• Melobesia Foslie, 1898 accepted as Hydrolithon (Foslie) Foslie, 1909 [Family: Hydrolithaceae]
• Melobesia Heydrich, 1897 accepted as Titanoderma Nägeli, 1858 [Family: Lithophyllaceae]
• Melobesia J.V.F. Lamouroux, 1812 [Family: Hapalidiaceae]
• Melobesia accola (Foslie) Lemoine
• Melobesia agariciformis Areschoug, 1851 accepted as Lithophyllum dentatum (Kützing) Foslie, 1900
• Melobesia amplexifrons Harvey, 1849 accepted as Pneophyllum amplexifrons (Harvey) Y.M. Chamberlain & R.E. Norris, 1994
• Melobesia antarctica (J.D. Hooker & Harvey) Harvey accepted as Lithothamnion antarcticum (J.D. Hooker & Harvey) Heydrich, 1901
• Melobesia bermudensis Foslie, 1901 accepted as Lithoporella bermudensis (Foslie) W.H. Adey, 1970
• Melobesia brassica-florida Harvey, 1849 accepted as Neogoniolithon brassica-florida (Harvey) Setchell & L.R. Mason, 1943
• Melobesia calcarea (Pallas) Harvey, 1849 accepted as Phymatolithon calcareum (Pallas) W.H. Adey & D.L. McKibbin, 1970
• Melobesia callithamnioides (P.L. Crouan & H.M. Crouan) Falkenberg, 1879 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Melobesia callithamnioides Falkenberg ex Solms-Laubach, 1881 accepted as Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain, 1993
• Melobesia canescens Foslie, 1900 accepted as Titanoderma canescens (Foslie) Woelkerling, Y.M. Chamberlain & P.C. Silva, 1985 accepted as Lithophyllum canescens (Foslie) Foslie, 1905
• Melobesia carpophylli Heydrich, 1893 accepted as Tenarea carpophylli (Heydrich) V.J. Chapman & P.G. Parkinson, 1974
• Melobesia caspica Foslie, 1899 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia caulerpae Foslie, 1906 accepted as Pneophyllum coronatum (Rosanoff) Penrose, 1994
• Melobesia coccinea (P.L. Crouan & H.M. Crouan) Foslie, 1898 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Melobesia compressa M'Calla, 1849 accepted as Phymatolithon calcareum (Pallas) W.H. Adey & D.L. McKibbin, 1970
• Melobesia confervicola (Kützing) Foslie, 1900 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Melobesia confervoides Funk, 1955
• Melobesia confinis P.L. Crouan & H.M. Crouan, 1867 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia corallinae P.L. Crouan & H.M. Crouan, 1867 accepted as Titanoderma corallinae (P.L. Crouan & H.M. Crouan) Woelkerling, Y.M. Chamberlain & P.C. Silva, 1985
• Melobesia coronata Rosanoff, 1866 accepted as Pneophyllum coronatum (Rosanoff) Penrose, 1994
• Melobesia corticiformis Kützing, 1849 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Melobesia crassa Lloyd, 1860 accepted as Lithophyllum tortuosum (Esper) Foslie, 1900
• Melobesia crassiuscula Kützing, 1843
• Melobesia cristata (Meneghini) Ardissone, 1883 accepted as Lithophyllum tortuosum (Esper) Foslie, 1900
• Melobesia cymodoceae Foslie, 1901 accepted as Hydrolithon cymodoceae (Foslie) Penrose, 1992
• Melobesia cystoseirae Hauck accepted as Lithophyllum cystoseirae (Hauck) Heydrich, 1897
• Melobesia darwinii Harvey, 1849 accepted as Lithothamnion darwinii (Harvey) Areschoug, 1852
• Melobesia decipiens Foslie, 1897 accepted as Pseudolithophyllum decipiens (Foslie) Steneck & R.T. Paine, 1986
• Melobesia decussata Endlicher, 1843 accepted as Lithophyllum decussatum (J. Ellis & Solander) Philippi, 1837
• Melobesia deformans Solms-Laubach, 1881 accepted as Choreonema thuretii (Bornet) F. Schmitz, 1889
• Melobesia dentata (Kützing) Decaisne, 1842 accepted as Lithophyllum dentatum (Kützing) Foslie, 1900
• Melobesia explanata (Foslie) Foslie, 1908
• Melobesia farinosa J.V. Lamouroux, 1816 accepted as Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain, 1993
• Melobesia fasciculata (Lamarck) Harvey, 1846 accepted as Lithophyllum fasciculatum (Lamarck) Foslie, 1898
• Melobesia fertilis M. Lemoine, 1930 accepted as Fosliella fertilis (M. Lemoine) Segonzac, 1984
• Melobesia flabellata Sonder, 1845 accepted as Metamastophora flabellata (Sonder) Setchell, 1943
• Melobesia foliacea Kützing, 1843 accepted as Mastophora rosea (C. Agardh) Setchell, 1943
• Melobesia fosliei Rosenvige, 1917 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Melobesia frondosa Dufour, 1861 accepted as Lithophyllum stictaeforme (J.E. Areschoug) Hauck, 1877
• Melobesia fruticulosa (Kützing) Decaisne, 1842 accepted as Spongites fruticulosus Kützing, 1841
• Melobesia galapagensis (Foslie) W.R. Taylor, 1945
• Melobesia gibbsii Setchell & Foslie accepted as Heteroderma gibbsii (Setchell & Foslie) Foslie, 1909
• Melobesia grandiuscula Montagne, 1846
• Melobesia granulata (Meneghini) Zanardini, 1843 accepted as Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain, 1993
• Melobesia hapalidioides P.L. Crouan & H.M. Crouan, 1867 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia hildebrantioides (P.L. Crouan & H.M. Crouan) Foslie, 1898 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Melobesia inaequilaterata Solms-Laubach, 1881 accepted as Epilithon inaequilateralum (Solms-Laubach) Schiffner, 1916
• Melobesia indica (Foslie) Jadin, 1935 accepted as Lithoporella indica (Foslie) Adey, 1970
• Melobesia insidiosa (Solms-Laubach) Heydrich, 1897 accepted as Neogoniolithon brassica-florida (Harvey) Setchell & L.R. Mason, 1943
• Melobesia kerguelena Dickie, 1876 accepted as Lithothamnion kerguelenum (Dickie) Foslie, 1898
• Melobesia laminariae P.L. Crouan & H.M. Crouan, 1867 accepted as Titanoderma laminariae (P.L. Crouan & H.M. Crouan) Y.M. Chamberlain, 1991
• Melobesia lamourouxii Decaisne, 1842
• Melobesia lejolisii Rosanoff, 1866 accepted as Pneophyllum fragile Kützing, 1843
• Melobesia lenormandii J.E. Areschoug, 1852 accepted as Phymatolithon lenormandii (J.E. Areschoug) W.H. Adey, 1966
• Melobesia leptura Foslie, 1906
• Melobesia lichenoides (J. Ellis) Harvey, 1849 accepted as Mesophyllum lichenoides (J. Ellis) Me. Lemoine, 1928
• Melobesia lichenoides (Philippi) Endlicher, 1843 accepted as Lithophyllum byssoides (Lamarck) Foslie, 1900
• Melobesia limitata (Foslie) Rosenvinge, 1917 accepted as Pneophyllum limitatum (Foslie) Y.M. Chamberlain, 1983
• Melobesia macrocarpa Rosanoff, 1866 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia mamillaris Harvey, 1849 accepted as Neogoniolithon mamillare (Harvey) Setchell & L.R. Mason, 1943
• Melobesia marginata Setchell & Foslie, 1902
• Melobesia masakii Baba & Yoshida, 1997 accepted as Melobesia tomitaroi N.G. Kloczcova, 1987
• Melobesia mauritiana (Foslie) Foslie, 1908 accepted as Pneophyllum mauritianum (Foslie) P.C. Silva, 1996
• Melobesia mediocris (Foslie) Setchell & L.R. Mason, 1943
• Melobesia mediterranea Foslie, 1906 accepted as Titanoderma mediterraneum (Foslie) Woelkerling, 1988
• Melobesia melobesioides (Foslie) Lemoine, 1927
• Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Melobesia microspora Rosenvige, 1917 accepted as Pneophyllum fragile Kützing, 1843
• Melobesia minutula Foslie, 1904 accepted as Pneophyllum confervicolum (Kützing) Y.M. Chamberlain, 1983
• Melobesia myriocarpa P.L. Crouan & H.M. Crouan, 1867 accepted as Pneophyllum myriocarpum (P.L. Crouan & H.M. Crouan) Y.M. Chamberlain, 1983
• Melobesia notarisii L. Dufour, 1861 accepted as Neogoniolithon brassica-florida (Harvey) Setchell & L.R. Mason, 1943
• Melobesia novae-zelandiae Heydrich, 1897 accepted as Fosliella farinosa (J.V. Lamouroux) M.A. Howe, 1920 accepted as Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain, 1993
• Melobesia pacifica Heydrich, 1901 accepted as Mastophora pacifica (Heydrich) Foslie, 1903
• Melobesia pacifica Masaki, 1968 accepted as Melobesia tomitaroi N.G. Kloczcova, 1987
• Melobesia paschalis M. Lemoine, 1924 accepted as Fosliella paschalis (M. Lemoine) Setchell & N.L. Gardner, 1930
• Melobesia patena J.D. Hooker & Harvey, 1849 accepted as Synarthrophyton patena (J.D. Hooker & Harvey) R.A. Townsend, 1979
• Melobesia phragmiticola Skolka, 1961
• Melobesia plana Sonder, 1845 accepted as Metamastophora flabellata (Sonder) Setchell, 1943
• Melobesia polycarpa Zanardini
• Melobesia polymorpha Harvey, 1843 accepted as Lithophyllum incrustans R.A. Philippi, 1837
• Melobesia polystromatica E.Y. Dawson, 1960
• Melobesia prototypa (Foslie) Foslie, 1898 accepted as Lithophyllum prototypum (Foslie) Foslie, 1905
• Melobesia pruinosa Kützing, 1845 accepted as Pneophyllum fragile Kützing, 1843
• Melobesia pustulata J.V. Lamouroux, 1816 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia rhizomae (Heydrich) Foslie, 1898
• Melobesia rosanoffii (Foslie) Lemoine, 1912
• Melobesia rosea Rosanoff, 1866 accepted as Melobesia membranacea (Esper) J.V. Lamouroux, 1812
• Melobesia sargassi (Foslie) Foslie, 1908 accepted as Hydrolithon sargassi (Foslie) Y.M. Chamberlain, 1994
• Melobesia scabiosa Harvey, 1847 accepted as Lithothamnion scabiosum (Harvey) Foslie, 1898
• Melobesia simulans P.L. Crouan & H.M. Crouan, 1867 accepted as Titanoderma pustulatum (J.V. Lamouroux) Nägeli, 1858
• Melobesia solmsiana Falkenberg, 1901 accepted as Hydrolithon farinosum (J.V. Lamouroux) D. Penrose & Y.M. Chamberlain, 1993
• Melobesia solmsii Bornet ex Lemoine, 1912
• Melobesia stelligera Endlicher & Diesing, 1845 accepted as Metamastophora flabellata (Sonder) Setchell, 1943
• Melobesia stictaeformis J.E. Areschoug, 1852 accepted as Lithophyllum stictaeforme (J.E. Areschoug) Hauck, 1877
• Melobesia subplana Rosenvinge, 1917 accepted as Pneophyllum subplanum (Rosenvinge) Y.M. Chamberlain ex G.R. South & Tittley, 1986
• Melobesia subtilissima Foslie, 1905 accepted as Heteroderma subtilissimum (Foslie) Foslie, 1909
• Melobesia tasmanica (Foslie) De Toni, 1924