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
Found on stones and shells in mud in extremely sheltered conditions, but which are
exposed to tidal streams. This alga has been found at only a few sites in the British Isles, the first record being from the Falmouth estuary in 1977 and since then from the Helford estuary. Other records come from Chesil Beach (the Fleet) and Weymouth in Dorset, also from Milford Haven in south-west Wales. This is an alien species.
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.