Potamogeton gramineus var. gramineus Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton gramineus Name Homonyms Potamogeton gramineus f. gramineus Potamogeton gramineus var. gramineus