An annual of open, often moist, ground, generally found in woodland but also in shaded hedge banks, and rarely in unshaded places such as on walls and railway banks. It favours slightly acidic substrates, and there is a slight preference for warmer slopes in woodland, which hastens the successful completion of the plant`s life-cycle. 0-425 m (Mallowdale Fell, W. Lancs.).
There appears no significant change since the 1962 Atlas, where it was mapped as `all records`.
European Temperate element; also in E. Asia.
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.
Jalas & Suominen (1983)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.