Aspidium deltoideum (Sw.) E.Fourn.