Halymenia ballesterosii Rodríguez-Prieto, S.-M.Lin, De Clerck & Huisman, 2020 species accepted

Halymenia silviae C.A.A.Azevedo, Cassano & M.C.Oliveira species accepted

Halymenia cearensis C.A.A.Azevedo, Cassano & M.C.Oliveira species accepted

Nesoia latifolia (P.Crouan & H.Crouan ex Kützing) H.W.Lee & M.S.Kim, 2019 species homotypic synonym

Halymenia pinnatifida C.A.A.Azevedo, Cassano & M.C.Oliveira species accepted

Halymenia ignifera C.A.A.Azevedo, Cassano & M.C.Oliveira species accepted

Grateloupia doryphora (Mont.) M.A.Howe species doubtful

Grateloupia maxima (Gardner) Kylin, 1941 species synonym

Grateloupia multiphylla E.Y.Dawson, 1954 species synonym

Grateloupia abreviata Kylin, 1941 species synonym

Grateloupia cutleriae f. maxima N.L.Gardner, 1911 form synonym

Halymenia hancocki species accepted

Halymenia pseudofloresia Collins & Howe species accepted

Halymenia floresia (Clemente) C.A.Agardh species accepted

Fucus floresia Clemente species synonym

Halymenia lacerata Sonder, 1871 species accepted

Halymenia mirabilis D.L.Ballant. & H.Ruiz, 2004 species accepted

Halymenia kuetzingii A.J.K.Millar, 2005 species accepted

Halymenia durvillaei species synonym

Weeksia templetonii species synonym

Sebdenia actinophysa (M.A.Howe) E.Soler-Onís, 1998 species synonym

Halymenia bermudensis F.S.Collins & M.A.Howe species synonym

Halymenia vinacea M.Howe & W.R.Taylor species accepted

Halymenia abyssicola species accepted

Halymenia jelinekii Grunow, 1868 species accepted

Halymenia gelinaria F.S.Collins & M.A.Howe species synonym

Halymenia durvillei Bory, 1828 species accepted

Halymenia dilatata Zanardini, 1851 species accepted

Sebdenia dilatata (Zanardini) De Toni species synonym

Halymenia californica species accepted

Halymenia maculata J.Agardh, 1885 species accepted

Sebdenia maculata (J.Agardh) De Toni, 1900 species synonym

Halymenia brasiliana S.M.Guim. & M.T.Fujii species accepted

Halymenia floresii (Clemente & Rubio) C.Agardh species accepted

Halymenia floresii var. ulvoidea Codomier, 1974 variety synonym

Halymenia ulvoidea Zanardini, 1865 species synonym

Halymenia floresii subsp. harveyana (J.Agardh) Womersley & Lewis, 1994 subspecies synonym

Halymenia harveyana J.Agardh, 1892 species accepted

Fucus floresii Clemente, 1807 species synonym

Halymenia floridana J.Agardh species accepted

Halymenia bifida species accepted

Halymenia actinophysa M.A.Howe, 1911 species accepted

Halymenia duchassaingii (J.Agardh) Kylin species accepted

Meristotheca duchassaingii J.Agardh species synonym

Halymenia templetonii species accepted

Halymenia schizymenioides species accepted

Halymenia chiangiana I.A.Abbott & Kraft, 1997 species accepted

Halymenia clathrata E.C.Oliveira et al. species accepted

Halymenia megaspora species accepted

Halymenia hollenbergii species accepted

Halymenia pseudofloresii F.S.Collins & M.A.Howe species accepted

Halymenia formosa Harvey ex Kützing species accepted

Halymenia durvillei var. formosa (Harvey ex Kütz.) Reinbold, 1896 variety synonym

Halymenia integra M.Howe & W.R.Taylor species accepted

Halymenia santamariae W.R.Taylor species accepted

Halymenia elongata C.Agardh species accepted

Halymenia cavernicola Giaccone, 1968 species synonym

Halymenia trigona (Clemente) C.Agardh species synonym

Halymenia fastigiata J.Agardh, 1849 species synonym

Halymenia latifolia P.L.Crouan & H.M.Crouan ex Kützing, 1866 species accepted

Halymenia latifolia var. trabeculata (Erceg.) Codomier, 1973 variety synonym

Halymenia trabeculata Erceg., 1949 species synonym

Halymenia gardneri (Kylin) Parkinson species accepted

Aeodes gardneri species synonym

Halymenia coccinea species accepted

Halymenia lanceola J.Agardh, 1841 species synonym

Halymenia doryphora Mont. species synonym

Grateloupia lanceola species synonym

Halymenia latifolia P.L.Crouan & H.M.Crouan species homotypic synonym

Iridaea fimbriata Kütz., 1867 species synonym

Halymenia nukuhivensis N'Yuert & Payri, 2009 species accepted

Halymenia formosa Harvey species homotypic synonym