Catalogue no.:	V-1111107
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton x nitens f. extensus
Family:	Potamogetonaceae
Collector:	Gustaf Tiselius
Exsiccate:	Tiselius, Potamog. Scand. 158
Date:	1894 08 13
Country:	Sweden
Landskap:	Uppland
Socken:	Boo
Locality:	Södermanland, Värmdön, Bo, in sinu mari Rörsundsvik