Porphyra purpurea is a species of red algae in the order Bangiales.
Description This red alga consists of a single membranous layer of cells forming a blade attached by a disk holdfast. It grows to a length of 20 to 50 cm long.Smith, G.M. 1955. Cryptogamic Botany. Volume 1 Algae and Fungi. Second Edition. p. 298. McGraw-Hill Book Company, IncNewton, L. 10931. A Handbook of the British Seaweeds. London, British Museum The blade has the texture of a thin polythene sheet.Jones, W.E. 1962. A Key to the genera of British seaweeds. Field Studies. Volume 1 (4) pp. 1 - 32
Habitat They are littoral, growing on rock, pebbles, limpets and barnacles.Hardy, F.G. and Guiry, M.D. 2003. A Checklist and Atlas of the Seaweeds of Britain and Ireland. British Psychological Society
Distribution Recorded from Canada and Europe.Morton, O. 2003.no 27. The marine macroalgae of County Donegal, Ireland. Bulletin of Irish biogeographical Society Common in Great Britain, Ireland and Isle of Man.
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