Catalogue no.:	V-1113387
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus
Family:	Potamogetonaceae
Collector:	S. Nilsson
Date:	1959 07
Country:	Sweden
Landskap:	Uppland
Socken:	Estuna
Locality:	sjön Erken, Svanbergaviken