Catalogue no.:	V-1113369
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus var. densifolius
Family:	Potamogetonaceae
Collector:	Carl Blom
Date:	1915 07 03
Country:	Sweden
Landskap:	Södermanland
Socken:	Nyköping
Locality:	Nyköping