WoRMS taxon details
Ulothrix flacca (Dillwyn) Thuret, 1863
145925 (urn:lsid:marinespecies.org:taxname:145925)
accepted
Species
Conferva flacca Dillwyn, 1805 · unaccepted (synonym)
Hormotrichum fasciculare Kützing · unaccepted (synonym)
Lyngbya carmichaelii Harvey, 1833 · unaccepted
Lyngbya flacca (Dillwyn) Harvey, 1849 · unaccepted (synonym)
Ulothrix consociata Wille, 1901 · unaccepted (synonym)
Ulothrix consociata var. islandica Jónsson, 1903 · unaccepted (synonym)
Ulothrix islandica (H.Jónsson) Printz, 1926 · unaccepted (synonym)
Ulothrix pseudoflacca Wille, 1901 · unaccepted
Ulothrix scutata H.Jónsson, 1904 · unaccepted (synonym)
- Variety Ulothrix flacca var. roscoffensis Berger-Perrot, 1980
- Variety Ulothrix flacca var. geniculata Berger-Perrot, 1980 (uncertain)
marine, fresh
(of Conferva flacca Dillwyn, 1805) Dillwyn, L. W. (1809). British Confervæ; or, colored figures and descriptions of the British plants referred by botanists to the genus Conferva. pp. 1-87, 1-6 (Index and Errata), Plates 69, 100-109, A-G (with text)., available online at https://www.biodiversitylibrary.org/page/2213475
page(s): 298-302 [details]
page(s): 298-302 [details]
LSID urn:lsid:algaebase.org:taxname:77308
Distribution Long Island Sound to Strait of Belle Isle
LSID urn:lsid:algaebase.org:taxname:77308 [details]
Distribution Long Island Sound to Strait of Belle Isle
Distribution Long Island Sound to Strait of Belle Isle [details]
Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. World-wide electronic publication, National University of Ireland, Galway (taxonomic information republished from AlgaeBase with permission of M.D. Guiry). Ulothrix flacca (Dillwyn) Thuret, 1863. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=145925 on 2025-04-07
Copyright notice: the information originating from AlgaeBase may not be downloaded or replicated by any means, without the written permission of the copyright owner (generally AlgaeBase). Fair usage of data in scientific publications is permitted.
Nomenclature
original description
(of Conferva flacca Dillwyn, 1805) Dillwyn, L. W. (1809). British Confervæ; or, colored figures and descriptions of the British plants referred by botanists to the genus Conferva. pp. 1-87, 1-6 (Index and Errata), Plates 69, 100-109, A-G (with text)., available online at https://www.biodiversitylibrary.org/page/2213475
page(s): 298-302 [details]
basis of record Guiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 20-38 (look up in IMIS) [details]
page(s): 298-302 [details]
basis of record Guiry, M.D. (2001). Macroalgae of Rhodophycota, Phaeophycota, Chlorophycota, and two genera of Xanthophycota, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 20-38 (look up in IMIS) [details]
Other
context source (HKRMS)
Choy, S. Y. (1979). Distribution of marine algae in Hong Kong, with special reference to seasonal and spatial changes. <em>Mphil thesis. The University of Hong Kong.</em> [details]
context source (RAS) Australian Antarctic Data Centre. , available online at https://data.aad.gov.au/aadc/biodiversity/ [details]
additional source Linkletter, L. E. (1977). A checklist of marine fauna and flora of the Bay of Fundy. <em>Huntsman Marine Laboratory, St. Andrews, N.B.</em> 68: p. [details]
additional source Sears, J.R. (ed.). 1998. NEAS keys to the benthic marine algae of the northeastern coast of North America from Long Island Sound to the Strait of Belle Isle. Northeast Algal Society. 163 p. [details]
additional source South, G. R.;Tittley, I. (1986). A checklist and distributional index of the benthic marine algae of the North Atlantic Ocean. <em>untsman Marine Laboratory. St. Andrews, New Brunswick.</em> 1-76. [details]
additional source Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. <em>Commission Régionale de Biologie Région Nord Pas-de-Calais: France.</em> 307 pp., available online at http://www.vliz.be/imisdocs/publications/145561.pdf [details]
additional source Fredericq, S., T. O. Cho, S. A. Earle, C. F. Gurgel, D. M. Krayesky, L. E. Mateo-Cid, A. C. Mendoza-González, J. N. Norris, and A. M. Suárez. 2009. Seaweeds of the Gulf of Mexico, Pp. 187–259 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. I. Biodiversity, pp. 187-259. Texas A&M Univ. Press. [details]
additional source Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors
[request]
additional source Silva, P. C.; Basson, P. W.; Moe, R. L. (1996). Catalogue of the benthic marine algae of the Indian Ocean. <em>University of California Publications in Botany.</em> 79: 1-1259., available online at https://books.google.be/books?hl=pt-PT&lr=&id=vtBdDwAAQBAJ&oi=fnd&pg=PR11&dq=Catalogue+of+the+benthic+marine+algae+of+the+Indian+Ocean&ots=FL-YOKu8Cx&sig=3PmT926F1rNHQTf1AhDeY-ztmu4#v=onepage&q=Catalogue%20of%20the%20benthic%20marine%20algae%20of%20the%20 [details]
additional source Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
context source (RAS) Australian Antarctic Data Centre. , available online at https://data.aad.gov.au/aadc/biodiversity/ [details]
additional source Linkletter, L. E. (1977). A checklist of marine fauna and flora of the Bay of Fundy. <em>Huntsman Marine Laboratory, St. Andrews, N.B.</em> 68: p. [details]
additional source Sears, J.R. (ed.). 1998. NEAS keys to the benthic marine algae of the northeastern coast of North America from Long Island Sound to the Strait of Belle Isle. Northeast Algal Society. 163 p. [details]
additional source South, G. R.;Tittley, I. (1986). A checklist and distributional index of the benthic marine algae of the North Atlantic Ocean. <em>untsman Marine Laboratory. St. Andrews, New Brunswick.</em> 1-76. [details]
additional source Muller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. <em>Commission Régionale de Biologie Région Nord Pas-de-Calais: France.</em> 307 pp., available online at http://www.vliz.be/imisdocs/publications/145561.pdf [details]
additional source Fredericq, S., T. O. Cho, S. A. Earle, C. F. Gurgel, D. M. Krayesky, L. E. Mateo-Cid, A. C. Mendoza-González, J. N. Norris, and A. M. Suárez. 2009. Seaweeds of the Gulf of Mexico, Pp. 187–259 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. I. Biodiversity, pp. 187-259. Texas A&M Univ. Press. [details]
additional source Liu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors
[request]additional source Silva, P. C.; Basson, P. W.; Moe, R. L. (1996). Catalogue of the benthic marine algae of the Indian Ocean. <em>University of California Publications in Botany.</em> 79: 1-1259., available online at https://books.google.be/books?hl=pt-PT&lr=&id=vtBdDwAAQBAJ&oi=fnd&pg=PR11&dq=Catalogue+of+the+benthic+marine+algae+of+the+Indian+Ocean&ots=FL-YOKu8Cx&sig=3PmT926F1rNHQTf1AhDeY-ztmu4#v=onepage&q=Catalogue%20of%20the%20benthic%20marine%20algae%20of%20the%20 [details]
additional source Guiry, M.D. & Guiry, G.M. (2025). AlgaeBase. <em>World-wide electronic publication, National University of Ireland, Galway.</em> searched on YYYY-MM-DD., available online at http://www.algaebase.org [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
LSID urn:lsid:algaebase.org:taxname:77308 [details]Unreviewed
Authority (Dillwyn) Thuret in Le Jolis, 1863 [details]Diet photosynthetic [details]
Distribution Long Island Sound to Strait of Belle Isle [details]
Habitat common on fucoids and hard substrata in upper littoral [details]
Morphology Green colour from Chlorophyll a and b. [details]
Reproduction general for group: asexual reproduction may be by fission (splitting), fragmentation or by zoospores (motile spores). Sexual reproduction may be isogamous (gametes both motile and same size); anisogamous (both motile and different sizes-female bigger) or oogamous (female non-motile and egglike; male motile) [details]
Published in AlgaeBase 
Published in AlgaeBase (from synonym Ulothrix pseudoflacca Wille, 1901)
Published in AlgaeBase (from synonym Lyngbya flacca (Dillwyn) Harvey, 1849)
Published in AlgaeBase (from synonym Lyngbya carmichaelii Harvey, 1833)
Published in AlgaeBase (from synonym Ulothrix islandica (H.Jónsson) Printz, 1926)
Published in AlgaeBase (from synonym Conferva flacca Dillwyn, 1805)
Published in AlgaeBase (from synonym Ulothrix consociata Wille, 1901)
Published in AlgaeBase (from synonym Ulothrix scutata H.Jónsson, 1904)
Published in AlgaeBase (from synonym Hormotrichum fasciculare Kützing)
Published in AlgaeBase (from synonym Ulothrix consociata var. islandica Jónsson, 1903)
To Barcode of Life (5 barcodes)
To Biodiversity Heritage Library (2 publications) (from synonym Hormotrichum fasciculare Kützing)
To Biodiversity Heritage Library (26 publications) (from synonym Conferva flacca Dillwyn, 1805)
To Biodiversity Heritage Library (29 publications) (from synonym Ulothrix pseudoflacca Wille, 1901)
To Biodiversity Heritage Library (29 publications) (from synonym Ulothrix consociata Wille, 1901)
To Biodiversity Heritage Library (30 publications) (from synonym Lyngbya flacca (Dillwyn) Harvey, 1849)
To Biodiversity Heritage Library (8 publications) (from synonym Ulothrix scutata H.Jónsson, 1904)
To Biodiversity Heritage Library (97 publications)
To Biological Information System for Marine Life (BISMaL)
To European Nucleotide Archive, ENA (Ulothrix flacca)
To Genbank (from synonym Ulothrix pseudoflacca Wille, 1901)
To GenBank (8 nucleotides; 8 proteins) (from synonym Conferva flacca Dillwyn, 1805)
To GenBank (8 nucleotides; 8 proteins)
To NHMUK collection (Ulothrix flacca (Dillwyn) Thur.; NHMUK:ecatalogue:4859140)
To PESI
To PESI (from synonym Ulothrix pseudoflacca Wille, 1901)
To PESI (from synonym Ulothrix consociata Wille, 1901)
To ITIS
Published in AlgaeBase
(from synonym Ulothrix pseudoflacca Wille, 1901)Published in AlgaeBase
(from synonym Lyngbya flacca (Dillwyn) Harvey, 1849)Published in AlgaeBase
(from synonym Lyngbya carmichaelii Harvey, 1833)Published in AlgaeBase
(from synonym Ulothrix islandica (H.Jónsson) Printz, 1926)Published in AlgaeBase
(from synonym Conferva flacca Dillwyn, 1805)Published in AlgaeBase
(from synonym Ulothrix consociata Wille, 1901)Published in AlgaeBase
(from synonym Ulothrix scutata H.Jónsson, 1904)Published in AlgaeBase
(from synonym Hormotrichum fasciculare Kützing)Published in AlgaeBase
(from synonym Ulothrix consociata var. islandica Jónsson, 1903)To Barcode of Life (5 barcodes)
To Biodiversity Heritage Library (2 publications) (from synonym Hormotrichum fasciculare Kützing)
To Biodiversity Heritage Library (26 publications) (from synonym Conferva flacca Dillwyn, 1805)
To Biodiversity Heritage Library (29 publications) (from synonym Ulothrix pseudoflacca Wille, 1901)
To Biodiversity Heritage Library (29 publications) (from synonym Ulothrix consociata Wille, 1901)
To Biodiversity Heritage Library (30 publications) (from synonym Lyngbya flacca (Dillwyn) Harvey, 1849)
To Biodiversity Heritage Library (8 publications) (from synonym Ulothrix scutata H.Jónsson, 1904)
To Biodiversity Heritage Library (97 publications)
To Biological Information System for Marine Life (BISMaL)
To European Nucleotide Archive, ENA (Ulothrix flacca)
To Genbank (from synonym Ulothrix pseudoflacca Wille, 1901)
To GenBank (8 nucleotides; 8 proteins) (from synonym Conferva flacca Dillwyn, 1805)
To GenBank (8 nucleotides; 8 proteins)
To NHMUK collection (Ulothrix flacca (Dillwyn) Thur.; NHMUK:ecatalogue:4859140)
To PESI
To PESI (from synonym Ulothrix pseudoflacca Wille, 1901)
To PESI (from synonym Ulothrix consociata Wille, 1901)
To ITIS
