Carex extensa

Tracheophyta MagnoliopsidaCyperaceaeCarexCarex extensa

Ecology

A perennial herb, mainly confined to areas within reach of sea water or spray. It is found on muddy or sandy estuarine flats, at the uppermost levels of saltmarshes and the edges of brackish ditches, and on moist coastal rocks and low cliffs. It often grows with C. distans. Lowland.

Status

Native

World Distribution

European Southern-temperate element.

© G. Toone, IWNHAS

Broad Habitats

Littoral sediment (includes saltmarsh and saltmarsh pools)

Light (Ellenberg): 8

Moisture (Ellenberg): 7

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 4

January Mean Temperature (Celsius): 4.5

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1228

Height (cm): 40

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Tussock-forming graminoid, may slowly spread

Count of 10km squares in Great Britain: 440

Count of 10km squares in Ireland: 199

Count of 10km squares in the Channel Isles: 9

Atlas Change Index: -0.23

Weighted Changed Factor: 38

Weighted Change Factor Confidence (90%)

42

JNCC Designations

NBNSYS0000002421