A rhizomatous perennial of open areas in marshes and fens, and in short, sedge-rich, damp grassland, calcareous flushes and stream borders which are subject to flooding. 0-490 m (Co. Durham).
B. compressus has suffered a severe decline throughout its range. In the 1962 Atlas, more than half the squares from which it was recorded had been lost by 1930. This decline has continued, with 40% of its post-1930 squares now gone. Much of the decline has been due to drainage, the loss of unimproved damp grasslands, falling water-tables, eutrophication and the cessation of grazing.
European Temperate element, with a continental distribution in W. Europe; also in C. Asia.
Count of 10km squares in Great Britain: 384
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: -1.28
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.