Rumex tuberosus subsp. euxinus Berod. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Polygonaceae genus Rumex species Rumex tuberosus Name Homonyms Rumex tuberosus subsp. euxinus (Klokov) Borodina Rumex tuberosus subsp. euxinus Berod.