Irish wildflowers

Canadian Waterweed, Elodea canadensis

Canadian Waterweed
Elodea canadensis
Tím uisce
Family: Hydrocharitaceae

Flowering July-August. Submerged aquatic perennial. Introduced.
Inconspicuous pinkish flowers, only female are produced and all reproduction is vegetative. Transluscent dark-green leaves, usually in whorls of 3. Stems to 3m.
Still or slow-moving water to 3m+. Widespread, first Irish record 1836. Replaced in some locations by Nuttall's Waterweed.
An invasive plant in Ireland: Target 10 - Managing Invasive Alien species

My thanks to Dr. Michael Millane, Inland Fisheries Ireland for correcting the photographs previously shown, which were of Nuttall's Waterweed, E. nuttalli


Canadian Waterweed, Elodea canadensis       Canadian Waterweed, Elodea canadensis



Canadian Waterweed. All photographs: Dr. Michael Millane, Inland Fisheries Ireland

Please Contact me if you find mistakes. All images used are copyright.