Equisetum ×litorale Kühlew. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Polypodiopsida order Equisetales family Equisetaceae genus Equisetum species Equisetum litorale Name Homonyms Equisetum ×litorale Kühlew. ex Rupr. Equisetum ×litorale Kühlew.