Carex dioica

Tracheophyta MagnoliopsidaCyperaceaeCarexCarex dioica

Ecology

A shortly rhizomatous perennial herb of very wet, neutral to base-rich mires. It grows particularly well in silty, calcareous mud and by the edges of lime-rich flushes and springs. Although it occurs at sea level, many sites are at moderate or high altitudes, ascending to about 1000 m on Ben Lawers (Mid Perth).

Status

Native

World Distribution

Circumpolar Boreo-arctic Montane element.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 9

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 2

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 2.7

July Mean Temperature (Celsius): 13.2

Annual Precipitation (mm): 1404

Height (cm): 30

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Rhizome shortly creeping

Count of 10km squares in Great Britain: 1100

Count of 10km squares in Ireland: 204

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.35

Weighted Changed Factor: 17

Weighted Change Factor Confidence (90%)

18

JNCC Designations

NHMSYS0000456843