Claytonia sibirica
Ecology
An annual to perennial herb of damp, bare sites, often found in open woodlands or hedgerows, or by shaded streams from where it may be washed downstream to new sites. Predominately lowland, but reaching 425 m at Dockray (Cumberland).
Status
Trends
C. sibirica was cultivated in Britain by 1768 and was first noted in the wild in 1838. It has spread rapidly since 1930; in Cornwall, for example, it was not recorded until the 1930s but is now known in almost every 10-km square. It can quickly colonise woodland, suppressing other vegetation by its lush mass of spring foliage which then flops over nearby plants.
World Distribution
Native of eastern Asia and western N. America; widely naturalised in N.W. Europe.
Broad Habitats
Light (Ellenberg): 5
Moisture (Ellenberg): 7
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 6
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.2
July Mean Temperature (Celsius): 14.4
Annual Precipitation (mm): 1092
Height (cm): 40
Perennation - primary
Perennation - secondary
Life Form - primary
Life Form - secondary
Woodiness
Clonality - primary
Count of 10km squares in Great Britain: 1166
Count of 10km squares in Ireland: 25
Count of 10km squares in the Channel Isles: 6
Atlas Change Index: 1.28
Weighted Changed Factor: 14
Weighted Change Factor Confidence (90%)
JNCC Designations
Atlas text references
Atlas (80c)
.
1999. Flora of Cornwall.
.
1968. Flora of Alaska and neighboring territories.
Jalas & Suominen (1980)
Comment on Life Form