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
A circumboreal species occurring in N. Europe (southwards to Italy and Greece), Siberia, N. America and Greenland. Widely scattered in British Isles, with records from N. Scotland and W. Ireland to Cornwall and SE. England, but probably under-recorded owing to past confusion with S. scandica (Arnell & H.Buch) Macvicar.
Known from only two sites, in SW33 (Lower Bostraze) and SX05 (near Bugle). Old records from elsewhere are dismissed by Paton (1969).
Habitat & Ecology
A calcifuge, pioneer species that colonises bare ground in old china-clay pits, quarries, sandy woodland rides, on sandstone rocks, peaty soil in a pasture and on detritus by streams (Long in Hill et al ., 1991).
No information. It has not been refound in recent years at the site near Bugle.
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.