Hydrolithon farinosum (J.V.Lamour.) Penrose & Y.M.Chamb. species accepted

Fosliella farinosa (J.V.Lamour.) M.A.Howe species synonym

Melobesia granulata (Menegh.) Zanardini, 1843 species synonym

Melobesia farinosa J.V.Lamour. species synonym

Hydrolithon rupestre (Foslie) Penrose species accepted

Hydrolithon sargassi (Foslie) Y.M.Chamberlain species accepted

Melobesia marginata f. sargassi Foslie, 1904 form synonym

Pneophyllum sargassi (Foslie) Y.M.Chamberlain, 1983 species synonym

Melobesia sargassi (Foslie) Foslie species synonym

Hydrolithon breviclavium (Foslie) Foslie species accepted

Goniolithon breviclavium Foslie species synonym

Hydrolithon reinboldii (Weber Bosse & Foslie) Foslie species accepted

Paragoniolithon reinboldii (Weber Bosse & Foslie) Lemoine, 1911 species synonym

Goniolithon reinboldii (Weber-van Bosse & Foslie) Weber-van Bosse & Foslie species synonym

Hydrolithon boergesenii (Foslie) Foslie species accepted

Goniolithon boergesenii Foslie species synonym

Porolithon boergesenii (Foslie) Me.Lemoine, 1917 species synonym

Hydrolithon cruciatum (Bressan) Y.M.Chamberlain species accepted

Fosliella cruciata Bressan species synonym

Hydrolithon boreale (Foslie) Y.M.Chamberlain species accepted

Melobesia farinosa f. borealis Foslie, 1905 form synonym

Fosliella farinosa f. callithamnioides (Falkenb.) Y.M.Chamb., 1983 form synonym

Fosliella borealis (Foslie) Athanasiadis, 1996 species synonym

Hydrolithon farinosum var. solmsiana (Falkenb.) variety synonym

Hydrolithon farinosum f. callithamnioides (Foslie) Serio, 1994 form synonym

Melobesia farinosa f. callithamnioides Foslie, 1905 form synonym

Hydrolithon murakoshii Iryu & Matsuda, 1996 species accepted

Hydrolithon gardineri (Foslie) Verheij & Prud'homme van Reine species accepted

Hydrolithon cymodoceae (Foslie) Penrose species accepted

Melobesia cymodoceae Foslie species synonym

Porolithon craspedium (Foslie) Foslie, 1909 species synonym

Hydrolithon craspedium (Foslie) P.C.Silva species accepted

Hydrolithon decipiens species accepted

Lithophyllum gardineri subsp. subhemisphaericum Foslie subspecies synonym

Lithophyllum falklandicum (Foslie) Foslie species synonym

Lithophyllum craspedium subsp. abbreviatum Foslie subspecies synonym

Lithophyllum gardineri subsp. obpyramidatum Foslie subspecies synonym

Melobesia farinosa subsp. callithamnioides Foslie subspecies synonym

Melobesia farinosa subsp. borealis Foslie subspecies synonym

Melobesia farinosa var. solmsiana (Falkenb.) Lemoine, 1917 variety synonym

Hydrolithon braganum Woelkerling et al., 2012 species accepted

Hydrolithon falklandicum (Foslie) M.L.Mendoza, 1979 species accepted

Heteroderma sargassi (Foslie) Foslie, 1909 species synonym

Lithophyllum sargassi (Foslie) Foslie, 1906 species synonym

Spongites reinboldii (Weber Bosse & Foslie) Penrose & Woelkering, 1988 species synonym

Lithophyllum reinboldii Weber Bosse & Foslie species synonym

Lithophyllum coarctatum Foslie species synonym

Lithophyllum gardineri Foslie species synonym

Lithophyllum craspedium Foslie species synonym

Melobesia farinosa var. borealis Lemoine, 1905 variety synonym

Melobesia farnosa Lamouroux species synonym

Hydrolithon samoënse (Foslie) Keats & Y.M.Chamberlain species accepted

Fosliella sargassi (Foslie) Athanasiadis, 1996 species synonym

Melobesia lemoinei (Miranda, 1935) species accepted

Porolithon reinboldii (Weber Bosse & Foslie) Lemoine, 1911 species synonym

Hydrolithon lemoinei (Miranda, 1935) species synonym