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 Invasive alien species

Invasive alien species

 Native species

Native species

 Species present in Abitibi-Temiscamingue

Species present in Abitibi-Temiscamingue

 Risk of skin reactions when coming into contact with toxic sap

Risk of skin reactions when coming into contact with toxic sap


EURASIAN WATER-MILFOIL

Myriophyllum spicatum

  © Bibiane Racette

 © Bibiane Racette

General characteristics:

 © Richard Carignan

© Richard Carignan

  • Perennial aquatic plant submerged and visible on the surface of the water.
  • Whorls composed of three to six leaves, feather-like appearance.
  • Leaves divided and composed of twelve to twentyfour pairs of leaflets, the end of which appears to be truncated.
  • Flowers in spikes on the emergent stems, very red buds (flowering in July).
  • Can be distinguished from native water milfoil species by its tendency to have leaves grouped much closer together, by the presence of soft leaves that are out of water and by its higher abundancy of leaflets.
  • A particularly strong stem that reproduces quickly, which can make swimming and aquatic recreational activities extremely unpleasant or even perilous

A single small fragment is enough for a new colony of Eurasian water-milfoil to invade a lake.

 Northern water-milfoil  Myriophyllum sibiricum  Fishhook waterflea  (Cercopagis pengoi)  

Northern water-milfoil  Myriophyllum sibiricum
Fishhook waterflea  (Cercopagis pengoi)
 

 Eurasian water-milfoil Myriophyllum spicatum

Eurasian water-milfoil Myriophyllum spicatum

If you think you observed an invasive alien specie, please contact us.