Acinetosporaceae Hamel ex J. Feldmann, 1937 (basis of record)
Acrosiphonia J.Agardh, 1846 (additional source)
Acrosiphonia arcta (Dillwyn) Gain, 1912 (additional source)
Acrosiphonia sonderi (Kützing) Kornmann, 1962 (additional source)
Acrosiphoniaceae S. Jónsson, 1959 (basis of record)
Agarum Dumortier, 1822 (basis of record)
Agarum clathratum Dumortier, 1822 (additional source)
Agarum cribrosum Bory, 1826 accepted as Agarum clathratum Dumortier, 1822 (basis of record)
Ahnfeltia Fries, 1836 (additional source)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (basis of record)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (additional source)
Alaria Greville, 1830 (additional source)
Alaria esculenta (Linnaeus) Greville, 1830 (additional source)
Alcyonidium gelatinosum (Linnaeus, 1761) (basis of record)
Ascophyllum Stackhouse, 1809 (additional source)
Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 (additional source)
Audouinella Bory de Saint-Vincent, 1823 (additional source)
Audouinella purpurea (Lightfoot) Woelkerling, 1973 accepted as Rhodochorton purpureum (Lightfoot) Rosenvinge, 1900 (basis of record)
Audouinellaceae J.Feldmann, 1962 (basis of record)
Bangia Lyngbye, 1819 (additional source)
Bangia atropurpurea (Mertens ex Roth) C.Agardh, 1824 (additional source)
Bangiadulcis W.A.Nelson, 2007 accepted as Bangia Lyngbye, 1819 (basis of record)
Bangiadulcis atropurpurea (Mertens ex Roth) W.A.Nelson, 2007 accepted as Bangia atropurpurea (Mertens ex Roth) C.Agardh, 1824 (basis of record)
Batrachospermum Roth, 1797 (basis of record)
Batrachospermum confusum (Bory) Hassall, 1845 accepted as Sheathia confusa (Bory) salomaki & M.L.Vis, 2014 (basis of record)
Batrachospermum confusum (Bory) Hassall, 1845 accepted as Sheathia confusa (Bory) salomaki & M.L.Vis, 2014 (additional source)
Batrachospermum confusum f. anatinum (Sirodot) S.A.Stewart & M.L.Vis, 2007 accepted as Sheathia boryana (Sirodot) Salomaki & M.L.Vis, 2014 (basis of record)
Batrachospermum turfosum Bory, 1808 accepted as Paludicola turfosa (Bory) M.L.Vis & Necchi, 2020 (basis of record)
Battersia Reinke ex Batters, 1890 (basis of record)
Battersia Reinke ex Batters, 1890 (source of synonymy)
Battersia arctica (Harvey) Draisma, Prud'homme & H.Kawai, 2010 (basis of record)
Blidingia Kylin, 1947 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Callithamnioideae De Toni, 1903 (basis of record)
Ceramieae (Dumortier) Schmitz, 1889 (basis of record)
Ceramium Roth, 1797 (additional source)
Ceramium virgatum Roth, 1797 (additional source)
Chaetomorpha Kützing, 1845 (additional source)
Chaetomorpha herbipolensis Lagerheim, 1887 (basis of record)
Chaetomorpha linum (O.F.Müller) Kützing, 1845 (additional source)
Chaetomorpha melagonium (F.Weber & D.Mohr) Kützing, 1845 (basis of record)
Chaetomorpha melagonium (F.Weber & D.Mohr) Kützing, 1845 (additional source)
Chaetopteris Kützing, 1843 (basis of record)
Chaetopteris plumosa (Lyngbye) Kützing, 1843 (basis of record)
Chlorophyceae (basis of record)
Chorda Stackhouse, 1797 (additional source)
Chorda filum (Linnaeus) Stackhouse, 1797 (additional source)
Chordales (basis of record)
Chordaria C.Agardh, 1817 (additional source)
Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (additional source)
Cladophora Kützing, 1843 (additional source)
Cladophora rupestris (Linnaeus) Kützing, 1843 (additional source)
Coccotylus Kützing, 1843 (additional source)
Coccotylus truncatus (Pallas) M.J.Wynne & J.N.Heine, 1992 (additional source)
Corallinineae (basis of record)
Cyclidium glaucoma Möller (basis of record)
Delesserioideae Stizenberger, 1860 (basis of record)
Desmarestia J.V.Lamouroux, 1813 (additional source)
Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813 (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Devaleraea Guiry, 1982 (additional source)
Devaleraea ramentacea (Linnaeus) Guiry, 1982 (additional source)
Dictyosiphon Greville, 1830 (additional source)
Dictyosiphon foeniculaceus (Hudson) Greville, 1830 (additional source)
Dilsea Stackhouse, 1809 (additional source)
Dilsea integra (Kjellman) Rosenvinge, 1898 accepted as Dilsea socialis (Postels & Ruprecht) Perestenko, 1996 (additional source)
Dilsea socialis (Postels & Ruprecht) Perestenko, 1996 (basis of record)
Dinoflagellata (basis of record)
Dumontia J.V.Lamouroux, 1813 (additional source)
Dumontia contorta (S.G.Gmelin) Ruprecht, 1850 (additional source)
Dumontia incrassata (O.F.Müller) J.V.Lamouroux, 1813 accepted as Dumontia contorta (S.G.Gmelin) Ruprecht, 1850 (additional source)
Elachista Duby, 1830 (additional source)
Elachista fucicola (Velley) Areschoug, 1842 (additional source)
Eurhodophytina (basis of record)
Fimbrifolium G.I.Hansen, 1980 (additional source)
Fimbrifolium dichotomum (Lepechin) G.I.Hansen, 1980 (additional source)
Fucus Linnaeus, 1753 (additional source)
Fucus distichus Linnaeus, 1767 (additional source)
Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957 (basis of record)
Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957 (source of synonymy)
Fucus evanescens C.Agardh, 1820 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957 (basis of record)
Fucus evanescens C.Agardh, 1820 accepted as Fucus distichus subsp. evanescens (C.Agardh) H.T.Powell, 1957 (additional source)
Fucus vesiculosus Linnaeus, 1753 (additional source)
Gongrosira debaryana Rabenhorst, 1868 (basis of record)
Haemescharia Kjellman, 1883 (additional source)
Haemescharia polygyna Kjellman, 1883 (basis of record)
Halosiphon Jaasund, 1957 (additional source)
Halosiphon tomentosus (Lyngbye) Jaasund, 1957 (additional source)
Heterokontophyta accepted as Ochrophyta (basis of record)
Hippoporina reticulatopunctata (Hincks, 1877) (additional source)
Laminaria J.V. Lamouroux, 1813 (additional source)
Laminaria digitata (Hudson) J.V.Lamouroux, 1813 (additional source)
Laminaria hyperborea (Gunnerus) Foslie, 1884 (additional source)
Laminaria solidungula J.Agardh, 1868 (additional source)
Lemanea Bory de Saint-Vincent, 1808 (basis of record)
Lemanea fluviatilis (Linnaeus) C.Agardh, 1811 (basis of record)
Leptophytum W.H.Adey, 1966 accepted as Phymatolithon Foslie, 1898 (additional source)
Leptophytum foecundum (Kjellman) W.H.Adey, 1966 (basis of record)
Leptophytum foecundum (Kjellman) W.H.Adey, 1966 (additional source)
Leptophytum laeve W.H.Adey, 1966 (basis of record)

English ant-like flower beetles for Anthicidae Latreille, 1819
English black siphon weed [from synonym] for Polysiphonia fucoides (Hudson) Greville, 1824
English bushy berry wrack [from synonym] for Cystoseira baccata (S.G.Gmelin, 1768) P.C.Silva, 1952
Swedish fjäderslick [from synonym] for Polysiphonia fucoides (Hudson) Greville, 1824