Carex otrubae

Tracheophyta MagnoliopsidaCyperaceaeCarexCarex otrubae


A perennial of wet habitats, usually on heavy soils. It is found on the sides of streams and ponds, in ditches, swamps, wet lowland meadows and pastures, at the upper edge of saltmarshes, and, less commonly, on damp roadsides and hedge banks. In N. England and Scotland it is essentially a coastal plant. It generally grows in slightly drier conditions than C. vulpina, tending to avoid standing water. Lowland.



World Distribution

Eurosiberian Southern-temperate element.

© G. Toone, IWNHAS

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 6

Moisture (Ellenberg): 8

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7


Salt Tolerance (Ellenberg): 2

January Mean Temperature (Celsius): 4

July Mean Temperature (Celsius): 15.3

Annual Precipitation (mm): 939

Life form information

Height (cm): 100

Perennation - primary


Life Form - primary




Clonality - primary

Tussock-forming graminoid, may slowly spread

Distribution information

Count of 10km squares in Great Britain: 1636

Count of 10km squares in Ireland: 405

Count of 10km squares in the Channel Isles: 9

Atlas Change Index: -0.14

Weighted Changed Factor: 2

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.