A perennial herb of maritime rocks and cliffs, growing in crevices, on ledges and on friable rock surfaces, sometimes in guano-enriched sites near sea-bird colonies. It also grows in short cliff-top grassland and on the masonry of piers and walls near the sea. It is indifferent to soil reaction. Lowland.
There has been little change in the distribution of S. rupicola since the 1962 Atlas. It may be under-recorded in W. Ireland.
Oceanic Temperate element; restricted to the coast of W. Europe.
Light (Ellenberg): 9
Moisture (Ellenberg): 6
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 5
Salt Tolerance (Ellenberg): 3
January Mean Temperature (Celsius): 5.2
July Mean Temperature (Celsius): 15.1
Annual Precipitation (mm): 1105
Count of 10km squares in Great Britain: 239
Count of 10km squares in Ireland: 169
Count of 10km squares in the Channel Isles: 13
Atlas Change Index: 0.3
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
Jalas & Suominen (1983)
An experimental investigation into the ecology of some maritime cliff species I. Field observations,
, Journal of Ecology, Volume 67, p.283-292, (1979)