Equisetum ×samuelssonii W.Koch ex Rothm., 1944 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum moorei Name Homonyms Equisetum ×samuelssonii W.Koch ex Rothm., 1944 Equisetum ×samuelssonii W.D.J.Koch