Lepidium draba (Hoary Cress)
A perennial rhizomatous herb of roadsides, and on dry limestone or clinker ballast of railways. It also grows on waste ground, in arable fields on light soils, on sand dunes and other sandy ground, particularly near the sea, and in the uppermost zone of saltmarshes. Lowland.
Accidentally introduced to Swansea (Glamorgan) in 1802, and subsequently to other ports, L. draba spread rapidly in the 19th century, particularly in urban and industrial areas. Its range has expanded in Britain since the 1962 Atlas, but not in Ireland.
Native of S. Europe and S.W. Asia; naturalised throughout temperate W. Europe, N. America and the S. hemisphere.
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.