An annual or short-lived perennial herb, found mainly as a casual of waste ground, but now becoming naturalised in a variety of habitats where it is sometimes invasive, such as in open grassland. It is introduced with grain and bird-seed. Lowland.
R. rugosum was introduced to cultivation in Britain by 1739, and was known from the wild by at least 1863. Its range has increased since the 1962 Atlas.
Native of the Mediterranean region and S.W. Asia; widely naturalised in temperate Europe and in the S. hemisphere.
Atlas Change Index: 0.19
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
Jalas & Suominen (1996)
Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols,
, Jena, (1965)
Crucifers of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 6,
, London, (1991)