WoRMS taxon details
Halecium Oken, 1815
117103 (urn:lsid:marinespecies.org:taxname:117103)
accepted
Genus
Baleum Billard, 1929 · unaccepted
Endothecium Fraser, 1935 · unaccepted (preoccupied by Endothecium...)
preoccupied by Endothecium Koker,1924 [Anthozoa]
Haloikema Bourne, 1890 · unaccepted (synonym)
Sagamihydra Hirohito, 1995 · unaccepted
Thoa Lamouroux, 1816 · unaccepted (synonym)
- Species Halecium amphibolum Watson, 1993
- Species Halecium annulatum Torrey, 1902
- Species Halecium annuliforme Galea & Schories, 2012
- Species Halecium antarcticum Vanhöffen, 1910
- Species Halecium arcticum Ronowicz & Schuchert, 2007
- Species Halecium argentum Clarke, 1894
- Species Halecium articulosum Clark, 1875
- Species Halecium banyulense Motz-Kossowska, 1912
- Species Halecium banzare Watson, 2008
- Species Halecium beanii (Johnston, 1838)
- Species Halecium bermudense Congdon, 1907
- Species Halecium birulai Spassky, 1929
- Species Halecium bithecum Watson, 2005
- Species Halecium brashnikowi Linko, 1911
- Species Halecium brevithecum Watson, 2008
- Species Halecium bruniensis Watson, 1975
- Species Halecium calderi Galea, 2010
- Species Halecium conicum Stechow, 1919
- Species Halecium corrugatissimum Trebilcock, 1928
- Species Halecium corrugatum Nutting, 1899
- Species Halecium crinis Stechow, 1913
- Species Halecium curvicaule Lorenz, 1886
- Species Halecium cymiforme Allman, 1888
- Species Halecium cymosum Fraser, 1935
- Species Halecium delicatulum Coughtrey, 1876
- Species Halecium densum Calkins, 1899
- Species Halecium dichotomum Allman, 1888
- Species Halecium diminutivum Fraser, 1942
- Species Halecium discoidum Galea, 2013
- Species Halecium dubium Fraser, 1941
- Species Halecium dufresnae Millard, 1977
- Species Halecium dyssymetrum Billard, 1929
- Species Halecium edwardsianum (d'Orbigny, 1842)
- Species Halecium elegantulum Watson, 2008
- Species Halecium erratum Galea, Försterra, Häussermann & Schories, 2014
- Species Halecium exaggeratum Peña Cantero, Boero & Piraino, 2013
- Species Halecium exiguum Fraser, 1948
- Species Halecium expansum Trebilcock, 1928
- Species Halecium fasciculatum Fraser, 1938
- Species Halecium fijiensis Watson, 2015
- Species Halecium filicula Allman, 1877
- Species Halecium fjordlandicum Galea, 2007
- Species Halecium flabellatum Fraser, 1935
- Species Halecium flexum Fraser, 1948
- Species Halecium fragile Hodgson, 1950
- Species Halecium fraseri Ralph, 1958
- Species Halecium frigidum Peña Cantero, 2010
- Species Halecium galeatum Billard, 1937
- Species Halecium groenlandicum Kramp, 1911
- Species Halecium halecinum (Linnaeus, 1758)
- Species Halecium harrimani Nutting, 1901
- Species Halecium humeriformis Galea & Schories, 2014
- Species Halecium humile Pictet, 1893
- Species Halecium incertus Naumov & Stepanjants, 1962
- Species Halecium inhacae Millard, 1958
- Species Halecium insolens Fraser, 1938
- Species Halecium interpolatum Ritchie, 1907
- Species Halecium irregulare Bonnevie, 1899
- Species Halecium jaederholmi Vervoort, 1972
- Species Halecium kofoidi Torrey, 1902
- Species Halecium labiatum Billard, 1933
- Species Halecium labrosum Alder, 1859
- Species Halecium laeve Kramp, 1932
- Species Halecium lamourouxianum (d'Orbigny, 1842)
- Species Halecium lankesterii (Bourne, 1890)
- Species Halecium lenticulare Trebilcock, 1928
- Species Halecium lightbourni Calder, 1991
- Species Halecium linkoi Antsulevich, 1980
- Species Halecium liouvillei Billard, 1934
- Species Halecium lucium Antsulevich, 1979
- Species Halecium luteum Watson, 1975
- Species Halecium macrocaulus Watson, 2008
- Species Halecium macrocephalum Allman, 1877
- Species Halecium marocanum Billard, 1934
- Species Halecium marsupiale Bergh, 1887
- Species Halecium maximum Galea & Schories, 2014
- Species Halecium mediterraneum Weismann, 1883
- Species Halecium minutum Broch, 1903
- Species Halecium mirabile Schydlowsky, 1902
- Species Halecium mirandus Antsulevich & Regel, 1986
- Species Halecium modestum Galea & Schories, 2014
- Species Halecium muricatum (Ellis & Solander, 1786)
- Species Halecium mutilum Allman, 1876
- Species Halecium nanum Alder, 1859
- Species Halecium nullinodum Fraser, 1935
- Species Halecium obovatum Watson, 2018
- Species Halecium ochotense Linko, 1911
- Species Halecium ornatum Nutting, 1901
- Species Halecium ovatum Totton, 1930
- Species Halecium pallens Jäderholm, 1904
- Species Halecium paucinodum (Fraser, 1947)
- Species Halecium pearsonenese Watson, 1997
- Species Halecium perexiguum Hirohito, 1995
- Species Halecium permodicum Calder, 2017
- Species Halecium petrosum Stechow, 1919
- Species Halecium planum Bonnevie, 1901
- Species Halecium platythecum Galea, Försterra & Häussermann, 2014
- Species Halecium plicatocarpum Vervoort & Watson, 2003
- Species Halecium plicatum Galea, 2015
- Species Halecium plumosum Hincks, 1868
- Species Halecium praeparvum Calder, 2017
- Species Halecium profundum Calder & Vervoort, 1998
- Species Halecium pseudodelicatulum Peña Cantero, 2014
- Species Halecium pseudoincertus Peña Cantero, 2014
- Species Halecium pusillum (Sars, 1857)
- Species Halecium pyriforme Hirohito, 1995
- Species Halecium ralpha Watson & Vervoort, 2001
- Species Halecium reduplicatum (Fraser, 1935)
- Species Halecium regulare Fraser, 1938
- Species Halecium reversum Nutting, 1901
- Species Halecium scalariformis Billard, 1929
- Species Halecium scandens Nutting, 1906
- Species Halecium scutum Clark, 1977
- Species Halecium secundum Jäderholm, 1904
- Species Halecium sessile Norman, 1867
- Species Halecium sibogae Billard, 1929
- Species Halecium singulare (Billard, 1929)
- Species Halecium spatulum Watson, 2000
- Species Halecium speciosum Nutting, 1901
- Species Halecium stoloniferum Soto Angel & Peña Cantero, 2015
- Species Halecium tabulatum Watson, 2005
- Species Halecium tangaroa Peña Cantero, 2017
- Species Halecium telescopicum Allman, 1888
- Species Halecium tenellum Hincks, 1861
- Species Halecium tensum Fraser, 1941
- Species Halecium tenue Fraser, 1938
- Species Halecium textum Kramp, 1911
- Species Halecium tortile Bonnevie, 1898
- Species Halecium tortum Fraser, 1938
- Species Halecium tristaniensis Galea, 2014
- Species Halecium tubatum Watson, 2008
- Species Halecium turbinariae Galea & Maggioni, 2024
- Species Halecium vagans Fraser, 1938
- Species Halecium vasiforme Fraser, 1935
- Species Halecium wilsoni Calkins, 1899
- Species Halecium xanthellatum Galea, 2013
- Species Halecium annulatum Stechow, 1919 accepted as Halecium pusillum (Sars, 1857) (invalid junior homonym of Halecium annulatum Torrey, 1902)
- Species Halecium arboreum Allman, 1888 accepted as Hydrodendron arboreum (Allman, 1888) (basionym)
- Species Halecium beanei (Johnston, 1838) accepted as Halecium beanii (Johnston, 1838) (incorrect spelling)
- Species Halecium beringi Naumov, 1960 accepted as Halecium scutum Clark, 1977 (unaccepted > junior subjective synonym)
- Species Halecium boreale Lorenz, 1886 accepted as Halecium scutum Clark, 1977 (unaccepted > junior subjective synonym)
- Species Halecium flexile Allman, 1888 accepted as Halecium delicatulum Coughtrey, 1876 (possible synonym)
- Species Halecium gardineri Jarvis, 1922 accepted as Hydrodendron gardineri (Jarvis, 1922) (genus transfer)
- Species Halecium geniculatum Nutting, 1899 accepted as Halecium washingtoni Nutting, 1901 accepted as Halecium wilsoni Calkins, 1899 (invalid junior homonym of Halecium geniculatum Norman, 1867)
- Species Halecium geniculatum Norman, 1867 accepted as Halecium halecinum (Linnaeus, 1758) (synonym)
- Species Halecium gorgonoide G.O. Sars, 1874 accepted as Hydrodendron gorgonoide (G.O. Sars, 1874)
- Species Halecium gracile Verrill, 1873c accepted as Halecium halecinum (Linnaeus, 1758) (synonym)
- Species Halecium gracile Bale, 1893 accepted as Halecium delicatulum Coughtrey, 1876 (unaccepted > junior homonym, synonym and invalid junior homonym of Halecium gracile Verrill, 1874)
- Species Halecium halecium (Linnaeus, 1758) accepted as Halecium halecinum (Linnaeus, 1758) (misspelling)
- Species Halecium insigne (Hincks, 1861) accepted as Eudendrium ramosum (Linnaeus, 1758) (wrong genus combination)
- Species Halecium kuekenthali Marktanner-Turneretscher, 1895 accepted as Halecium curvicaule Lorenz, 1886 (unaccepted > junior subjective synonym)
- Species Halecium lankesteri (Bourne, 1890) accepted as Halecium lankesterii (Bourne, 1890) (unaccepted > misspelling - incorrect subsequent spelling)
- Species Halecium lighti Hargitt, 1924 accepted as Nemalecium lighti (Hargitt, 1924) (unaccepted > superseded combination, basionym)
- Species Halecium minor Fraser, 1935 accepted as Halecium permodicum Calder, 2017 (invalid junior homonym of Halecium minor Pictet, 1893)
- Species Halecium minutum Motz-Kossowska, 1911 accepted as Halecium conicum Stechow, 1919 (invalid junior homonym of Halecium minutum Broch, 1903)
- Species Halecium murmanicum Spassky, 1929 accepted as Halecium curvicaule Lorenz, 1886 (unaccepted > junior subjective synonym)
- Species Halecium ophiodes Pieper, 1884 accepted as Halecium pusillum (Sars, 1857) (unaccepted > junior subjective synonym)
- Species Halecium parvulum Bale, 1888 accepted as Halecium delicatulum Coughtrey, 1876 (synonym)
- Species Halecium plumularioides Clark, 1877 accepted as Plumalecium plumularioides (Clark, 1877) (basionym)
- Species Halecium polytheca Linko, 1911 accepted as Halecium groenlandicum Kramp, 1911 (unaccepted > junior subjective synonym)
- Species Halecium pygmaeum Fraser, 1911 accepted as Halecium mirabile Schydlowsky, 1902 (unaccepted > junior subjective synonym)
- Species Halecium reflexum Stechow, 1919 accepted as Halecium conicum Stechow, 1919 (synoynm)
- Species Halecium repens Jäderholm, 1907 accepted as Halecium curvicaule Lorenz, 1886 (unaccepted > junior subjective synonym)
- Species Halecium robustum Nutting, 1901 accepted as Halecium harrimani Nutting, 1901 (invalid junior homonym of Halecium robustum Pieper, 1884 and Halecium robustum Allman, 1888)
- Species Halecium robustum Allman, 1888 accepted as Hydrodendron arboreum (Allman, 1888) (invalid junior homonym of Halecium robustum Verrill, 1873)
- Species Halecium robustum Verrill, 1873 accepted as Zygophylax pinnata (G.O. Sars, 1874) (synonym)
- Species Halecium robustum Pieper, 1884 accepted as Halecium lankesterii (Bourne, 1890) (invalid junior homonym of Halecium robustum Verrill, 1873 and others)
- Species Halecium schneideri Bonnevie, 1898 accepted as Halecium pusillum (Sars, 1857) (unaccepted > junior subjective synonym, synonym)
- Species Halecium simplex Pictet, 1893 accepted as Mitrocomium simplex (Pictet, 1893) (genus transfer)
- Species Halecium Torreyi Motz-Kossowska, 1911 accepted as Mitrocomium cirratum Haeckel, 1879 accepted as Lovenella cirrata (Haeckel, 1879) (possible synonym)
- Species Halecium undulatum Billard, 1921 accepted as Halecium textum Kramp, 1911 (unaccepted > junior subjective synonym, possible synonym, species inquirenda)
- Species Halecium washingtoni Nutting, 1901 accepted as Halecium wilsoni Calkins, 1899 (unaccepted > junior subjective synonym)
- Species Halecium capillaris (Pourtalès, 1867) (uncertain > taxon inquirendum)
- Species Halecium fruticosum Fraser, 1943 (uncertain > taxon inquirendum)
- Species Halecium minimum Schneider, 1898 (uncertain > taxon inquirendum, unrecognisable, indeterminate)
- Species Halecium minor Pictet, 1893 (uncertain > taxon inquirendum)
- Species Halecium patagonicum (d'Orbigny, 1842) (uncertain > taxon inquirendum)
- Species Halecium tehuelchum (d'Orbigny, 1842) (uncertain > taxon inquirendum)
marine, fresh, terrestrial
Oken, L. (1815-1816). Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. <em>Erste Abtheilung: Fleischlose Thiere,Leipzig: C.H. Reclam & Jena: A. Schmid, [book (3rd vol part one, of 3 vols, including plates atlas of T.1, 1813].</em> xxviii + 842 pp. + xviii, 40 pls. L [copepods 180-184, 357-359, 4 plates]., available online at https://doi.org/10.5962/bhl.title.166403 [details] 
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2025). World Hydrozoa Database. Halecium Oken, 1815. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=117103 on 2025-05-04
Date
action
by
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Oken, L. (1815-1816). Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. <em>Erste Abtheilung: Fleischlose Thiere,Leipzig: C.H. Reclam & Jena: A. Schmid, [book (3rd vol part one, of 3 vols, including plates atlas of T.1, 1813].</em> xxviii + 842 pp. + xviii, 40 pls. L [copepods 180-184, 357-359, 4 plates]., available online at https://doi.org/10.5962/bhl.title.166403 [details] 
original description (of Thoa Lamouroux, 1816) Lamouroux, J. V. F. (1816). Histoire des polypiers coralligènes flexibles, vulgairement nommés zoophytes. <em>F. Poisson, Caen.</em> i-lxxxiv, 1-558, pls. I-XIX., available online at https://www.biodiversitylibrary.org/page/11606092
page(s): 210 [details]
original description (of Baleum Billard, 1929) Billard, A., 1929. Note sur un genre nouveau et quelques espèces nouvelles d'Halecidae. Bull. Soc. zool. Fr. 54 : 305-307.
page(s): 305 [details]
original description (of Sagamihydra Hirohito, 1995) Hirohito, 1995. The hydroids of Sagami Bay. (Part 2. Thecata). Publs Biol. Lab., Imp. Household, Tokyo, 1995 : i-l, 1-244.
page(s): 41 [details]
original description (of Endothecium Fraser, 1935) Fraser, C.M. 1935a. Some Japanese hydroids, mostly new. Proceedings and transactions of the Royal Society of Canada (3)29 sect. V: 105-112, pl. 1-2.
page(s): 107 [details]
original description (of Haloikema Bourne, 1890) Bourne, G.C., 1890. Notes on the hydroids of Plymouth. J. mar. biol. Ass. U.K., n. ser. 1 4: 391-398., available online at https://www.biodiversitylibrary.org/page/11557347
page(s): 395 [details]
basis of record van der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, <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. 112-120 (look up in IMIS) [details]
original description (of Thoa Lamouroux, 1816) Lamouroux, J. V. F. (1816). Histoire des polypiers coralligènes flexibles, vulgairement nommés zoophytes. <em>F. Poisson, Caen.</em> i-lxxxiv, 1-558, pls. I-XIX., available online at https://www.biodiversitylibrary.org/page/11606092
page(s): 210 [details]
original description (of Baleum Billard, 1929) Billard, A., 1929. Note sur un genre nouveau et quelques espèces nouvelles d'Halecidae. Bull. Soc. zool. Fr. 54 : 305-307.
page(s): 305 [details]
original description (of Sagamihydra Hirohito, 1995) Hirohito, 1995. The hydroids of Sagami Bay. (Part 2. Thecata). Publs Biol. Lab., Imp. Household, Tokyo, 1995 : i-l, 1-244.
page(s): 41 [details]
original description (of Endothecium Fraser, 1935) Fraser, C.M. 1935a. Some Japanese hydroids, mostly new. Proceedings and transactions of the Royal Society of Canada (3)29 sect. V: 105-112, pl. 1-2.
page(s): 107 [details]
original description (of Haloikema Bourne, 1890) Bourne, G.C., 1890. Notes on the hydroids of Plymouth. J. mar. biol. Ass. U.K., n. ser. 1 4: 391-398., available online at https://www.biodiversitylibrary.org/page/11557347
page(s): 395 [details]
basis of record van der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, <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. 112-120 (look up in IMIS) [details]
Taxonomy
taxonomy source
Calder, D. R. (2017). Additions to the hydroids (Cnidaria, Hydrozoa) of the Bay of Fundy, northeastern North America, with a checklist of species reported from the region. <em>Zootaxa.</em> 4256(1): 1-86., available online at https://doi.org/10.11646/zootaxa.4256.1.1
page(s): Table 3.; note: characteristics of all accepted species [details]
status source Opinion 1220. (1982). Halecium Oken, 1815, (Coelenterata, Hydroida): ruled to be an available name & conserved. <em>Bulletin of Zoological Nomenclature.</em> 39(3): 172-174., available online at https://www.biodiversitylibrary.org/page/12228085
page(s): 172 [details]
page(s): Table 3.; note: characteristics of all accepted species [details]
status source Opinion 1220. (1982). Halecium Oken, 1815, (Coelenterata, Hydroida): ruled to be an available name & conserved. <em>Bulletin of Zoological Nomenclature.</em> 39(3): 172-174., available online at https://www.biodiversitylibrary.org/page/12228085
page(s): 172 [details]
Other
context source (Hexacorallia)
Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [details]
additional source Brunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. <em>Canadian Special Publication of Fisheries and Aquatic Sciences, 126.</em> 405 pp. (look up in IMIS) [details] Available for editors
[request]
additional source NODC. (1997). NODC Taxonomic codes. [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
additional source Hansson, H. (2004). North East Atlantic Taxa (NEAT): Nematoda. Internet pdf Ed. Aug 1998. (look up in IMIS) [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 Cairns, S.D., L. Gershwin, F.J. Brook, P. Pugh, E.W. Dawson, O.V. Ocaña, W. Vervoort, G. Williams, J.E. Watson, D.M. Opresko, P. Schuchert, P.M. Hine, D.P. Gordon, H.I. Campbell, A.J. Wright, J.A.Sánchez & D.G. Fautin. (2009). Phylum Cnidaria: corals, medusae, hydroids, myxozoans. <em>in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.</em> :59-101., available online at https://repository.si.edu/handle/10088/8431 [details] Available for editors
[request]
additional source Brunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. <em>Canadian Special Publication of Fisheries and Aquatic Sciences, 126.</em> 405 pp. (look up in IMIS) [details] Available for editors

additional source NODC. (1997). NODC Taxonomic codes. [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
additional source Hansson, H. (2004). North East Atlantic Taxa (NEAT): Nematoda. Internet pdf Ed. Aug 1998. (look up in IMIS) [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

additional source Cairns, S.D., L. Gershwin, F.J. Brook, P. Pugh, E.W. Dawson, O.V. Ocaña, W. Vervoort, G. Williams, J.E. Watson, D.M. Opresko, P. Schuchert, P.M. Hine, D.P. Gordon, H.I. Campbell, A.J. Wright, J.A.Sánchez & D.G. Fautin. (2009). Phylum Cnidaria: corals, medusae, hydroids, myxozoans. <em>in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia.</em> :59-101., available online at https://repository.si.edu/handle/10088/8431 [details] Available for editors





From editor or global species database
Diagnosis Colony usually erect, monosiphonic or polysiphonic, branched or unbranched, arising from a creeping hydrorhiza, stem and branches divided in internodes bearing apohyses near distal end; hydrothecae alternate, sessile or pedicellate, borne on apophyses when not pedicellate, shallow; rim commonly everted and regenerated; a ring of large desmocytes and a basal diaphragm; hydranth not retractable into hydrotheca, often with an annular bugle half way up the gastric column; intertentacular web present or not; nematotheca and nematophores absent; gonophores as fixed sporosacs in gonothecae sometimes with acrocyst, gonothecae either solitary or aggregated to form a glomulus, usually sexually dimorphic, sometimes with gonophoral polyps or arising from within hydrothecae; typically sexually dimorphic. [details]
Language | Name | |
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Japanese | ホソガヤ属 | [details] |