This species has been recorded in Britain only in a calcareous mire at Lansdown near Bath (N. Somerset). Lowland.
C. davalliana is extinct. It was discovered before 1809, but Babington (1834) noted that it `has not been found for some years`. The site was drained and subsequently built on, and there was no trace of the plant in 1852.
European Temperate element, with a continental distribution in W. Europe.
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Light (Ellenberg): 9
Moisture (Ellenberg): 9
Reaction (Ellenberg): 8
Nitrogen (Ellenberg): 2
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 4
July Mean Temperature (Celsius): 16.3
Annual Precipitation (mm): 833
Height (cm): 25
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 1
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 0
Plantatt Conservation Status
Atlas text references
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1982. Sedges of the British Isles. Botanical Society of the British Isles Handbook no. 1, edn 2.
1999. Britain's rare flowers.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1912. The Flora of Bristol.