Biodiversity & Conservation

A brown seaweed - Fucus distichus

Fucus distichus

Image Keith Hiscock - Fucus distichus on rocky shore. Image width ca 1 m.
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Distribution map

Fucus distichus recorded (dark blue bullet) and expected (light blue bullet) distribution in Britain and Ireland (see below)

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  • UK_BAP
Taxonomy icon Taxonomy Taxon English term
Phylum Ochrophyta Brown and yellow-green seaweeds
Class Phaeophyceae
Authority Linneaus, 1767
Recent synonyms Fucus distichus distichus, Powell, 1957a; Fucus distichus anceps, Powell, 1957a.
Map icon Recorded Distribution in Britain and Ireland Restricted to northern shores of Scotland and north and west Ireland.
Habitat information icon Habitat information Occurs in rock pools and on rock faces in the upper eulittoral at wave exposed locations in Scotland & Ireland.
Text page icon Description A small tufted brown alga. It has narrow fronds without airbladders and short receptacles. The species has a life span of 3 years and grows up to 30 cm long.
Identifying features
  • Narrow frond without airbladders.
  • Caecostomata rare.
  • Receptacles short, typically 18 mm, max. 40 mm.
  • Plants small, typically 10 cm long at maturity (max. 30 cm).
Additional information icon Additional information No text entered

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This review can be cited as follows:

Nicola White 2007. Fucus distichus. A brown seaweed. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. [cited 09/09/2010]. Available from: <http://www.marlin.ac.uk/speciesinformation.php?speciesID=3345>