The descriptive text, below the map, is from the Cornish Red Data Book (2009). The map on this web page depicts the organisms distribution and shows the records made pre-2000 and those made since.
Native: a Submediterranean-Subatlantic species of the chalk areas of south and east England.
It is extinct in Cornwall. It was noted in the past as a casual near Charlestown and from a very limited area around the Camel Estuary. However, doubt has been cast on recent records (Rich, 1994).
Habitat and Ecology
Occurring in open disturbed habitats and an arable weed of sandy fields.
Since 1960 the number of known localities in Britain has dropped. The cause for this decline is unknown.
Listed (middle list) as a globally threatened/declining species (BSGR, 1995).
I.J. Bennallick, S. Board, C.N. French, P.A. Gainey, C. Neil, R. Parslow, A. Spalding and P.E. Tompsett. eds. 2009. Red Data Book for Cornwall and the Isles of Scilly. 2nd Edition.Croceago Press.
The Cornish Red Data Book Project was led by the Cornwall and Isles of Scilly Federation for Biological Recorders (CISFBR). The full text and species accounts (minus the maps) are available on the CISFBR website.