Myriophyllum aquaticum (Vell.) Verdc.

English Parrot’s-feather ISEIA: B1 – Watch List. IAS of EU concern.
Lëtzebuergesch Brasilien-Waassergras EASIN
Français Myriophylle du Brésil Wikipedia: Wikipedia - English - Parrot's-feather Wikipedia - Français - Myriophylle du Brésil Wikipedia - Deutsch - Brasilianisches Tausendblatt
Deutsch Brasilianisches Tausendblatt Wikispecies: Wikispecies - Myriophyllum_aquaticum
Nederlands Parelvederkruid Back to the list of neophytes

Report the species

Report Myriophyllum aquaticum to the National Museum of Natural History.

Importance and distribution in Luxembourg

Distribution map of Myriophyllum aquaticum (Vell.) Verdc. in Luxembourg. Recorder-LUX & iNaturalist, 2019.08.21.

Myriophyllum aquaticum is an invasive submerged/emergent aquatic weed characteristic of sub-tropical to warm-temperate regions, but found as far north as the UK. The species thrives in well-lit ponds, ditches, canals and slow-running streams. It is most often found in eutrophic water bodies and is able to grow as a terrestrial plant when ponds dry out, making it well adapted to medium water level fluctuations (Source:

For Luxembourg, a single occurrence is documented. In June 2000, the plant was found in a pond (dead stream branch of the Alzette river) in Freschewisen, municipality of Roeser (Colling & Krippel 2003).

Risk assessment

ISEIA protocol: B1 (2+2+3+3) = Watch List (Ries et al. 2013: 18).

Bibliography concerning Luxembourg

  • Colling, G. & Y. Krippel, 2003. Notes floristiques. Observations faites au Luxembourg (2000-2001). Bull. Soc. Nat. luxemb. 103: 3-23. [PDF 342 KB]
  • Ries, C., Y. Krippel, M. Pfeiffenschneider & S. Schneider, 2013. Environmental impact assessment and black, watch and alert list classification after the ISEIA Protocol of non-native vascular plant species in Luxembourg. Bull. Soc. Nat. luxemb. 114: 15-21. [PDF 652 KB]

Suggested citation of this webpage

Ries, C. & M. Pfeiffenschneider (Eds.), 2019. Myriophyllum aquaticum (Vell.) Verdc. In: - Invasive Alien Species in Luxembourg. URL: [21.08.2019].

 Last updated on Friday, April 20, 2018.