Factsheets for Red Seaweeds (phylum Rhodophyta)

Genus: Hypnea Trade name: hypnea Symbol: HY
AuthorityJ.V. Lamouroux Type species: Hypnea musciformis (Wulfen) J.V. Lamouroux 
Commercial species: musciformis (MUS), muscoides (MUC), nidifica (NID), pannosa (PAN), valentiae (VAL) & spp.
Common names: Hypnean
Classification: Eukaryota, Phylum Rhodophyta, Class Rhodophyceae, Subclass Florideophycidae, Order Gigartinales, Family Hypneaceae. 
AlgaeBase names and species:  90 names - 44 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
Minor wild & aquaculture crop used for food & galactans
Harvesting & cultivation methods must use good  environmental practices.
Thallus comprises numerous fine stipes with feathery branches. Apices of some species (e.g. H. musciformis) have hooks that can attach to substrate in a manner similar to that of tendrils on vines. Colour ranges from light brown to dark red. Usually about 10-30 cm long but may exceed 50 cm.
Generally attaches subtidally to coral, stones or shells on sheltered tropical reef flats. Can also be cultivated on ropes suspended in the sea. Some species are common epiphytes of algae such as Sargassum.

Hypnea production
click country to go to GIS
Tons per annum
wild harvest
Tons per annum
Bangladesh n/a n/a
Burma n/a n/a
Brazil n/a n/a
India n/a n/a
Philippines n/a n/a
Senegal 20 n/a
USA n/a n/a
Vietnam n/a n/a


20 n/a
Hypnea has been irregularly harvested as a source for carrageenan (similar to Kappaphycus carrageenan in characteristics) but does not seem to have established a regular market. It has been cultivated successfully (e.g. in India) and has been harvested as beach-drift in Senegal in quantities on the order of 100 tons/annum.
Biology & Agronomy
In preparation.
In preparation.
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
List of species' uses and community affiliations
Genus GenID SpID Species Uses Communities
Hypnea HY MUS musciformis FH, FI BP, SV
Hypnea HY MUC muscoides FH, FI BP, SV
Hypnea HY NID nidifica FH, FI BP, SV
Hypnea HY PAN pannosa FH, FI BP, SV
Hypnea HY SPP spp. FH, FI BP, SV
Hypnea HY VAL valentiae FH, FI BP, SV

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Hypnea is most strongly associated with the Biopolymer,  and   Seavegetables communities.
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