A perennial herb naturalised in moist or damp grassy areas, including marshy pasture, on hillsides and by streams and rivers, and sometimes established around farm buildings. Generally lowland, but reaching 385 m at Langdon Beck (Co. Durham).
P. ostruthium was formerly cultivated as a pot-herb or for veterinary purposes. It is very persistent and shows no sign of a change in its distribution since the 1962 Atlas.
Native of the mountains of C. & S.W. Europe.
Count of 10km squares in Great Britain: 184
Count of 10km squares in Ireland: 21
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: 0.03
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.