A rhizomatous perennial of fens, ditches and streamsides, and tall vegetation in wet meadows, always found where the substrate or water is base-rich. It is also recorded from open fen carr. Lowland.
This handsome plant has declined since 1930 because of drainage and agricultural intensification on grazing marshes, and it is now often restricted to relict linear habitats such as river banks and roadside ditches. It can, however, still be locally abundant in unimproved wet grasslands with traditionally managed drainage systems.
Eurosiberian Boreo-temperate element.
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
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1989)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.