Oken, L. (1815-1816). Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. 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]. xxviii + 842 pp. + xviii, 40 pls. L [copepods 180-184, 357-359, 4 plates]., available online athttps://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: Nozères, C., Kennedy, M.K. (Eds.) (2025) Canadian Register of Marine Species at: https://www.marinespecies.org/carms/aphia.php?p=taxdetails&id=117103 on 2025-05-28
Nozères, C., Kennedy, M.K. (Eds.) (2025). Canadian Register of Marine Species. Halecium Oken, 1815. Accessed at: https://www.marinespecies.org/CaRMS/aphia.php?p=taxdetails&id=117103 on 2025-05-28
original descriptionOken, L. (1815-1816). Lehrbuch der Naturgeschichte. Dritter Theil: Zoologie. 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]. xxviii + 842 pp. + xviii, 40 pls. L [copepods 180-184, 357-359, 4 plates]., available online athttps://doi.org/10.5962/bhl.title.166403[details]
taxonomy sourceCalder, 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. Zootaxa. 4256(1): 1-86., available online athttps://doi.org/10.11646/zootaxa.4256.1.1 page(s): Table 3.; note: characteristics of all accepted species [details]
context source (Hexacorallia)Fautin, Daphne G. (2013). Hexacorallians of the World. (look up in IMIS) [details]
basis of recordvan der Land, J.; Vervoort, W.; Cairns, S.D.; Schuchert, P. (2001). Hydrozoa, in: Costello, M.J. et al. (Ed.) (2001). 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, 50: pp. 112-120 (look up in IMIS) [details]
additional sourceBrunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. Canadian Special Publication of Fisheries and Aquatic Sciences, 126. 405 pp. (look up in IMIS) [details] Available for editors
additional sourceIntegrated Taxonomic Information System (ITIS). , available online athttp://www.itis.gov[details]
additional sourceHansson, H. (2004). North East Atlantic Taxa (NEAT): Nematoda. Internet pdf Ed. Aug 1998. (look up in IMIS) [details]
additional sourceLiu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. China Science Press. 1267 pp. (look up in IMIS) [details] Available for editors
additional sourceCairns, 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. in: Gordon, D.P. (Ed.) (2009). New Zealand inventory of biodiversity: 1. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. :59-101., available online athttps://repository.si.edu/handle/10088/8431[details] Available for editors
status sourceOpinion 1220. (1982). Halecium Oken, 1815, (Coelenterata, Hydroida): ruled to be an available name & conserved. Bulletin of Zoological Nomenclature. 39(3): 172-174., available online athttps://www.biodiversitylibrary.org/page/12228085 page(s): 172 [details]
Present Inaccurate Introduced: alien Containing type locality
From regional or thematic species database
The Coastal Waters of Southeast Alaska and British Columbia
Unreviewed
Canada
South Africa
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]
Present 