An annual of nutrient-rich mud around the dried-up margins of freshwater or brackish ponds and ditches trampled by livestock; also, more widely, in cultivated and waste ground, on manure heaps and farm tracks and in field gateways. Lowland.
There has been a marked increase in the distribution of this mobile species since the 1962 Atlas, particularly in East Anglia, C.S. England, S.W. Scotland and Ireland.
Eurosiberian Temperate element; also present as a native in western N. America and widely naturalised so that the distribution is now Circumpolar Temperate.
Light (Ellenberg): 7
Moisture (Ellenberg): 7
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 8
Salt Tolerance (Ellenberg): 1
January Mean Temperature (Celsius): 3.8
July Mean Temperature (Celsius): 15.7
Annual Precipitation (mm): 800
Height (cm): 70
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 1267
Count of 10km squares in Ireland: 142
Count of 10km squares in the Channel Isles: 8
Atlas Change Index: 1
Weighted Changed Factor: 27
Weighted Change Factor Confidence (90%)
Atlas text references
1988. Comparative Plant Ecology.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1980)
1969. Biological Flora of the British Isles. No. 117. Chenopodiunn rubrum L. Journal of Ecology. 57:831-841.