A perennial herb of sand dunes and stabilised shingle. Lowland.
First recorded in our area in the early 17th century, this species has undergone a major decline since 1850. It is now restricted as a native to just two sites in Co. Wexford, where populations appear to be stable; it has been introduced to a third locality. It is extinct in Britain, the last records being from Cornwall in 1933 and the Isles of Scilly in 1936. It was last recorded in the Channel Islands (on Jersey) in 1926.
Mediterranean-Atlantic element; more frequent on stable Mediterranean beaches than on the stormy Atlantic coast.
Light (Ellenberg): 9
Moisture (Ellenberg): 2
Reaction (Ellenberg): 5
Nitrogen (Ellenberg): 2
Salt Tolerance (Ellenberg): 3
January Mean Temperature (Celsius): 5.1
July Mean Temperature (Celsius): 16
Annual Precipitation (mm): 874
Count of 10km squares in Great Britain: 23
Count of 10km squares in Ireland: 6
Count of 10km squares in the Channel Isles: 3
Atlas Change Index: -1.49
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
Flora dels Països Catalans, III. Pirolàcies-Compostes,
, Barcelona, (1995)
The Irish Red Data Book. 1. Vascular Plants,
, Dublin, (1988)
The range of Diotis candidissima Desf., in England and Wales, and in Ireland,
, Memoirs and Proceedings of the Manchester Literary and Philosophical Society, Volume 46(1), p.1-8, (1901)
Flora of the Isles of Scilly,
, Newton Abbot, (1971)
Britain's rare flowers,
, London, (1999)