A short-lived perennial herb of shingle banks and stony beaches; also, more rarely, amongst loose rock and on eroding cliffs of sand and clay, and on the bare tops of chalk cliffs. The few inland records are of casual occurrences. Lowland.
G. flavum has been lost from some sites in Britain in recent years as a result of coastal defence work and trampling pressures on tourist beaches. However, its overall distribution shows little change since the 1962 Atlas.
Mediterranean-Atlantic element; widely naturalised outside its native range.
Light (Ellenberg): 9
Moisture (Ellenberg): 5
Reaction (Ellenberg): 8
Nitrogen (Ellenberg): 6
Salt Tolerance (Ellenberg): 3
January Mean Temperature (Celsius): 4.7
July Mean Temperature (Celsius): 15.5
Annual Precipitation (mm): 933
Count of 10km squares in Great Britain: 296
Count of 10km squares in Ireland: 64
Count of 10km squares in the Channel Isles: 8
Atlas Change Index: -0.39
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.