This perennial, rhizomatous herb is a species of damp and wet places, including pastures, grassy fens and marshes, especially in areas with standing water in winter. It is also able to colonise artificial habitats such as old peat diggings. Generally lowland, but reaching 360 m on Cronkley Fell (N.W. Yorks.).
Many sites were lost in C. & E. England before 1930, and losses have continued in most parts of its British range.
Eurasian Boreo-temperate element; widely naturalised outside its native range.
Count of 10km squares in Great Britain: 389
Count of 10km squares in Ireland: 73
Count of 10km squares in the Channel Isles: 1
Atlas Change Index: -0.89
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.