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Creatures » … » Animal » Cnidarians » Hydrozoans » … » Hydractiniidae » …

Hydractinia uniformis Stampar, Tronolone & Morandini 2006

Scientific Names

Preferred Names

Hydractinia uniformis Stampar, Tronolone & Morandini 2006
Species recognized by EOL Dynamic Hierarchy April 2022
Reference taxon from World Register of Marine Species
Hydractinia uniformis
Species recognized by wikipedia NL
Hydractinia uniformis Stampar et al. 2006
Recognized by OBIS environmental data records
Hydractinia uniformis Stampar, Tronolone & Morandini 2006
Species recognized by EOL Dynamic Hierarchy 1.1, EOL Dynamic Hierarchy 1.1, and GBIF classification
Hydractinia uniformis
Species recognized by wikidata_hierarchy tar gz
Hydractinia uniformis Stampar, Tronolone & Morandini 2006
Species recognized by Catalogue of Life 7 February 2023, World Register of Marine Species, and GBIF data coverage

Common Names

There are no common names associated with this taxon.

Curated hierarchies for Hydractinia uniformis Stampar, Tronolone & Morandini 2006

EOL Dynamic Hierarchy April 2022

Life
Cellular Organisms
Eukaryota
Opisthokonta
Metazoa
Cnidaria
Hydrozoa Owen 1843
Hydroidolina Collins 2000
Anthoathecata Cornelius 1992
Filifera Kühn 1913
Hydractiniidae L. Agassiz 1862
Hydractinia Van Beneden 1844
Hydractinia uniformis Stampar, Tronolone & Morandini 2006 (this page)
Hydractinia aculeata (Wagner 1833)
Hydractinia aggregata Fraser 1911
Hydractinia altispina Millard 1955
Hydractinia anechinata (Ritchie 1907)
Hydractinia angusta Hartlaub 1904
Hydractinia apicata (Kramp 1959)
Hydractinia arctica (Jäderholm 1902)
Hydractinia arge (Clarke 1882)
Hydractinia armata Fraser 1940
Hydractinia bayeri Hirohito 1984
Hydractinia betkensis (Watson 1978)
Hydractinia brachyurae (Hirohito 1988)
Hydractinia californica Torrey 1904
Hydractinia canalifera Millard 1957
Hydractinia carica Bergh 1887
Hydractinia carolinae Fraser 1912
Hydractinia constrictura Huang, Xu & Guo 2015
Hydractinia cryptogonia Hirohito 1988
Hydractinia cytaeiformis Vervoort 2006
Hydractinia denhami (Thornely 1904)
Hydractinia diogenes Millard 1959
Hydractinia disjuncta Fraser 1938
Hydractinia dongshanensis Xu & Huang 2006
Hydractinia dubia (Mayer 1900)
Hydractinia echinata (Fleming 1828)
Hydractinia epidocleensis Leloup 1931
Hydractinia epispongia Fraser 1938
Hydractinia gorgonoides (Nutting 1906)
Hydractinia granulata Hirohito 1988
Hydractinia guangxiensis Huang, Li & Zhang 2010
Hydractinia hancocki Fraser 1938
Hydractinia humilis Bonnevie 1898
Hydractinia inabai (Hirohito 1988)
Hydractinia incerta Van Beneden 1867
Hydractinia ingolfi Kramp 1932
Hydractinia kaffraria Millard 1955
Hydractinia laevispina Fraser 1922
Hydractinia leizhouensis Huang, Zhang & Yang 2020
Hydractinia longispina Fraser 1938
Hydractinia mar (Gasca & Calder 1993)
Hydractinia marsupialia Millard 1975
Hydractinia michaelseni Broch 1914
Hydractinia minoi (Alcock 1892)
Hydractinia moniliformis Huang, Zhong & Zhang 2010
Hydractinia monocarpa Allman 1876
Hydractinia monoon (Hirohito 1988)
Hydractinia multispina Fraser 1938
Hydractinia multitentaculata (Millard 1975)
Hydractinia munita (Calder 2010)
Hydractinia nagaoensis Bouillon, Medel & Peña Cantero 1997
Hydractinia novaezelandiae Schuchert 1996
Hydractinia ocellata (Agassiz & Mayer 1902)
Hydractinia otagoensis (Schuchert 1996)
Hydractinia pacifica Hartlaub 1905
Hydractinia parvispina Hartlaub 1905
Hydractinia paucispinata Vervoort 2006
Hydractinia phialiformis (Antsulevich 1983)
Hydractinia phyllosoma Huang & Xu 2015
Hydractinia piscicola (Komai 1932)
Hydractinia polycarpa Fraser 1938
Hydractinia polyclina L. Agassiz 1860
Hydractinia polytentaculata Xu & Huang 2006
Hydractinia proboscidea (Hincks 1868)
Hydractinia prolifica Fraser 1948
Hydractinia promiscua Galea & Ferry 2015
Hydractinia quadrigemina Fraser 1938
Hydractinia recurvatus Lin, Xu, Huang & Wang 2010
Hydractinia reticulata (Wright 1861)
Hydractinia rugosa Fraser 1938
Hydractinia sandrae (Wedler & Larson 1986)
Hydractinia sarsii (Steenstrup 1850)
Hydractinia siphonis (Stechow 1921)
Hydractinia solitaria Van Beneden 1867
Hydractinia spinipapillaris (Hirohito 1988)
Hydractinia spiralis Goto 1910
Hydractinia symbiolongicarpus Buss & Yund 1989
Hydractinia symbiopollicaris Buss & Yund 1989
Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang 2014
Hydractinia tenuissima Van Beneden 1867
Hydractinia thatcheri Chapman 1931
Hydractinia valens Fraser 1943
Hydractinia vallini Jäderholm 1926
Hydractinia verdi Ritchie 1907
Hydractinia yerii (Iwasa 1934)

Catalogue of Life 7 February 2023

Biota
Animalia
Cnidaria
Hydrozoa
Hydroidolina Collins 2000
Anthoathecata Cornelius 1992
Filifera Kühn 1913
Hydractiniidae L. Agassiz 1862
Hydractinia Van Beneden 1844
Hydractinia uniformis Stampar, Tronolone & Morandini 2006 (this page)
Hydractinia aculeata (Wagner 1833)
Hydractinia aggregata Fraser 1911
Hydractinia altispina Millard 1955
Hydractinia anechinata (Ritchie 1907)
Hydractinia angusta Hartlaub 1904
Hydractinia apicata (Kramp 1959)
Hydractinia arctica (Jäderholm 1902)
Hydractinia arge (Clarke 1882)
Hydractinia armata Fraser 1940
Hydractinia bayeri Hirohito 1984
Hydractinia betkensis (Watson 1978)
Hydractinia brachyurae (Hirohito 1988)
Hydractinia californica Torrey 1904
Hydractinia canalifera Millard 1957
Hydractinia carica Bergh 1887
Hydractinia carolinae Fraser 1912
Hydractinia constrictura Huang, Xu & Guo 2015
Hydractinia cryptogonia Hirohito 1988
Hydractinia cytaeiformis Vervoort 2006
Hydractinia denhami (Thornely 1904)
Hydractinia diogenes Millard 1959
Hydractinia disjuncta Fraser 1938
Hydractinia dongshanensis Xu & Huang 2006
Hydractinia echinata (Fleming 1828)
Hydractinia epidocleensis Leloup 1931
Hydractinia epispongia Fraser 1938
Hydractinia galeai Calder & Watling 2021
Hydractinia gelinea Watson 2015
Hydractinia gorgonoides (Nutting 1906)
Hydractinia granulata Hirohito 1988
Hydractinia guangxiensis Huang, Li & Zhang 2010
Hydractinia hancocki Fraser 1938
Hydractinia inabai (Hirohito 1988)
Hydractinia ingolfi Kramp 1932
Hydractinia kaffraria Millard 1955
Hydractinia laevispina Fraser 1922
Hydractinia leizhouensis Huang, Zhang & Yang 2020
Hydractinia longispina Fraser 1938
Hydractinia mar (Gasca & Calder 1993)
Hydractinia marsupialia Millard 1975
Hydractinia michaelseni Broch 1914
Hydractinia minoi (Alcock 1892)
Hydractinia moniliformis Huang, Zhong & Zhang 2010
Hydractinia monocarpa Allman 1876
Hydractinia monoon (Hirohito 1988)
Hydractinia multispina Fraser 1938
Hydractinia multitentaculata (Millard 1975)
Hydractinia munita (Calder 2010)
Hydractinia nagaoensis Bouillon, Medel & Peña Cantero 1997
Hydractinia novaezelandiae Schuchert 1996
Hydractinia ocellata (Agassiz & Mayer 1902)
Hydractinia otagoensis (Schuchert 1996)
Hydractinia pacifica Hartlaub 1905
Hydractinia parvispina Hartlaub 1905
Hydractinia paucispinata Vervoort 2006
Hydractinia phialiformis (Antsulevich 1983)
Hydractinia phyllosoma Huang & Xu 2015
Hydractinia piscicola (Komai 1932)
Hydractinia polycarpa Fraser 1938
Hydractinia polyclina L. Agassiz 1860
Hydractinia polytentaculata Xu & Huang 2006
Hydractinia proboscidea (Hincks 1868)
Hydractinia prolifica Fraser 1948
Hydractinia promiscua Galea & Ferry 2015
Hydractinia quadrigemina Fraser 1938
Hydractinia recurvatus Lin, Xu, Huang & Wang 2010
Hydractinia rugosa Fraser 1938
Hydractinia sandrae (Wedler & Larson 1986)
Hydractinia sarsii (Steenstrup 1850)
Hydractinia spinipapillaris (Hirohito 1988)
Hydractinia spiralis Goto 1910
Hydractinia symbiolongicarpus Buss & Yund 1989
Hydractinia symbiopollicaris Buss & Yund 1989
Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang 2014
Hydractinia thatcheri Chapman 1931
Hydractinia valens Fraser 1941
Hydractinia vallini Jäderholm 1926
Hydractinia verdi Ritchie 1907
Hydractinia yerii (Iwasa 1934)

EOL Dynamic Hierarchy 1.1

Life
Cellular Organisms
Eukaryota
Opisthokonta
Metazoa
Cnidaria
Hydrozoa
Anthoathecata
Hydractiniidae
Hydractinia
Hydractinia uniformis Stampar, Tronolone & Morandini 2006 (this page)
Hydractinia aculeata (Wagner 1833)
Hydractinia aggregata Fraser 1911
Hydractinia altispina Millard 1955
Hydractinia anechinata (Ritchie 1907)
Hydractinia angusta Hartlaub 1904
Hydractinia apicata (Kramp 1959)
Hydractinia arctica (Jäderholm 1902)
Hydractinia arge (Clarke 1882)
Hydractinia armata Fraser 1940
Hydractinia bayeri Hirohito 1984
Hydractinia betkensis (Watson 1978)
Hydractinia brachyurae (Hirohito 1988)
Hydractinia californica Torrey 1904
Hydractinia canalifera Millard 1957
Hydractinia carica Bergh 1887
Hydractinia carolinae Fraser 1912
Hydractinia constrictura Huang, Xu & Guo 2015
Hydractinia cryptogonia Hirohito 1988
Hydractinia cytaeiformis Vervoort 2006
Hydractinia denhami (Thornely 1904)
Hydractinia diogenes Millard 1959
Hydractinia disjuncta Fraser 1938
Hydractinia dongshanensis Xu & Huang 2006
Hydractinia echinata (Fleming 1828)
Hydractinia epidocleensis Leloup 1931
Hydractinia epispongia Fraser 1938
Hydractinia gorgonoides (Nutting 1906)
Hydractinia granulata Hirohito 1988
Hydractinia guangxiensis Huang, Li & Zhang 2010
Hydractinia hancocki Fraser 1938
Hydractinia inabai (Hirohito 1988)
Hydractinia ingolfi Kramp 1932
Hydractinia kaffraria Millard 1955
Hydractinia laevispina Fraser 1922
Hydractinia longispina Fraser 1938
Hydractinia mar (Gasca & Calder 1993)
Hydractinia marsupialia Millard 1975
Hydractinia michaelseni Broch 1914
Hydractinia minoi (Alcock 1892)
Hydractinia moniliformis Huang, Zhong & Zhang 2010
Hydractinia monocarpa Allman 1876
Hydractinia monoon (Hirohito 1988)
Hydractinia multispina Fraser 1938
Hydractinia multitentaculata (Millard 1975)
Hydractinia munita (Calder 2010)
Hydractinia nagaoensis Bouillon, Medel & Peña Cantero 1997
Hydractinia novaezelandiae Schuchert 1996
Hydractinia ocellata (Agassiz & Mayer 1902)
Hydractinia otagoensis (Schuchert 1996)
Hydractinia pacifica Hartlaub 1905
Hydractinia parvispina Hartlaub 1905
Hydractinia paucispinata Vervoort 2006
Hydractinia phialiformis (Antsulevich 1983)
Hydractinia phyllosoma Huang & Xu 2015
Hydractinia piscicola (Komai 1932)
Hydractinia polycarpa Fraser 1938
Hydractinia polyclina L. Agassiz 1860
Hydractinia polytentaculata Xu & Huang 2006
Hydractinia proboscidea (Hincks 1868)
Hydractinia prolifica Fraser 1948
Hydractinia promiscua Galea & Ferry 2015
Hydractinia quadrigemina Fraser 1938
Hydractinia recurvatus Lin, Xu, Huang & Wang 2010
Hydractinia rugosa Fraser 1938
Hydractinia sandrae (Wedler & Larson 1986)
Hydractinia sarsii (Steenstrup 1850)
Hydractinia spinipapillaris (Hirohito 1988)
Hydractinia spiralis Goto 1910
Hydractinia symbiolongicarpus Buss & Yund 1989
Hydractinia symbiopollicaris Buss & Yund 1989
Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang 2014
Hydractinia thatcheri Chapman 1931
Hydractinia valens Fraser 1943
Hydractinia vallini Jäderholm 1926
Hydractinia verdi Ritchie 1907
Hydractinia yerii (Iwasa 1934)

GBIF classification

Animalia
Cnidaria
Hydrozoa
Anthoathecata
Hydractiniidae
Hydractinia Van Beneden 1844
Hydractinia uniformis Stampar, Tronolone & Morandini 2006 (this page)
Cionistes reticulata Wright 1861
Hydractinia aculeata (Wagner 1833)
Hydractinia aggregata Fraser 1911
Hydractinia altispina Millard 1955
Hydractinia americana (Edwards 1972)
Hydractinia anechinata (Ritchie 1907)
Hydractinia angusta Hartlaub 1904
Hydractinia apicata (Kramp 1959)
Hydractinia arborescens Carter 1878
Hydractinia arctica (Jäderholm 1902)
Hydractinia areaolata Alder 1862
Hydractinia arge (Clarke 1882)
Hydractinia armata Fraser 1940
Hydractinia bayeri Hirohito 1984
Hydractinia betkensis (Watson 1978)
Hydractinia brachyurae (Hirohito 1988)
Hydractinia californica Torrey 1904
Hydractinia canalifera Millard 1957
Hydractinia carica Bergh 1887
Hydractinia carolinae Fraser 1912
Hydractinia constrictura
Hydractinia cretacea Fischer 1867
Hydractinia cryptogonia Hirohito 1988
Hydractinia cytaeiformis Vervoort 2006
Hydractinia denhami (Thornely 1904)
Hydractinia diogenes Millard 1959
Hydractinia disjuncta Fraser 1938
Hydractinia dongshanensis Xu & Huang 2006
Hydractinia dubia (Mayer 1900)
Hydractinia echinata (Fleming 1828)
Hydractinia epidocleensis Leloup 1931
Hydractinia epispongia Fraser 1938
Hydractinia gorgonoides (Nutting 1906)
Hydractinia granulata Hirohito 1988
Hydractinia guangxiensis
Hydractinia hancocki Fraser 1938
Hydractinia hebetispina Buchanan
Hydractinia inabai (Hirohito 1988)
Hydractinia incerta Van Beneden 1867
Hydractinia ingolfi Kramp 1932
Hydractinia kaffaria Millard
Hydractinia kaffraria Millard 1955
Hydractinia laevispina Fraser 1922
Hydractinia longispina Fraser 1938
Hydractinia mar (Gasca & Calder 1993)
Hydractinia marsupialia Millard 1975
Hydractinia michaelseni Broch 1914
Hydractinia minoi (Alcock 1892)
Hydractinia moniliformis Huang, Zhong & Zhang 2010
Hydractinia monocarpa Allman 1876
Hydractinia monoon (Hirohito 1988)
Hydractinia multispina Fraser 1938
Hydractinia multispinosa Ulrich 1904
Hydractinia multitentaculata (Millard 1975)
Hydractinia munita (Calder 2010)
Hydractinia nagaoensis Bouillon, Medel & Peña Cantero 1997
Hydractinia novaezelandiae Schuchert 1996
Hydractinia ocellata (Agassiz & Mayer 1902)
Hydractinia otagoensis (Schuchert 1996)
Hydractinia pacifica Hartlaub 1905
Hydractinia parvispina Hartlaub 1905
Hydractinia paucispinata Vervoort 2006
Hydractinia phialiformis (Antsulevich 1983)
Hydractinia phyllosoma
Hydractinia piscicola (Komai 1932)
Hydractinia polycarpa Fraser 1938
Hydractinia polyclina L. Agassiz 1860
Hydractinia polytentaculata Xu & Huang 2006
Hydractinia proboscidea (Hincks 1868)
Hydractinia prolifica Fraser 1948
Hydractinia promiscua Galea & Ferry 2015
Hydractinia quadrigemina Fraser 1938
Hydractinia recurvatus Lin, Xu, Huang & Wang 2010
Hydractinia rugosa Fraser 1938
Hydractinia sandrae (Wedler & Larson 1986)
Hydractinia sarsii (Steenstrup 1850)
Hydractinia siphonis (Stechow 1921)
Hydractinia solitaria Van Beneden 1867
Hydractinia spinipapillaris (Hirohito 1988)
Hydractinia spiralis Goto 1910
Hydractinia symbiolongicarpus Buss & Yund 1989
Hydractinia symbiopollicaris Buss & Yund 1989
Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang 2014
Hydractinia tenuissima Van Beneden 1867
Hydractinia thatcheri Chapman 1931
Hydractinia valens Fraser 1943
Hydractinia vallini Jäderholm 1926
Hydractinia vallipi Jaderholm 1926
Hydractinia verde Ritchie
Hydractinia verdi Ritchie 1907
Hydractinia yerii (Iwasa 1934)

wikidata_hierarchy tar gz

Biota
Eukaryota
Unikonta
Opisthokonta
Holozoa
Filozoa
Apoikozoa
Animalia
Eumetazoa
Radiata
Cnidaria
Medusozoa
Hydrozoa
Hydroidolina
Anthoathecata
Filifera
Hydractiniidae
Hydractinia
Hydractinia uniformis (this page)
Hydractinia aculeata
Hydractinia aggregata
Hydractinia allmani
Hydractinia altispina
Hydractinia americana
Hydractinia anechinata
Hydractinia angusta
Hydractinia antonii
Hydractinia apicata
Hydractinia arctica
Hydractinia areolata
Hydractinia arge
Hydractinia armata
Hydractinia australis
Hydractinia bayeri
Hydractinia bella
Hydractinia betkensis
Hydractinia borealis
Hydractinia brachyurae
Hydractinia californica
Hydractinia canalifera
Hydractinia carcinicola
Hydractinia carica
Hydractinia carnea
Hydractinia carolinae
Hydractinia conchicola
Hydractinia cryptogonia
Hydractinia cytaeiformis
Hydractinia dendritica
Hydractinia denhami
Hydractinia diogenes
Hydractinia disjuncta
Hydractinia dongshanensis
Hydractinia echinata
Hydractinia epiconcha
Hydractinia epidocleensis
Hydractinia epispongia
Hydractinia exigua
Hydractinia fucicola
Hydractinia granulata
Hydractinia grisea
Hydractinia guangxiensis
Hydractinia hancocki
Hydractinia hayamaensis
Hydractinia hooperi
Hydractinia humilis
Hydractinia inabai
Hydractinia incerta
Hydractinia inermis
Hydractinia kaffraria
Hydractinia lactea
Hydractinia laevispina
Hydractinia leizhouensis
Hydractinia longispina
Hydractinia mar
Hydractinia marsupialia
Hydractinia meteoris
Hydractinia michaelseni
Hydractinia milleri
Hydractinia minoi
Hydractinia misakiensis
Hydractinia moniliformis
Hydractinia monocarpa
Hydractinia monoon
Hydractinia multigranosi
Hydractinia multispina
Hydractinia multitentaculata
Hydractinia munita
Hydractinia nagaoensis
Hydractinia novaezelandiae
Hydractinia ocellata
Hydractinia otagoensis
Hydractinia pacifica
Hydractinia parvispina
Hydractinia paucispinata
Hydractinia phialiformis
Hydractinia piscicola
Hydractinia polycarpa
Hydractinia polyclina
Hydractinia polytentaculata
Hydractinia proboscidea
Hydractinia prolifica
Hydractinia pruvoti
Hydractinia quadrigemina
Hydractinia recurvatus
Hydractinia rosea
Hydractinia rubricata
Hydractinia rugosa
Hydractinia serrata
Hydractinia sodalis
Hydractinia solitaria
Hydractinia symbiolongicarpus
Hydractinia tenuis
Hydractinia tenuissima
Hydractinia uchidai
Hydractinia vacuolata
Hydractinia valens
Hydractinia vallini
Hydractinia verdi
Hydractinia yerii
29 additional siblings truncated for brevity.
See the resource file for a full list.

World Register of Marine Species

Animalia
Cnidaria
Hydrozoa
Anthoathecata
Hydractiniidae
Hydractinia
Hydractinia uniformis Stampar, Tronolone & Morandini 2006 (this page)
Hydractinia aculeata (Wagner 1833)
Hydractinia aggregata Fraser 1911
Hydractinia altispina Millard 1955
Hydractinia anechinata (Ritchie 1907)
Hydractinia angusta Hartlaub 1904
Hydractinia apicata (Kramp 1959)
Hydractinia arctica (Jäderholm 1902)
Hydractinia arge (Clarke 1882)
Hydractinia armata Fraser 1940
Hydractinia bayeri Hirohito 1984
Hydractinia betkensis (Watson 1978)
Hydractinia brachyurae (Hirohito 1988)
Hydractinia californica Torrey 1904
Hydractinia canalifera Millard 1957
Hydractinia carica Bergh 1887
Hydractinia carolinae Fraser 1912
Hydractinia constrictura Huang, Xu & Guo 2015
Hydractinia cryptogonia Hirohito 1988
Hydractinia cytaeiformis Vervoort 2006
Hydractinia denhami (Thornely 1904)
Hydractinia diogenes Millard 1959
Hydractinia disjuncta Fraser 1938
Hydractinia dongshanensis Xu & Huang 2006
Hydractinia echinata (Fleming 1828)
Hydractinia epidocleensis Leloup 1931
Hydractinia epispongia Fraser 1938
Hydractinia galeai Calder & Watling 2021
Hydractinia gelinea Watson 2015
Hydractinia gorgonoides (Nutting 1906)
Hydractinia granulata Hirohito 1988
Hydractinia guangxiensis Huang, Li & Zhang 2010
Hydractinia hancocki Fraser 1938
Hydractinia inabai (Hirohito 1988)
Hydractinia ingolfi Kramp 1932
Hydractinia kaffraria Millard 1955
Hydractinia laevispina Fraser 1922
Hydractinia leizhouensis Huang, Zhang & Yang 2020
Hydractinia longispina Fraser 1938
Hydractinia mar (Gasca & Calder 1993)
Hydractinia marsupialia Millard 1975
Hydractinia michaelseni Broch 1914
Hydractinia minoi (Alcock 1892)
Hydractinia moniliformis Huang, Zhong & Zhang 2010
Hydractinia monocarpa Allman 1876
Hydractinia monoon (Hirohito 1988)
Hydractinia multispina Fraser 1938
Hydractinia multitentaculata (Millard 1975)
Hydractinia munita (Calder 2010)
Hydractinia nagaoensis Bouillon, Medel & Peña Cantero 1997
Hydractinia novaezelandiae Schuchert 1996
Hydractinia ocellata (Agassiz & Mayer 1902)
Hydractinia otagoensis (Schuchert 1996)
Hydractinia pacifica Hartlaub 1905
Hydractinia parvispina Hartlaub 1905
Hydractinia paucispinata Vervoort 2006
Hydractinia phialiformis (Antsulevich 1983)
Hydractinia phyllosoma Huang & Xu 2015
Hydractinia piscicola (Komai 1932)
Hydractinia polycarpa Fraser 1938
Hydractinia polyclina L. Agassiz 1860
Hydractinia polytentaculata Xu & Huang 2006
Hydractinia proboscidea (Hincks 1868)
Hydractinia prolifica Fraser 1948
Hydractinia promiscua Galea & Ferry 2015
Hydractinia quadrigemina Fraser 1938
Hydractinia recurvatus Lin, Xu, Huang & Wang 2010
Hydractinia rugosa Fraser 1938
Hydractinia sandrae (Wedler & Larson 1986)
Hydractinia sarsii (Steenstrup 1850)
Hydractinia spinipapillaris (Hirohito 1988)
Hydractinia spiralis Goto 1910
Hydractinia symbiolongicarpus Buss & Yund 1989
Hydractinia symbiopollicaris Buss & Yund 1989
Hydractinia taiwanensis Xu, Huang, Lin, Guo & Wang 2014
Hydractinia thatcheri Chapman 1931
Hydractinia valens Fraser 1941
Hydractinia vallini Jäderholm 1926
Hydractinia verdi Ritchie 1907
Hydractinia yerii (Iwasa 1934)
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