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 rare, south-western species which until the 1980s was only known in the British Isles in 20m depth of water off the Isle of Man; otherwise only known from the Mediterranean. In 1981, this small alga was found at one site off the north-east Cornish coastline during a south-west Britain Sublittoral Survey (Maggs & Hiscock, 1979). The plant was relatively abundant on gravel at a depth of 20m.
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.