Carex diandra

Tracheophyta MagnoliopsidaCyperaceaeCarexCarex diandra

Ecology

A perennial herb of wet, peaty areas, tolerating both acidic soils and those flushed by calcareous springs. It is often found on the margins of pools and in swamps, though it can also thrive on the edges of wet woods, among scattered trees or in fen-carr. Generally lowland, but reaching 370 m near Malham Tarn (Mid-W. Yorks.).

Status

Native

World Distribution

Circumpolar Boreo-temperate element.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 9

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 3

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.4

Annual Precipitation (mm): 1042

Height (cm): 60

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Rhizome shortly creeping

Count of 10km squares in Great Britain: 378

Count of 10km squares in Ireland: 294

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 0.22

JNCC Designations

NBNSYS0000002466