Catalogue no.:	V-1114841
Taxon:	Potamogeton berchtoldii Fieber
Label:	Potamogeton pusillus L.
Family:	Potamogetonaceae
Collector:	H.W. Arnell
Date:	1864 07 27
Country:	Sweden
Landskap:	Uppland
Socken:	Tierp
Locality:	Tierp