A densely tufted perennial herb occurring on peaty moors and bogs over acidic soils, persisting even in burnt and heavily deer-grazed areas. It is also local on open ground on wet lowland heaths in S. & E. England, where it often avoids the wettest sites and favours grazed, burnt and trampled areas. 0-1190 m (above Caenlochan, Angus).
The decline of T. cespitosum in S. & E. England was already apparent in the 1962 Atlas, and has continued, but the distribution appears to be stable elsewhere. Two subspecies and their hybrid occur in our area; subsp. germanicum is found throughout the range of the species, subsp. cespitosum is mapped separately.
Circumpolar Boreal-montane element.
Light (Ellenberg): 8
Moisture (Ellenberg): 8
Reaction (Ellenberg): 2
Nitrogen (Ellenberg): 1
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.2
July Mean Temperature (Celsius): 13.7
Annual Precipitation (mm): 1312
Height (cm): 35
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 1553
Count of 10km squares in Ireland: 629
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: -0.31
Weighted Changed Factor: -17
Weighted Change Factor Confidence (90%)
Atlas text references
Hollingsworth & [/ibib]6131[/ibib]
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1999. Identification, distribution and a new nothosubspecies of Trichophorum cespitosum (L.) Hartman (Cyperaceae) in the British Isles and N. W. Europe. Watsonia. 22:209-233.