Catalogue no.:	V-1113427
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus
Family:	Potamogetonaceae
Collector:	Rikard Plengiér
Date:	1943 07 21
Country:	Sweden
Landskap:	Uppland
Socken:	Estuna
Locality:	Estuna, Gillfjärden