Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

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.

Gyalecta biformis - a lichen

Range & Status

The only Cornish record for this species is from an old mortared wall at Pendeen Cliff (SW33). A calcicole, with bright orange fruits, which has a distinctly western distribution otherwise being known from Widecombe in the Moor church (Devon) and sites in west Wales (Merioneth) and west Scotland (Dumbarton, Argyll and Westerness). This is only the ninth British record.


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.