Allium ursinum (Ramsons)
A bulbous perennial herb of moist woodlands, sometimes growing in more open situations such as riversides and hedge banks and occasionally in rock crevices, in scree and on coastal cliff ledges. Regeneration is primarily by seed. Generally lowland, but reaching c. 450 m at Great Clowder, Malham (Mid-W. Yorks.).
There is little evidence of significant distributional change in this species since the 1962 Atlas, where it was mapped as `all records`.
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.
Atlas text references
Comparative Plant Ecology,
, London, (1988)
Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols,
, Königstein, (1986)
, London, (1996)
Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols,
, Jena, (1965)
Biological Flora of the British Isles. No. 63. Allium ursinum L,
, Journal of Ecology, Volume 45, p.1003-1010, (1957)