Hydrozoa taxon details
Polyorchis A. Agassiz, 1862
267759 (urn:lsid:marinespecies.org:taxname:267759)
accepted
Genus
Melicertum penicillatum Eschscholtz, 1829 accepted as Polyorchis penicillatus (Eschscholtz, 1829) (type by monotypy)
- Species Polyorchis haplus Skogsberg, 1948
- Species Polyorchis karafutoensis Kishinouye, 1910
- Species Polyorchis penicillatus (Eschscholtz, 1829)
- Species Polyorchis campanulatus (Chamisso, 1820) accepted as Polyorchis penicillatus (Eschscholtz, 1829) (not in use)
- Species Polyorchis minuta Murbach & Shaerer, 1902 accepted as Polyorchis penicillatus (Eschscholtz, 1829) (unaccepted > junior subjective synonym)
- Species Polyorchis montereyensis Skogsberg, 1948 accepted as Polyorchis penicillatus (Eschscholtz, 1829) (unaccepted > junior subjective synonym)
- Species Polyorchis pinnatus Haeckel, 1879 accepted as Polyorchis penicillatus (Eschscholtz, 1829) (unaccepted > junior subjective synonym)
- Species Polyorchis saltatrix (Tilesius, 1818) accepted as Spirocodon saltatrix (Tilesius, 1818) (unaccepted combination)
marine, brackish, fresh, terrestrial
recent only
Agassiz, L. (1862). Contributions to the natural history of the United States of America. <em>Little Brown, Boston.</em> 4: 1-380, pls 1-19., available online at https://www.biodiversitylibrary.org/page/16068829
page(s): 349 [details]
page(s): 349 [details]
Taxonomy Classification as Corynidae according to Nawrocki et al. 2010
Taxonomy Classification as Corynidae according to Nawrocki et al. 2010 [details]
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2025). World Hydrozoa Database. Polyorchis A. Agassiz, 1862. Accessed at: https://marinespecies.org/hydrozoa/aphia.php/api-docs/css/aphia.php?p=taxdetails&id=267759 on 2025-12-21
Date
action
by
original description
Agassiz, L. (1862). Contributions to the natural history of the United States of America. <em>Little Brown, Boston.</em> 4: 1-380, pls 1-19., available online at https://www.biodiversitylibrary.org/page/16068829
page(s): 349 [details]
basis of record van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
status source Nawrocki, A. M., Schuchert, P., & Cartwright, P. 2010. Phylogenetics and evolution of Capitata (Cnidaria: Hydrozoa), and the systematics of Corynidae. Zoologica Scripta 39(3): 290-304. [details] Available for editors
page(s): 349 [details]
basis of record van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]
status source Nawrocki, A. M., Schuchert, P., & Cartwright, P. 2010. Phylogenetics and evolution of Capitata (Cnidaria: Hydrozoa), and the systematics of Corynidae. Zoologica Scripta 39(3): 290-304. [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Medusa: marginal hollow tentacles numerous, in a simple row along exumbrella margin; tentacular bulbs tubular, adnate, with ocellus on short spur; four radial canals with numerous, short, blind lateral diverticula; ring canal with or without branched diverticula; gastric peduncle pronounced; manubrium prismatic with pendant sausage-shaped bearing the gonads; four crenulated oral lips with distinct nematocysts rows.Polyp unknown [details]
Taxonomy Classification as Corynidae according to Nawrocki et al. 2010 [details]
To Biological Information System for Marine Life (BISMaL)
To European Nucleotide Archive, ENA (Polyorchis)
To ITIS
To European Nucleotide Archive, ENA (Polyorchis)
To ITIS
From editor or global species database
Image from typetaxon