Achnanthes Bory, 1822 (additional source)
Achnanthes biasolettiana Grunow, 1880 accepted as Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (basis of record)
Achnanthes biasolettiana Grunow, 1880 accepted as Achnanthidium pyrenaicum (Hustedt) H.Kobayasi, 1997 accepted as Achnanthes pyrenaica var. pyrenaica Hustedt, 1939 (source of synonymy)
Achnanthes brevipes C.Agardh, 1824 (additional source)
Achnanthes brevipes var. brevipes Agardh, 1824 (additional source)
Achnanthes brevipes var. parvula (Kützing) Cleve, 1895 accepted as Achnanthes parvula Kützing, 1844 (additional source)
Achnanthes clevei Grunow, 1880 accepted as Karayevia clevei (Grunow) Round & Bukhtiyarova, 1999 (additional source)
Achnanthes delicatula (Kützing) Grunow in Cleve & Grunow, 1880 accepted as Planothidium delicatulum (Kützing) Round & Bukhtiyarova, 1996 accepted as Achnanthidium delicatulum f. delicatulum Kützing, 1844 (additional source)
Achnanthes dispar Cleve, 1891 accepted as Planothidium dispar (Cleve) Witkowski, Lange-Bertalot & Metzeltin, 2000 accepted as Achnanthes dispar var. dispar Cleve, 1891 (basis of record)
Achnanthes exigua Grunow, 1880 (additional source)
Achnanthes hauckiana Grunow, 1880 (additional source)
Achnanthes longipes C.Agardh, 1824 (additional source)
Achnanthes microcephala (Kützing) Grunow, 1880 accepted as Achnanthidium microcephalum Kützing, 1844 (source of synonymy)
Achnanthes minutissima Kützing, 1833 (basis of record)
Achnanthes parvula Kützing, 1844 (additional source)
Achnanthidium F.T. Kützing, 1844 (additional source)
Achnanthidium microcephalum Kützing, 1844 (basis of record)
Achnanthidium minutissimum (Kützing) Czarnecki, 1994 accepted as Achnanthes minutissima var. minutissima Kützing, 1833 (basis of record)
Actinocyclus C.G. Ehrenberg, 1837 (additional source)
Actinocyclus ehrenbergii Ralfs, 1861 (source of synonymy)
Actinocyclus ehrenbergii var. ralfsii (W.Smith) Hustedt, 1929 accepted as Eupodiscus ralfsii var. ralfsii W. Smith, 1856 (source of synonymy)
Actinocyclus ehrenbergii var. tenella (Brébisson) Hustedt, 1929 accepted as Eupodiscus tenellus Brébisson, 1854 (basis of record)
Actinocyclus ehrenbergii var. tenella (Brébisson) Hustedt, 1929 accepted as Eupodiscus tenellus Brébisson, 1854 (source of synonymy)
Actinocyclus normanii (Gregory) Hustedt, 1957 (additional source)
Actinocyclus octonarius Ehrenberg, 1837 accepted as Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (additional source)
Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (basis of record)
Actinocyclus octonarius var. ralfsii (W.Smith) Hendey, 1954 accepted as Eupodiscus ralfsii var. ralfsii W. Smith, 1856 (additional source)
Actinocyclus octonarius var. tenellus (Brébisson) Hendey, 1954 accepted as Eupodiscus tenellus Brébisson, 1854 (additional source)
Actinocyclus senarius Ehrenberg, 1838 (basis of record)
Actinocyclus senarius Ehrenberg, 1838 (source of synonymy)
Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Actinoptychus splendens (Shadbolt) Ralfs ex Pritchard, 1861 (additional source)
Actinoptychus undulatus (J.W.Bailey) Ralfs, 1861 accepted as Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (basis of record)
Actinoptychus undulatus (J.W.Bailey) Ralfs, 1861 accepted as Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (source of synonymy)
Amphipleura F.T. Kützing, 1844 (additional source)
Amphipleura rutilans (Trentepohl ex Roth) Cleve, 1894 accepted as Berkeleya rutilans (Trentepohl ex Roth) Grunow, 1880 (additional source)
Amphiprora C.G. Ehrenberg, 1843 (additional source)
Amphiprora alata (Ehrenberg) Kützing, 1844 accepted as Entomoneis alata (Ehrenberg) Ehrenberg, 1845 (additional source)
Amphiprora complexa Gregory, 1857 (additional source)
Amphiprora hyalina Eulenstein ex Van Heurck, 1880 (additional source)
Amphiprora lepidoptera Gregory, 1857 accepted as Plagiotropis lepidoptera (Gregory) Kuntze, 1898 (basis of record)
Amphiprora lepidoptera Gregory, 1857 accepted as Plagiotropis lepidoptera (Gregory) Kuntze, 1898 (source of synonymy)
Amphiprora paludosa W.Smith, 1853 accepted as Entomoneis paludosa (W.Smith) Reimer, 1975 (additional source)
Amphiprora paludosa var. paludosa W. Smith, 1853 accepted as Entomoneis paludosa (W.Smith) Reimer, 1975 (basis of record)
Amphora C.G. Ehrenberg ex F.T. Kützing, 1844 (additional source)
Amphora coffeaeformis (C.Agardh) Kützing, 1844 accepted as Halamphora coffeiformis (C.Agardh) Levkov, 2009 (additional source)
Amphora commutata Grunow, 1880 (basis of record)
Amphora copulata (Kützing) Schoeman & R.E.M.Archibald, 1986 accepted as Frustulia copulata Kützing, 1833 (basis of record)
Amphora delicatissima Krasske, 1930 (basis of record)
Amphora insecta Grunow ex A.Schmidt, 1876 (basis of record)
Amphora insecta Grunow ex A.Schmidt, 1876 (source of synonymy)
Amphora lineolata Ehrenberg, 1838 (additional source)
Amphora micrometra Giffen emend. Acs, Kiss & Levkov in Acs et al., 2011 (basis of record)
Amphora ovalis (Kützing) Kützing, 1844 (additional source)
Amphora pediculus (Kützing) Grunow ex A.Schmidt, 1875 (additional source)
Amphora proteus Gregory, 1857 (additional source)
Amphora robusta Gregory, 1857 (additional source)
Anomoeoneis E. Pfitzer, 1871 (additional source)
Anomoeoneis costata (Kützing) Hustedt, 1959 accepted as Navicula costata var. costata Kützing, 1844 (basis of record)
Anomoeoneis costata (Kützing) Hustedt, 1959 accepted as Navicula costata var. costata Kützing, 1844 (source of synonymy)
Aphanothece Nägeli, 1849 (basis of record)
Aphanothece saxicola Nägeli, 1849 (basis of record)
Ardissonea G. De Notaris in G. De Notaris & F. Baglietto, 1870 (basis of record)
Arthrospira Sitzenberger ex Gomont, 1892 (additional source)
Asterionella A.H. Hassall, 1850 (additional source)
Asterionella bleakeleyi W.Smith, 1856 (source of synonymy)
Asterionella bleakeleyi var. notata Grunow, 1867 (basis of record)
Asterionella bleakeleyi var. notata Grunow, 1867 (source of synonymy)
Asterionella frauenfeldii Grunow, 1863 represented as Thalassionema frauenfeldii (Grunow) Tempère & Peragallo, 1910 (basis of record)
Asterionella frauenfeldii Grunow, 1863 represented as Thalassionema frauenfeldii (Grunow) Tempère & Peragallo, 1910 (source of synonymy)
Asterionella glacialis Castracane, 1886 (source of synonymy)
Asterionella japonica Cleve, 1882 (source of synonymy)
Asterionella kariana Grunow, 1880 (source of synonymy)
Asterionella notata Grunow ex Van Heurck, 1881 accepted as Asterionella bleakeleyi var. notata Grunow, 1867 (source of synonymy)
Asterionellopsis F.E. Round in F.E. Round, R.M. Crawford & D.G. Mann, 1990 (additional source)
Asterionellopsis glacialis (Castracane) Round, 1990 accepted as Asterionella glacialis Castracane, 1886 (additional source)
Aulacoseira islandica (O.Müller) Simonsen, 1979 (additional source)
Aulacoseira italica (Ehrenberg) Simonsen, 1979 (basis of record)
Auliscus C.G. Ehrenberg, 1843 (additional source)
Auliscus sculptus (W.Smith) Brightwell, 1860 accepted as Eupodiscus sculptus W.Smith, 1853 (additional source)
Auricula A.F. Castracane, 1873 (additional source)
Auricula complexa (Gregory) Cleve, 1894 accepted as Amphiprora complexa Gregory, 1857 (additional source)
Auricula insecta (Grunow) A.Schmidt, 1894 accepted as Amphora insecta Grunow ex A.Schmidt, 1876 (additional source)
Auricula minuta Cleve, 1894 (additional source)
Azpeitia M. Peragallo in J. Tempère & H. Peragallo, 1912 (additional source)
Azpeitia nodulifera (A.W.F.Schmidt) G.A.Fryxell & P.A.Sims, 1986 (additional source)
Bacillaria J.F. Gmelin, 1788 (additional source)
Bacillaria paradoxa J.F.Gmelin, 1791 accepted as Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 accepted as Vibrio paxillifer O.F.Müller, 1786 (additional source)
Bacteriastrum G. Shadbolt, 1854 (additional source)
Bacteriastrum elongatum Cleve, 1897 (basis of record)
Bacteriastrum hyalinum Lauder, 1864 (basis of record)
Bacterosira H.H. Gran, 1900 (basis of record)
Bacterosira bathyomphala (Cleve) Syvertsen & Hasle, 1993 accepted as Coscinodiscus bathyomphalus Cleve, 1883 (basis of record)
Bellerochea H. Van Heurck, 1885 (additional source)
Bellerochea malleus (Brightwell) Van Heurck, 1885 (additional source)
Berkeleya R.K. Greville, 1827 (basis of record)
Berkeleya rutilans (Trentepohl ex Roth) Grunow, 1880 (additional source)
Biddulphia S.F. Gray, 1821 (additional source)
Biddulphia aurita (Lyngbye) Brébisson, 1838 accepted as Odontella aurita (Lyngbye) C.Agardh, 1832 (source of synonymy)
Biddulphia biddulphiana (J.E.Smith) Boyer, 1900 (basis of record)