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.
The overall British range of S. sagittifolia is stable, though in some areas the plant has been lost from ditches and is now restricted to larger rivers (Tarpey & Heath, 1990). In Ireland it is now better recorded than in the 1962 Atlas, and has spread through canals. It rarely colonises new habitats, but is sometimes deliberately introduced to ponds.
Eurosiberian Boreo-temperate element.
Perennation - primary
Life Form - primary
Clonality - primary
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.