Cirsium palustre
Tracheophyta
›Magnoliopsida›Asteraceae›Cirsium›Cirsium palustre
Ecology
A monocarpic perennial herb of mires, fens, marshes, damp grassland, rush-pastures, wet woodland, montane springs and flushes, and tall-herb vegetation on mountain ledges. It reproduces by seed, which may persist for many years, as, for example, during the dark phase of a coppice cycle. 0-760 m (Cross Fell, Cumberland), and 845 m on Great Dun Fell (Westmorland).
Status
Native
Trends
There has been no overall change in the distribution of C. palustre since the 1962 Atlas.
World Distribution
Eurosiberian Boreo-temperate element; widely naturalised outside its native range.
© P. Shannon
Woodhead, vc58
© P. Shannon
Broad Habitats
Light (Ellenberg): 7
Moisture (Ellenberg): 8
Reaction (Ellenberg): 5
Nitrogen (Ellenberg): 4
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.5
July Mean Temperature (Celsius): 14.5
Annual Precipitation (mm): 1105
Height (cm): 175
Perennation - primary
Biennial, including monocarpic perennials
Life Form - primary
Hemicryptophyte
Woodiness
Herbaceous
Clonality - primary
Little or no vegetative spread
Count of 10km squares in Great Britain: 2697
Count of 10km squares in Ireland: 955
Count of 10km squares in the Channel Isles: 12
Atlas Change Index: 0.15
Weighted Changed Factor: -28
Weighted Change Factor Confidence (90%)
14
JNCC Designations
NBNSYS0000004491