Equisetum semifoliosum Thore ex Loisel., 1928 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum fluviatile Name Homonyms Equisetum semifoliosum Thore ex Loisel., 1928 Equisetum semifoliosum Thore