An annual or, rarely, biennial herb introduced with grain, bird-seed, lucerne or sainfoin seed, or wool and found most frequently in arable fields and on waste ground. Lowland.
C. solstitialis was known from the wild by at least 1778, and formerly persisted in lucerne and sainfoin fields. Dunn (1905) described it as `of frequent occurrence in Southern England`, but it is much less common than it was before 1930, and now only known as a casual.
Native of S. Europe and S.W. Asia; widely naturalised elsewhere.
Atlas Change Index: -5.62
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.