Eleogiton fluitans

Tracheophyta MagnoliopsidaCyperaceaeEleogitonEleogiton fluitans


A perennial herb found mainly on peaty, acidic substrates in, or on the margins of, slow-flowing streams, ditches, pools and the sheltered shores of some larger lakes and tarns, often in seasonally flooded sites. It also occurs in muddy hollows in grasslands and heaths, and the wet floors of disused quarries, sand- and gravel-pits. 0-435 m (Llyn Gwngu, Cards., and Styhead Tarn, Cumberland).



World Distribution

Oceanic Southern-temperate element, with a disjunct distribution.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 11

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 14.2

Annual Precipitation (mm): 1259

Length: 45

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)



Clonality - primary

Irregularly fragmenting (mainly water plants)

Distribution information

Count of 10km squares in Great Britain: 889

Count of 10km squares in Ireland: 286

Count of 10km squares in the Channel Isles: 3

Atlas Change Index: 0.37

Weighted Changed Factor: 41

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 (349d)
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.