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
Very rare, it is found on bark, usually of Elder Sambucus nigra or on young Elm Ulmus spp. It is recorded on the Isles of Scilly, Lundy Island, South Devon, Ireland and Portugal. More recently (2001) it was reported as new to mainland Cornwall from six metalliferous mine sites, where it occurs on trees in patches of scrub as a twig epiphyte of Elder, Sallow Salix spp. and Common Gorse Ulex europaeus .
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.