Myriophyllum heterophyllum

Myriophyllum heterophyllum (English: twoleaf watermilfoil or broadleaf watermilfoil) is a species from the genus "Myriophyllum". It was first described by André Michaux.
Description.
"Myriophyllum heterophyllum" is also known in English as either the twoleaf watermilfoil or broadleaf watermilfoil. It is a popular plant to in Aquariums or Garden-ponds.  The species is often misidentified or overlooked due to issues in predictions of infestations and dispersal. It is often mistaken as the M. verticillatum in Europe or the M. hippuroides, M. laxum or M. pinnatum in North America due to their similar vegetation.
Range.
"Myriophyllum heterophyllum" is endemic to the eastern part of the United States. In the European Union the plant has found in Austria, Belgium, Germany, Spain, France, Hungary and the Netherlands. Citizen science observations also suggests occurrences in the western-part of the United States and Central America.
Invasive species.
In the European Union the species naturalised in the wild and poses a thread to the biodiversity. It grows rapidly and can form dense maths just underneath the water surface causing reduced availability of Oxygen and sunlight. The European Union considers the risk of the species spreading with in the EU, high and as a counter measure banned the sales of the species within the EU.