Catalogue no.:	V-1111110
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton x nitens f. maritimus
Family:	Potamogetonaceae
Collector:	Gustaf Tiselius
Exsiccate:	Tiselius, Potamog. Suec. exs. 35
Date:	1898 07 27
Country:	Sweden
Landskap:	Uppland
Socken:	Kungs-Husby
Locality:	in lacu Mälaren ad grönsö