Filix foemina subsp. aquilina (L.) Farw. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Dennstaedtiaceae genus Pteridium species Pteridium aquilinum Name Homonyms Filix foemina subsp. aquilina (L.) Farw.