Carex rostrata
Tracheophyta
›Magnoliopsida›Cyperaceae›Carex›Carex rostrata
Ecology
A rhizomatous perennial herb found in emergent stands on the edges of lakes and ponds, rivers and streams, in ditches, swamps, fens and bog pools, wet meadows, flush-bogs on hillsides, sea-cliff flushes, wet dune-slacks, and Alder and Salix carr. It usually grows in oligotrophic or mesotrophic, acidic waters, though it also occurs in nutrient-poor calcareous conditions. 0?1040 m (Creag Meagaidh, Westerness).
Status
Native
Trends
The distribution of C. rostrata is stable except in S.E. England. Here, it had been lost from some sites before 1930 and further losses have occurred because of drainage and habitat reclamation.
World Distribution
Circumpolar Boreo-temperate element.
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Broad Habitats
Fen, marsh and swamp (not wooded)
Light (Ellenberg): 8
Moisture (Ellenberg): 10
Reaction (Ellenberg): 4
Nitrogen (Ellenberg): 2
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.3
July Mean Temperature (Celsius): 14
Annual Precipitation (mm): 1193
Height (cm): 100
Perennation - primary
Perennial
Life Form - primary
Perennial hydrophyte (perennial water plant)
Life Form - secondary
Hemicryptophyte
Woodiness
Herbaceous
Clonality - primary
Rhizome far-creeping
Count of 10km squares in Great Britain: 1924
Count of 10km squares in Ireland: 731
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: -0.19
Weighted Changed Factor: 3
Weighted Change Factor Confidence (90%)
16
JNCC Designations
NBNSYS0000002426