A tufted perennial herb of damp woodland and woodland rides, often growing in considerable shade. It can become dominant in favoured habitats, such as in woods that are seasonally flooded. Generally lowland, but reaching 320 m in Swaledale (N.W. Yorks.).
There has been no significant change in the overall distribution of this species since the 1962 Atlas.
European Temperate element; also in C. and E. Asia.
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.