Sagittaria sagittifolia

Tracheophyta MagnoliopsidaAlismataceaeSagittariaSagittaria sagittifolia


A perennial herb of shallow, still or slowly flowing, calcareous and eutrophic water. In major rivers it may be present only as submerged leaves, but in ditches, lakes, ponds and canals it often produces emergent leaves and flowers. It perennates as tubers produced on stolons in the leaf axils. Lowland.



World Distribution

Eurosiberian Boreo-temperate element.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 11

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 6


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 15.8

Annual Precipitation (mm): 747

Length: 95

Perennation - primary


Life Form - primary

Perennial hydrophyte (perennial water plant)



Clonality - primary

Detaching ramets at or below ground

Distribution information

Count of 10km squares in Great Britain: 640

Count of 10km squares in Ireland: 114

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.44

Weighted Changed Factor: 36

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 (302a)
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Preston CD, Croft JM
1997.  Aquatic plants in Britain and Ireland.