Cornish Biodiversity Network  -  Supporting Wildlife Recording

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Cornish Red Data (2009)

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.

Porphyra drachii - Kelp Laver

Range & Status

The foliose phase is epiphytic on the frond tips of the brown seaweed Laminaria hyperborea and epizoic on a variety of hydroids in the shallow subtidal to about 12m depth. The full range is not yet known but there are confirmed records from Cornwall, Pembrokeshire and possibly Argyll and Shetland. An under-recorded, data deficient and possibly 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.