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.

Usnea madeirensis - a lichen

Range & Status

This shrubby or hanging yellow-green fruticose species is found on deciduous trees and shrubs in windy situations, Very rare, only known in Britain from west Cornwall, south Devon and west Scotland (Kintyre). Elsewhere it is known from south-west Europe and Macronesia. The Cornish site is within a SSSI. The recent localities should be re-visited to assess the size of the populations and identify any potential threats.


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.