This perennial herb usually grows in damp or wet habitats, including damp woods, Alnus and Salix carr, the banks of rivers, streams, canals and ditches, by ponds and in marshes and other wet places. It has been recorded on newly surfaced forestry rides, and can also tolerate occasional flooding by brackish water. Lowland.
The distribution has been stable since the 1962 Atlas. Some records in the north of its range represent casual occurrences.
Eurosiberian Temperate element; also in E. Asia and widely naturalised outside its native range.
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.