Achnanthes Bory, 1822 (additional source)
Achnanthes brevipes C.Agardh, 1824 (additional source)
Achnanthes brevipes var. intermedia (Kützing) Cleve, 1895 accepted as Achnanthes intermedia Kützing, 1833 (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 delicatula subsp. hauckiana (Grunow) Lange-Bertalot & Ruppel, 1980 accepted as Planothidium hauckianum (Grunow) Round & Bukhtiyarova, 1996 (basis of record)
Achnanthes hauckiana Grunow, 1880 (source of synonymy)
Achnanthes hauckiana var. rostrata Schulz, 1926 (additional source)
Achnanthes intermedia Kützing, 1833 (additional source)
Achnanthes longipes C.Agardh, 1824 (additional source)
Achnanthes obliqua (Gregory) Hustedt, 1924 accepted as Gololobovia obliqua (W.Gregory) Kulikovskiy, Glushchenko & Kociolek in Kulikovskiy et al., 2020 (basis of record)
Achnanthes subsessilis Kützing, 1833 accepted as Achnanthes brevipes var. intermedia (Kützing) Cleve, 1895 accepted as Achnanthes intermedia Kützing, 1833 (additional source)
Achnanthes taeniata Grunow, 1880 accepted as Pauliella taeniata (Grunow) F.E.Round & P.W.Basson, 1997 (additional source)
Actinocyclus C.G. Ehrenberg, 1837 (additional source)
Actinocyclus normanii (Gregory) Hustedt, 1957 (additional source)
Actinocyclus normanii f. subsalsus (Juhlin-Dannfelt) Hustedt (additional source)
Actinocyclus octonarius Ehrenberg, 1837 accepted as Actinoptychus octonarius (Ehrenberg) Kützing, 1844 accepted as Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (basis of record)
Actinocyclus octonarius var. octonarius Ehrenberg, 1837 (additional source)
Actinocyclus senarius Ehrenberg, 1838 (additional source)
Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Actinoptychus splendens (Shadbolt) Ralfs ex Pritchard, 1861 (basis of record)
Actinoptychus undulatus (J.W.Bailey) Ralfs, 1861 accepted as Actinoptychus senarius (Ehrenberg) Ehrenberg, 1843 accepted as Actinocyclus senarius Ehrenberg, 1838 (additional source)
Amphipleura F.T. Kützing, 1844 (additional source)
Amphipleura pellucida (Kützing) Kützing, 1844 (additional source)
Amphiprora alata (Ehrenberg) Kützing, 1844 accepted as Entomoneis alata (Ehrenberg) Ehrenberg, 1845 (basis of record)
Amphiprora duplex Donkin, 1858 (basis of record)
Amphiprora kjellmanii Cleve, 1880 accepted as Entomoneis kjellmanii (Cleve) Poulin & Cardinal, 1983 accepted as Amphiprora kjellmanii var. kjellmanii Cleve in Cleve & Grunow, 1880 (additional source)
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 (additional source)
Amphiprora surirelloides Hendey, 1951 (basis of record)
Amphora coffeaeformis (C.Agardh) Kützing, 1844 accepted as Halamphora coffeiformis (C.Agardh) Levkov, 2009 (additional source)
Amphora costata W.Smith, 1853 accepted as Halamphora costata (W.Smith) Levkov, 2009 (basis of record)
Amphora laevis Gregory, 1857 (additional source)
Amphora laevis var. laevissima (Greg.) Cleve, 1896 (basis of record)
Amphora ovalis (Kützing) Kützing, 1844 (additional source)
Amphora robusta Gregory, 1857 (basis of record)
Asterionella A.H. Hassall, 1850 (basis of record)
Asterionella formosa Hassall, 1850 (additional source)
Asterionella formosa var. gracillima (Hanztsch) Grunow, 1881 accepted as Diatoma gracillimum Hantzsch in Rabenhorst, 1861 (additional source)
Asterionella glacialis Castracane, 1886 (additional source)
Asterionella gracillima (Hantzsch) Heiberg, 1863 (additional source)
Asterionella japonica Cleve, 1882 (additional source)
Asterionella kariana Grunow, 1880 (additional source)
Asteromphalus C.G. Ehrenberg, 1844 (basis of record)
Attheya T. West, 1860 (additional source)
Attheya decora T.West, 1860 (additional source)
Aulacoseira G.H.K. Thwaites, 1848 (basis of record)
Aulacoseira ambigua (Grunow) Simonsen, 1979 (additional source)
Aulacoseira distans (Ehrenberg) Simonsen, 1979 † (additional source)
Aulacoseira granulata (Ehrenberg) Simonsen, 1979 (additional source)
Aulacoseira granulata var. angustissima (O.F.Müller) Simonsen, 1979 accepted as Melosira granulata f. angustissima Otto Müller, 1899 (additional source)
Aulacoseira islandica (O.Müller) Simonsen, 1979 (additional source)
Aulacoseira italica (Ehrenberg) Simonsen, 1979 (additional source)
Auliscus C.G. Ehrenberg, 1843 (basis of record)
Auliscus sculptus (W.Smith) Brightwell, 1860 accepted as Eupodiscus sculptus W.Smith, 1853 (additional source)
Bacillaria paradoxa J.F.Gmelin, 1791 accepted as Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 (additional source)
Bacillaria paxillifer (O.F.Müller) T.Marsson, 1901 accepted as Bacillaria paxillifera (O.F.Müller) T.Marsson, 1901 (additional source)
Bacteriastrum elongatum Cleve, 1897 (additional source)
Bacteriastrum hyalinum Lauder, 1864 (additional source)
Bellerochea H. Van Heurck, 1885 (additional source)
Bellerochea malleus (Brightwell) Van Heurck, 1885 (additional source)
Berkeleya rutilans (Trentepohl ex Roth) Grunow, 1880 (additional source)
Biddulphia S.F. Gray, 1821 (additional source)
Biddulphia alternans (Bailey) Van Heurck, 1885 accepted as Trigonium alternans (Bailey) A.Mann, 1907 accepted as Triceratium alternans f. alternans J.W. Bailey, 1851 (additional source)
Biddulphia biddulphiana (J.E.Smith) Boyer, 1900 (additional source)
Biddulphia mobiliensis (J.W.Bailey) Grunow, 1882 accepted as Trieres mobiliensis (J.W.Bailey) Ashworth & E.C.Theriot in Ashworth, Nakov & E.C.Theiriot, 2013 (source of synonymy)
Biddulphia reticulum (Ehrenberg) Boyer, 1900 accepted as Triceratium reticulum f. reticulum Ehrenberg, 1844 (basis of record)
Brachysira vitrea (Grunow) R.Ross, 1986 accepted as Gomphonema vitreum Grunow, 1878 (new combination reference)
Brebissonia boeckii (Ehrenberg) E.O'Meara, 1875 accepted as Cocconema boeckii Ehrenberg, 1838 (additional source)
Caloneis limosa (Kützing) R.M.Patrick, 1966 accepted as Navicula limosa f. limosa Kützing, 1844 (basis of record)
Caloneis linearis (Grunow) Boyer, 1927 accepted as Navicula linearis Grunow, 1860 (basis of record)
Caloneis permagna (Bailey) Cleve, 1894 (additional source)
Campylodiscus C.G. Ehrenberg ex F.T. Kützing, 1844 (additional source)
Campylodiscus echeneis Ehrenberg ex Kützing, 1844 accepted as Coronia echeneis (Ehrenberg ex Kützing) Ehrenberg, 1912 (additional source)
Campylodiscus fastuosus Ehrenberg, 1845 (additional source)
Campylodiscus ralfsii W.Smith, 1853 (basis of record)
Cerataulina pelagica (Cleve) Hendey, 1937 (additional source)
Ceratoneis closterium Ehrenberg, 1839 (additional source)
Chaetoceros affinis Lauder, 1864 (additional source)
Chaetoceros atlanticus Cleve, 1873 (additional source)
Chaetoceros borealis Bailey, 1854 (additional source)
Chaetoceros brevis F.Schütt, 1895 (additional source)
Chaetoceros ceratosporus Ostenfeld, 1910 (additional source)
Chaetoceros cinctus Gran, 1897 (additional source)
Chaetoceros compressus Lauder, 1864 (additional source)
Chaetoceros concavicornis Mangin, 1917 (additional source)
Chaetoceros constrictus Gran, 1897 (additional source)
Chaetoceros contortus Schütt, 1895 (source of synonymy)
Chaetoceros convolutus Castracane, 1886 (additional source)
Chaetoceros costatus Pavillard, 1911 (additional source)
Chaetoceros curvisetus Cleve, 1889 (additional source)
Chaetoceros danicus Cleve, 1889 (additional source)
Chaetoceros debilis Cleve, 1894 emend Xu, Y.Li & Lundholm in Xu et al., 2020 (additional source)
Chaetoceros decipiens Cleve, 1873 (additional source)
Chaetoceros densus (Cleve) Cleve, 1899 (additional source)
Chaetoceros diadema (Ehrenberg) Gran, 1897 accepted as Syndendrium diadema Ehrenberg, 1854 † (additional source)
Chaetoceros didymus Ehrenberg, 1845 (additional source)
Chaetoceros diversus Cleve, 1873 (additional source)
Chaetoceros furcellatus Yendo, 1911 (additional source)
Chaetoceros holsaticus F.Schütt, 1895 (additional source)
Chaetoceros ingolfianus Ostenfeld, 1902 (additional source)

British Isles for Achnanthes longipes C.Agardh, 1824 

 Authority

 for Amphora arenicola Grunow, 1895

Cleve, 1896 [details]

 Authority

 for Chaetoceros gracilis Schütt, 1895

non Chaetoceros gracilis Pant., 1892 [details]

 Authority

 for 

non Lemm., 1904 [details]

 Classification

 for Chaetoceros affinis var. willei (Gran) Hustedt, 1930

Synonymised with Chaetoceros willei according to B. Hartley. [details]

 Identification

 for Achnanthes lanceolata var. elliptica Cleve, 1891

Considerd as a variety Achnanthes laceolata var elliptica [details]

 Identification

 for Amphora laevis var. laevissima (Gregory) Cleve, 1896

Considered as a variety instead of subspecies: Amphora laevis var leavissima (Gregory) Cleve, 1896 [details]

 Spelling

 for Amphora dubia Gregory, 1857

Amphora dibia Gregory, 1857 [details]

 Spelling

 for Chaetoceros borealis var. densum Cleve, 1897

Referred to as Chaetoceros borealis densus by B. Hartly. [details]

 Spelling

 for Chaetoceros ceratosporus Ostenfeld, 1910

Spelled as Chaetoceros ceratosporus. [details]

 Spelling

 for Chaetoceros contortus Schütt, 1895

Spelled as Chaetoceros contortus [details]

 Spelling

 for Chaetoceros ingolfianus Ostenfeld, 1902

Spelled as Chaetoceros ingolfianus [details]

 Spelling

 for Navicula kotschyi Grunow, 1860

N. kotschii. [details]

 Synonymy

 for Amphora excisa Gregory, 1857

synonymised with Amphora laevis [details]

 Synonymy

 for Amphora graeffeana Hendey, 1973

This is a new name for Amphora graeffi (Grunow) Cleve 1896, non A. graeffi Grunow ex Schmidt, 1875 [details]

 Synonymy

 for Amphora quadrata Gregory, 1857

Synonymised with Amphora pussio [details]

 Synonymy

 for Auricula staurophora Karsten, 1889

Synonymised with Auricula minuta [details]

 Synonymy

 for 

It concerns the following synonymised species: Chaetoceros gracilis sensu Apstein, 1909, non Schütt, 1895, nec ... [details]

 Synonymy

 for Navicula maxima Gregory, 1855

Also mentioned as syn. Of N. marnieri Manguin, 1957. [details]

 Validity

 for Navicula cancellata Donkin, 1872

Syn. Of N. retusa cancellata according to Hartley (1986). [details]