Potamogeton caespitosus Rchb.f. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton rutilus Name Homonyms Potamogeton caespitosus Humn. Potamogeton caespitosus Nolte Potamogeton caespitosus Rchb.f.