Polypodium vulgare f. falcatum P.O'Kelly Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Polypodiaceae genus Polypodium species Polypodium cambricum Name Homonyms Polypodium vulgare var. falcatum (Kellogg) Christ Polypodium vulgare subsp. falcatum (Kellogg) Christ Polypodium vulgare f. falcatum P.O'Kelly ex Druery Polypodium vulgare f. falcatum P.O'Kelly