Potamogeton parnassiifolius Schrad. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton polygonifolius Name Homonyms Potamogeton parnassiifolius Schrad. ex Mert. & W.D.J.Koch Potamogeton parnassiifolius Schrad.