Acanthococcus J.D.Hooker & Harvey, 1845 (additional source)
Acanthococcus antarcticus Hooker f. & Harvey, 1845 (basis of record)
Acanthococcus antarcticus Hooker f. & Harvey, 1845 (additional source)
Acanthocorbis asymmetrica (Thomsen) Hara & Takahashi, 1984 (additional source)
Acanthocorbis unguiculata (Thomsen) Hara & Takahashi, 1984 (additional source)
Acanthoeca brevipoda W.Ellis, 1930 (additional source)
Acanthoeca spectabilis W.N.Ellis, 1930 (basis of record)
Acanthoeca spectabilis W.N.Ellis, 1930 (additional source)
Acanthoecaceae (basis of record)
Acanthoecopsis asymmetrica Thomsen (additional source)
Acinetosporaceae Hamel ex J. Feldmann, 1937 (basis of record)
Acrosiphonia J.Agardh, 1846 (additional source)
Acrosiphonia arcta (Dillwyn) Gain, 1912 (additional source)
Acrosiphonia pacifica (Montagne) J.Agardh, 1857 accepted as Spongomorpha pacifica (Montagne) Kützing, 1854 (additional source)
Acrosiphoniaceae S. Jónsson, 1959 (basis of record)
Actinomonadaceae Kent, 1881 (basis of record)
Adenocystis J.D.Hooker & Harvey, 1845 (additional source)
Adenocystis utricularis (Bory) Skottsberg, 1907 (basis of record)
Adenocystis utricularis (Bory) Skottsberg, 1907 (additional source)
Ahnfeltia Fries, 1836 (additional source)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (basis of record)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (additional source)
Alethocladus Sauvageau, 1903 accepted as Halopteris Kützing, 1843 (additional source)
Alethocladus corymbosus (Dickie) Sauvageau, 1903 accepted as Halopteris corymbosa (Dickie) Draisma, Prud'homme & H.Kawai, 2010 (additional source)
Alexandrium Halim, 1960 (additional source)
Alexandrium tamarense (Lebour) Balech, 1995 (basis of record)
Alexandrium tamarense (Lebour) Balech, 1995 (additional source)
Amphidinium Claperède & Lachmann, 1859 (additional source)
Amphidinium hadae Balech, 1976 (additional source)
Ancyromonadidae Cavalier-Smith, 1993 (basis of record)
Anisonema Dujardin, 1841 (additional source)
Anisonema prosgeobium Skuja, 1939 (additional source)
Anisonematidae Kent, 1880 (basis of record)
Antarcticothamnion R.L.Moe & P.C.Silva, 1979 (basis of record)
Antarcticothamnion polysporum R.L.Moe & P.C.Silva, 1979 (basis of record)
Antarctocolax Skottsberg, 1953 (additional source)
Antarctocolax lambii Skottsberg, 1953 (additional source)
Antarctosaccion Delépine, 1970 (additional source)
Antarctosaccion applanatum (Gain) Delépine, 1970 (additional source)
Apoglosseae Showe M.Lin, S.Fredericq & M.H.Hommersand, 2012 (basis of record)
Apusomonadea (basis of record)
Apusomonadida (basis of record)
Apusozoa (basis of record)
Ascoseira Skottsberg, 1907 (additional source)
Ascoseira mirabilis Skottsberg, 1907 (additional source)
Audouinella Bory de Saint-Vincent, 1823 (additional source)
Audouinella concrescens (K.M.Drew) P.S.Dixon, 1976 accepted as Meiodiscus concrescens (K.M.Drew) P.W.Gabrielson, 2000 (basis of record)
Audouinella membranacea (Magnus) Papenfuss, 1945 accepted as Rubrointrusa membranacea (Magnus) S.L.Clayden & G.W.Saunders, 2010 (additional source)
Audouinella purpurea (Lightfoot) Woelkerling, 1973 accepted as Rhodochorton purpureum (Lightfoot) Rosenvinge, 1900 (basis of record)
Audouinellaceae J.Feldmann, 1962 (basis of record)
Austrofilum A.F.Peters, 2003 (basis of record)
Austrofilum incommodum (Skottsberg) A.F.Peters, 2003 (basis of record)
Ballia Harvey, 1840 (additional source)
Ballia callitricha (C.Agardh) Kützing, 1843 (additional source)
Ballia sertularioides (Suhr) Papenfuss, 1940 (additional source)
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)
Bicosecophyceae accepted as Bicoecea (basis of record)
Bicosoecophyceae (basis of record)
Bicosoecophycidae (basis of record)
Bicosoecophytina (basis of record)
Bicosta antennigera Moestrup, 1979 (additional source)
Bicosta spinifera (Throndsen) Leadbeater, 1978 (additional source)
Blepharocysta Ehrenberg, 1873 (additional source)
Blepharocysta splendor-maris (Ehrenberg) F.Stein, 1883 (basis of record)
Blepharocysta splendor-maris (Ehrenberg) F.Stein, 1883 (additional source)
Blidingia Kylin, 1947 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Bodo curvifilus Griessmann, 1913 (additional source)
Bodonida (basis of record)
Bodonina (basis of record)
Bonnemaisoniales (basis of record)
Bryopsidineae (basis of record)
Bryopsidophyceae accepted as Ulvophyceae (basis of record)
Caecitellales (basis of record)
Cafeteria T.Fenchel & D.J.Patterson, 1988 (additional source)
Cafeteria roenbergensis Fenchel & D.J.Patterson, 1988 (additional source)
Calcidiscus Kamptner, 1950 (additional source)
Calcidiscus leptoporus (G.Murray & V.H.Blackman) Loeblich & Tappan, 1978 † (basis of record)
Calcidiscus leptoporus (G.Murray & V.H.Blackman) Loeblich & Tappan, 1978 † (additional source)
Calciopappus Gaarder & Ramsfjell, 1954 (additional source)
Calliacantha natans (Grøntved) Leadbeater, 1978 (additional source)
Calliacantha simplex Manton & Oates, 1979 (additional source)
Callithamnieae Schmitz, 1889 (basis of record)
Callithamnioideae De Toni, 1903 (basis of record)
Callophyllis Kützing, 1843 (additional source)
Callophyllis atrosanguinea (Hooker f. & Harvey) Hariot, 1887 (basis of record)
Callophyllis atrosanguinea (Hooker f. & Harvey) Hariot, 1887 (additional source)
Callophyllis tenera J.Agardh, 1849 (additional source)
Callophyllis variegata (Bory) Kützing, 1843 (basis of record)
Callophyllis variegata (Bory) Kützing, 1843 (additional source)
Caneosphaera Gaarder, 1977 (additional source)
Caneosphaera molischii (Schiller) Gaarder, 1977 accepted as Syracosphaera molischii J.Schiller, 1925 (additional source)
Ceramieae (Dumortier) Schmitz, 1889 (basis of record)
Ceramium Roth, 1797 (additional source)
Ceramium involutum Kützing, 1849 (additional source)
Ceratiaceae Kofoid, 1907 (additional source)
Ceratium F.Schrank, 1793 (additional source)

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