Gymnogramma sulphurea var. argentea Christ Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Polypodiales family Pteridaceae genus Pityrogramma species Pityrogramma sulphurea Name Homonyms Gymnogramma sulphurea var. argentea Christ ex Urb. Gymnogramma sulphurea var. argentea Christ