Potamogeton pusillus

Tracheophyta MagnoliopsidaPotamogetonaceaePotamogetonPotamogeton pusillus

Ecology

A rhizomatous perennial found in standing or slowly flowing water in sheltered lakes and reservoirs, ponds, rivers, canals, ditches and flooded mineral workings. It favours mesotrophic to eutrophic water and tolerates slightly brackish conditions. 0-320 m (Stony Middleton, Derbys.).

Status

Native

World Distribution

Circumpolar Southern-temperate element.

© K.J. Walker, BSBI

Broad Habitats

Standing water and canals

Light (Ellenberg): 7

Moisture (Ellenberg): 12

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 6

1

Salt Tolerance (Ellenberg): 1

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 15.1

Annual Precipitation (mm): 877

Length: 70

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Woodiness

Herbaceous

Clonality - primary

Detaching ramets above ground (often axillary)

Comment on Clonality

Turions either axillary or (in autumn) terminal

Distribution information

Count of 10km squares in Great Britain: 806

Count of 10km squares in Ireland: 146

Count of 10km squares in the Channel Isles: 1

Atlas Change Index: 0.77

Weighted Changed Factor: 46

Weighted Change Factor Confidence (90%)

40

Distribution information

JNCC Designations

NBNSYS0000002138

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 (307d)
Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols,
Hultén, E., and Fries M.
, Königstein, (1986)

Pondweeds of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 8,
Preston, C. D.
, London, (1995)

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