Potamogeton epihydrus

Tracheophyta MagnoliopsidaPotamogetonaceaePotamogetonPotamogeton epihydrus

Ecology

In the Outer Hebrides, this rhizomatous perennial grows in a few peaty lochans, in oligotrophic and base-poor water less than 1 m deep. It is also established in the mesotrophic Rochdale Canal and Calder & Hebble Navigation in N. England. Lowland.

Status

Native

World Distribution

Oceanic Boreo-temperate element; in Europe restricted to Britain but widespread in N. America.

Broad Habitats

Standing water and canals

Light (Ellenberg): 8

Moisture (Ellenberg): 12

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 1

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 4.5

July Mean Temperature (Celsius): 13

Annual Precipitation (mm): 1288

Length: 190

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Woodiness

Herbaceous

Clonality - primary

Irregularly fragmenting (mainly water plants)

Clonality - secondary

Detaching ramets above ground (often axillary)

Count of 10km squares in Great Britain: 2

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 0.11

Distribution information

Plantatt Conservation Status

Vulnerable

JNCC Designations

NBNSYS0000002135

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 (307b)
FNAEC (2000)
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)

British Red Data Books. 1. Vascular plants, edn 3,
Wigginton, M. J.
, Peterborough, (1999)