Factsheets for Brown Seaweeds (phylum Phaeophyta)

Genus: Egregia Trade name: egregia Symbol: EG
AuthorityAreschoug Type species: n/a
Commercial species:  menziesii (MEN)
Common names: Boa kelp, Feather boa, Feather-boa kelp, Ribbon-kelp  
Classification: Eukaryota, Phylum Heterokontophyta, Order Laminariales, Family Alariaceae. 
AlgaeBase names and species:  2 names - 2 current as of 12-2001.
Comprehensive lists of common names , generic & specific names can be found at AlgaeBase. >>Click here<<  for SuriaLink's policy on names.
SuriaLink SeaPlant Utility Rating
Alginate source - source of fucoidan - wild harvest.
Careful management of harvest required to prevent habitat damage.
Egregia plants comprise a holdfast, stipe and a varying number of fronds. Thalli include a tough, flattened rachis that is covered by lateral fronds and pneumatocysts. At the end of the rachis, following a frond-free meristematic region, is a terminal lamina, which is also flattened but wider and not as tough as the rachis. Plants can grow to a height of up to almost 8 meters. The holdfast is formed of several haptera, can be up to 20 cm. in diameter and is usually not disc-shaped.
Egregia species are generally lower intertidal to subtidal kelps. They grow on rocks between about 6 metres and the mean low tide level mainly in environments with heavy wave action.

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Egregia production
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Tons per annum
wild harvest
Tons per annum
Canada n/a 0


n/a 0
Production figures are being sought
Biology & Agronomy
wild harvest.
Contains alginates and fucoidan.
We have several monographs in progress covering analytical procedures post-harvest treatment and process technology. Check the processing index for available web pages and monographs. 
Products, Uses & Applications
A source of alginates and fucoidan; an anticoagulant. Also can be used as a sea vegetable ad as an animal feed component.
List of species' uses and community affiliations
Genus GenID SpID Species Uses Communities
Egregia EG MEN menziesii FH SV

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Egregia is most strongly associated with the Seavegetables community.
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