A mat-forming perennial herb found in a wide range of damp or wet habitats, including carr, mires, fens, fen-meadows, swamps, marshes, in soakways and along spring-lines, and in dune-slacks and wet hollows in stabilised shingle. In very oceanic areas it grows in drier habitats, such as turfed wall-tops. 0-530 m (Tal-y-Fan, Caerns.).
H. vulgaris was mapped as `all records` in the 1962 Atlas. It has declined, and analysis of the database reveals that most of the losses have occurred since 1950. Drainage and development have steadily eliminated its sites in S.E. England.
Suboceanic Southern-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.