An annual, or rarely biennial, herb of banks and bare waste land near the sea, and of salted road verges. It is also frequent as a casual of roadsides, rubbish tips, gardens and waste places. Lowland.
L. ruderale is increasingly found as a halophyte along trunk roads, but is apparently less frequent as a casual than it was before the Second World War.
As an archaeophyte L. ruderale has a Eurosiberian Temperate distribution; it is widely naturalised outside this range.
Count of 10km squares in Great Britain: 545
Count of 10km squares in Ireland: 7
Count of 10km squares in the Channel Isles: 4
Atlas Change Index: -0.04
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
1994. 'Maritime' plants of roads in Cambridgeshire (v.c. 29). Nature in Cambridgeshire. 36:37-60.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1996)
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.
1991. Crucifers of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 6.