Carex binervis

Tracheophyta MagnoliopsidaCyperaceaeCarexCarex binervis


A perennial herb of both wet and dry acidic soils found in a wide range of habitats from lowland heaths and Nardus grassland to heather moors, rocky hillsides and mountain summits. Its preferred sites are generally open but it also occurs in shady places, including deciduous and mixed woodlands. It is also occasionally found on coastal cliffs. 0-930 m (Glyder Fach, Caerns.) and reportedly to 975 m in the Scottish Highlands.



World Distribution

Oceanic Temperate element.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 6

Reaction (Ellenberg): 3

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.3

July Mean Temperature (Celsius): 14

Annual Precipitation (mm): 1243

Life form information

Height (cm): 90

Perennation - primary


Life Form - primary




Clonality - primary

Tussock-forming graminoid, may slowly spread

Distribution information

Count of 10km squares in Great Britain: 1927

Count of 10km squares in Ireland: 647

Count of 10km squares in the Channel Isles: 3

Atlas Change Index: -0.17

Weighted Changed Factor: 12

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.