Crassa C.F.D.Gurgel, J.N.Norris & S.Fredericq, 2018 genus doubtful

Crassiphycus Guiry, J.N.Norris, Fredericq & Gurgel, 2018 genus accepted

Flagellaria Stackhouse, 1809 genus synonym

Curdiaea Kützing, 1869 genus doubtful

Polycavernosa C.F.Chang & B.M.Xia, 1963 genus synonym

Congracilaria H.Yamamoto, 1986 genus doubtful

Gracilariophila Setchell & H.L.Wilson, 1910 genus accepted

Sarcocladia Harvey, 1855 genus synonym

Corallopsis Greville, 1830 genus synonym

Curdiea Harvey, 1855 genus accepted

Ceramianthemum V.Donati ex S.Léman, 1817 genus synonym

Gracilaria Greville, 1830 genus accepted

Hydropuntia Montagne, 1842 genus accepted

Melanthalia Montagne, 1843 genus accepted

Gracilariopsis E.Y.Dawson, 1949 genus accepted

Tyleiophora J.Agardh, 1890 genus doubtful

Plocaria Nees, 1820 genus synonym

Agarophyton C.F.D.Gurgel, J.N.Norris & S.Fredericq, 2018 genus accepted