Butomus umbellatus

Tracheophyta MagnoliopsidaButomaceaeButomusButomus umbellatus

Ecology

A submerged or emergent rhizomatous perennial which grows in calcareous, often eutrophic, water at the edges of rivers, lakes, canals, ditches and in swamps. It rarely sets seed but reproduces by lateral buds on the rhizome. Lowland.

Status

Native

World Distribution

Eurosiberian Temperate element; widely naturalised outside its native range.

© P. Shannon

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 11

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 16

Annual Precipitation (mm): 715

Life form information

Height (cm): 150

Length: 150

Perennation - primary

Perennial

Life Form - primary

Perennial hydrophyte (perennial water plant)

Woodiness

Herbaceous

Clonality - primary

Rhizome far-creeping

Clonality - secondary

Detaching ramets at or below ground

Comment on Clonality

Spread occasionally by detached lateral buds developing on rhizome

Distribution information

Count of 10km squares in Great Britain: 685

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.04

Weighted Changed Factor: 43

Weighted Change Factor Confidence (90%)

40

Distribution information

JNCC Designations

NBNSYS0000002108

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 (302b)
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.