A perennial herb occurring on rocky sea-cliffs from the lowest zone of vascular plants to cliff-top grassland, on seaside walls, shingle banks and on drift-lines. It can tolerate high levels of nutrient enrichment, and can be abundant on cliff-tops adjoining sea-bird colonies. It also occurs rarely on upland lake shores, streamsides, river shingle, cliffs and in gullies. Artificial habitats include metalliferous mine spoil, disused railway lines, ballast and tips. 0-775 m (Fairfield, Westmorland), and to 970 m in the Scottish Highlands.
There has been no significant change in the distribution of S. uniflora since the 1962 Atlas.
Suboceanic Boreo-temperate element.
Light (Ellenberg): 8
Moisture (Ellenberg): 6
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 4
Salt Tolerance (Ellenberg): 3
January Mean Temperature (Celsius): 4
July Mean Temperature (Celsius): 14.1
Annual Precipitation (mm): 1263
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.