WoRMS taxon details
Oorhiza Mereschowsky, 1878
1723417 (urn:lsid:marinespecies.org:taxname:1723417)
accepted
Genus
Oorhiza borealis Mereschkowsky, 1878 (type by monotypy)
marine, brackish, fresh, terrestrial
recent only
Mereschkowsky C. (1878). Studies on the Hydroida. <em>Annals and Magazine of Natural History (5).</em> 1: 322-340, pls 13-15., available online at https://www.biodiversitylibrary.org/page/27735655
page(s): 325 [details]
page(s): 325 [details]
Status The validity of Oorhiza is unclear and needs reassement of the type species O. borealis using sequence information. Broch...
Status The validity of Oorhiza is unclear and needs reassement of the type species O. borealis using sequence information. Broch (1914: 45) regarded it as synonym of Hydractinia. The origin of the gonophores from the hydrorhiza suggests a relationship with the Cytaeidae (Schuchert, 2008), but the encrusting hydrorhiza and above all the presence of spines argue in favour of Hydractiniidae.
The name was first proposed by Mereschowsky (1877), but this was not valid as a genus without a species name was proposed. [details]
The name was first proposed by Mereschowsky (1877), but this was not valid as a genus without a species name was proposed. [details]
Schuchert, P. (2024). World Hydrozoa Database. Oorhiza Mereschowsky, 1878. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1723417 on 2024-05-23
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original description
Mereschkowsky C. (1878). Studies on the Hydroida. <em>Annals and Magazine of Natural History (5).</em> 1: 322-340, pls 13-15., available online at https://www.biodiversitylibrary.org/page/27735655
page(s): 325 [details]
page(s): 325 [details]
From editor or global species database
Diagnosis Like Hydractinia, but gonozooids completely or nearly so reduced, sporosacs appearing to arise in clusters from stolons. Hydrorhiza encrusting, with spines. [details]Status The validity of Oorhiza is unclear and needs reassement of the type species O. borealis using sequence information. Broch (1914: 45) regarded it as synonym of Hydractinia. The origin of the gonophores from the hydrorhiza suggests a relationship with the Cytaeidae (Schuchert, 2008), but the encrusting hydrorhiza and above all the presence of spines argue in favour of Hydractiniidae.
The name was first proposed by Mereschowsky (1877), but this was not valid as a genus without a species name was proposed. [details]