Equisetum hyemale f. ramigerum A.A.Eaton Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum praealtum Name Homonyms Equisetum hyemale f. ramigerum A.A.Eaton Equisetum hyemale f. ramigerum Milde Equisetum hyemale var. ramigerum (Milde) Rouy