Hydra Linnaeus, 1758

Calder, Dale R., 2010, Some anthoathecate hydroids and limnopolyps (Cnidaria, Hydrozoa) from the Hawaiian archipelago 2590, Zootaxa 2590 (1), pp. 1-91 : 44

publication ID	https://doi.org/ 10.11646/zootaxa.2590.1.1
DOI	https://doi.org/10.5281/zenodo.10538526
persistent identifier	https://treatment.plazi.org/id/03E27F25-FFD5-FFE4-DCFF-FC7472B04ACF
treatment provided by	Felipe
scientific name	Hydra Linnaeus, 1758
status

Treatment

Genus Hydra Linnaeus, 1758 View in CoL

Hydra Linnaeus, 1758: 816 View in CoL View Cited Treatment .

Type species. None validly designated.

Diagnosis. With the characters of the family.

Remarks. Confusion exists over the type species of Hydra Linnaeus, 1758 , in part because of significant nomenclatural problems mentioned above. That designation has been assigned to Hydra viridis Linnaeus, 1767 by Annandale (1911), to H. vulgaris Pallas, 1766 by Apstein (1915), and to Hydra oligactis Pallas, 1766 by Petersen (1990), but all are ineligible because they were not among the originally included nominal species in the genus when it was founded by Linnaeus (1758).

Campbell (1989) provided a history of research on Hydra and reviewed European species of the genus. While this fresh water genus is represented on few oceanic islands ( Jankowski et al. 2008), it has long been known to occur on Hawaii ( Mumford 1940).