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
Occurs on somewhat basic rocks e.g. basalt and mica-schist in upland areas often in seepage tracks and spasmodically wet situations. A rare but widespread species which occurs in Cornwall only on the serpentine at Gew Graze on the Lizard Peninsula. Elsewhere central and northern Scotland (Argyll, Mid-Perth and Westerness), Sweden and Czechoslovakia.
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.