A perennial herb growing on damp bare ground, often in sites flooded in winter, on the margins and banks of rivers, streams, canals and ditches, by lakes and ponds and in depressions in pastures. It is also a weed of cultivated ground, often in drier situations than in its semi-natural habitats. It is a vigorous pioneer species, intolerant of competition, spreading by seed and by broken pieces of rhizome. Lowland.
The distribution of R. sylvestris is probably stable in semi-natural habitats, but it has become more widespread as a weed since the 1950s. It is now recorded in many more squares than in the 1962 Atlas.
European 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
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1994)
1968. Studies in the north-west European species of Rorippa s. str. Symbolae Botanicae Upsaliensis. 19(2):1-222.
1991. Crucifers of Great Britain and Ireland. Botanical Society of the British Isles Handbook no. 6.