Catalogue no.:	V-1113341
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus
Family:	Potamogetonaceae
Collector:	K.F. Dusén
Date:	1870 08 11
Country:	Sweden
Landskap:	Östergötland
Socken:	Norra Vi
Locality:	Ydre: Sommen i Vassviken