Catalogue no.:	V-1110288
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton x curvifolius
Family:	Potamogetonaceae
Country:	Sweden
Landskap:	Södermanland
Socken:	Huddinge
Locality:	Stockholm in Drevviken
Remarks:	Herb. E. Fries