Juncus conglomeratus

Tracheophyta MagnoliopsidaJuncaceaeJuncusJuncus conglomeratus

Ecology

J. conglomeratus tends to occur in slightly drier habitats than J. effusus, avoiding the wetter places and the more acidic soils, being characteristic of damp fields, ditches, open woodland and margins of still or running water. 0-840 (Breadalbanes, Mid Perth), and 845 m on Great Dun Fell (Westmorland).

Status

Native

World Distribution

European Temperate element; widely naturalised outside its native range.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 7

Moisture (Ellenberg): 7

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 3

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.5

July Mean Temperature (Celsius): 14.4

Annual Precipitation (mm): 1117

Height (cm): 100

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Tussock-forming graminoid, may slowly spread

Count of 10km squares in Great Britain: 2622

Count of 10km squares in Ireland: 798

Count of 10km squares in the Channel Isles: 4

Atlas Change Index: 0.84

Weighted Changed Factor: -1

Weighted Change Factor Confidence (90%)

24

JNCC Designations

NBNSYS0000002222