''Thorea'' is a genus of

fresh water Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salt (chemistry), salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include ...

algae in the division Rhodophyta (

red algae Red algae, or Rhodophyta (, ; ), make up one of the oldest groups of eukaryotic algae. The Rhodophyta comprises one of the largest Phylum, phyla of algae, containing over 7,000 recognized species within over 900 Genus, genera amidst ongoing taxon ...

). ''Thorea'' is a small alga with filaments up to 200 cm long, dark green in colour and not red as are marine Rhodophyta. The filaments have only as few secondary branches. ''Thorea'' is distributed throughout temperate and tropical regions. The genus was circumscribed by Jean Baptiste Bory de Saint-Vincent in Ann. Mus. Natl. Hist. Nat. vol.12 on page 126 in 1808. The genus name of ''Thorea'' is in honour of Jean Thore (1762–1823), who was a French botanist and physician who practiced medicine in the town of

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Species

As accepted by

WoRMS The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...

; *'' Thorea bachmannii'' *'' Thorea brodensis'' *'' Thorea clavata'' *'' Thorea conturba'' *'' Thorea flagelliformis'' *'' Thorea gaudichaudii'' *'' Thorea hispida'' *'' Thorea okadae'' *'' Thorea okaidai'' *'' Thorea prowsei'' *'' Thorea riekei'' *'' Thorea siamensis'' *'' Thorea violacea'' *'' Thorea zollingeri'' Former species; *''Thorea andina'' accepted as ''Thorea hispida'' (synonym) *''Thorea chilensis'' accepted as '' Myriogloea chilensis'' (synonym) *''Thorea lehmannii'' accepted as ''Thorea hispida'' (synonym) *''Thorea ramosissima'' accepted as ''Thorea hispida'' (synonym)

''Thorea'' in UK

There is only one species of ''Thorea'' in the

British Isles The British Isles are an archipelago in the Atlantic Ocean, North Atlantic Ocean off the north-western coast of continental Europe, consisting of the islands of Great Britain, Ireland, the Isle of Man, the Inner Hebrides, Inner and Outer Hebr ...

: ''Thorea hispida'' (Synonyms: ''Thorea anadina'' , ''T. lehmannii'' and ''T. ramosissima'' ). The first record of ''Thorea ramosissima'' in the British Isles is in Harvey's Manual (1841): ''Found in a pool in a bog in the

County Donegal County Donegal ( ; ) is a Counties of Ireland, county of the Republic of Ireland. It is in the Provinces of Ireland, province of Ulster and is the northernmost county of Ireland. The county mostly borders Northern Ireland, sharing only a small b ...

Mountains, going from Letterkenny to Dunfanaghy; July''. These specimens are in the

Ulster Museum The Ulster Museum, located in the Botanic Gardens in Belfast, has around 8,000 square metres (90,000 sq. ft.) of public display space, featuring material from the collections of fine art and applied art, archaeology, ethnography, treasures ...

(BEL: F42–F47), but proved to have been incorrectly identified and were specimens of '' Batrachospermum''.

References

{{Taxonbar, from=Q7796197 Red algae genera Florideophyceae