• Asterionella bleakeleyi W.Smith, 1856
• Asterionella bleakeleyi var. notata Grunow, 1867 (uncertain > unassessed)
• Asterionella formosa Hassall, 1850
• Asterionella formosa var. acaroides Lemmermann, 1903 (uncertain > unassessed)
• Asterionella formosa var. gracillima (Hanztsch) Grunow, 1881 accepted as Diatoma gracillimum Hantzsch in Rabenhorst, 1861
• Asterionella frauenfeldii Grunow, 1863 represented as Thalassionema frauenfeldii (Grunow) Tempère & Peragallo, 1910
• Asterionella glacialis Castracane, 1886 (uncertain > unassessed)
• Asterionella gracillima (Hantzsch) Heiberg, 1863 (uncertain > unassessed)
• Asterionella gracillima f. tabellarioides Cleve-Euler, 1910 (uncertain > unassessed)
• Asterionella japonica Cleve, 1882 (uncertain > unassessed)
• Asterionella kariana Grunow, 1880 (uncertain > unassessed)
• Asterionella notata Grunow ex Van Heurck, 1881 accepted as Asterionella bleakeleyi var. notata Grunow, 1867
• Asterionella zasuminensis (Cabejszekowna) Lundh-Almestrand, 1954 accepted as Fragilaria zasuminensis Cabejszekówna, 1937
• Asterionellopsis glacialis (Castracane) Round, 1990 accepted as Asterionella glacialis Castracane, 1886
• Asterionellopsis kariana (Grunow) Round, 1990 accepted as Asterionella kariana Grunow, 1880
• Asteroplanus karianus (Grunow) C.Gardner & R.M.Crawford, 1997 accepted as Asterionella kariana Grunow, 1880
• Bleakeleya notata (Grunow) Round, 1990 accepted as Asterionella bleakeleyi var. notata Grunow, 1867
• Catacombas gaillonii (Bory de Saint-Vincent) D.M.Williams & Round, 1986 accepted as Navicula gaillonii Bory de Saint-Vincent, 1824
• Catacombas obtusa (Pantocsek) P.J.M.Snoeijs, 1991 accepted as Synedra fasciculata var. obtusa Pantocsek, 1889 †
• Ceratoneis closterium Ehrenberg, 1839 (uncertain > unassessed)
• Ceratoneis fasciola Ehrenberg, 1839 (uncertain > unassessed)
• Ceratoneis gracilis Brébisson ex Kützing, 1849 (uncertain > unassessed)
• Ceratoneis longissima Brébisson, 1849 (uncertain > unassessed)
• Ctenophora pulchella (Ralfs ex Kützing) D.M.Williams & Round, 1986 (uncertain > unassessed)
• Ctenophora pulchella var. lanceolata (O'Meara) L.Bukhtiyarova, 1995 accepted as Synedra pulchella f. lanceolata O'Meara, 1875
• Diatoma arcuatum Lyngbye in Hornemann, 1818 (uncertain > unassessed)
• Diatoma auritum Lyngbye, 1819 (uncertain > unassessed)
• Diatoma constricta (Grunow) D. M. Williams, 1985 (uncertain > unassessed)
• Diatoma crystallinum C.A. Agardh, 1824 (uncertain > unassessed)
• Diatoma ehrenbergii Kützing, 1844 (uncertain > unassessed)
• Diatoma elongatum (Lyngbye) C.A. Agardh, 1824 accepted as Diatoma tenue var. elongatum Lyngbye, 1819
• Diatoma elongatum subsp. tenuis (Agardh) Van Heurck accepted as Diatoma tenue C. Agardh, 1812
• Diatoma elongatum var. actinastroides Krieger, 1927 (uncertain > unassessed)
• Diatoma elongatum var. hybrida (Grunow) Cleve-Euler, 1912 accepted as Diatoma tenue var. hybrida Grunow in Van Heurck, 1881
• Diatoma elongatum var. subsalsa Cleve-Eule, 1912 (uncertain > unassessed)
• Diatoma elongatum var. subsalsa f. curta Cleve-Euler, 1912 accepted as Diatoma moniliformis Kützing, 1833
• Diatoma elongatum var. tenuis (C.A. Agardh) Van Heurck, 1885 accepted as Diatoma tenue C. Agardh, 1812
• Diatoma fasciculata C.A.Agardh, 1812 accepted as Tabularia fasciculata (C.Agardh) D.M.Williams & Round, 1986
• Diatoma fasciculatum C.A. Agardh, 1812 (uncertain > unassessed)
• Diatoma fenestratum Lyngbye, 1819 (uncertain > unassessed)
• Diatoma hyalinum Kützing, 1844 (uncertain > unassessed)
• Diatoma hyemalis (Roth) Heiberg, 1863
• Diatoma hyemalis var. mesodon (Ehrenberg) Grunow, 1862 accepted as Diatoma mesodon (Ehrenberg) Kützing, 1844
• Diatoma marinum Lyngbye, 1819 (uncertain > unassessed)
• Diatoma mesodon (Ehrenberg) Kützing, 1844 (uncertain > unassessed)
• Diatoma moniliformis Kützing, 1833
• Diatoma ovalis Fricke in Schmidt et al., 1906 (uncertain > unassessed)
• Diatoma tabulatum C.Agardh, 1832 accepted as Tabularia tabulata (C.Agardh) Snoeijs, 1992
• Diatoma tenue C. Agardh, 1812 (uncertain > unassessed)
• Diatoma tenue var. asterionelloides Reichelt accepted as Diatoma tenue C. Agardh, 1812
• Diatoma tenue var. elongatum Lyngbye, 1819 (uncertain > unassessed)
• Diatoma tenue var. hybrida Grunow in Van Heurck, 1881 (uncertain > unassessed)
• Diatoma tenue var. minor Grunow, 1862 accepted as Diatoma moniliformis Kützing, 1833
• Diatoma tenuis C.Agardh, 1812
• Diatoma tenuis var. elongata Lyngbye, 1819 accepted as Diatoma tenuis C.Agardh, 1812
• Diatoma tenuis var. moniliformis Kützing, 1833 accepted as Diatoma moniliformis Kützing, 1833
• Diatoma vulgare Bory de Saint-Vincent, 1831 accepted as Diatoma vulgaris Bory de Saint-Vincent, 1824
• Diatoma vulgare var. capitulata Grunow, 1862 accepted as Diatoma vulgaris var. capitulata Grunow, 1862
• Diatoma vulgare var. constricta Grunow in Van Heurck, 1881 accepted as Diatoma vulgaris var. constricta Grunow, 1881
• Diatoma vulgare var. ehrenbergii (Kützing) Grunow, 1862 accepted as Diatoma ehrenbergii Kützing, 1844
• Diatoma vulgare var. ovalis (Fricke) Hustedt, 1930 accepted as Diatoma ovalis Fricke in Schmidt et al., 1906
• Diatoma vulgare var. producta Grunow, 1862 accepted as Diatoma vulgaris var. producta Grunow, 1862
• Diatoma vulgare var. vulgare accepted as Diatoma vulgaris var. vulgaris Bory de Saint-Vincent, 1824
• Diatoma vulgaris Bory de Saint-Vincent, 1824
• Diatoma vulgaris var. capitulata Grunow, 1862 (uncertain > unassessed)
• Diatoma vulgaris var. constricta Grunow, 1881 (uncertain > unassessed)
• Diatoma vulgaris var. producta Grunow, 1862
• Diatoma vulgaris var. vulgaris Bory de Saint-Vincent, 1824 (uncertain > unassessed)
• Fossula arctica G.R.Hasle, E.E.Syvertsen & C.H.von Quillfeldt, 1996 accepted as Fossulaphycus arcticus Blanco, 2020
• Fossulaphycus arcticus Blanco, 2020
• Fragilaria acus (Kützing) Lange-Bertalot in Krammer & Lange-Bertalot, 2000 (uncertain > unassessed)
• Fragilaria alpestris Krasske ex Hustedt, 1931
• Fragilaria amphicephaloides Lange-Bertalot, 2013
• Fragilaria atomus Hustedt, 1931 (uncertain > unassessed)
• Fragilaria berolinensis (Lemmermann) Lange-Bertalot, 1993 accepted as Synedra berolinensis var. berolinensis Lemmermann, 1900
• Fragilaria biceps (Kützing) Lange-Bertalot, 1991 accepted as Ulnaria biceps (Kützing) P.Compère, 2001 accepted as Synedra biceps f. biceps Kützing, 1844
• Fragilaria binalis Ehrenberg, 1854 (uncertain > unassessed)
• Fragilaria binodis Ehrenberg, 1854 (uncertain > unassessed)
• Fragilaria brevistriata Grunow, 1885
• Fragilaria brevistriata f. brevistriata Grunow in Van Heurck, 1885 (uncertain > unassessed)
• Fragilaria brevistriata var. inflata (Pantocsek) Hustedt, 1930 accepted as Pseudostaurosira brevistriata var. inflata (Pantocsek) M.B.Edlund, 1994 accepted as Fragilaria inflata Pantocsek, 1902
• Fragilaria brevistriata var. trigibba (Pantocsek) Hustedt, 1930 accepted as Fragilaria trigibba Pantocsek, 1902
• Fragilaria capitata (Ehrenberg) Lange-Bertalot, 1980 accepted as Synedra capitata f. capitata Ehrenberg, 1836
• Fragilaria capucina Desmazières, 1830
• Fragilaria capucina subsp. rumpens (Kützing) Lange-Bertalot, 1993
• Fragilaria capucina var. amphicephala (Kützing) Lange-Bertalot ex Bukhtiyarova, 1995 accepted as Synedra amphicephala var. amphicephala Kützing, 1844
• Fragilaria capucina var. capucina
• Fragilaria capucina var. gracilis (Østrup) Hustedt, 1950 accepted as Fragilaria gracilis Østrup, 1910
• Fragilaria capucina var. mesolepta (Rabenhorst) Rabenhorst, 1864
• Fragilaria capucina var. rumpens (Kützing) Lange-Bertalot ex Bukhtiyarova, 1995 accepted as Synedra rumpens var. rumpens Kützing, 1844
• Fragilaria capucina var. vaucheriae (Kützing) Lange-Bertalot, 1980 accepted as Exilaria vaucheriae Kützing, 1833
• Fragilaria construens (Ehrenberg) Grunow, 1862
• Fragilaria construens f. binodis (Ehrenberg) Hustedt, 1957 accepted as Navicula binodis Ehrenberg, 1840 accepted as Neidiomorpha binodis (Ehrenberg) M.Cantonati, Lange-Bertalot & N.Angeli, 2010
• Fragilaria construens f. subsalina (Hustedt) Hustedt, 1957 (uncertain > unassessed)
• Fragilaria construens f. venter (Ehrenberg) Hustedt, 1957 accepted as Fragilaria venter var. venter Ehrenberg, 1854
• Fragilaria construens var. binodis (Ehrenberg) Grunow, 1862 (uncertain > unassessed)
• Fragilaria construens var. subsalina Hustedt, 1925 accepted as Pseudostaurosira subsalina (Hustedt) E.A.Morales, 2005 accepted as Fragilaria construens f. subsalina (Hustedt) Hustedt, 1957
• Fragilaria construens var. triundulata Riechelt, 1899 (uncertain > unassessed)
• Fragilaria construens var. venter (Ehrenberg) Grunow, 1881 accepted as Staurosira venter (Ehrenberg) Cleve & Moeller, 1879 accepted as Fragilaria venter var. venter Ehrenberg, 1854
• Fragilaria crotonensis Kitton, 1869