Potamogeton affinis Boenn. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton natans Name Homonyms Potamogeton affinis Boenn. ex Cham. & Schlecht. Potamogeton ×affinis A.Benn., 1889 Potamogeton affinis Boenn.