Catalogue no.:	V-1114340
Taxon:	Potamogeton praelongus Wulfen
Label:	Potamogeton praelongus f. typicus
Family:	Potamogetonaceae
Collector:	Gustaf Tiselius
Exsiccate:	Tiselius, Potamog. Suec. exs. 88
Date:	1884 07 26
Country:	Sweden
Landskap:	Uppland
Socken:	Östra Ryd
Locality:	Ryd, in lacu Mälaren ad Gällövstam