Sparganium angustifolium

Tracheophyta MagnoliopsidaSparganiaceaeSparganiumSparganium angustifolium


A perennial herb of clear, oligotrophic water, only rarely extending into mesotrophic conditions. It is most frequent in upland lakes but also grows in pools, rivers, streams, canals and ditches. Many sites are exposed to strong winds, but it prefers water 0.3-1.5 m deep, away from the most exposed shallows. 0-1005 m (Beinn Heasgarnich, Mid Perth).



World Distribution

European Boreal-montane element; also in E. Asia and N. America.

Broad Habitats

Standing water and canals

Light (Ellenberg): 8

Moisture (Ellenberg): 11

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3

July Mean Temperature (Celsius): 12.9

Annual Precipitation (mm): 1571

Length: 100

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)



Clonality - primary

Rhizome far-creeping

Distribution information

Count of 10km squares in Great Britain: 652

Count of 10km squares in Ireland: 207

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 1.66

Weighted Changed Factor: 15

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


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 (345c)
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Meusel H, Jäger E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.