![[Small Alcyonidium]](alcymyt.gif)
Alcyonidioides mytiliType species: Ulva diaphana Hudson, 1778
Alternatively, from d'Hondt, 2001: Fucus gelatinosus Hudson, 1762 (not Linnaeus)
This genus includes the species:
| Alcyonidium albescens | Winston & Key, 1999 | Recent | USA (N. Carolina) |
| Alcyonidium albidum | Alder, 1857 | Recent | Europe |
| Alcyonidium androsovae | d'Hondt, 1983 | Recent | Antarctica |
| Alcyonidium anglei | d'Hondt & Goyffon, 1991 | Recent | |
| Alcyonidium antarcticum | Waters, 1904 | Recent | Antarctica |
| Alcyonidium argyllaceum | Castric-Fey, 1972 | Recent | France |
| Alcyonidium australe | d'Hondt & Moyano, 1979 | Recent | Chile (Magellan Str.) |
| Alcyonidium candidum | Ryland, 1963 | Recent | Norway |
| Alcyonidium capronae | Winston & Håkansson, 1986 | Recent | Florida |
| Alcyonidium cellarioides | Calvet, 1900 | Recent | Mediterranean |
| Alcyonidium chondroides | O'Donoghue & Watteville, 1937 | Recent | S. Africa |
| Alcyonidium columbianum | O'Donoghue & O'Donoghue, 1926 | Recent | W. Canada |
| Alcyonidium condylocinereum | Porter, 2004 | Recent | England, Belgium |
| Alcyonidium diaphanum | (Hudson, 1778) | Recent | Europe |
| Alcyonidium diaphanum alcilobatum | d'Hondt & Mawatari, 1986 | Recent | Japan |
| Alcyonidium disciforme | Smitt, 1872 | Recent | Arctic |
| Alcyonidium duplex | Prouho, 1892 | Recent | Mediterranean |
| Alcyonidium effusum | Norman, 1909 | Recent | Arctic |
| Alcyonidium eightsi | Winston & Hayward, 1994 | Recent | Antarctic |
| Alcyonidium enteromorpha | Soule, 1951 | Recent | Alaska |
| Alcyonidium epispiculum | Porter & Hayward, 2004 | Recent | Antarctica |
| Alcyonidium erectum | Silén, 1942 | Recent | Japan |
| Alcyonidium excavatum | Hincks, 1880 | Recent | Barents Sea |
| Alcyonidium flabelliforme | Kirkpatrick, 1902 | Recent | Antarctic |
| Alcyonidium flustroides | Busk, 1886 | Recent | S. Africa |
| Alcyonidium foliaceum | Silén, 1942 | Recent | Japan |
| Alcyonidium gelatinosum | (Linnaeus, 1761) | Recent | Europe |
| Alcyonidium gelatinosum anderssoni | Abrikosov, 1932 | Recent | Arctic |
| Alcyonidium gelatinosum cookae | d'Hondt, 1983 | Recent | W. Africa |
| Alcyonidium gelatinosum diaphanum | (Farre, 1837) | Recent | Arctic |
| Alcyonidium hauffi | Marcus, 1939 | Recent | S. America |
| Alcyonidium hirsutum | (Fleming, 1828) | Recent | Europe. Arctic |
| Alcyonidium hydrocoalitum | Porter, 2004 | Recent | Wales |
| Alcyonidium irregulare | Kluge, 1962 | Recent | Arctic |
| Alcyonidium kermadecense | Gordon, 1984 | Recent | SW Pacific |
| Alcyonidium mamillatum | Alder, 1857 | Recent | Atlantic |
| Alcyonidium mamillatum erectum | Andersson, 1902 | Recent | Arctic |
| Alcyonidium multigemmatum | Gordon, 1986 | Recent | New Zealand |
| Alcyonidium nanum | Silén, 1942 | Recent | Japan |
| Alcyonidium nipponicum | d'Hondt & Mawatari, 1986 | Recent | Japan |
| Alcyonidium nodosum | O'Donoghue & Watteville, 1944 | Recent | S. Africa, Chile |
| Alcyonidium pachydermatum | Kluge, 1962 | Recent | Arctic |
| Alcyonidium papillatum | O'Donoghue, 1924 | Recent | S. Africa |
| Alcyonidium parasiticum | (Fleming, 1828) | Recent | Europe |
| Alcyonidium pedunculatum | Robertson, 1902 | Recent | Northeast Pacific |
| Alcyonidium pelagosphaerum | Porter & Hayward, 2004 | Recent | Antarctica |
| Alcyonidium polyoum | (Hassall, 1841) | Recent | Europe |
| Alcyonidium polypylum | Marcus, 1941 | Recent | S. America |
| Alcyonidium radicellatum | Kluge, 1946 | Recent | Arctic |
| Alcyonidium reticulum Now = A. gelatinosum |
Ryland & Porter, 2000 | Recent | SW. Britain |
| Alcyonidium rhomboidale | O'Donoghue, 1924 | Recent | S. Africa |
| Alcyonidium rugosum | Silén, 1942 | Recent | W. Pacific |
| Alcyonidium sagamianum | Mawatari, 1953 | Recent | Japan |
| Alcyonidium sanguineum | Cook, 1985 | Recent | W. Africa |
| Alcyonidium scolecoideum | Porter & Hayward, 2004 | Recent | Chile |
| Alcyonidium shizuoi | d'Hondt & Mawatari, 1986 | Recent | Japan |
| Alcyonidium simulatum | Porter & Hayward, 2004 | Recent | S. Atlantic |
| Alcyonidium variegatum | Prouho, 1892 | Recent | Mediterranean |
| Alcyonidium verrilli | Osburn, 1912 | Recent | Northwest Atlantic |
Alcyonidium disciforme at Svalbard (photo by Piotr Kuklinski.)
Alcyonidium diaphanum
at Encyclopedia of Marine Life
of Britain and Ireland, Ulster Museum.
Alcyonidium hirsutum
at Encyclopedia of Marine Life
of Britain and Ireland, Ulster Museum.
Alcyonidium condylocinereum page at Cryptosula - marine and estuarine organisms of The Netherlands (Marco Faasse).
Alcyonidium gelatinosum page at Cryptosula - marine and estuarine organisms of The Netherlands (Marco Faasse).
Alcyonidium hirsutum page at Cryptosula - marine and estuarine organisms of The Netherlands (Marco Faasse).
Alcyonidium hydrocoalitum page at Cryptosula - marine and estuarine organisms of The Netherlands (Marco Faasse).
Alcyonidium polyoum page at Cryptosula - marine and estuarine organisms of The Netherlands (Marco Faasse).
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