Catalogue no.:	V-1110310
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton x nitens f. maritimus
Family:	Potamogetonaceae
Collector:	Karl Johansson
Date:	1875 07 12
Country:	Sweden
Landskap:	Gotland
Socken:	Tingstäde
Locality:	Tingstäde träsk