A parasitic perennial herb that occurs on crops of peas and beans in cultivated fields and, occasionally, in gardens. Most occurrences persist for one or two years, but the species was naturalised for nine years on Vicia hirsuta and V. tetrasperma in a field corner in S. Essex. Lowland.
O. crenata was first recorded in Britain in 1845 (W. Gloucs.). It was known at one site in S. Essex from 1974 until 1983, when the field was ploughed.
Native of the Mediterranean region and S.W. Asia, eastwards to Iran.
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.