Actinastrum Lagerheim, 1882 (additional source)
Actinastrum hantzschii Lagerheim, 1882 (additional source)
Actinomonadaceae Kent, 1881 (basis of record)
Akashiwo G.Hansen & Moestrup, 2000 (additional source)
Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (basis of record)
Akashiwo sanguinea (K.Hirasaka) Gert Hansen & Moestrup, 2000 (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 crassum Lohmann, 1908 (additional source)
Amphidinium longum Lohmann, 1908 (additional source)
Amphidinium sphenoides Wulff, 1919 (basis of record)
Amphidinium sphenoides Wulff, 1919 (additional source)
Ankistrodesmus Corda, 1838 (basis of record)
Ankistrodesmus fusiformis Corda, 1838 (basis of record)
Antithamnionella Lyle, 1922 (additional source)
Antithamnionella spirographidis (Schiffner) E.M.Wollaston, 1968 (additional source)
Antithamnionella ternifolia (Hooker f. & Harvey) Lyle, 1922 (basis of record)
Apedinella Throndsen, 1971 (basis of record)
Apedinella radians (Lohmann) P.H.Campbell, 1973 (basis of record)
Aphanothecoideae Komárek & Anagnostidis, 1986 (basis of record)
Archaeperidinium Jörgensen, 1912 (basis of record)
Archaeperidinium minutum (Kofoid) Jørgensen, 1912 (basis of record)
Barrufeta N.Sampedro & S.Fraga, 2011 (basis of record)
Barrufeta resplendens (Hulburt) H.Gu, Z.Luo & K.N.Mertens, 2015 (basis of record)
Ceratiaceae Kofoid, 1907 (additional source)
Ceratium F.Schrank, 1793 (additional source)
Ceratium lineatum (Ehrenberg) Cleve, 1899 accepted as Tripos lineatus (Ehrenberg) F.Gómez, 2013 (additional source)
Ceratium longipes (Bailey) Gran, 1902 accepted as Tripos longipes (Bailey) F.Gómez, 2013 (basis of record)
Ceratium longipes (Bailey) Gran, 1902 accepted as Tripos longipes (Bailey) F.Gómez, 2013 (additional source)
Ceratium tripos (O.F.Müller) Nitzsch, 1817 accepted as Tripos muelleri Bory de Saint-Vincent, 1826 (basis of record)
Ceratium tripos (O.F.Müller) Nitzsch, 1817 accepted as Tripos muelleri Bory de Saint-Vincent, 1826 (additional source)
Chattonellaceae J. Throndsen, 1993 (basis of record)
Chattonellales (basis of record)
Chlorellaceae Brunnthaler, 1913 (additional source)
Chlorellales (basis of record)
Chlorophyceae (basis of record)
Coccolithophyceae (basis of record)
Codium Stackhouse, 1797 (additional source)
Codium fragile (Suringar) Hariot, 1889 (additional source)
Coenochloris Korshikov, 1953 (basis of record)
Coenochloris fottii (Hindák) Tsarenko, 1990 (basis of record)
Corymbellus J.C.Green, 1976 (additional source)
Corymbellus aureus J.C.Green, 1976 (additional source)
Cryomonadida (basis of record)
Cryptophyta (basis of record)
Cyanogranis Hindák, 1982 (basis of record)
Cyanogranis ferruginea (F.Wawrik) Hindák ex Hindák, 2006 (basis of record)
Cyanophyceae (basis of record)
Dictyocha Ehrenberg, 1837 (basis of record)
Dictyocha speculum Ehrenberg, 1839 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017 (basis of record)
Dictyocha speculum Ehrenberg, 1839 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017 (additional source)
Dinoflagellata (basis of record)
Dinophysales (basis of record)
Dinophysis Ehrenberg, 1839 (additional source)
Dinophysis acuminata Claparède & Lachmann, 1859 (additional source)
Diplopsalis R.S.Bergh, 1881 (additional source)
Diplopsalis lenticula Bergh, 1882 (additional source)
Distephanus E.Stöhr, 1880 accepted as Stephanocha K.McCartney & R.W.Jordan, 2015 (basis of record)
Distephanus E.Stöhr, 1880 accepted as Stephanocha K.McCartney & R.W.Jordan, 2015 (source of synonymy)
Distephanus speculum (Ehrenberg) Haeckel, 1887 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017 (basis of record)
Distephanus speculum (Ehrenberg) Haeckel, 1887 accepted as Octactis speculum (Ehrenberg) F.H.Chang, J.M.Grieve & J.E.Sutherland, 2017 (additional source)
Ebria Borgert, 1891 (additional source)
Ebria tripartita (Schumann) Lemmermann, 1899 (basis of record)
Ebria tripartita (Schumann) Lemmermann, 1899 (additional source)
Ebriales (additional source)
Ebriophyceae (basis of record)
Emiliania huxleyi (Lohmann) W.W.Hay & H.Mohler, 1967 accepted as Gephyrocapsa huxleyi (Lohmann) P.Reinhardt, 1972 (basis of record)
Emiliania huxleyi (Lohmann) W.W.Hay & H.Mohler, 1967 accepted as Gephyrocapsa huxleyi (Lohmann) P.Reinhardt, 1972 (additional source)
Eothecia (basis of record)
Eurhodophytina (basis of record)
Fibrocapsa S.Toriumi & H.Takano, 1973 (basis of record)
Fibrocapsa japonica S.Toriumi & H.Takano, 1973 (basis of record)
Fragilidium Balech ex Loeblich III, 1965 (additional source)
Fragilidium subglobosum (Stosch) Loeblich III, 1980 (basis of record)
Fragilidium subglobosum (Stosch) Loeblich III, 1980 (additional source)
Gephyrocapsa Kamptner, 1943 (additional source)
Gephyrocapsa huxleyi (Lohmann) P.Reinhardt, 1972 (basis of record)
Gephyrocapsa huxleyi (Lohmann) P.Reinhardt, 1972 (additional source)
Goniaceae (Pascher) Pascher, 1931 (basis of record)
Gonium O.F.Müller, 1773 (basis of record)
Gonium sociale (Dujardin) Warming, 1876 accepted as Tetrabaena socialis (Dujardin) H.Nozaki & M.Itoh, 1994 (basis of record)
Gonyaulacaceae Lindemann, 1928 (additional source)
Gonyaulax Diesing, 1866 (additional source)
Gonyaulax spinifera (Claparède & Lachmann) Diesing, 1866 (additional source)
Gymnodinium F.Stein, 1878 (additional source)
Gymnodinium heterostriatum Kofoid & Swezy, 1921 (additional source)
Gymnodinium marinum Kent, 1880 (additional source)
Gymnodinium mikimotoi Miyake & Kominami ex Oda, 1935 accepted as Karenia mikimotoi (Miyake & Kominami ex Oda) Gert Hansen & Moestrup, 2000 (additional source)
Gymnodinium simplex (Lohmann) Kofoid & Swezy, 1921 accepted as Protodinium simplex Lohmann, 1908 (basis of record)
Gymnodinium simplex (Lohmann) Kofoid & Swezy, 1921 accepted as Protodinium simplex Lohmann, 1908 (additional source)
Gyrodiniaceae Moestrup & Calado, 2018 (basis of record)
Gyrodinium Kofoid & Swezy, 1921 (additional source)
Gyrodinium britannia Kofoid & Swezy, 1921 (additional source)
Gyrodinium lacryma (Meunier) Kofoid & Swezy, 1921 (additional source)
Gyrodinium resplendens Hulburt, 1957 accepted as Barrufeta resplendens (Hulburt) H.Gu, Z.Luo & K.N.Mertens, 2015 (basis of record)
Gyrodinium resplendens Hulburt, 1957 accepted as Barrufeta resplendens (Hulburt) H.Gu, Z.Luo & K.N.Mertens, 2015 (additional source)
Gyrodinium spirale (Bergh) Kofoid & Swezy, 1921 (additional source)
Haptophytina (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