A perennial herb of meadows, pastures and roadsides, often in river valley floodplains and showing a strong preference for sticky clay soils. In coastal areas it is frequently abundant in grazing marsh grasslands and on earthen sea walls. Lowland.
The map suggests little apparent change in the distribution of H. secalinum since the 1962 Atlas, apart from losses in a few outlying squares in N. and W. Britain. However, in some counties it is reported to be decreasing due to drainage, re-seeding and the conversion of grassland to arable. It can, however, withstand modest improvement. Its overall distribution is stable in Ireland.
European 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.