Potamogeton obtusus Ducros Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Potamogetonaceae genus Potamogeton species Potamogeton alpinus Name Homonyms Potamogeton obtusus Ducros ex Gaudin Potamogeton obtusus Ducros