Hydrozoa taxon details

Hydra Linnaeus, 1758

Family Hydridae - Genus Hydra
Family Hydridae - Genus Hydra

267491  (urn:lsid:marinespecies.org:taxname:267491)

accepted
Genus
Hydra polypus Linnaeus, 1758 accepted as Hydra circumcincta Schulze, 1914 (type by subsequent designation)
Chlorohydra Schulze, 1914 · unaccepted (synonym)
Pelmatohydra Schulze, 1914 · unaccepted (synonym)

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  1. Species Hydra baikalensis Swarczewsky, 1923
  2. Species Hydra beijingensis Fan, 2003
  3. Species Hydra canadensis Rowan, 1930
  4. Species Hydra cauliculata Hyman, 1938
  5. Species Hydra circumcincta Schulze, 1914
  6. Species Hydra daqingensis Fan, 2000
  7. Species Hydra ethiopiae Hickson, 1930
  8. Species Hydra hadleyi (Forrest, 1959)
  9. Species Hydra harbinensis Fan & Shi, 2003
  10. Species Hydra hymanae Hadley & Forrest, 1949
  11. Species Hydra iheringi Cordero, 1939
  12. Species Hydra intaba Ewer, 1948
  13. Species Hydra intermedia De Carvalho Wolle, 1978
  14. Species Hydra japonica Itô, 1947
  15. Species Hydra javanica Schulze, 1927
  16. Species Hydra liriosoma Campbell, 1987
  17. Species Hydra madagascariensis Campbell, 1999
  18. Species Hydra magellanica Schulze, 1927
  19. Species Hydra mariana Cox & Young, 1973
  20. Species Hydra minima Forrest, 1963
  21. Species Hydra mohensis Fan & Shi, 1999
  22. Species Hydra oligactis Pallas, 1766
  23. Species Hydra oregona Griffin & Peters, 1939
  24. Species Hydra oxycnida Schulze, 1914
  25. Species Hydra paludicola Itô, 1947
  26. Species Hydra paranensis Cernosvitov, 1935
  27. Species Hydra parva Itô, 1947
  28. Species Hydra plagiodesmica Dioni, 1968
  29. Species Hydra polymorpha Chen & Wang, 2008
  30. Species Hydra robusta (Itô, 1947)
  31. Species Hydra rutgersensis Forrest, 1963
  32. Species Hydra salmacidis Lang da Silveira, Souza-Gomes & de Souza e Silva, 1997
  33. Species Hydra sinensis Wang, Deng, Lai & Li, 2009
  34. Species Hydra thomseni Cordero, 1941
  35. Species Hydra umfula Ewer, 1948
  36. Species Hydra utahensis Hyman, 1931
  37. Species Hydra viridissima Pallas, 1766
  38. Species Hydra vulgaris Pallas, 1766
    1. Subspecies Hydra vulgaris aurantiaca Ehrenberg, 1838 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  39. Species Hydra zeylandica Burt, 1929
  40. Species Hydra zhujiangensis Liu & Wang, 2010
  41. Species Hydra brunnea Templeton, 1836 (uncertain > taxon inquirendum)
  42. Species Hydra hexactinella von Lendenfeld, 1886 (uncertain > taxon inquirendum)
  43. Species Hydra orientalis Annandale, 1905 (uncertain > taxon inquirendum)
  44. Species Hydra rubra Lewes, 1860 (uncertain > taxon inquirendum)
  45. Species Hydra tenuis Ayres, 1856 (uncertain > taxon inquirendum)
  46. Species Hydra verrucosa Templeton, 1836 (uncertain > taxon inquirendum)
  47. Species Hydra aculeata Wagner, 1833 accepted as Hydractinia aculeata (Wagner, 1833) (basionym)
  48. Species Hydra americana Hyman, 1929 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  49. Species Hydra attenuata Pallas, 1766 accepted as Hydra circumcincta Schulze, 1914 (synonym)
    1. Subspecies Hydra attenuata thomseni Cordero, 1941 accepted as Hydra thomseni Cordero, 1941 (promoted to species rank)
  50. Species Hydra braueri Bedot, 1912 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  51. Species Hydra carnea L. Agassiz, 1851 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  52. Species Hydra corala Elrod & Ricker, 1902 accepted as Hydra oligactis Pallas, 1766 (indeterminate species)
  53. Species Hydra corallifera Gaertner, 1762 accepted as Cucumaria frondosa (Gunnerus, 1767) (synonym)
  54. Species Hydra corynaria Bosc, 1797 accepted as Cladocoryne floccosa Rotch, 1871 (invalid name)
  55. Species Hydra dioecia Downing, 1905 accepted as Hydra oligactis Pallas, 1766 (indeterminate species)
  56. Species Hydra disciflora Gaertner, 1762 accepted as Aulactinia verrucosa (Pennant, 1777) accepted as Bunodactis verrucosa (Pennant, 1777) (synonym)
  57. Species Hydra fusca Linnaeus, 1767 accepted as Hydra oligactis Pallas, 1766 (synonym)
  58. Species Hydra graysoni Maxwell, 1970 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  59. Species Hydra grisea Linnaeus, 1767 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  60. Species Hydra littoralis Hyman, 1931 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  61. Species Hydra magnipapillata Itô, 1947 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  62. Species Hydra monoecia Downing, 1900 accepted as Hydra oligactis Pallas, 1766 (synonym)
  63. Species Hydra multicornis Forsskål, 1775 accepted as Clava multicornis (Forsskål, 1775) (basionym)
  64. Species Hydra ovata Boecker, 1920 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  65. Species Hydra oxycnicoides Schulze, 1927 accepted as Hydra oxycnida Schulze, 1914 (synonym)
  66. Species Hydra pallens Linnaeus, 1767 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  67. Species Hydra pallida Beardsley, 1904 accepted as Hydra oligactis Pallas, 1766 (indeterminate species)
  68. Species Hydra pirardi Brien, 1961 accepted as Hydra oxycnida Schulze, 1914 (synonym)
  69. Species Hydra polypus Linnaeus, 1758 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  70. Species Hydra pseudoligactis (Hyman, 1931) accepted as Hydra canadensis Rowan, 1930 (synonym)
  71. Species Hydra quiternana Bosc, 1797 accepted as Dynamena quadridentata (Ellis & Solander, 1786) (synonym)
  72. Species Hydra ramosa Fabricius, 1780 accepted as Coryne pusilla Gaertner, 1774 (synonym)
  73. Species Hydra rhaetica Asper, 1879 accepted as Hydra oligactis Pallas, 1766 (synonym)
  74. Species Hydra rhistica Asper, 1880 accepted as Hydra oligactis Pallas, 1766 (synonym)
  75. Species Hydra roeselii Haacke, 1879 accepted as Hydra oligactis Pallas, 1766 (synonym)
  76. Species Hydra shenzhensis Wang & Deng, 2012 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  77. Species Hydra squamata Müller, 1776 accepted as Clava squamata (Müller, 1776) accepted as Clava multicornis (Forsskål, 1775) (basionym)
  78. Species Hydra stellata Schulze, 1914 accepted as Hydra circumcincta Schulze, 1914 (synonym)
  79. Species Hydra Trembleyi Haacke, 1879 accepted as Hydra vulgaris Pallas, 1766 (synonym)
  80. Species Hydra viridis Linnaeus, 1767 accepted as Hydra viridissima Pallas, 1766 (synonym)
marine, brackish, fresh, terrestrial
recent only
Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. [The system of nature through the three kingdoms of nature, according to classes, orders, genera, species, with characters, differences, synonyms, places.]. <em>Impensis Direct. Laurentii Salvii. Holmiae [Stockholm].</em> 1(10) [iii], 824 p., available online at https://biodiversitylibrary.org/page/726886 [details] Available for editors  PDF available
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2025). World Hydrozoa Database. Hydra Linnaeus, 1758. Accessed at: https://www.marinespecies.org/hydrozoa/aphia.php?p=taxdetails&id=267491 on 2026-01-12
Date
action
by
2008-01-14 11:18:07Z
created
van der Land, Jacob
2009-04-29 06:52:24Z
changed
Schuchert, Peter
2019-06-26 07:38:19Z
changed
Schuchert, Peter

original description Linnaeus, C. (1758). Systema Naturae per regna tria naturae, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. [The system of nature through the three kingdoms of nature, according to classes, orders, genera, species, with characters, differences, synonyms, places.]. <em>Impensis Direct. Laurentii Salvii. Holmiae [Stockholm].</em> 1(10) [iii], 824 p., available online at https://biodiversitylibrary.org/page/726886 [details] Available for editors  PDF available

original description (of Pelmatohydra Schulze, 1914) Schulze, P. 1914. Bestimmungstabelle der deutschen Hydraarten. Vorläufige Mitteilung. - Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin 9: 395-398, figs. [details] 

original description (of Chlorohydra Schulze, 1914) Schulze, P. 1914. Bestimmungstabelle der deutschen Hydraarten. Vorläufige Mitteilung. - Sitzungsberichte der Gesellschaft naturforschender Freunde zu Berlin 9: 395-398, figs. [details] 

additional source McMurrich, J. P. (1893). Report on the Actiniæ collected by the United States Fish Commission Steamer Albatross during the winter of 1887-1888. Proceedings of the United States National Museum, 16(930): 119-216
page(s): 123 [details] OpenAccess publication

additional source Robson, E. A. (2004). Cnidogenesis in the jewel anemone Corynactis californica (Carlgren, 1936) and C. viridis (Allman, 1846) (Anthozoa: Corallimorpharia). Zoologische Mededelingen, Leiden, 78(27): 461-476
page(s): 461 [details] 

redescription Schuchert, P. (2010). The European athecate hydroids and their medusae (Hydrozoa, Cnidaria): Capitata Part 2. <em>Revue Suisse de Zoologie.</em> 117: 337-555., available online at https://doi.org/10.5962/bhl.part.117793
page(s): 440 [details] OpenAccess publication
 
 Present  Inaccurate  Introduced: alien  Containing type locality 
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To European Nucleotide Archive, ENA (Hydra) 
To Genbank (from synonym Pelmatohydra Schulze, 1914)
To Genbank (from synonym Chlorohydra Schulze, 1914)
To Genbank 
To Yale Peabody Museum of Natural History (YPM IZ 091808) 
To ITIS
From editor or global species database
Unreviewed
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