Catalogue no.:	V-1111112
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton (gramineus x perfoliatus) var. subperfoliatus
Family:	Potamogetonaceae
Collector:	Birger Lagerwall
Date:	1913 08
Country:	Sweden
Province:	Stockholms län
Landskap:	Uppland
Socken:	Lovö
Locality:	Drottningholm