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.
Range & Status
Strictly coastal in southern Britain, occurring from North Wales round to Essex.
Relatively common along the warmer south coast. On the north coast, there is a
large population at Penhale dunes, reaching 1km inland, but elsewhere uncommon in small colonies. On the Isles of Scilly, there is a long known colony on Bryher, but not elsewhere.
Habitat & Ecology
Coarse grasses and rough vegetation on dunes and sea cliffs.
Many cliff colonies are in warm pockets of difficult to reach vegetation, so are relatively safe from the effects of human intrusion.
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.