A shortly rhizomatous perennial grass, most frequently found in unimproved, species-rich, well-grazed grassland on infertile, calcareous soils and favouring well-drained slopes. However, it also occurs in old meadows and pastures on neutral and sometimes acidic soils, in the drier parts of fens, and occasionally in soligenous mires. 0-720 m (Knock Fell, Westmorland).
There has been little change in the range of B. media since the 1962 Atlas. However, the map suggests some decline at the 10-km scale and local floras suggest that the ploughing and improvement of grasslands has led to a decline in frequency in many areas.
European Temperate element.
Light (Ellenberg): 8
Moisture (Ellenberg): 5
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 3
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.5
July Mean Temperature (Celsius): 14.9
Annual Precipitation (mm): 971
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.