Phalaris arundinacea

Tracheophyta MagnoliopsidaPoaceaePhalarisPhalaris arundinacea

Ecology

A rhizomatous perennial herb of ditches, river banks, Alnus-Salix carr and the margins of canals, reservoirs, lakes and ponds, growing especially well where the water-table fluctuates widely. It prefers slightly drier sites than Glyceria maxima and Phragmites australis, and can occur on roadsides. 0-475 m (Llyn y Figyn, Cards.) and exceptionally at 845 m on Great Dun Fell (Westmorland).

Status

Native

World Distribution

Circumpolar Boreo-temperate element; widely naturalised outside its native range.

© G. Toone, IWNHAS

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 9

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

1

Salt Tolerance (Ellenberg): 1

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.6

Annual Precipitation (mm): 1044

Life form information

Height (cm): 200

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Life Form - secondary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Rhizome far-creeping

Distribution information

Count of 10km squares in Great Britain: 2449

Count of 10km squares in Ireland: 753

Count of 10km squares in the Channel Isles: 6

Atlas Change Index: 0.23

Weighted Changed Factor: 13

Weighted Change Factor Confidence (90%)

16

Distribution information

JNCC Designations

NBNSYS0000002669

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 (404a)
Comparative Plant Ecology,
Grime, J. P., Hodgson J. G., and Hunt R.
, London, (1988)

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

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