Equisetum giganteum var. poeppigianum A.Braun Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum giganteum Name Homonyms Equisetum giganteum var. poeppigianum A.Braun Equisetum giganteum var. poeppigianum A.Braun ex Milde