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 small species with branched polysiphonous axes. Intertidal on sandy or muddy shores where it is found on the bedrock, pebbles and holdfasts of Bladder wrack Fucus vesiculosus on shaded rock faces in the intertidal zone, also in muddier places about extreme low water, at sheltered to extremely sheltered sites. Extremely rare in Britain and believed to be restricted to the south and south-western coasts of England (Cornwall, Devon and Dorset) and Ireland.
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.