Potamogeton filiformis Pursh Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton gramineus Name Homonyms Potamogeton filiformis Pers. Potamogeton filiformis Pursh ex Tuck. Potamogeton filiformis Raf. Potamogeton filiformis Nolte Potamogeton filiformis Pursh