Catalogue no.:	V-1111108
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton x curvifolius
Family:	Potamogetonaceae
Collector:	C.F. Nyman
Country:	Sweden
Landskap:	Uppland
Socken:	Värmdö
Locality:	Stockholm, Värmdön
Remarks:	Herb. Hartman