RHODOPHYTA : CERAMIALES : DelesseriaceaeRED ALGAE

Phycodrys rubens (Linnaeus) Batters


Description: Thallus a group of blades up to 20 cms long attached by a single stipe, each blade with a prominent midrib and paired lateral veins. Monostromic laminae with dentate margins which may extend into long fringes.

Habitat: Epilithic and epiphytic in rock pools of the low-littoral into the sublittoral to 30 m. Commonly found epiphytic on the stipes of Laminaria hyperborea.

Distribution: Generally distributed around the British Isles including the Shetlands and the Channel Islands. Europe: Portugal, Spain, France, Denmark, Germany in the Baltic Sea, Sweden, Norway, Faroes, Spitzbergen and Iceland. Greenland. Atlantic coast of North America: Canada, Maine, New Hampshire, Massachusetts, Rhode Island, Connecticut and New Jersey. Further afield: Arctic Sea including the American Arctic Sea and Baffin Bay.

Similar Species: Delesseria sanguinea is similar but easily distinguished from Phycodrys rubens which has a dentate or lobed margin.

Key Identification Features:

Distribution Map from BioMar data for Ireland - Google Earth map:  download this placemark (not got Google Earth installed?)

Distribution Map from NBN: Grid map (fast) : Interactive map (slow, requires login to view records) : National Biodiversity Network mapping facility, data for UK.


 Morton, O. & Picton, B.E., 2010. [In] Encyclopedia of Marine Life of Britain and Ireland
http://www.habitas.org.uk/marinelife/species.asp?item=ZM10120

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