Catalogue no.:	V-1114385
Taxon:	Potamogeton praelongus Wulfen
Label:	Potamogeton praelongus Wulfen
Family:	Potamogetonaceae
Collector:	Robert Hartman
Date:	1871
Country:	Sweden
Landskap:	Gästrikland
Socken:	Gävle
Locality:	Gefle [Gävle] Älgsjön