Catalogue no.:	V-1110291
Taxon:	Potamogeton gramineus x perfoliatus
Label:	Potamogeton (gramineus x perfoliatus) var. subgramineus
Family:	Potamogetonaceae
Collector:	G.Einar Du Rietz
Date:	1911 08 22
Country:	Sweden
Landskap:	Uppland
Socken:	Stockholm
Locality:	Stockholm, Bromma socken, Johanneslund