Anthemis cotula
Ecology
A foetid annual of cereals and other arable crops. In some areas it favours heavy soils, including clay, clay-loam and marl, being replaced by A. arvensis on lighter soils, but it can grow on light soils, including those over chalk. Lowland.
Status
Trends
A. cotula has probably been a serious weed of crops since the Iron Age. Although fairly resistant to the first phenoxy herbicides, it has been much reduced by more recent ones. It has declined in many areas since the 1962 Atlas. It is a grain-seed casual in Ireland.
World Distribution
As an archaeophyte A. cotula has a European Southern-temperate distribution; it is widely naturalised outside this range.
Broad Habitats
Light (Ellenberg): 7
Moisture (Ellenberg): 5
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 6
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.8
July Mean Temperature (Celsius): 15.7
Annual Precipitation (mm): 809
Height (cm): 60
Perennation - primary
Life Form - primary
Woodiness
Clonality - primary
Count of 10km squares in Great Britain: 1103
Count of 10km squares in Ireland: 49
Count of 10km squares in the Channel Isles: 6
Atlas Change Index: -1.6
Weighted Changed Factor: -31
Weighted Change Factor Confidence (90%)
JNCC Designations
Atlas text references
Atlas (282b)
.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Kay (1971a)
.
1992. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.