An annual found as a casual or naturalised in rough grassland and on waste ground, arising from bird-seed, wool shoddy or as a grain contaminant. Generally lowland, but reaching 320 m at Brassington (Derbys.).
T. aureum was introduced in 1815, and first recorded in the wild in 1838. It has declined as a casual, possibly through improved seed cleaning techniques and the less frequent use of wool shoddy.
A European Temperate species, absent as a native from much of W. Europe; naturalised in N. America and elsewhere.
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.