Myriophyllum spicatum

Tracheophyta MagnoliopsidaHaloragaceaeMyriophyllumMyriophyllum spicatum

Ecology

This species grows in a wide range of meso-eutrophic or eutrophic and often calcareous waters. These include lakes, ponds, rivers, canals and ditches. It may persist in managed ditches and rivers and colonises newly flooded mineral workings. It also grows in slightly brackish sites. 0-390 m (Drumore Loch, E. Perth).

Status

Native

World Distribution

Eurasian Temperate element, but naturalised in N. America so distribution is now Circumpolar Temperate.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 12

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 15.1

Annual Precipitation (mm): 907

Length: 250

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Woodiness

Herbaceous

Clonality - primary

Irregularly fragmenting (mainly water plants)

Distribution information

Count of 10km squares in Great Britain: 1409

Count of 10km squares in Ireland: 373

Count of 10km squares in the Channel Isles: 7

Atlas Change Index: 0.63

Weighted Changed Factor: 10

Weighted Change Factor Confidence (90%)

33

Distribution information

JNCC Designations

NBNSYS0000003608

PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.

Atlas text references

Atlas (150a)
The biology of Canadian weeds. 34. Myriophyllum spicatum L,
Aiken, S. G., Newroth P. R., and Wile I.
, Canadian Journal of Plant Science, Volume 59, p.201-215, (1979)

Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols,
Hultén, E., and Fries M.
, Königstein, (1986)

Vergleichende Chorologie der zentraleuropäischen Flora. Volume 2. 2 vols,
Meusel, H., Jäger E., Rauschert S., and Weinert E.
, Jena, (1978)

Aquatic plants in Britain and Ireland,
Preston, C. D., and Croft J. M.
, Colchester, (1997)