• Agardhina prototypus Nardo
• Antarcticophyllum aequabile (Foslie) M.L. Mendoza, 1976 accepted as Clathromorphum obteculum (Foslie) Adey, 1970
• Antarcticophyllum subantarcticum (Foslie) Mendoza, 1976 accepted as Lithophyllum subantarcticum (Foslie) Foslie, 1907
• Apora polymorpha Gunnerus, 1768 accepted as Phymatolithon calcareum (Pallas) W.H. Adey & D.L. McKibbin, 1970
• Austrolithon intumescens A.S. Harvey & Woelkerling, 1995
• Boreolithon van-heurckii (Heydrich) A.S. Harvey & Woelkerling, 1995
• Chaetolithon deformans (Solms-Laubach) Foslie, 1898 accepted as Choreonema thuretii (Bornet) F. Schmitz, 1889
• Choreonema notarisii (Dufour) Foslie, 1898 accepted as Neogoniolithon brassica-florida (Harvey) Setchell & L.R. Mason, 1943
• Choreonema thuretii (Bornet) F. Schmitz, 1889
• Clathromorphum circumscriptum (Strömfelt) Foslie, 1898
• Clathromorphum coalescens (Foslie) Foslie, 1898 accepted as Clathromorphum compactum (Kjellman) Foslie, 1898
• Clathromorphum compactum (Kjellman) Foslie, 1898
• Clathromorphum evanescens (Foslie) Foslie, 1898 accepted as Clathromorphum circumscriptum (Strömfelt) Foslie, 1898
• Clathromorphum lemoineanum M.L. Mendoza & J. Cabioch, 1985 accepted as Clathromorphum obteculum (Foslie) Adey, 1970
• Clathromorphum loculosum (Kjellman) Foslie, 1898
• Clathromorphum nereostratum Lebednik, 1977
• Clathromorphum obteculum (Foslie) Adey, 1970
• Clathromorphum parcum (Setchell & Foslie) W.H. Adey, 1970
• Clathromorphum reclinatum (Foslie) W.H. Adey, 1970
• Clathromorphum testaceum (Foslie) Foslie, 1898 accepted as Clathromorphum compactum (Kjellman) Foslie, 1898
• Clathromorphum tubiforme Y.M. Chamberlain, R.E. Norris, D.W. Keats & Maneveldt, 1995
• Clathromorphum variabile M.L. Mendoza & S. Molina
• Eleutherospora polymorpha (Linnaeus) Heydrich, 1900 accepted as Phymatolithon purpureum (P.L. Crouan & H.M. Crouan) Woelkerling & L.M. Irvine, 1986
• Epilithon corticiforme (Kützing) Heydrich, 1908 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Epilithon galapaganse (Foslie) Foslie accepted as Melobesia galapagensis (Foslie) W.R. Taylor, 1945
• Epilithon inaequilateralum (Solms-Laubach) Schiffner, 1916
• Epilithon marginatum (Satch. & Foslie)
• Epilithon mediocre (Foslie)Foslie
• Epilithon membranaceum (Esper) Heydrich, 1897 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Epilithon nitidum (Johnson) J.P. Beckmann & R. Beckmann
• Epilithon pustulatum (J.V. Lamouroux) M. Lemoine, 1921 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Epilithon rosanoffii (Foslie) Foslie, 1909 accepted as Melobesia rosanoffii (Foslie) Lemoine, 1912
• Epilithon saipanense (Johnson) J.P. Beckmann & R. Beckmann, 1966
• Epilithon vallentinae Lemoine, 1915
• Epilithon vanheurckii (Heydrich) Heydrich, 1905 accepted as Boreolithon van-heurckii (Heydrich) A.S. Harvey & Woelkerling, 1995
• Epulo multipedes R.A. Townsend & Huisman, 2004
• Exilicrusta parva Y.M. Chamberlain, 1992
• Hapalidium callithamnioides P.L. Crouan & H.M. Crouan, 1859 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Hapalidium coccineum P.L. Crouan & H.M. Crouan, 1859 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Hapalidium confervicola (Kützing) Areschoug, 1852 accepted as Pneophyllum confervicola (Kützing) Y.M. Chamberlain, 1983
• Hapalidium confervoides (Kützing) P.L. Crouan & H.M. Crouan, 1867 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Hapalidium hildebrandtioides P.L. Crouan & H.M. Crouan, 1867 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Hapalidium phyllactidium Kützing, 1849 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Hapalidium roseolum Kützing, 1843 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Hapalidium roseum Kützing ex Areschoug, 1852 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Hapalidium zonale P.L. Crouan & H.M. Crouan, 1859 accepted as Pneophyllum zonale (P.L. Crouan & H.M. Crouan) Y.M. Chamberlain, 1983
• Kvaleya epilaeve Adey & Sperapani, 1971
• Leptophytum absonum (Foslie) Adey, 1970 accepted as Phymatolithon repandum (Foslie) Wilks & Woelkerling, 1994
• Leptophytum acervatum (Foslie) Y.M. Chamberlain & Keats, 1994
• Leptophytum adeyi Steneck & R.T. Paine, 1986
• Leptophytum arcticum (Kjellman) Athanasiadis, 2007
• Leptophytum asperulum (Foslie) Adey, 1970 accepted as Phymatolithon repandum (Foslie) Wilks & Woelkerling, 1994
• Leptophytum bisporum (Foslie) Adey, 1970
• Leptophytum bornetii (Foslie) Adey, 1966
• Leptophytum bornetii (Foslie) Adey, 1970
• Leptophytum coulmanicum (Foslie) Adey, 1970
• Leptophytum elatum Y.M. Chamberlain, 1990
• Leptophytum ferox (Foslie) Y.M. Chamberlain & Keats, 1994
• Leptophytum foecundum (Kjellman) Adey, 1966
• Leptophytum foveatum Y.M. Chamberlain & D.W. Keats, 1994
• Leptophytum granuliferum (Foslie) Adey, 1970 accepted as Lithothamnion granuliferum Foslie, 1905
• Leptophytum helenae Athanasiadis, 2007
• Leptophytum hyperandri Athanasiadis, 2007
• Leptophytum jenneborgii Athanasiadis, 2006
• Leptophytum julieae Athanasiadis & Adey, 2006
• Leptophytum kymatodes Athanasiadis, 2007
• Leptophytum laeve Adey, 1966
• Leptophytum lamellicola Athanasiadis & Adey, 2006
• Leptophytum microsporum (Foslie) Athanasiadis & Adey, 2006
• Leptophytum repandum (Foslie) Adey, 1970 accepted as Phymatolithon repandum (Foslie) Wilks & Woelkerling, 1994
• Leptophytum taltalense (Foslie) Adey, 1970
• Leptophytum tenue (Kjellman) Athanasiadis & Adey, 2006
• Lithothamnion absonum Foslie, 1907 accepted as Phymatolithon repandum (Foslie) Wilks & Woelkerling, 1994
• Lithothamnion acervatum Foslie, 1907 accepted as Leptophytum acervatum (Foslie) Y.M. Chamberlain & Keats, 1994
• Lithothamnion aculeiferum L.R. Mason, 1943
• Lithothamnion adeyi P.W. Gabrielson, T.B. Widdowson, S.C. Lindstrom, M.W. Hawkes & R.F. Scagel, 2000
• Lithothamnion adplicitum Foslie, 1897 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Lithothamnion aemulans Foslie & M.A. Howe accepted as Mesophyllum aemulans (Foslie & M.A. Howe) W.H. Adey, 1970
• Lithothamnion affine Foslie, 1897 accepted as Lithophyllum kotschyanum Unger, 1858
• Lithothamnion agariciforme Foslie, 1898 accepted as Mesophyllum lichenoides (J. Ellis) Me. Lemoine, 1928
• Lithothamnion album Heydrich, 1897
• Lithothamnion alcicorne Kjellman, 1883 accepted as Lithothamnion tophiforme (Esper) Unger, 1858
• Lithothamnion amplexifrons (Harvey) Lemoine ex Taylor, 1960
• Lithothamnion andrussowii K.N. Deckenbach
• Lithothamnion angolense Romanes
• Lithothamnion annulatum Foslie, 1906 accepted as Phymatolithon lenormandii (J.E. Areschoug) W.H. Adey, 1966
• Lithothamnion antarcticum (J.D. Hooker & Harvey) Heydrich, 1901
• Lithothamnion apiculatum Foslie, 1895 accepted as Lithothamnion fornicatum Foslie, 1891
• Lithothamnion arcticum (Kjellman) Foslie, 1900 accepted as Mesophyllum arcticum (Kjellman) Athanasiadis, 1996
• Lithothamnion asperulum (Foslie) Foslie, 1907 accepted as Phymatolithon repandum (Foslie) Wilks & Woelkerling, 1994
• Lithothamnion aucklandicum (Foslie) Foslie, 1907
• Lithothamnion australe Foslie, 1904
• Lithothamnion bamleri Heydrich, 1897 accepted as Lithophyllum bamleri (Heydrich) Heydrich, 1897
• Lithothamnion bandanum Foslie, 1904
• Lithothamnion battersii Foslie, 1896 accepted as Lithothamnion glaciale Kjellman, 1883
• Lithothamnion betieri M. Lemoine, 1939
• Lithothamnion bisporum Foslie, 1906 accepted as Leptophytum bisporum (Foslie) Adey, 1970
• Lithothamnion boreale Foslie, 1891 accepted as Lithothamnion glaciale Kjellman, 1883
• Lithothamnion bornetii Foslie, 1899 accepted as Leptophytum bornetii (Foslie) Adey, 1970
• Lithothamnion botrytoides Foslie, 1898 accepted as Lithothamnion glaciale Kjellman, 1883