Acrosiphonia sonderi (Kützing) Kornmann, 1962 (additional source)
Acrothrix gracilis Kylin, 1907 (additional source)
Agardhiella subulata (C.Agardh) Kraft & M.J.Wynne, 1979 (additional source)
Agarum clathratum Dumortier, 1822 (additional source)
Aglaothamnion halliae (Collins) Aponte, D.L.Ballantine & J.N.Norris, 1997 (basis of record)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (additional source)
Alaria esculenta (Linnaeus) Greville, 1830 (additional source)
Antithamnion cruciatum (C.Agardh) Nägeli, 1847 (additional source)
Antithamnionella floccosa (O.F.Müller) Whittick, 1980 (additional source)
Arthrocladia villosa (Hudson) Duby, 1830 (additional source)
Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (additional source)
Asperococcus fistulosus (Hudson) W.J.Hooker, 1833 (additional source)
Bangia fuscopurpurea (Dillwyn) Lyngbye, 1819 (basis of record)
Blastophysa rhizopus Reinke, 1889 (additional source)
Blidingia marginata (J.Agardh) P.J.L.Dangeard ex Bliding, 1963 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Blidingia ramifera (Bliding) Garbary & L.B.Barkhouse, 1987 (additional source)
Bolbocoleon piliferum Pringsheim, 1862 (additional source)
Bonnemaisonia hamifera Hariot, 1891 (additional source)
Bostrychia radicans (Montagne) Montagne, 1842 (basis of record)
Botrytella micromora Bory, 1822 (additional source)
Bryopsis hypnoides J.V.Lamouroux, 1809 (additional source)
Bryopsis plumosa (Hudson) C.Agardh, 1823 (additional source)
Callithamnion corymbosum (Smith) Lyngbye, 1819 (additional source)
Callithamnion tetragonum (Stackhouse) S.F.Gray, 1821 (additional source)
Callocolax fungiformis Kylin, 1925 (basis of record)
Capsosiphon fulvescens (C.Agardh) Setchell & N.L.Gardner, 1920 (additional source)
Ceramium cimbricum H.E.Petersen, 1924 (additional source)
Ceramium circinatum (Kützing) J.Agardh, 1851 (additional source)
Ceramium deslongchampsii Chauvin ex Duby, 1830 (additional source)
Ceramium diaphanum (Lightfoot) Roth, 1806 (additional source)
Ceramium rubrum C.Agardh, 1811 accepted as Ceramium virgatum Roth, 1797 (additional source)
Ceramium strictum (Kützing) Rabenhorst, 1847 accepted as Ceramium deslongchampsii Chauvin ex Duby, 1830 (additional source)
Chaetomorpha aerea (Dillwyn) Kützing, 1849 (additional source)
Chaetomorpha brachygona Harvey, 1858 (basis of record)
Chaetomorpha capillaris (Kützing) Børgesen, 1925 (basis of record)
Chaetomorpha linum (O.F.Müller) Kützing, 1845 (additional source)
Chaetomorpha melagonium (F.Weber & D.Mohr) Kützing, 1845 (additional source)
Chaetomorpha minima Collins & Hervey, 1917 (basis of record)
Chaetomorpha picquotiana Montagne ex Kützing, 1849 (basis of record)
Champia parvula (C.Agardh) Harvey, 1853 (additional source)
Chondria baileyana (Montagne) Harvey, 1853 (basis of record)
Chondrus crispus Stackhouse, 1797 (additional source)
Chorda filum (Linnaeus) Stackhouse, 1797 (additional source)
Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (additional source)
Choreocolax polysiphoniae Reinsch, 1875 (additional source)
Chroodactylon ornatum (C.Agardh) Basson, 1979 (additional source)
Cladophora albida (Nees) Kutzing, 1843 (additional source)
Cladophora dalmatica Kützing, 1843 (additional source)
Cladophora globulina (Kützing) Kützing, 1845 (additional source)
Cladophora laetevirens (Dillwyn) Kützing, 1843 (additional source)
Cladophora liniformis Kützing, 1849 (additional source)
Cladophora pygmaea Reinke, 1888 accepted as Lychaete pygmaea (Reinke) M.J.Wynne, 2017 (additional source)
Cladophora ruchingeri (C.Agardh) Kützing, 1845 (additional source)
Cladophora rupestris (Linnaeus) Kützing, 1843 (additional source)
Cladophora sericea (Hudson) Kützing, 1843 (additional source)
Cladophora vagabunda (Linnaeus) Hoek, 1963 (additional source)
Cladosiphon zosterae (J.Agardh) Kylin, 1940 (additional source)
Cladostephus spongiosus (Hudson) C.Agardh, 1817 (additional source)
Clathromorphum circumscriptum (Strömfelt) Foslie, 1898 (additional source)
Clathromorphum compactum (Kjellman) Foslie, 1898 (additional source)
Coccotylus truncatus (Pallas) M.J.Wynne & J.N.Heine, 1992 (additional source)
Codium fragile (Suringar) Hariot, 1889 (additional source)
Coilodesme bulligera Strömfelt, 1886 (additional source)
Colpomenia peregrina Sauvageau, 1927 (additional source)
Corallina officinalis Linnaeus, 1758 (additional source)
Cystoclonium purpureum (Hudson) Batters, 1902 (additional source)
Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824 (additional source)
Delamarea attenuata (Kjellman) Rosenvinge, 1893 (additional source)
Derbesia marina (Lyngbye) Solier, 1846 (additional source)
Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813 (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Devaleraea ramentacea (Linnaeus) Guiry, 1982 (additional source)
Dictyosiphon chordaria Areschoug, 1847 (additional source)
Dictyosiphon ekmanii Areschoug, 1875 (additional source)
Dictyosiphon foeniculaceus (Hudson) Greville, 1830 (additional source)
Dictyosiphon macounii Farlow, 1889 (basis of record)
Dilsea integra (Kjellman) Rosenvinge, 1898 accepted as Dilsea socialis (Postels & Ruprecht) Perestenko, 1996 (additional source)
Dumontia contorta (S.G.Gmelin) Ruprecht, 1850 (additional source)
Ectocarpus fasciculatus Harvey, 1841 (additional source)
Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819 (additional source)
Elachista chondrii Areschoug, 1875 (additional source)
Elachista fucicola (Velley) Areschoug, 1842 (additional source)
Endodictyon infestans Gran, 1897 (additional source)
Enteromorpha clathrata (Roth) Greville, 1830 accepted as Ulva clathrata (Roth) C.Agardh, 1811 (additional source)
Enteromorpha flexuosa (Wulfen) J.Agardh, 1883 accepted as Ulva flexuosa Wulfen, 1803 (additional source)
Enteromorpha intestinalis (Linnaeus) Nees, 1820 accepted as Ulva intestinalis Linnaeus, 1753 (additional source)
Enteromorpha linza (Linnaeus) J.Agardh, 1883 accepted as Ulva linza Linnaeus, 1753 (additional source)
Enteromorpha prolifera (O.F.Müller) J.Agardh, 1883 accepted as Ulva prolifera O.F.Müller, 1778 (additional source)
Epicladia flustrae Reinke, 1889 (additional source)
Epicladia perforans (Huber) R.Nielsen, 1980 (additional source)
Erythrocladia irregularis Rosenvinge, 1909 (additional source)
Erythrodermis traillii (Holmes ex Batters) Guiry & Garbary, 1990 (additional source)
Erythrotrichia carnea (Dillwyn) J.Agardh, 1883 (additional source)
Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882 (additional source)
Eugomontia sacculata Kornmann, 1960 (additional source)
Feldmannia caespitula (J.Agardh) Knoepffler-Péguy, 1970 (basis of record)
Feldmannia irregularis (Kützing) Hamel, 1939 (additional source)
Fimbrifolium dichotomum (Lepechin) G.I.Hansen, 1980 (additional source)
Fucus distichus Linnaeus, 1767 (additional source)