Otanthus maritimus

Tracheophyta MagnoliopsidaAsteraceaeOtanthusOtanthus maritimus


A perennial herb of sand dunes and stabilised shingle. Lowland.



World Distribution

Mediterranean-Atlantic element; more frequent on stable Mediterranean beaches than on the stormy Atlantic coast.

Broad Habitats

Supralittoral sediment (strandlines, shingle, coastal dunes)

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

Life form information

Height (cm): 30

Perennation - primary


Life Form - primary




Clonality - primary

Rhizome far-creeping

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

Distribution information

Plantatt Conservation Status


JNCC Designations


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

Atlas (283c)
de Bolòs O, Vigo J
1995.  Flora dels Països Catalans, III. Pirolàcies-Compostes.
Curtis TGF, McGough HN
1988.  The Irish Red Data Book. 1. Vascular Plants.
Hurst CP
1901.  The range of Diotis candidissima Desf., in England and Wales, and in Ireland. Memoirs and Proceedings of the Manchester Literary and Philosophical Society. 46(1):1-8.
Lousley JE
1971.  Flora of the Isles of Scilly.
Marren PR
1999.  Britain's rare flowers.