Potamogeton xzizii W.D.J.Koch Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton angustifolius Name Homonyms Potamogeton xzizii W.D.J.Koch Potamogeton xzizii W.D.J.Koch ex Roth