An annual of sandy, gravelly and rocky places, commonly on thin acidic soils around rock outcrops, on walls, cliff-tops, heaths and sand dunes. It is rarely recorded as a wool casual. Generally lowland, but reaching 685 m on Mangerton Mountain (S. Kerry).
A. praecox was mapped as `all records` in the 1962 Atlas. It seems to have declined in C. Ireland and England, but not to the extent of A. caryophyllea.
Suboceanic Southern-temperate element; widely naturalised outside its native range.
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.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1990. The BSBI Monitoring Scheme, 1987-1988. 2 vols. Nature Conservancy Council Report no. 1265.