Potamogeton quinquenervius
 Potamogeton quinquenervius Hagstr. is an aquatic herb in the family Potamogetonaceae. It has a very widespread distribution in many riparian habitats. Potamogeton quinquenervius Hagstr. Kungl. Svenska Vetenskapsakad. Handl. n. s. lv. No. 5 130 (1916).