• Apedinella spinifera (Throndsen) Throndsen, 1971 accepted as Apedinella radians (Lohmann) P.H.Campbell, 1973
• Battersia plumigera (Holmes ex Hauck) Draisma, Prud'homme & H.Kawai, 2010
• Botrytella micromora Bory, 1822
• Chrysococcus biporus Skuja, 1939
• Cladostephus spongiosus (Hudson) C.Agardh, 1817
• Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813
• Dictyosiphon macounii Farlow, 1889
• Dinobryon sertularia Ehrenberg, 1834
• Elachista fucicola (Velley) Areschoug, 1842
• Eusphaerella turfosa Skuja, 1948 accepted as Uroglenopsis turfosa (Skuja) R.H.Thompson & D.E.Wujek, 2002
• Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957
• Gloeobotrys limneticus (G.M.Smith) Pascher, 1938
• Agarum clathratum Dumortier, 1822
• Ascophyllum nodosum (Linnaeus) Le Jolis, 1863
• Bicoeca synoica Skuja
• Chorda tomentosa Lyngbye, 1819 accepted as Halosiphon tomentosus (Lyngbye) Jaasund, 1957
• Chrysosphaerella coronacircumspina Wujek & Kristiansen, 1977 accepted as Spiniferomonas coronacircumspina (Wujek & Kristiansen) K.H.Nicholls, 1984
• Cyclonexis annularis A.C.Stokes, 1886
• Dictyocha speculum Ehrenberg, 1839 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017
• Dinobryon dilatatum D.G.Hilliard
• Ectocarpus fasciculatus Harvey, 1841
• Entonema alariae (Jaasund) Jaasumd, 1965 (uncertain)
• Feldmannia mitchelliae (Harvey) H.-S.Kim, 2010
• Fucus spiralis Linnaeus, 1753
• Halonema subsimplex Jaasund, 1951
• Acrothrix gracilis Kylin, 1907
• Ascocyclus orbicularis (J.Agardh) Kjellman, 1890 (uncertain)
• Bicoeca socialis Lemmermann, 1908
• Chorda filum (Linnaeus) Stackhouse, 1797
• Chrysosphaerella brevispina Korshikov, 1941
• Commation cryoporinum Thomsen & Larsen, 1993
• Dictyocha fibula var. messanensis f. spinosa Lemmermann, 1908
• Dinobryon cylindricum O.E.Imhof, 1887
• Dinobryon sociale var. stipitatum (Stein) Lemmermann, 1901
• Entonema aecidioides (Rosenvinge) Kylin, 1947 accepted as Laminariocolax aecidioides (Rosenvinge) A.F.Peters, 1998
• Feldmannia lebelii (Areschoug ex P.Crouan & H.Crouan) Hamel, 1939
• Fucus serratus Linnaeus, 1753
• Gononema alariae P.M.Pedersen, 1981 accepted as Microspongium alariae (P.M.Pedersen) A.F.Peters, 2003
• Alaria esculenta (Linnaeus) Greville, 1830
• Asperococcus fistulosus (Hudson) W.J.Hooker, 1833
• Bicosoeca ainikkii Järnefelt, 1956
• Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817
• Chrysosphaerella longispina Lauterborn, 1896
• Delamarea attenuata (Kjellman) Rosenvinge, 1893
• Dictyosiphon chordaria Areschoug, 1847
• Dinobryon divergens O.E.Imhof, 1887
• Ectocarpus penicillatus (C.Agardh) Kjellman, 1890
• Entonema effusum (Kylin) Kylin, 1947 accepted as Punctaria tenuissima (C.Agardh) Greville, 1830
• Fosliea curta (Foslie) Reinke, 1891
• Fucus vesiculosus Linnaeus, 1753
• Halopteris scoparia (Linnaeus) Sauvageau, 1904
• Ascocyclus distromaticus W.R.Taylor, 1937 accepted as Phycocelis foecunda Strömfelt, 1888 accepted as Myrionema foecundum (Strömfelt) Sauvageau, 1897
• Bicoeca lacustris Lemmermann
• Chilionema reptans (P.L.Crouan & H.M.Crouan) Sauvageau, 1897 accepted as Asperococcus fistulosus (Hudson) W.J.Hooker, 1833
• Chrysolykos skujae (Nauwerck) Bourrelly, 1957
• Colpomenia peregrina Sauvageau, 1927
• Dictyocha fibula var. messanensis (E.H.P.A.Haeckel) Lemmermann, 1901
• Dinobryon campanulostipitum Ahlstrom, 1937
• Dinobryon sociale var. americanum (Brunnthaler) Bachmann, 1911
• Endodictyon infestans Gran, 1897
• Feldmannia irregularis (Kützing) Hamel, 1939
• Fucus evanescens C.Agardh, 1820 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957
• Gononema aecidioides (Rosenvinge) P.M.Pedersen, 1981 accepted as Laminariocolax aecidioides (Rosenvinge) A.F.Peters, 1998
• Arthrocladia villosa (Hudson) Duby, 1830
• Battersia racemosa (Greville) Draisma, Prud'homme & H.Kawai, 2010
• Chaetopteris plumosa (Lyngbye) Kützing, 1843
• Chrysococcus cystophorus Skuja, 1956
• Coilodesme bulligera Strömfelt, 1886
• Dictyocha fibula Ehrenberg, 1839 †
• Dinobryon bavaricum Imhof, 1890
• Dinobryon sociale (Ehrenberg) Ehrenberg, 1834
• Elachista lubrica Ruprecht, 1850 accepted as Elachista fucicola (Velley) Areschoug, 1842
• Feldmannia caespitula (J.Agardh) Knoepffler-Péguy, 1970
• Fucus edentatus Bachelot Pylaie, 1830 accepted as Fucus distichus subsp. edentatus (Bachelot Pylaie) H.T.Powell, 1957
• Goniochloris mutica (A.Braun) Fott, 1960
• Apedinella radians (Lohmann) P.H.Campbell, 1973
• Battersia mirabilis Reinke ex Batters, 1890
• Bitrichia chodatii (Reverdin) Chodat, 1926
• Chromulina minor (Pascher) Pascher, 1910
• Cladosiphon zosterae (J.Agardh) Kylin, 1940
• Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813
• Dictyosiphon foeniculaceus (Hudson) Greville, 1830
• Dinobryon pediforme (Lemmermann) Steinecke, 1916
• Elachista chondrii Areschoug, 1875
• Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882
• Fucus distichus subsp. edentatus (Bachelot Pylaie) H.T.Powell, 1957
• Giraudia sphacelarioides Derbès & Solier, 1851
• Alaria grandifolia J.Agardh, 1872 accepted as Alaria esculenta (Linnaeus) Greville, 1830
• Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010
• Bicosoeca lacustris H.J.Clark, 1867
• Chromulina mikroplankton (Pascher) Pascher, 1913
• Chrysostephanosphaera globulifera Scherffel, 1911
• Dermatocelis laminariae Rosenvinge, 1898
• Dictyosiphon ekmanii Areschoug, 1875
• Dinobryon faculiferum (Willén) Willén, 1992
• Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819
• Entonema polycladum (Jaasund) Jaasund, 1965
• Fucus distichus Linnaeus, 1767
• Giffordia granulosa (Smith) G.Hamel, 1939 accepted as Hincksia granulosa (Smith) P.C.Silva, 1987
• Halosiphon tomentosus (Lyngbye) Jaasund, 1957