Potamogetonaceae
Systematics :
Kingdom: Plantae
Artificial group: Vascular plant (Tracheophytes)
Superphylum: Spermatophyte
Phylum: Magnoliophyta
Class: Liliopsida
Family: Potamogetonaceae
Other names: tjønnaksfamilien, tjørnaksfamilien
Norwegian name: Tjernaksfamilien