RHODOPHYTA : NEMALIALES : LiagoraceaeRED ALGAE

Nemalion helminthoides (Velley) Batters


Nemalion helminthoides

Description: Growing from a small basal disc to a length of 10 to 20 cms generally branching only a few times. Reddish brown in colour and very mucilaginous in texture.

Habitat: Common. Epilithic in rock pools.

Distribution: Widespread around the British Isles except in south-eastern England. Europe: Medirerranean, Azores, Portugal, Spain, Netherlands and Norway. Atlantic coast of North America: Canada to Connecticut and Long Island. Further afield: the Canary Islands.

Similar Species: Helminthocladia calvadosa and Helminthora divaricata from which it is distinguished by having few side branches which are not markedly narrower than the main axis.

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=ZM1770

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