A rhizomatous perennial of hedge banks, road verges, rough scrubby grassland and rocky outcrops, usually on dry calcareous soils. It may occur as a relic of cultivation. Generally lowland, but reaching 380 m at Conistone (Mid-W. Yorks.).
Some sites for C. ascendens were lost before 1930, particularly in the north of its range. There have been further losses since the 1962 Atlas, the reasons for which include the lack of scrub control in its grassland habitats, and changes in road verge management. However, it is now much better recorded in some areas, particularly East Anglia and Somerset.
European Temperate element.
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