Catalogue no.:	V-1113436
Taxon:	Potamogeton perfoliatus L.
Label:	Potamogeton perfoliatus f. gracilis
Family:	Potamogetonaceae
Collector:	Tord Ingmar
Date:	1942 08 10
Country:	Sweden
Landskap:	Dalarna
Socken:	Gagnef
Locality:	Björka älv
Habitat:	Sandbotten