Flora of Northern Ireland
Potamogeton natans
© Paul Hackney
Potamogeton natans
© Ian Dodkins
Potamogeton natans
(Map updated: March 2008)
 

One of the commonest of the pondweeds. It grows in still freshwater, rooted in the bottom mud. Submerged leaves are grass-like, but higher up the shoot it produces oval floating leaves about four inches long.

All names: Potamogeton natans L.; Potamogeton hibernicus (Hagstr.) Druce