A perennial herb of grassy habitats on well-drained soils, favouring those which are calcareous or otherwise base-rich, but also on acidic sands. It occurs on grazed and ungrazed chalk and limestone downs, in rough pasture and other grassland, in woodland edges and open rides; less frequently on roadsides and rough ground. Generally lowland, but reaching 810 m on Snowdon (Caerns.) and Dollywagon Pike (Westmorland).
There has been no appreciable change in the distribution of P. saxifraga since the 1962 Atlas, where it was mapped as `all records`.
Eurosiberian Temperate element.
Light (Ellenberg): 7
Moisture (Ellenberg): 4
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 3
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.6
July Mean Temperature (Celsius): 15
Annual Precipitation (mm): 968
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.
Atlas text references
1988. Comparative Plant Ecology.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1978. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 2. 2 vols.
1980. Umbellifers of the British Isles. Botanical Society of the British Isles Handbook no. 2.