Catalogue no.:	V-1113374
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus
Family:	Potamogetonaceae
Collector:	Erik Asplund
Date:	1924 07 25
Country:	Sweden
Landskap:	Södermanland
Socken:	Muskö
Locality:	Älvsnabben