Catalogue no.:	V-1114336
Taxon:	Potamogeton praelongus Wulfen
Label:	Potamogeton praelongus Wulfen
Family:	Potamogetonaceae
Collector:	Gunnar Björkman
Date:	1925 08 03
Country:	Sweden
Landskap:	Uppland
Socken:	Håtuna
Locality:	Signildsberg i Mälaren