Ardissonula G. De Toni, 1936 genus accepted

Benzaitenia Yendo, 1913 genus accepted

Boergeseniella Kylin, 1956 genus accepted

Bostrychia Montagne in Sagra, 1842 genus accepted

Bostrychiocolax Zuccarello & J.A.West, 1994 genus accepted

Bosworthia C.D. Walcott, 1919 genus accepted

Brongniartella Bory de Saint-Vincent, 1822 genus accepted

Bryocladia F.Schmitz, 1897 genus accepted

Carpocaulon Kützing, 1843 genus accepted

Harveyella F.Schmitz & Reinke, 1889 genus accepted

Herpopteros Falkenberg in Engler & Prantl, 1897 genus accepted

Herposiphonia Nägeli, 1846 genus accepted

Heterocladia Decaisne, 1841 genus accepted

Chamaethamnion Falkenberg in Engler & Prantl, 1897 genus accepted

Chondria C.Agardh, 1817 genus accepted

Chondrophycus (J. Tokida & Y. Saito) D.J. Garbary & J.T. Harper, 1998 genus accepted

Choreocolax Reinsch, 1875 genus accepted

Cladhymenia Harvey, 1845 genus accepted

Cladurus Falkenberg in Engler & Prantl, 1897 genus accepted

Alsidium C.Agardh, 1827 genus accepted

Amansia J.V.F. Lamouroux, 1809 genus accepted

Aneurianna L.E. Phillips, 2006 genus accepted

Antarctocolax Skottsberg, 1953 genus accepted

Microcolax F.Schmitz, 1897 genus accepted

Micropeuce J.Agardh, 1899 genus accepted

Nanopera S.M. Wilson & G.T. Kraft, 2000 genus accepted

Acanthophora J.V.F. Lamouroux, 1813 genus accepted

Amplisiphonia Hollenberg, 1939 genus accepted

Beringiella M.J. Wynne, 1980 genus accepted

Chiracanthia Falkenberg in Engler & Prantl, 1897 genus accepted

Coeloclonium J.Agardh, 1876 genus accepted

Corynecladia J.Agardh, 1876 genus accepted

Neosiphonia M.-S. Kim & I.K. Lee, 1999 genus accepted

Erythrocystis J.Agardh, 1876 genus accepted

Fernandosiphonia Levring in Skottsberg, 1941 genus accepted

Halopithys Kützing, 1843 genus accepted

Herposiphoniella Womersley, 2003 genus accepted

Helminthochorton Zanardini, 1843 genus provisionally accepted

Kuetzingia Sonder, 1845 genus accepted

Leveillea Decaisne, 1839 genus accepted

Levringiella Kylin, 1956 genus accepted

Leptosiphonia Kylin, 1956 genus accepted

Leveillia W.H. Harvey, 1849 genus accepted

Lophosiphonia Falkenberg in Engler & Prantl, 1897 genus accepted

Lophurella F.Schmitz, 1897 genus accepted

Erythrostachys J.Agardh ex Jean White, 1912 genus accepted

Enantiocladia Falkenberg in Engler & Prantl, 1897 genus accepted

Enelittosiphonia Segi, 1949 genus accepted

Girodia T.G. Lestiboudois, 1827 genus accepted

Haplodasya Falkenberg in Engler & Prantl, 1897 genus accepted

Hawaiia Hollenberg, 1967 genus accepted

Grammalia B.C. Dumoriter, 1829 genus accepted

Heterostroma G.T. Kraft & M.J. Wynne, 1992 genus accepted

Helminthochortos Link, 1833 genus provisionally accepted

Lampisiphonia H.-G. Choi, P. Diaz Tapia & I. Bárbara in Bárbara, Choi, Secilla, Díaz-Tapia, Gorostiaga, Seo, Jung & Berecibar, 2013 genus accepted

Laurenciella V. Cassano, M.C. Gil-Rodrüguez, A. Sentües, J. Düaz-Larrea, M.C. Oliveira & M.T. Fujii in Cassano, Oliveira, Gil-Rodríguez, Sentíes, Díaz-Larrea & Fujii, 2012 genus accepted

Murrayella F.Schmitz, 1893 genus accepted

Neorhodomela Masuda, 1982 genus accepted

Neotenophycus G.T. Kraft & I.A. Abbott, 2002 genus accepted

Onychocolax M.A. Pocock, 1956 genus accepted

Orcasia Kylin, 1941 genus provisionally accepted

Odonthalia Lyngbye, 1819 genus accepted

Osmundaria J.V.F. Lamouroux, 1813 genus accepted

Osmundea Stackhouse, 1809 genus accepted

Polyostea Ruprecht, 1850 genus accepted

Polyochetum Chevallier, 1836 genus accepted

Pollexfenia Harvey, 1844 genus accepted

Polysiphonia Greville, 1823 genus accepted

Polyzonia Suhr, 1834 genus accepted

Neurymenia J.Agardh, 1863 genus accepted

Wahpia C.D. Walcott, 1919 genus accepted

Rodriguezella F.Schmitz, 1895 genus accepted

Stromatocarpus Falkenberg in Engler & Prantl, 1897 genus accepted

Yuzurua (Nam, 1999) J. Martin-Lescanne in Martin-Lescanne, Rousseau, De Reviers, Payri, Couloux, Cruaud & Le Gall, 2010 genus accepted

Holotrichia F.Schmitz, 1897 genus accepted

Husseya J.Agardh, 1901 genus accepted

Hutchinsia C.Agardh, 1817 genus provisionally accepted

Janczewskia Solms-Laubach, 1877 genus accepted

Jantinella Kylin, 1941 genus accepted

Kentrophora S.M. Wilson & G.T. Kraft in R.J.F. Henderson, S.M. Wilson & G.T. Kraft, 2001 genus accepted

Kintarosiphonia S. Uwai & M. Masuda, 1999 genus accepted

Laurencia J.V.F. Lamouroux, 1813 genus accepted

Laurenciocolax A.D. Zinova & L.P. Perestenko, 1964 genus accepted

Leachiella Kugrens, 1982 genus accepted

Lembergia Saenger, 1971 genus accepted

Lenormandia Sonder, 1845 genus accepted

Lophocladia F.Schmitz, 1893 genus accepted

Cliftonaea (Harvey) Harvey, 1863 genus accepted

Colacopsis De Toni, 1903 genus accepted

Ctenosiphonia Falkenberg in Engler & Prantl, 1897 genus accepted

Dalyia C.D. Walcott, 1919 genus accepted

Dasyclonia J.E. Gray, 1864 genus accepted

Dasyclonium J.Agardh, 1894 genus accepted

Dawsoniella Hollenberg, 1967 genus accepted

Dawsoniocolax A.B. Joly & Yamaguishi-Tomita, 1970 genus accepted

Dictyomenia Greville, 1830 genus accepted

Digenea C.Agardh, 1822 genus accepted

Digeneopsis Simons, 1970 genus accepted

Diplocladia Kylin, 1956 genus accepted

Dipterocolax J. Morrill, 1977 genus accepted

Dipterosiphonia K.J.F. Schmitz & Falkenberg in Engler & Prantl, 1897 genus accepted

Ditria Hollenberg, 1967 genus accepted

Dolichoscelis J.Agardh, 1897 genus accepted

Doxodasya (F.Schmitz) Falkenberg, 1901 genus accepted

Echinophycus Huisman, 2001 genus accepted

Echinosporangium Kylin, 1956 genus accepted

Echinothamnion Kylin, 1956 genus accepted

Endosiphonia Zanardini, 1878 genus accepted

Epiglossum Kützing, 1849 genus accepted

Lophothalia Kützing, 1849 genus accepted

Lophura Kützing, 1843 genus provisionally accepted

Melanamansia R.E. Norris, 1988 genus accepted

Melanothamnus Bornet & Falkenberg in Falkenberg, 1901 genus accepted

Oligocladella P.C. Silva, 1996 genus accepted

Oligosiphonia J.E. Gray, 1864 genus accepted

Ophidocladus Falkenberg in Engler & Prantl, 1897 genus accepted

Pachychaeta Kützing, 1862 genus accepted

Palisada K.W. Nam, 2007 genus accepted

Exophyllum Weber-van Bosse, 1911 genus accepted

Gonatogenia J.Agardh, 1896 genus accepted

Grammitella P. Crouan & H. Crouan, 1848 genus accepted

Gredgaria Womersley, 2003 genus accepted

Ohelopapa F. Rousseau, J. Martin-Lescanne, C. Payri & L. Le Gall in Rousseau et al., 2017 genus accepted

Symphyocladiella D.E. Bustamante, B.Y. Won & T.O. Cho in Bustamante, Won, Lindstrom & Cho, 2019 genus accepted

Wilsonosiphonia D.E. Bustamante, B.Y. Won & T.O. Cho in Bustamante et al., 2017 genus accepted

Neochondria S. Sutti, M. Tani, Y. Yamagishi, T. Abe & K. Kogame in Sutti et al., 2018 genus accepted

Physcophora Kützing, 1843 genus provisionally accepted

Picconiella G. De Toni, 1936 genus accepted

Pithyopsis Falkenberg in Engler & Prantl, 1897 genus provisionally accepted

Pityophykos Papenfuss, 1958 genus accepted

Placophora J.Agardh, 1863 genus accepted

Pleurostichidium Heydrich, 1893 genus accepted

Protokuetzingia Falkenberg in Engler & Prantl, 1897 genus accepted

Pseudoendosiphonia Weber-van Bosse, 1913 genus accepted

Pterochondria Hollenberg, 1942 genus accepted

Pterosiphonia Falkenberg in Engler & Prantl, 1897 genus accepted

Pterosiphoniella E.Y. Dawson, 1963 genus accepted

Pycnothamnion P.J.L.Dangeard, 1953 genus accepted

Stichothamnion Børgesen, 1930 genus accepted

Stictosiphonia J.D. Hooker & W.H. Harvey in J.D. Hooker, 1847 genus accepted

Streblocladia F.Schmitz, 1897 genus accepted

Symphyocladia Falkenberg in Engler & Prantl, 1897 genus accepted

Symphyocolax M.S. Kim in Kim & Cho, 2010 genus accepted

Tayloriella Kylin, 1938 genus accepted

Tiparraria Womersley, 2003 genus accepted

Tolypiocladia F.Schmitz, 1897 genus accepted

Trichidium J.M. Noble & G.T. Kraft, 1984 genus accepted

Trigenea Sonder, 1845 genus accepted

Tylocolax F.Schmitz, 1897 genus accepted

Ululania K.E. Apt & K.E. Schlech, 1998 genus accepted

Veleroa E.Y. Dawson, 1944 genus accepted

Vidalia J.V.F. Lamouroux ex J.G. Agardh, 1863 genus accepted

Waldoia W.R. Taylor, 1962 genus accepted

Waputikia C.D. Walcott, 1919 genus accepted

Wilsonaea F.Schmitz, 1893 genus accepted

Womersleyella Hollenberg, 1967 genus accepted

Wrightiella F.Schmitz, 1893 genus accepted

Rhodolachne M.J. Wynne, 1970 genus accepted

Rhodomela C.Agardh, 1822 genus accepted

Rhodomelopsis Pocock, 1953 genus accepted

Rytiphlaea C.Agardh, 1817 genus accepted

Rytiphloea C.A. Agardh, 1817 genus accepted

Schizochlaenion M.J. Wynne & R.E. Norris, 1982 genus accepted

Sonderella F.Schmitz, 1897 genus accepted

Spirhymenia Decaisne, 1841 genus accepted

Spirocladia Børgesen, 1933 genus accepted

Periphykon Weber-van Bosse, 1929 genus accepted

Perrinia Womersley, 2003 genus accepted

Phaeocolax Hollenberg, 1967 genus accepted

Spirophycus A.J.K. Millar, 2000 genus accepted

Sporoglossum Kylin, 1919 genus accepted

Meridiocolax J. Morrill, 1976 genus accepted

Metamorphe Falkenberg in Engler & Prantl, 1897 genus accepted

Abbottella Hollenberg, 1967 genus accepted

Acrocystis Zanardini, 1872 genus accepted

Adamsiella L.E. Phillips & W.A. Nelson in L.E. Phillips, 2002 genus accepted

Aiolocolax M.A. Pocock, 1956 genus accepted

Alleynea Womersley, 2003 genus accepted

Aphanocladia Falkenberg in Engler & Prantl, 1897 genus accepted