A perennial herb typical of permanent, still or slow-flowing mesotrophic to eutrophic waters, extending into brackish water in coastal grazing marshes. It also grows in a terrestrial form on wet mud as water levels drop. Lowland.
C. obtusangula was under-recorded for the 1962 Atlas. There is no evidence of any genuine change in its distribution.
Suboceanic Southern-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.