Catalogue no.:	V-1113584
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus f. macrophyllus
Family:	Potamogetonaceae
Collector:	Blytt
Date:	1855
Country:	Norway
Province:	Buskerud
District:	Modum
Locality:	Modum