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 crustose species found exclusively on 5-10mm wide pebbles or ma\'ebrl fragments where it forms tiny erect reproductive papillae. It is exclusively subtidal at depths of 3-9m and very rare. Largely western in its distribution it is known from the Falmouth and Helford estuaries, the Isles of Scilly, Lleyn Peninsula (North Wales), western Ireland and possibly western Scotland. It is a UK List Priority Species. The recently adopted name of this species is Grateloupia montagnei (P.L. Crouan & H.M. Crouan). R.J.Wilkes, L.M.McIvor & Guiry.
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.