Rumex crispus x obtusifolius (R. x pratensis)
This common hybrid dock is found in fields and waste places, in pastures, by roadsides, on river banks and on other disturbed ground, sometimes in the absence of either parent. It is more vigorous than either parent, and often occurs as a high proportion of a dock population. It is, however, much less fertile than the parents. Generally lowland, but upper altitudinal limit unknown.
This hybrid was not mapped in the 1962 Atlas, and is under-recorded, especially in Ireland. Areas of concentrated records indicate the activities of botanists familiar with the hybrid.
The commonest Rumex hybrid in Europe.
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.