Equisetum fluviatile var. attenuatum Milde Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum fluviatile Name Homonyms Equisetum fluviatile var. attenuatum (Milde) A.A.Eaton Equisetum fluviatile f. attenuatum (Milde) Vict. ex Dutilly & Lepage Equisetum fluviatile var. attenuatum Milde Equisetum fluviatile f. attenuatum (Milde) Vict.