A perennial herb of base-rich marshes and fens, usually in drier and more calcareous habitats than G. palustre, although the two may sometimes be found growing together. 0-750 m (Cross Fell, Cumberland).
G. uliginosum has tended to be over-recorded in the past; in particular all records from N.W. Scotland are treated as doubtful and are not mapped. Some other early records may also be errors for G. palustre. Even allowing for this, analysis of the database reveals a widespread decline in this species since 1950. It was mapped as `all records` in the 1962 Atlas.
Eurasian Boreo-temperate element.
Light (Ellenberg): 7
Moisture (Ellenberg): 9
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 4
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.2
July Mean Temperature (Celsius): 14.9
Annual Precipitation (mm): 961
Height (cm): 60
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 1435
Count of 10km squares in Ireland: 102
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: -0.14
Weighted Changed Factor: -3
Weighted Change Factor Confidence (90%)
Atlas text references
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1992. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.
1994. Floristic change in English grazing marshes: the impact of 150 years of drainage and land-use change. Watsonia. 20:3-24.
1996. Changes in the vascular plant floras of England and Scotland between 1930-1960 and 1987-1988: the BSBI monitoring scheme. Biological Conservation. 75:217-229.