Oenanthe lachenalii

Tracheophyta MagnoliopsidaUmbelliferaeOenantheOenanthe lachenalii


In coastal areas this perennial herb occurs in the uppermost parts of saltmarshes, in rough grassland in drained estuarine marshes, by brackish dykes and the lower reaches of tidal rivers. Inland, it is found in base-enriched habitats, including marshes, fen-meadows and tall-herb fen. Lowland.



World Distribution

Suboceanic Southern-temperate element.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 8

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 5


Salt Tolerance (Ellenberg): 3

January Mean Temperature (Celsius): 4.3

July Mean Temperature (Celsius): 15.4

Annual Precipitation (mm): 957

Life form information

Height (cm): 100

Perennation - primary


Life Form - primary




Clonality - primary

Little or no vegetative spread

Distribution information

Count of 10km squares in Great Britain: 551

Count of 10km squares in Ireland: 118

Count of 10km squares in the Channel Isles: 3

Atlas Change Index: -0.36

Weighted Changed Factor: -26

Weighted Change Factor Confidence (90%)


Distribution information

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.