Catalogue no.:	V-030651
Taxon:	Sparganium angustifolium Michx.
Label:	Sparganium natans
Family:	Typhaceae
Collector:	J. Ångström
Date:	1851 09
Country:	Sweden
Landskap:	Uppland
Socken:	Dannemora
Locality:	in Dannemorasjön