Potamogeton polygonifolius

Tracheophyta MagnoliopsidaPotamogetonaceaePotamogetonPotamogeton polygonifolius

Ecology

This rhizomatous perennial herb may grow as an aquatic in shallow water in lakes, pools, the backwaters of rivers, streams and ditches, or in a dwarf, subterrestrial state in wet Sphagnum lawns or `brown moss` communities. It is usually restricted to acidic water, only rarely occurring in highly calcareous but nutrient-poor sites. 0-780 m (Lochan an Tairbh-uisge, Mid Perth).

Status

Native

World Distribution

Suboceanic Temperate element; also in N. America.

Broad Habitats

Light (Ellenberg): 8

Moisture (Ellenberg): 10

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 2

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.3

July Mean Temperature (Celsius): 13.9

Annual Precipitation (mm): 1254

Height (cm): 10

Length: 70

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Life Form - secondary

Hemicryptophyte

Comment on Life Form

"When growing in mud, it is a rhizomatous hemicryptophyte."

Woodiness

Herbaceous

Clonality - primary

Irregularly fragmenting (mainly water plants)

Clonality - secondary

Rhizome far-creeping

Count of 10km squares in Great Britain: 1841

Count of 10km squares in Ireland: 582

Count of 10km squares in the Channel Isles: 5

Weighted Changed Factor: -18

Weighted Change Factor Confidence (90%)

13

JNCC Designations

NHMSYS0000461999