A deciduous shrub of hedges, woodland borders and rides, scrub, dry grassland and semi-stable dunes, mainly on basic soils; also in fen carr. 0-320 m (Alston, Cumberland).
In the past R. caesius has been much confused with forms of R. fruticosus (series Corylifolii), which are sometimes regarded as having originated from hybrids between R. caesius and other microspecies of the R. fruticosus aggregate. The distribution was mapped as `all records` in the 1962 Atlas. There seem to have been declines in the north and west of its range, and in Ireland.
Eurosiberian Temperate element; widely naturalised outside its native range.
Light (Ellenberg): 7
Moisture (Ellenberg): 7
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 6
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.8
July Mean Temperature (Celsius): 15.6
Annual Precipitation (mm): 851
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.