Coelothrix Børgesen, 1920 genus accepted

Dictyothamnion A.J.K.Millar, 1990 genus accepted

Champiocolax Bula-Meyer, 1985 genus doubtful

Sedoidea Stackhouse, 1809 genus synonym

Gastridium Lyngbye, 1819 genus synonym

Chylocladia Greville, 1833 genus accepted

Coeloseira Hollenberg, 1941 genus synonym

Champia Desvaux, 1809 genus accepted

Mertensia Thunberg ex Roth, 1806 genus synonym

Gastroclonium Kützing, 1843 genus accepted

Neogastroclonium L.Le Gall, J.L.Dalen & G.W.Saunders, 2008 genus accepted

Gastrophycus Link, 1833 genus doubtful

Corinaldia Trevisan, 1843 genus doubtful

Kaliformis Stackhouse, 1809 genus doubtful

Kaliformia Stackhouse, 1816 genus doubtful

Acrothamnion genus doubtful