DiatomBase
Between brackets is the number of accepted extant species
Click on "-" to collapse/hide all child taxa
Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
Click on "+" to expand/show all child taxa
Click to see the taxon details page
- Bacillariophyceae (5 958)
- Subclass Bacillariophyceae incertae sedis (189)
- Family Eustephaniaceae
- Genus Acanthodiscus Pant., 1892 †
- Genus Achnanthepyla Perag., 1921 (5)
- Genus Acigonium S. Komura, 1999 †
- Genus Actinoclava O. Müller, 1912 †
- Genus Actinodictyon J. Pantocsek, 1889 †
- Genus Actinodiscus R.K. Greville, 1863 †
- Genus Actinogonium C.G. Ehrenberg, 1847 †
- Genus Actinogramma C.G. Ehrenberg, 1872
- Genus Actinoneis P.T. Cleve, 1895
- Genus Actinophaenia G. Shadbolt, 1854
- Genus Actinostephanos G.K. Khursevich, 1989
- Genus Aggericorona S. Komura, 2006 †
- Genus Alloeoneis J. Schumann, 1867
- Genus Alloioneis J. Schumann ex P.T. Cleve, 1878 (1)
- Genus Alveolophora A.I. Moisseeva & T.L. Nevretdinova, 1990 †
- Genus Ambistria K.E. Lohman & G.W. Andrews, 1968 emend. Siver, 2019 †
- Genus Amblypyrgus R. Gersonde & D.M. Harwood, 1990 †
- Genus Amphicephalosperma Meunier (1)
- Genus Amphidiscus C.G. Ehrenberg, 1839 †
- Genus Amphipentas C.G. Ehrenberg, 1840 †
- Genus Amphiraphia J.-Y. Chen & H.-Z. Zhu, 1983
- Genus Amphitrite P.T. Cleve ex O. Kunze, 1891
- Genus Amphitropis L. Rabenhorst, 1868
- Genus Amphoropsis (Cleve) Mereschkowsky, 1901
- Genus Ancylopyrgus R. Gersonde & D.M. Harwood, 1990 †
- Genus Angulopyxidium A.G. Vologdin, 1962 †
- Genus Anisodiscus A. Grunow in J. Pantocsek, 1886 (1)
- Genus Anisoraphe R.E. Norris, 1971
- Genus Annellus J. Tempère in J. Tempère & H. Peragallo, 1908 †
- Genus Annularius S. Komura, 2005 †
- Genus Antelminellia F. Schütt, 1893
- Genus Anthemodiscus J.W. Barker & S.H. Meakin, 1944 †
- Genus Anuloplicata (Z.I.Glezer) Z.I.Glezer, 1992 †
- Genus Aplotella (Kützing) L. Agassiz, 1843
- Genus Aporidiscus Rattray in A. Grunow, 1889
- Genus Aporodiscus J. Rattray in A. Schmidt et al., 1890
- Genus Apteroe P.T. Cleve, 1891
- Genus Apterosoma S.Komura, 1997 †
- Genus Archaegladiopsis V.A. Nikolaev & D.M. Harwood, 1997
- Genus Archaegoniothecium J.Witkowski, D.M.Harwood & M.Kulikovskiy, 2012 †
- Genus Archeopantocsekia Borbas, 1893
- Genus Archepyrgus R. Gersonde & D.M. Harwood, 1990 †
- Genus Archimedea J.B.M. Bory de Saint-Vincent, 1824
- Genus Arcus A.P. Olshtynskaja, 1978 † accepted as Fossilarcus Blanco, 2020 †
- Genus Argonauta G. Karsten in A. Engler & K. Prantl, 1928
- Genus Aristella F.T. Kützing, 1834
- Genus Arthrogyra C.G. Ehrenberg ex Ralfs in Pritchard, 1861
- Genus Arthrotoma Corda, 1840
- Genus Asterodiscus A.S. Johnson, 1852
- Genus Asterosiga accepted as Astrosiga W.S.Kent
- Genus Astrosyne Ashworth & Lobban, 2012 (1)
- Genus Aulacocystis A.H. Hassall, 1845
- Genus Auriculopsis N.I. Hendey, 1964
- Genus Bacterosira H.H. Gran, 1900 (1)
- Genus Bactryllium O. Heer, 1853
- Genus Baculites J. Grüss, 1928
- Genus Badiaga Sprengel
- Genus Balanosa S. Komura, 1996 †
- Genus Basilicostephanus R. Gersonde & D.M. Harwood, 1990 †
- Genus Baxteria H. Van Heurck, 1896
- Genus Belonastrum (Lemmermann) F.E. Round & N.I. Maidana, 2001
- Genus Belonastrum E. Lemmermann, 1900
- Genus Belonidium C.G. Ehrenberg, 1854
- Genus Bifibulatia H. Takano, 1983 (1)
- Genus Bilingua R. Gersonde & D.M. Harwood, 1990 †
- Genus Bipalla Z.I. Gleser, 1992 †
- Genus Bogorovia A.P. Jousé, 1974 †
- Genus Bolewskia B. Kwiecinska & J. Sieminska, 2000 †
- Genus Bonea R. Ross & P.A. Sims, 1987 †
- Genus Botellus F. Schütt, 1900
- Genus Brachybaculites J. Grüss, 1928 †
- Genus Brasiliella C. Zimmermann S.J., 1918
- Genus Brenneckella H. Lohman, 1912
- Genus Brevilinea P.A. Siver, P.B. Hamilton & E.A. Morales, 2008 (1)
- Genus Brevisira K. Krammer, 2001
- Genus Brunia J. Tempère ex G.B. De Toni, 1894
- Genus Bruniella H. Van Heurck, 1896
- Genus Bruniopsis G. Karsten in A. Engler & K. Prantl, 1928
- Genus Calcothrix N.A. Desvaux in C.A. Agardh, 1830
- Genus Callimastogloia S. Komura, 2005 †
- Genus Calodiscus L. Rabenhorst, 1853
- Genus Calophyllum G. Shadbolt, 1854
- Genus Calyptosporium D.M. Harwood & R. Gersonde, 1990 †
- Genus Campylostylus G. Shadbolt ex C.S. Boyer, 1927
- Genus Capsula J. Brun, 1896 †
- Genus Carrodoria S.F.Gray corr.Kuntze, 1898
- Genus Castracania G.B. De Toni, 1892 †
- Genus Catillus N.I. Hendey, 1977
- Genus Cavitatus D.M. Williams, 1989 †
- Genus Centrodiscus Pantocsek, 1889
- Genus Centroporus J. Pantocsek, 1889 †
- Genus Ceratangula P.A. Sims, 2008 †
- Genus Ceratodiscus S.H. Meakin, 1938 †
- Genus Ceratophora Pantocsek, 1889
- Genus Chasea G D. Hanna, 1934 †
- Genus Cheloniodiscus J. Pantocsek, 1889 †
- Genus Chuniella G. Karsten, 1905
- Genus Cladogramma C.G. Ehrenberg, 1854 † (1)
- Genus Cladomphalus J.W.Bailey, 1894
- Genus Clavicula J. Pantocsek, 1886 †
- Genus Clavularia R.K. Greville, 1865 †
- Genus Clevamphora C. Mereschkowsky, 1903
- Genus Cleveia J. Pantocsek in J. Tempère, 1895
- Genus Clevia C. Mereschkowsky, 1902
- Genus Climacidium C.G. Ehrenberg, 1870
- Genus Climacosira A. Grunow, 1862
- Genus Clipeoparvus J. Woodbridge, E.J. Cox & N. Roberts in Woodbridge et al., 2010 (1)
- Genus Cocconeiopsis A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 (2)
- Genus Coenobiodiscus A.R. Loeblich III, W.W. Wight & W.M. Darley, 1968
- Genus Collumicylindrus S. Komura, 2005 †
- Genus Cometes H.Edsbagge, 1966
- Genus Comperiella K.Sabbe & W.Vyverman, 2001 (1)
- Genus Compositus V.N. Vekschina, 1960 †
- Genus Concentrodiscus G.C. Khursevich, A.I. Moisseeva & G.A. Sukhova, 1989
- Genus Confervea O.F. Müller, 1873
- Genus Corbellia N.I. Maidana & F.E. Round, 1999 (1)
- Genus Corinna P.A.C. Heiberg, 1863 †
- Genus Corona P. Lefebure & E. Chenevière, 1938 † accepted as Phycorona Blanco, 2020 †
- Genus Coronia C.G. Ehrenberg, 1840 (10)
- Genus Coronodiscus I. Suto, 2004 †
- Genus Cortinocornus Z.I. Glezer, 1984 †
- Genus Coscinophaena C.G. Ehrenberg, 1854
- Genus Coscinorima N.I. Strelnikova in N.I. Strelnikova & I.V. Makarova, 1999 †
- Genus Cosmiodiscus R.K. Greville, 1866 †
- Genus Costopyxis Z.I. Glezer, 1984 †
- Genus Cotyledon J. Brun, 1891
- Genus Coxia H. Lange-Bertalot & G. Moser in G. Moser, H. Lange-Bertalot & D. Metze, 1998 accepted as Eileencoxia S.Blanco & C.E.Wetzel, 2016
- Genus Craspedopleura M. Poulin, 1993
- Genus Craspedoporus R.K. Greville, 1863 †
- Genus Creania M.P Olney in Olney, Bohaty, Harwood & Scherer, 2009 †
- Genus Cristodiscus Z.I. Glezer & A.P. Olshtynskaya, 1994 †
- Genus Crossophialus D.M. Harwood & R. Gersonde, 1990 †
- Genus Crucidenticula F.Akiba & Y.Yanagisawa, 1986 †
- Genus Crystalia Sommerfeld in J.B.M. Bory de Saint-Vincent, 1824
- Genus Ctenophora A. de Brebisson ex F.T. Kützing, 1849
- Genus Cultria (D. Metzeltin & H. Lange-Bertalot) D. Metzeltin & H. Lange-Bertalot, 2007
- Genus Cultria D. Metzeltin & H. Lange-Bertalot, 1998
- Genus Cussia H.-J. Schrader, 1974
- Genus Cycloites J. Grüss, 1928
- Genus Cycloplea V.B.A. Trevisan di San Leon, 1848
- Genus Cyclosira H. Peragallo & M. Peragallo, 1907
- Genus Cyclostephanopsis L. Loginova, 1993 †
- Genus Cylindropyxis N.I. Hendey, 1964
- Genus Cymatodiscus N.I. Hendey, 1958
- Genus Cymatogonia A. Grunow, 1883
- Genus Cymatotheca N.I. Hendey, 1958
- Genus Cymbamphora P.T. Cleve, 1895
- Genus Cymbellopsis K. Krammer, 1997
- Genus Cymbophora (F.T. Kützing) A. de Brébisson, 1838
- Genus Cymbosira F.T. Kützing, 1844
- Genus Cypellachaetes D.M. Harwood & R. Gersonde, 1990 †
- Genus Dactylacanthis S. Komura, 1999 †
- Genus Dalai-Lama C. Mereschkowsky, 1906 (1)
- Genus Dandrelion P. Lefebure, 1947
- Genus Dasyangea D.M. Harwood & R. Gersonde, 1990 †
- Genus Debya J. Rattray, 1888
- Genus Debya J. Pantocsek, 1886
- Genus Dendrelion J. Pantocsek, 1928
- Genus Dendrella J.B.M. Bory de Saint-Vincent, 1822
- Genus Dendrogonia S. Komura, 2007 †
- Genus Detonia J. Frenguelli, 1949 accepted as Neodetonia S. Blanco, 2011
- Genus Dextradonator R. Ross & P.A. Sims, 1980 †
- Genus Diatoma A.P. de Candolle in Lamark & A.P. de Candolle, 1805
- Genus Diatomosira V.B.A. Trevisan di San Leon, 1848
- Genus Dichomenis C.G. Ehrenberg, 1862 (1)
- Genus Dichotropiscus S. Komura, 1995 †
- Genus Dickensoniaforma R.P. Scherer, 1997 †
- Genus Dickieia M.J. Berkeley ex F.T. Kützing, 1844
- Genus Dicladia C.G. Ehrenberg, 1844 †
- Genus Dicladiopsis G.B. De Toni, 1894
- Genus Dictyolampra C.G. Ehrenberg, 1847 †
- Genus Dictyopyxis C.G. Ehrenberg, 1844
- Genus Didymohelix J.W.Griffith
- Genus Dimeractis S. Komura, 2001 †
- Genus Dimerosira H. Peragallo in H. Peragallo & M. Peragallo, 1901
- Genus Diommatetras S. Komura, 2001 †
- Genus Diomphala C.G. Ehrenberg, 1842
- Genus Diprora S.P. Main, 2003 (1)
- Genus Disciferium A.G. Vologdin, 1962 †
- Genus Discodiscus Gombos A. M. Jr., 1980 †
- Genus Discoites J. Grüss, 1928
- Genus Disconeis P.T. Cleve, 1895
- Genus Discoplea C.G. Ehrenberg, 1844
- Genus Discosira L. Rabenhorst, 1853
- Genus Discus C. Stodder, 1879
- Genus Disiphonia C.G. Ehrenberg, 1854
- Genus Dispinodiscus I. Suto, 2004 †
- Genus Distichanthes C.G. Ehrenberg, 1854
- Genus Doryphora F.T. Kützing, 1844
- Genus Dossetia F. Azpeitia, 1911 †
- Genus Drepanotheca H.-J. Schrader ex Round, Crawford & Mann, 1990 †
- Genus Druridgia A.S. Donkin, 1861
- Genus Echinaria F.T. Kützing, 1844
- Genus Echinodiscus A. Mann, 1925
- Genus Ectodictyon G.C. Khursevich & G.P. Cherniaeva, 1989 †
- Genus Ehrenbergia A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 accepted as Ehrenbergiulva A. Witkowski, H. Lange-Bertalot & D. Metzeltin in A. Witkowski & H. Lange-Bertalot, 2004
- Genus Ehrenbergiulva A. Witkowski, H. Lange-Bertalot & D. Metzeltin in A. Witkowski & H. Lange-Bertalot, 2004
- Genus Emersonia J.W. Bailey, 1842
- Genus Encyonemopsis accepted as Encyonopsis K. Krammer, 1997
- Genus Endosigma A. de Brébisson in Orbigny, 1848
- Genus Endostauron Brébisson ex Möller, 1892
- Genus Endostauron A. Grunow, 1880
- Genus Entogonia R.K. Greville, 1863 (1)
- Genus Entomogaster C.G. Ehrenberg, 1871
- Genus Epiphalaina R.W. Holmes, S. Nagasawa & H. Takano, 1993
- Genus Epithelion J. Pantocsek, 1905
- Genus Epithema A. de Brébisson, 1838
- Genus Euceratoneis A. Grunow in L. Rabenhorst, 1865
- Genus Eumeridion F.T. Kützing, 1844
- Genus Eunophora W. Vyverman, K. Sabbe & D.G. Mann in W. Vyverman et al., 1998
- Genus Eunotiopsis A. Grunow in P.T. Cleve & J.D. Moller, 1879
- Genus Euphyllodium G. Shadbolt, 1854
- Genus Eupleuria G.A.W. Arnott, 1858
- Genus Eupodiscus C.G. Ehrenberg, 1844
- Genus Eupterotrum S.Komura, 1997 †
- Genus Eupyxidicula S.Blanco & C.E.Wetzel, 2016 (26)
- Genus Eurossia P.A. Sims in A.D. Mahood, J.A. Barron & P.A. Sims, 1993 †
- Genus Eustephanias S. Komura, 1999 †
- Genus Excentron J. Ralfs in A. Pritchard, 1861
- Genus Falcatella L. Rabenhorst, 1853 accepted as Fragilaria H.C. Lyngbye, 1819
- Genus Fenestrella R.K. Greville, 1863 †
- Genus Fibula Wm. Smith, 1859
- Genus Flexibiddulphia R. Simonsen, 1987 †
- Genus Fogedia A. Witkowski, H. Lange-Bertalot, D. Metzeltin & G. Bafana, 1997 (4)
- Genus Fontigonium P.A. Sims & N.I. Hendey, 1996
- Genus Fossilarcus Blanco, 2020 †
- Genus Fovirhombus S. Komura, 2005 †
- Genus Fragilariella N.I. Hendey, 1958
- Genus Fryxelliella A.K.S.K. Prasad, K.A. Riddle & R.J. Livingston, 1997 (1)
- Genus Furtheca S.Blanco & C.E.Wetzel, 2016 †
- Genus Fusiformella S. Komura, 2005 †
- Genus Fusotheca C. Mereschkowsky, 1878
- Genus Gaillonella J.B.M. Bory de Saint-Vincent, 1825 accepted as Melosira C.A. Agardh, 1824
- Genus Gallionella accepted as Gaillionella Bory de Saint-Vincent, 1826
- Genus Gato C.S.Lobban & J.N.Navarro, 2013 (1)
- Genus Gemellodiscus I. Suto, 2004 †
- Genus Giffenia F.E. Round & P.W. Basson, 1997 (1)
- Genus Girodella Gaillon ex P.J.F. Turpin, 1827
- Genus Gladiopsis R. Gersonde & D.M. Harwood, 1990 †
- Genus Gleseria E.G. Lupikina & L.M. Dolmatova, L.M., 1984 †
- Genus Gloeonema C.G. Ehrenberg, 1856
- Genus Gloionema C.A. Agardh, 1812
- Genus Glyphodiscus R.K. Greville, 1862
- Genus Golovenkinia N.I. Strelnikova, 1997 †
- Genus Gomphocaloneis F. Meister, 1932 accepted as Climaconeis A. Grunow, 1862
- Genus Gomphogramma A. Braun in L. Rabenhorst, 1853
- Genus Gomphonella L. Rabenhorst, 1853
- Genus Gomphonema C.A. Agardh, 1824
- Genus Goniothecium C.G. Ehrenberg, 1843 †
- Genus Grammatonema F.T. Kützing, 1845 (1)
- Genus Grayia E. Grove & J. Brun in A. Schmidt et al., 1892
- Genus Groentvedia N.I. Hendey, 1964
- Genus Grovea A. Schmidt ex Van Heurck, 1896 †
- Genus Grunoviella H. Van Heurck, 1896
- Genus Grunowia L. Rabenhorst, 1864 (6)
- Genus Grymaia J.W. Bailey ex L.W. Bailey, 1861
- Genus Gutwinskiella G.B. De Toni, 1894
- Genus Gyrocylindrus N.I. Strelnikova & V.A. Nikolaev, 1995 †
- Genus Gyropandorus S.Komura, 1997 †
- Genus Gyroptychus A. Schmidt in A. Schmidt et al., 1890 †
- Genus Halionyx C.G. Ehrenberg, 1844
- Genus Halonetrum H. Lohmann, 1919
- Genus Halopetitia S.Blanco & C.E.Wetzel, 2016 (1)
- Genus Halurina C. Zimmermann, 1918
- Genus Hamatusia S.R. Stidolph, 1993
- Genus Handmannia M. Peragallo in R. Handmann, 1913 (1)
- Genus Hanicella Lobban & Ashworth, 2014 (1)
- Genus Hantzschiopsidea J. Grüss, 1928
- Genus Harrisonii E.M.Nelson
- Genus Haynaldella J. Pantocsek, 1892
- Genus Haynaldia J. Pantocsek, 1889 accepted as Haynaldiopsis S.Blanco & C.E.Wetzel, 2016 †
- Genus Haynaldiella J. Pantocsek ex H. Van Heurck, 1896
- Genus Haynaldiopsis S.Blanco & C.E.Wetzel, 2016 † (1)
- Genus Heibergia R.K. Greville, 1865 †
- Genus Heliodiscus H. Van Heurck Fide G. Karsten in A. Engler & K. Prantl, 1928
- Genus Heliopelta C.G. Ehrenberg, 1844
- Genus Helisella A. Jurilj, 1949
- Genus Helissella Jurilj, 1949
- Genus Helminthopsidella P.C. Silva, 1970 †
- Genus Helminthopsis H. Van Heurck, 1896 accepted as Helminthopsidella P.C. Silva, 1970 †
- Genus Hemiaulus Ehrenberg, 1844 accepted as Eucampia C.G. Ehrenberg, 1839
- Genus Hemizoster C.G. Ehrenberg, 1844
- Genus Hendeya J.A. Long, D.P. Fuge & J. Smith, 1946
- Genus Hendeyscoresbya S.Blanco & C.E.Wetzel, 2016 (1)
- Genus Henseniella F. Schütt ex G.B. De Toni, 1894
- Genus Henshawia A. Mann, 1925
- Genus Hercotheca C.G. Ehrenberg, 1844 †
- Genus Heribaudia M. Peragallo in J. Heribaud, 1893 †
- Genus Heromphala P. Lefebure, 1947
- Genus Heroneis P. Lefebure, 1947
- Genus Hesslandia A. Cleve-Euler in A. Cleve-Euler & I. Hessland, 1947
- Genus Heterangion S. Komura, 2001 †
- Genus Heterocampa C.G. Ehrenberg, 1870 †
- Genus Heterodictyon R.K. Greville, 1863 †
- Genus Heteromphala C.G. Ehrenberg, 1859
- Genus Heteroneis P.T. Cleve, 1895
- Genus Heterostephania C.G. Ehrenberg, 1854 (1)
- Genus Himantidium C.G. Ehrenberg, 1840 (1)
- Genus Himantosoma V.B.A. Trevisan di San Leon, 1848
- Genus Homalodiscus A.S. Orsted, 1844
- Genus Hormophora A. Jurilj, 1957 (1)
- Genus Horodiscus G D. Hanna, 1927 †
- Genus Horstia J. Sieminska & B. Kwiecinska, 2002 †
- Genus Humbugodiscus J. Deby, 1890
- Genus Hustedtia F. Meister, 1932
- Genus Hustedtiella R. Simonsen, 1960
- Genus Huttonia E. Grove & G. Sturt, 1887
- Genus Hyalodictya C.G. Ehrenberg, 1871
- Genus Hyalodiscopsis T.F. Kozyrenko & T.V. Lativska, 1992
- Genus Hyalogramma M.Garcia, 2012 (1)
- Genus Hyalopyxis I.V. Makarova, 1989 †
- Genus Hyalosira F.T. Kützing, 1844 (1)
- Genus Hyalotrochus D.M. Harwood & R. Gersonde, 1990 †
- Genus Hydrolinum H.F. Link, 1820
- Genus Hydrosirella F. Hustedt, 1952 †
- Genus Hylobiblium Wolle, 1894
- Genus Hyperion Gombos A. M. Jr., 1983 †
- Genus Hystrix J.B.M. Bory de Saint-Vincent, 1822
- Genus Ikebea S. Komura, 1975 †
- Genus Imparvalvia S. Komura, 2007 †
- Genus Incisoria M. Hajos in M. Hajos & H. Stradner, 1975 †
- Genus Insilella C.G. Ehrenberg, 1845
- Genus Isodiscus J. Rattray, 1888
- Genus Isomeria Chevallier
- Genus Isthmiella P.T. Cleve, 1873
- Genus Janischia A. Grunow in H. Van Heurck, 1883
- Genus Jousea Z.I. Glezer, 1967
- Genus Kannoa S. Komura, 1980 †
- Genus Katahiraia S. Komura, 1976 †
- Genus Kentrodiscus J. Pantocsek, 1889 †
- Genus Kerkis R. Gersonde & D.M. Harwood, 1990 †
- Genus Kidoa S. Komura, 1979 †
- Genus Kozhowia M.S.Kulikowskiy & H.Lange-Bertalot, 2012 (5)
- Genus Kozloviella A.P. Jousé, 1973 †
- Genus Kreagra R. Gersonde & D.M. Harwood, 1990 †
- Genus Ktenodiscus J. Pantocsek, 1889 (25)
- Genus Kuemmerlea J.A. Krenner, 1926
- Genus Lacustriella H.Lange-Bertalot, M.S.Kulikovskiy & D.Metzeltin, 2012 (5)
- Genus Lamella J. Brun, 1894
- Genus Lamprotediscus J. Pantocsek, 1892 †
- Genus Lancineis G.W. Andrews, 1990 †
- Genus Lauderiopsis C.H. Ostenfeld & J. Schmidt, 1902
- Genus Lentiliforma S. Komura, 2006 †
- Genus Leptoscaphos H.-J. Schrader, 1969 †
- Genus Leudugeria J. Tempère ex H. Van Heurck, 1896 (2)
- Genus Libellus P.T. Cleve, 1873 (1)
- Genus Ligulatium A.G. Vologdin, 1962 †
- Genus Lingulatium
- Genus Lioneis C.G. Ehrenberg, 1861
- Genus Liostephania C.G. Ehrenberg, 1847 †
- Genus Liparogyra C.G. Ehrenberg, 1848
- Genus Liradiscus R.K. Greville, 1865 †
- Genus Liriogramma R.W. Kolbe, 1954
- Genus Lisitzinia A.P. Jousé, 1978 †
- Genus Lithobotrys C.G. Ehrenberg, 1844
- Genus Lobarzewskya V.B.A. Trevisan di San Leon, 1848
- Genus Lobodiscus Ye.G. Lupikina & G.K. Khursevich, 1991 †
- Genus Lomonycus S. Komura, 1996 †
- Genus Longinata M. Hajos in M. Hajos & H. Stradner, 1975 †
- Genus Lophotheca H.-J. Schrader, 1969 †
- Genus Lunella P. Snoeijs, 1996 (1)
- Genus Lunulina J.B.M. Bory de Saint-Vincent, 1822
- Genus Lyngbyea S.C. Sommerfelt, 1826
- Genus Lysicyclia C.G. Ehrenberg, 1856
- Genus Lysigonium H.F. Link, 1820
- Genus Macrora G D. Hanna, 1932 †
- Genus Maluina R. Ross & P.A. Sims, 1987 †
- Genus Mammidion J.A. Long, D.P. Fuge & J. Smith, 1946 †
- Genus Mammula G. Karsten in A. Engler & K. Prantl, 1928
- Genus Margaritoxon C. Janisch, 1862
- Genus Margaritum H. Moreira Filho, 1968 (1)
- Genus Mastodiscus J.W. Bailey, 1854
- Genus Mediaria V.S. Scheschukova-Poretzkaja, 1962 †
- Genus Melchersiela C. Teixeira, 1959
- Genus Melotomus Corda
- Genus Meretrosulus G D. Hanna, 1927 †
- Genus Meristosolen D.M. Harwood & R. Gersonde, 1990 †
- Genus Mesasterias C.G. Ehrenberg, 1872
- Genus Mesodictyopsis Khursevich, Iwashita, Kociolek & Fedenya in Khursevich et al., 2004 †
- Genus Micrampulla G D. Hanna, 1927 †
- Genus Microneis P.T. Cleve, 1895
- Genus Microorbis R. Gersonde & D.M. Harwood, 1990 †
- Genus Microsolenia H. Takano, 1998
- Genus Microspodiscus A. Grunow in H. Van Heurck, 1883
- Genus Microstigma (P.T. Cleve) F. Meister, 1919
- Genus Microtheca C.G. Ehrenberg, 1838 (1)
- Genus Miosira K. Krammer, H. Lange-Bertalot & W. Schiller, 1997 † accepted as Alveolophora A.I. Moisseeva & T.L. Nevretdinova, 1990 †
- Genus Mitralifer A.G. Vologdin, 1962 †
- Genus Moelleria P.T. Cleve, 1873
- Genus Moisseevia N.I. Strelnikova, 1997 †
- Genus Monema R.K. Greville, 1827
- Genus Monema M.J. Berkeley, 1833
- Genus Monile R. Ross & P.A. Sims, 1987 †
- Genus Monobrachia H.-J. Schrader in H.-J. Schrader & J. Fenner, 1976 †
- Genus Monocis P. Lefebure, 1947
- Genus Monocladia I. Suto, 2003 †
- Genus Monogramma C.G. Ehrenberg, 1843
- Genus Monopsia E. Grove & G. Sturt, 1887 †
- Genus Muelleriopsis N.I. Hendey, 1972 †
- Genus Nanofrustulum F.E. Round, H. Hallsteinsen & E. Paasche, 1999 (6)
- Genus Nanoneis R.E. Norris, 1973
- Genus Naunema C.G. Ehrenberg, 1838
- Genus Naviculonema C.L.Graeff, J.P.Kociolek & S.R.Rushforth, 2013 (1)
- Genus Neidiomorpha H. Lange-Bertalot & M. Cantonati in M. Cantonati, H. Lange-Bertlaot & N. Angeli, 2010 (5)
- Genus Nematoplata J.B.M. Bory de Saint-Vincent, 1822
- Genus Neobrunia O. Kuntze, 1894 †
- Genus Neodetonia S. Blanco, 2011
- Genus Neodiatoma A. Kanitz, 1887
- Genus Neograya O. Kuntze, 1898
- Genus Neomoelleria S.Blanco & C.E.Wetzel, 2016 (2)
- Genus Nephrodiscus S. Komura, 1996 †
- Genus Nephroneis M.C. Amspoker, 1989
- Genus Ninastrelnikovia H.Lange-Bertalot & A.Fuhrmann, 2014 (3)
- Genus Nitzschiopsidea J. Grüss, 1928
- Genus Noszkya P. Lefebure & E. Cheneviere, 1939 †
- Genus Nothoceratium G.B. De Toni, 1894
- Genus Novilla P.A.C. Heiberg, 1863
- Genus Ocularia E.J. Quekett, 1844
- Genus Odontodiscus C.G. Ehrenberg, 1845 †
- Genus Odontotropis A. Grunow, 1884 †
- Genus Omphalopelta C.G. Ehrenberg, 1844
- Genus Omphalophortron S. Komura, 2005 †
- Genus Omphalopsis R.K. Greville, 1863
- Genus Omphalotheca C.G. Ehrenberg, 1854
- Genus Oncodiscus J.W.Bailey
- Genus Oncosphenia C.G. Ehrenberg, 1845
- Genus Opephoropsis J. Frenguelli, 1945
- Genus Orthosira W. Smith, 1855 accepted as Orthoseira G.H.K. Thwaites, 1848 (1)
- Genus Orthotropis P.T. Cleve, 1891
- Genus Oshitea S. Komura, 1993 †
- Genus Palaeotrigonium A.G. Vologdin, 1962 †
- Genus Paleohorstia S.Blanco & C.E.Wetzel, 2016
- Genus Paleopandorus S. Komura, 1996 †
- Genus Paltonophora F.T. Kützing, 1833
- Genus Pantocsekia A. Grunow ex J. Pantocsek, 1886 †
- Genus Pappia M. Hajos in M. Hajos & Z. Rehakova, 1974
- Genus Paradesmus A.C.J. Corda, 1835
- Genus Paraszechenyia S.Blanco & C.E.Wetzel, 2016 (4)
- Genus Parelion Schmidt, 1888
- Genus Parodontella S. Komura, 1999 †
- Genus Pentapodiscus C.G. Ehrenberg, 1843
- Genus Peponia R.K. Greville, 1863 †
- Genus Peragalla F. Schütt, 1895
- Genus Peragallia F. Schütt, 1895
- Genus Peragalloella H. Van Heurck, 1909
- Genus Periptera C.G. Ehrenberg, 1844
- Genus Peristephania C.G. Ehrenberg, 1854
- Genus Perithyra C.G. Ehrenberg ex H. Van Heurck, 1896
- Genus Perizonium F. Cohn & C. Janisch ex L. Rabenhorst, 1864
- Genus Peroniopsis F. Hustedt, 1952
- Genus Petitia M. Peragallo in J. Tempère & H. Peragallo, 1909 accepted as Halopetitia S.Blanco & C.E.Wetzel, 2016
- Genus Phacodiscus A. Meunier, 1910
- Genus Phaeothallus K.I.Meyer
- Genus Phalarina Ehrenberg
- Genus Pharyngoglossa Corda, 1835
- Genus Phialediscus L. Vailionis, 1930
- Genus Phlyctaenia F.T. Kützing, 1849
- Genus Phycorona Blanco, 2020 †
- Genus Pinnulariosigma T.V. Desikachary, V.N. Raja Rao & V.T. Sridharan in T.V. Desikachary, 1989
- Genus Playaensis S.A. Spaulding & J.P. Kociolek in S.A. Spaulding, J.P. Kociolek & Davis, D.R., 2002
- Genus Plegmolobos S. Komura, 2005 †
- Genus Pleurodesmium F.T. Kützing, 1846
- Genus Pleurodiscina P.C. Silva, 1970
- Genus Pleurodiscus J.W. Barker & S.H. Meakin, 1944
- Genus Pleuroneis P.T. Cleve, 1895
- Genus Pleurosiphonia C.G. Ehrenberg, 1871
- Genus Pleurostaurum L. Rabenhorst, 1859 (2)
- Genus Plicatodiscus Z.I. Glezer, 1988
- Genus Ploiaria J. Pantocsek ex Van Heurck, 1896 †
- Genus Plumosigma T. Nemoto, 1956
- Genus Plurifenestra S. Komura, 1996 †
- Genus Podiscus J.W. Bailey, 1844
- Genus Pododiscus F.T. Kützing, 1844
- Genus Podosphenia Ehrenberg, 1836
- Genus Pogoneis F.E. Round & P.W. Basson, 1997
- Genus Poloniasira I. Kaczmarska & J.M. Ehrman, 2008 †
- Genus Polyceratium A.F. Castracane, 1886
- Genus Polygonalium A.G. Vologdin, 1962 †
- Genus Polymyscos C. Janisch, 1888
- Genus Pomphodiscus J.W. Barker & S.H. Meakin, 1947 †
- Genus Ponticella C.G. Ehrenberg, 1873
- Genus Pontodiscus D.N.Temniskova-Topalova & V.S.Sheshukova-Poretzkaya, 1981 †
- Genus Poretzkia A.P. Jousé, 1949 †
- Genus Porocyclia C.G. Ehrenberg, 1848
- Genus Porodiscus R.K. Greville, 1863 †
- Genus Porostauros F. Habirshaw, 1877
- Genus Porosularia B.V. Skvortzov, 1976
- Genus Porotheca J. Fenner, 1994 accepted as Furtheca S.Blanco & C.E.Wetzel, 2016 †
- Genus Potamodiscus J. Gerloff, 1968
- Genus Praecymatosira N.I. Strelnikova in Dzinoridze, Jousé & Stelnikova, 1979
- Genus Praeepithemia A.P. Jousé, 1952
- Genus Praethalassiosiropsis R. Gersonde & D.M. Harwood, 1990 †
- Genus Pravifusus A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 (1)
- Genus Pritchardia L. Rabenhorst, 1864
- Genus Proboscidea T.B.B. Paddock & P.A. Sims, 1980
- Genus Proboscineis F. Butzin, 1980
- Genus Prorostaurus C.G. Ehrenberg, 1843
- Genus Protonema Meneghinini, 1845
- Genus Protorhaphoneis B. Kwiecinska & J. Sieminska, 2000
- Genus Psammoparalia
- Genus Pseudauliscus G. Leuduger-Fortmorel, 1879
- Genus Pseudoamphiprora (P.T. Cleve) P.T. Cleve, 1894 †
- Genus Pseudoaulacodiscus V.N. Vekschina, 1961 †
- Genus Pseudocerataulus J. Pantocsek, 1889
- Genus Pseudocoscinodiscus A. Grunow in H. Van Heurck, 1883
- Genus Pseudodictyoneis P.T. Cleve ex J. Pantocsek, 1892
- Genus Pseudodimerogramma H.-J. Schrader in H.-J. Schrader & J. Fenner, 1976 †
- Genus Pseudodiploneis A. Schmidt, 1874
- Genus Pseudohyalodiscus T.F. Kozyrenko & I.V. Makarova, 1997
- Genus Pseudomastogloia J. Pantocsek, 1905
- Genus Pseudo-pleurosigma P.T. Cleve & A. Grunow, 1880
- Genus Pseudopyxilla A. Forti, 1909 †
- Genus Pseudostaurosiropsis E.A. Morales, 2001 (1)
- Genus Pseudostephanodiscus A. Grunow, 1884
- Genus Pseudosynedra J. Pantocsek ex G. Moesz, 1904
- Genus Pseudosynedra G. Leuduger-Fortmorel ex C.S. Boyer, 1827
- Genus Pseudotribrachia S.Blanco & C.E.Wetzel, 2016 (1)
- Genus Psygmatella F.T. Kützing, 1834
- Genus Pterotheca A. Grunow ex Forti, 1909 †
- Genus Ptychodiscus E. O'Meara, 1867 (1)
- Genus Pyrgodiscus F. Kitton ex P.T. Cleve, 1885 †
- Genus Pyxidicula N.I. Strelnikova & V.A. Nikolaev, 1986 accepted as Eupyxidicula S.Blanco & C.E.Wetzel, 2016
- Genus Quadrodiscus P. Prema & T.V. Desikachary, 1989
- Genus Radialiplicata (Z.I. Glezer) Z.I. Glezer, 1992 †
- Genus Radiodiscus A. Forti & P. Schulz, 1932
- Genus Radiodiscus (W.M. Bale) Mills, 1932
- Genus Radiopalma J. Brun, 1891 †
- Genus Ralfsia E. O'Meara, 1875
- Genus Rancia L. Mangin ex J. Chavaillon, 1939
- Genus Raphidogloea
- Genus Rattrayella G.B. De Toni, 1889 †
- Genus Reicheltia H. Van Heurck, 1896
- Genus Rexlowea J.P. Kociolek & E.W. Thomas, 2010 (2)
- Genus Rhabdium C.F.W. Wallroth, 1833
- Genus Rhabdosira C.G. Ehrenberg, 1870
- Genus Rhaphidogloea F.T. Kützing, 1844
- Genus Rhaphidophora J.A. Long, D.P. Fuge & J. Smith, 1946 accepted as Rhaphidophoropsis S.Blanco & C.E.Wetzel, 2016
- Genus Rhaphidophoropsis S.Blanco & C.E.Wetzel, 2016 (1)
- Genus Rhaphiophorasphaera B.L. Clark & A.S. Campbell, 1945 †
- Genus Rhaphococcus C.G. Ehrenberg, 1871
- Genus Rhipidophora F.T. Kützing, 1844 (1)
- Genus Rhizonotia C.G. Ehrenberg, 1843
- Genus Rhynchopyxis R. Gersonde & D.M. Harwood, 1990 †
- Genus Rimaria F.T. Kutzing, 1844
- Genus Robinsetta G D. Hanna & A.L. Brigger, 1964 †
- Genus Rosaria Carmichael in W.J. Hooker, 1833
- Genus Rossiella T.V. Desikachary & C.L. Maheshwari, 1958 †
- Genus Rouxiopsis S. Komura, 1996 †
- Genus Rutilariopsis H. Van Heurck, 1896 †
- Genus Saeptifera R.M.Gogorev, 2014
- Genus Sagittula S. Komura, 1997
- Genus Salacia J. Pantocsek, 1889
- Genus Salpa P. Lefebure, 1947
- Genus Sameioneis D.J. Russell & R.E. Norris, 1971 (1)
- Genus Sawamuraia S. Komura, 1976 †
- Genus Scalariella C.Riaux-Gobin, 2012 (2)
- Genus Scalptrum A.C.J. Corda, 1835
- Genus Scapha Edwards ex C. Johnston, 1860
- Genus Scaphularia F.T. Kützing, 1844
- Genus Sceptronema H. Takano, 1983
- Genus Schimittia P. Lefebure, 1947
- Genus Schimperiella G. Karsten, 1905
- Genus Schizonema C.A. Agardh, 1824 (5)
- Species Schizonema abbreviatum (Grunow) Kuntze, 1898 accepted as Navicula abbreviata Grunow in Cleve & Grunow, 1880
- Species Schizonema abnorme (Grunow) Kuntze, 1898 accepted as Navicula abnormis Grunow, 1880
- Species Schizonema abruptum (Gregory) Kuntze, 1898 accepted as Navicula lyra var. abrupta Gregory, 1857
- Species Schizonema acrosphaerium (Brébisson) Kuntze, 1898 accepted as Frustulia acrosphaeria Brébisson, 1838
- Species Schizonema acus Kuntze, 1898
- Species Schizonema acutum (W.Smith) Kuntze, 1898 accepted as Stauroneis acuta f. acuta W. Smith, 1853
- Species Schizonema adenense (Cleve) Kuntze, 1898 accepted as Caloneis adenensis Cleve, 1894
- Species Schizonema adriaticum C.Agardh, 1830
- Species Schizonema adriaticum sensu Meneghini (herb.) ex Kutzing, 1844
- Species Schizonema aemulum (Grunow) Kuntze, 1898 accepted as Navicula aemula var. aemula Grunow in Schmidt, 1874
- Species Schizonema aestivum (Donkin) Kuntze, 1898 accepted as Navicula aestiva var. aestiva Donkin, 1858
- Species Schizonema aestuarii (Cleve) Kuntze, 1898 accepted as Pinnularia aestuarii f. aestuarii Cleve, 1895
- Species Schizonema affine (Ehrenberg) Kuntze, 1898 accepted as Navicula affinis f. affinis Ehrenberg, 1843
- Species Schizonema africanum (Cleve) Kuntze, 1898 accepted as Stauroneis africana var. africana Cleve, 1881
- Species Schizonema agardhi Ehrenberg, 1835
- Species Schizonema albicans (Kützing) Meneghini, 1845 accepted as Micromega albicans Kützing, 1844
- Species Schizonema albicans Meneghini, 1845
- Species Schizonema algidum (Grunow) Kuntze, 1898 accepted as Navicula algida Grunow, 1884
- Species Schizonema alpestre (Grunow) Kuntze, 1898 accepted as Navicula alpestris var. alpestris Grunow, 1860
- Species Schizonema alpha (P.T.Cleve) Kuntze, 1898 accepted as Navicula alpha Cleve, 1893
- Species Schizonema alpinum (W. Smith) Kuntze, 1898 accepted as Pinnularia alpina var. alpina W. Smith, 1853
- Species Schizonema amaliae Arnott manuscript
- Species Schizonema ambiguum (Cleve) Kuntze, 1898
- Species Schizonema americanum Grunow in Van Heurck, 1880
- Species Schizonema americanum (Ehrenberg) Kuntze, 1898 accepted as Navicula americana f. americana Ehrenberg, 1843
- Species Schizonema amica (Cleve & Grunow) Kuntze, 1898 accepted as Navicula amica Cleve & Grunow in Cleve, 1881
- Species Schizonema amicorum (Grunow & Cleve) Kuntze, 1898 accepted as Navicula amicorum var. amicorum Grunow ms. in Cleve, 1895
- Species Schizonema ammonis Kuntze, 1898
- Species Schizonema ammophilum (Grunow) Kuntze, 1898 accepted as Navicula ammophila f. ammophila Grunow, 1882
- Species Schizonema amphigomphus (Ehrenberg) Kuntze, 1898 accepted as Navicula amphigomphus var. amphigomphus Ehrenberg, 1843
- Species Schizonema amphioxys (Gregory) Kuntze, 1898 accepted as Stauroneis amphioxys var. amphioxys Gregory, 1856
- Species Schizonema amphisbaenodes Kuntze, 1898
- Species Schizonema amphisbaenum (Bory de Saint Vincent) Kuntze, 1898 accepted as Navicula amphisbaena f. amphisbaena Bory, 1824
- Species Schizonema amplius (Kützing) Grunow, 1880
- Species Schizonema anceps (Ehrenberg) Kuntze, 1898 accepted as Stauroneis anceps f. anceps Ehrenberg, 1843
- Species Schizonema andersonii (Cleve) Kuntze, 1898 accepted as Navicula anderssonii Cleve, 1881
- Species Schizonema andicola (Cleve) Kuntze, 1898 accepted as Schizostauron andicolum Cleve, 1881
- Species Schizonema annulatum (A.Grunow) C.E.O.Kuntze, 1898 accepted as Navicula annulata var. annulata Grunow in Cleve & Grunow, 1880
- Species Schizonema antarcticum Harvey ex Grunow, 1880
- Species Schizonema anthracis (Cleve & Brun) Kuntze, 1898 accepted as Navicula anthracis Cleve & Brun in Brun & Tempère, 1889
- Species Schizonema antillarum (Cleve) Kuntze, 1898 accepted as Alloioneis antillarum Cleve & Grunow in Cleve, 1878
- Species Schizonema apiculatum (Greville) C.Agardh
- Species Schizonema apiculatum Chauvin, 1827
- Species Schizonema apiense Kuntze, 1898
- Species Schizonema aponium (Kützing) Kuntze, 1898 accepted as Brachysira aponina Kützing, 1836
- Species Schizonema appendiculatum (C.Agardh) Kuntze, 1898 accepted as Frustulia appendiculata C.Agardh, 1827
- Species Schizonema aquitaniae (J. Brun & Héribaud) Kuntze, 1898 accepted as Navicula aquintaniae var. aquintaniae Brun & Heribaud in Heribaud, 1893
- Species Schizonema arabicum (Grunow) Kuntze, 1898 accepted as Navicula arabica var. arabica Grunow in Schmidt et al., 1875
- Species Schizonema araneosum Kützing, 1844
- Species Schizonema aratum (Grunow) Kuntze, 1898 † accepted as Navicula arata Grunow, 1882 †
- Species Schizonema arborescens Dickie
- Species Schizonema arbuscula (Ehrenberg) Kützing, 1844 accepted as Naunema arbuscula Ehrenberg, 1838
- Species Schizonema arbuscula (Ehrenberg) Meneghini, 1846 accepted as Naunema arbuscula Ehrenberg, 1838
- Species Schizonema arcuatum (Pantocsek) Kuntze, 1898 † accepted as Navicula arcuata Pantocsek, 1892 †
- Species Schizonema arenariaeforme (Pantocsek) Kuntze, 1898 accepted as Navicula arenariaeformis Pantocsek, 1889
- Species Schizonema arenicola (Grunow) Kuntze, 1898 accepted as Navicula arenicola var. arenicola Grunow, 1882
- Species Schizonema areolatum (Cleve) Kuntze, 1898 accepted as Diploneis areolata Cleve, 1894
- Species Schizonema areschougianum (Grunow) Kuntze, 1898 accepted as Navicula areschougiana var. areschougiana Grunow, 1860
- Species Schizonema arvernum (Peragallo & Héribaud) Kuntze, 1898 accepted as Navicula arverna var. arverna M. Peragallo & Héribaud in Héribaud, 1893
- Species Schizonema asperum (Ehrenberg) Kuntze, 1898 accepted as Navicula aspera Ehrenberg, 1840
- Species Schizonema asymmetricum Kuntze, 1898
- Species Schizonema auklandicum (Grunow) Kuntze, 1898 accepted as Navicula aucklandica Grunow, 1863
- Species Schizonema aureum (Kützing) Meneghini, 1846 accepted as Micromega aureum Kützing, 1844
- Species Schizonema australicum (A. Schmidt) Kuntze, 1898 accepted as Navicula lyra var. australica Schmidt in Schmidt et al., 1874
- Species Schizonema baccatum (Brun) Kuntze, 1898 accepted as Navicula baccata Brun in Brun & Tempère, 1889
- Species Schizonema bacillare (Gregory) Kuntze, 1898 accepted as Navicula bacillaris var. bacillaris Gregory, 1856
- Species Schizonema bacilliforme (Grunow) Kuntze, 1898 accepted as Navicula bacilliformis f. bacilliformis Grunow in Cleve & Grunow, 1880
- Species Schizonema bacillum (Ehrenberg) Kuntze, 1898 accepted as Navicula bacillum f. bacillum Ehrenberg, 1838 (1839)
- Species Schizonema bahusiense (Grunow) Kuntze, 1898 accepted as Navicula minuscula var. bahusiensis Grunow, 1880
- Species Schizonema balearicum (Cleve) Kuntze, 1898 accepted as Stauroneis balearica Cleve, 1881
- Species Schizonema balfourianum (Grunow) Kuntze, 1898 accepted as Pinnularia balfouriana var. balfouriana Grunow ex Cleve, 1895
- Species Schizonema balticum
- Species Schizonema barbitos (A. Schmidt) Kuntze, 1898 accepted as Navicula barbitos A.Schmidt, 1888
- Species Schizonema basaltaeproxima (Brun & Héribaud) Kuntze, 1898 accepted as Navicula basaltaeproxima f. basaltaeproxima Brun & Héribaud in Héribaud, 1893
- Species Schizonema bauemleri (Grunow) Kuntze, 1898 accepted as Navicula bauemleri var. bauemleri Pantocsek, 1886
- Species Schizonema beccarianum (Grunow) Kuntze, 1898 accepted as Navicula beccariana Grunow, 1886
- Species Schizonema beckii (Pantocsek) Kuntze, 1898 accepted as Navicula beckii Pantocsek, 1889
- Species Schizonema berkeleyi (Kützing) Rabenhorst, 1864 accepted as Micromega berkeleyi Kützing, 1849
- Species Schizonema beta (Cleve) Kuntze, 1898 accepted as Navicula beta Cleve, 1895
- Species Schizonema biacus Kuntze, 1898
- Species Schizonema biblos (Cleve) Kuntze, 1898 accepted as Navicula biblos Cleve, 1891
- Species Schizonema biceps (Gregory) Kuntze, 1898
- Species Schizonema biclavatum (Cleve & Grove) Kuntze, 1898 accepted as Navicula biclavata Cleve & Grove, 1891
- Species Schizonema biconstrictum (Grunow) Kuntze, 1898 accepted as Navicula biconstricta (Grunow) M.Peragallo, 1903
- Species Schizonema bicrucicula Kuntze, 1898
- Species Schizonema biforme (Grunow) Kuntze, 1898 accepted as Stauroneis biformis var. biformis Grunow, 1863
- Species Schizonema bilobatum (Leuduger-Fortmorel) Kuntze, 1898 accepted as Navicula bilobata Leuduger-Fortmorel, 1879
- Species Schizonema bimarginatum Kuntze, 1898
- Species Schizonema binarium (A. Schmidt) Kuntze, 1898 accepted as Navicula binaria Schmidt in Schmidt et al., 1875
- Species Schizonema binode (Ehrenberg) Kuntze, 1898 accepted as Navicula binodis Ehrenberg, 1840
- Species Schizonema bioculatum (Grunow) Kuntze, 1898 accepted as Navicula bioculata var. bioculata Grunow in Schmidt et al., 1881
- Species Schizonema biplatessa Kuntze, 1898
- Species Schizonema bipunctatum Kuntze, 1898
- Species Schizonema biseriatum (Petit) Kuntze, 1898 accepted as Navicula biseriata Petit, 1877
- Species Schizonema biseripunctatum Kuntze, 1898
- Species Schizonema bistriatum (Leuduger-Fortmorel) Kuntze, 1898 accepted as Stauroneis bistriata Leuduger-Fortmorel, 1879
- Species Schizonema bisulcatum (Lagerstedt) Kuntze, 1898 accepted as Navicula bisulcata f. bisulcata Lagerstedt, 1873
- Species Schizonema bituminosum (Pantocsek) Kuntze, 1898 accepted as Navicula bituminosa var. bituminosa Pantocsek, 1889
- Species Schizonema bivittatum (Pantocsek) Kuntze, 1898 accepted as Navicula bivittata var. bivittata Pantocsek, 1889
- Species Schizonema blandum (A. Schmidt) Kuntze, 1898 accepted as Navicula blanda var. blanda Schmidt, 1874
- Species Schizonema blyttii (Agardh) Rabenhorst, 1864 accepted as Micromega blyttii Agardh, 1830
- Species Schizonema bodosense (Pantocsek) Kuntze, 1898 accepted as Navicula bodosensis var. bodosensis Pantocsek, 1892
- Species Schizonema bogotense (Grunow) Kuntze, 1898 accepted as Navicula bogotensis var. bogotensis Grunow in Schmidt et al., 1876
- Species Schizonema boldtianum (Cleve) Kuntze, 1898 accepted as Diploneis boldtiana Cleve, 1891
- Species Schizonema bolleanum (Grunow) Kuntze, 1898 accepted as Rhoikoneis bolleana var. bolleana Grunow, 1863
- Species Schizonema bombiforme (Cleve) Kuntze, 1898 accepted as Navicula bombiformis Leuduger-Fortmorel, 1892
- Species Schizonema bomboides (A. Schmidt) Kuntze, 1898 accepted as Navicula bomboides var. bomboides Schmidt, 1872
- Species Schizonema bombus (Ehrenberg) Kuntze, 1898 accepted as Pinnularia bombus Ehrenberg, 1844
- Species Schizonema bombycinum Meneghini, 1845
- Species Schizonema bombycinum sensu Kutzing, 1849
- Species Schizonema boreale (Ehrenberg) Kuntze, 1898 accepted as Pinnularia borealis f. borealis Ehrenberg, 1843
- Species Schizonema bottnicum (Grunow) Kuntze, 1898 accepted as Navicula bottnica Grunow, 1880
- Species Schizonema brachysirum (Brébisson) Kuntze, 1898 accepted as Navicula brachysira Brébisson ex Rabenhorst, 1853
- Species Schizonema brandelii (Cleve) Kuntze, 1898 †
- Species Schizonema brasilianum (Grunow) Kuntze, 1898 accepted as Cymbella brasiliana Cleve, 1881
- Species Schizonema brasiliense (Grunow) Kuntze, 1898 accepted as Navicula brasiliensis var. brasiliensis Grunow, 1863
- Species Schizonema braunii (Grunow) Kuntze, 1898 accepted as Navicula braunii var. braunii Grunow in Van Heurck, 1880
- Species Schizonema brebissoniodes Kuntze, 1898
- Species Schizonema breve (Gregory) Kuntze, 1898 accepted as Navicula brevis var. brevis Gregory, 1857
- Species Schizonema brevicostatum (Cleve) Kuntze, 1898 accepted as Pinnularia brevicostata f. brevicostata Cleve, 1891
- Species Schizonema bruchii (Grunow) Kuntze, 1898 accepted as Navicula bruchii Grunow in Cleve, 1881
- Species Schizonema brunii (Pantocsek) Kuntze, 1898 accepted as Navicula brunii Pantocsek, 1886
- Species Schizonema bryopsis Kützing, 1844
- Species Schizonema bullatum Kuntze, 1898
- Species Schizonema bulnheimii (Grunow) Kuntze, 1898 accepted as Navicula bulnheimii var. bulnheimii Grunow, 1880
- Species Schizonema campbellii (Petit) Kuntze, 1898 accepted as Navicula campbellii Petit, 1877
- Species Schizonema capitatum (Ehrenberg) Kuntze, 1898 accepted as Navicula capitata var. capitata Ehrenberg, 1838
- Species Schizonema capitatum Kützing, 1844
- Species Schizonema cardinale (Ehrenberg) Kuntze, 1898 † accepted as Navicula cardinalis f. cardinalis Ehrenberg, 1840
- Species Schizonema cardinaliculus (Cleve) Kuntze, 1898 † accepted as Pinnularia cardinaliculus var. cardinaliculus Cleve, 1895
- Species Schizonema carinatum Schumann, 1869
- Species Schizonema cariniferum (Grunow) Kuntze, 1898 accepted as Navicula carinifera f. carinifera Grunow in Schmidt et al., 1874
- Species Schizonema caspium Grunow, 1878
- Species Schizonema castracanei (Grunow) Kuntze, 1898 accepted as Navicula castracanei Grunow in Cleve, 1881
- Species Schizonema centraster (Cleve) Kuntze, 1898 accepted as Navicula centraster Cleve, 1895
- Species Schizonema cercaria Meneghini ex Kützing, 1844
- Species Schizonema cespitula Suhr herbarium ex Kützing, 1849
- Species Schizonema ceylanense (Leuduger-Fortmorel) Kuntze, 1898 accepted as Navicula ceylanensis Leuduger-Fortmorel, 1879
- Species Schizonema ceylanica Skvortzow, 1932
- Species Schizonema chersonense (Grunow) Kuntze, 1898 accepted as Navicula chersonensis var. chersonensis Grunow in Schmidt et al., 1875
- Species Schizonema chi (Cleve) Kuntze, 1898 accepted as Navicula chi Cleve, 1895
- Species Schizonema chinense (Cleve) Kuntze, 1898 accepted as Diploneis chinensis Cleve, 1894
- Species Schizonema chondroides (Kützing) Meneghini, 1845 accepted as Micromega chondroides Kützing, 1844
- Species Schizonema chyzeri (Pantocsek) Kuntze, 1898 accepted as Navicula chyzerii Pantocsek, 1889
- Species Schizonema cinctum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia cincta Ehrenberg, 1854
- Species Schizonema circumnodosum (Brun) Kuntze, 1898 accepted as Navicula circumnodosa Brun, 1891
- Species Schizonema cirrhosum ‘Meneghini' Grunow, 1880
- Species Schizonema citreum (A. Schmidt) Kuntze, 1898 accepted as Navicula citrea Schmidt in Schmidt et al., 1877
- Species Schizonema clavatum J. Agardh in Hohenacker, 1852-1862
- Species Schizonema clavatum (Gregory) Kuntze, 1898 accepted as Navicula clavata f. clavata Gregory, 1856
- Species Schizonema claviculus (Gregory) Kuntze, 1898 accepted as Navicula claviculus var. claviculus Gregory, 1857
- Species Schizonema clavigerum (Cleve) Kuntze, 1898 accepted as Caloneis clavigera Cleve, 1894
- Species Schizonema clementis (Grunow) Kuntze, 1898 accepted as Navicula clementis var. clementis Grunow, 1882
- Species Schizonema clepsydra (Donkin) Kuntze, 1898 accepted as Navicula clepsydra var. clepsydra Donkin, 1861
- Species Schizonema clevei (Lagerstedt) Kuntze, 1898 accepted as Navicula clevei Lagerstedt, 1873
- Species Schizonema cluthense (Gregory) Kuntze, 1898 accepted as Navicula cluthensis f. cluthensis Gregory, 1857
- Species Schizonema coarctatum (A. Schmidt) Kuntze, 1898 accepted as Navicula coarctata Schmidt in Schmidt et al., 1875
- Species Schizonema cocconeiforme (Gregory) Kuntze, 1898 accepted as Navicula cocconeiformis f. cocconeiformis Gregory ex Greville, 1855
- Species Schizonema coffeiforme (A. Schmidt) Kuntze, 1898 accepted as Navicula coffeiformis var. coffeiformis Schmidt, 1874
- Species Schizonema columbiense (Cleve) Kuntze, 1898 accepted as Caloneis columbiensis Cleve, 1894
- Species Schizonema comoides sensu W. Sm., 1856, non (Dillw.) Ag., 1830
- Species Schizonema comosum Grunow, 1880
- Species Schizonema compar (Janisch) Kuntze, 1898 accepted as Navicula compar Janisch in Schmidt et al., 1881
- Species Schizonema complanatum (Grunow) Kuntze, 1898 accepted as Amphora complanata Grunow, 1867
- Species Schizonema compressicaudum (A. Schmidt) Kuntze, 1898 accepted as Navicula compressicauda Schmidt, 1874
- Species Schizonema concilians (Cleve) Kuntze, 1898 accepted as Navicula concilians var. concilians Cleve, 1895
- Species Schizonema confertum W. Smith, 1856
- Species Schizonema congruum (Janisch) Kuntze, 1898 accepted as Navicula congrua Janisch in Schmidt et al., 1881
- Species Schizonema connectens (Grunow) Kuntze, 1898 accepted as Navicula lyra var. connectens Grunow in Pantocsek, 1886
- Species Schizonema consanguineum (Cleve) Kuntze, 1898 accepted as Navicula consanguinea Cleve, 1895
- Species Schizonema consimile (A. Schmidt) Kuntze, 1898
- Species Schizonema consors (A. Schmidt) Kuntze, 1898 accepted as Navicula consors Schmidt in Schmidt et al., 1876
- Species Schizonema conspersum (Pantocsek) Kuntze, 1898 accepted as Navicula conspersa Pantocsek, 1892
- Species Schizonema conspicuum (A.Schmidt) Kuntze, 1898 accepted as Navicula conspicua A.W.F.Schmidt, 1876
- Species Schizonema constrictum (Ehrenberg) Kuntze, 1898 accepted as Stauroneis constricta f. constricta Ehrenberg, 1843
- Species Schizonema contentum (Grunow) Kuntze, 1898 accepted as Navicula contenta f. contenta Grunow in Van Heurck, 1885
- Species Schizonema copiosum (A. Schmidt) Kuntze, 1898 accepted as Navicula copiosa A.Schmidt, 1888
- Species Schizonema corinaldi Meneghini, 1845
- Species Schizonema cornicularum
- Species Schizonema corniculatum
- Species Schizonema corymbosum Agardh, 1824 accepted as Navicula corymbosa (Agardh) Cleve, 1896
- Species Schizonema costulatum (Grunow) Kuntze, 1898 accepted as Navicula costulata f. costlulata Cleve & Grunow, 1880
- Species Schizonema couperi (Bailey) Kuntze, 1898 accepted as Pinnularia couperi J.W. Bailey, 1851
- Species Schizonema crabro (Ehrenberg) Kuntze, 1898 accepted as Pinnularia crabro Ehrenberg, 1844
- Species Schizonema crabroniforme (Grunow) Kuntze, 1898 accepted as Navicula crabroniformis Grunow in Schmidt et al., 1875
- Species Schizonema crassirostre (Grunow) Kuntze, 1898 accepted as Navicula crassirostris var. crassirostris Grunow in Cleve & Grunow, 1880
- Species Schizonema crinoideum Braun ex Rabenhorst, 1861-1879
- Species Schizonema crispum Montagne, 1842
- Species Schizonema crispum Eichwald, 1852
- Species Schizonema cruciatum (Cleve) Kuntze, 1898 accepted as Pinnularia cruciata Cleve
- Species Schizonema crucicula (W.Smith) Kuntze, 1898 accepted as Stauroneis crucicula W.Smith, 1853
- Species Schizonema cruciferum (Grunow) Kuntze, 1898 accepted as Navicula crucifera var. crucifera Grunow in Schmidt et al., 1876
- Species Schizonema cruciforme (Donkin) Kuntze, 1898 accepted as Navicula cruciformis var. cruciformis Donkin, 1861
- Species Schizonema cruciger W. Smith, 1856 accepted as Schizonema crucigerum W.Smith, 1856
- Species Schizonema crucigerum W.Smith, 1856 accepted as Haslea crucigera (W.Smith) Simonsen, 1974
- Species Schizonema cryptocephalum (Kützing) Kuntze, 1898 accepted as Navicula cryptocephala f. cryptocephala Kützing, 1844
- Species Schizonema cubitus (Tempère & Brun) Kuntze, 1898 accepted as Navicula cubitus Tempère & Brun in Brun & Tempère, 1889
- Species Schizonema cupreum Agardh, 1830
- Species Schizonema cuprinum Rabenhorst, 1847
- Species Schizonema curtum (Cleve) Kuntze, 1898 accepted as Navicula kariana f. curta Cleve, 1883
- Species Schizonema cuspidatum (Kützing) Kuntze, 1898 accepted as Frustulia cuspidata Kutzing, 1833
- Species Schizonema cynthia (A. Schmidt) Kuntze, 1898 accepted as Navicula cynthia var. cynthia Schmidt in Schmidt et al., 1875
- Species Schizonema cyprinus (Ehrenberg) Kuntze, 1898 accepted as Pinnularia cyprinus Ehrenberg, 1843
- Species Schizonema dactylus (Ehrenberg) Kuntze, 1898 accepted as Pinnularia dactylus f. dactylus Ehrenberg, 1843
- Species Schizonema dalmaticum (Grunow) Kuntze, 1898 accepted as Navicula dalmatica var. dalmatica Grunow, 1860
- Species Schizonema damaecorne Harvey ex Grunow, 1880
- Species Schizonema debilissimum (Grunow) Kuntze, 1898 accepted as Navicula debilissima Grunow, 1884
- Species Schizonema debyi (Pantocsek) Kuntze, 1898 accepted as Navicula debyi var. debyi Pantocsek, 1886
- Species Schizonema decussatum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia decussata Ehrenberg, 1845
- Species Schizonema definitum (Grove & Sturt) Kuntze, 1898 accepted as Navicula definita var. definita Grove & Sturt, 1887
- Species Schizonema delawarense (Grunow) Kuntze, 1898 accepted as Navicula delawarensis Grunow ex Cleve, 1893
- Species Schizonema delta (Cleve) Kuntze, 1898 accepted as Navicula delta Cleve, 1893
- Species Schizonema demerara (Grunow) Kuntze, 1898 accepted as Navicula demerara Grunow, 1893
- Species Schizonema demtum (A. Schmidt) Kuntze, 1898 accepted as Navicula demta Schmidt in Schmidt et al., 1881
- Species Schizonema depresum (Cleve) Kuntze, 1898 accepted as Navicula depressa Cleve, 1891
- Species Schizonema desideratum (Cleve) Kuntze, 1898 accepted as Stauroneis desiderata f. desiderata Cleve in Cleve & Grunow, 1880
- Species Schizonema diadesmis Kuntze, 1898
- Species Schizonema dicephalum (Ehrenberg) Kuntze, 1898 accepted as Navicula dicephala f. dicephala Ehrenberg, 1837
- Species Schizonema didymum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia didyma Ehrenberg, 1844
- Species Schizonema diffluens (A. Schmidt) Kuntze, 1898 accepted as Navicula diffluens Schmidt in Schmidt et al., 1874
- Species Schizonema diffusum (A. Schmidt) Kuntze, 1898 accepted as Navicula diffusa var. diffusa Schmidt in Schmidt et al., 1874
- Species Schizonema dilatatum (Ehrenberg) Kuntze, 1898 accepted as Navicula dilatata Ehrenberg, 1843
- Species Schizonema dillwynii C.Agardh, 1824 accepted as Amphipleura rutilans (Trentepohl ex Roth) Cleve, 1894
- Species Schizonema diploneis Kuntze, 1898
- Species Schizonema directum (W. Smith) Kuntze, 1898 accepted as Pinnularia directa var. directa W. Smith, 1853
- Species Schizonema discernendum (Pantocsek) Kuntze, 1898 accepted as Navicula discernenda Pantocsek, 1889
- Species Schizonema discrepans (A. Schmidt) Kuntze, 1898 accepted as Navicula discrepans Schmidt in Schmidt et al., 1875
- Species Schizonema dispersum (Grove & Sturt) Kuntze, 1898 accepted as Navicula dispersa Grove & Sturt, 1887
- Species Schizonema distans (W. Smith) Kuntze, 1898 accepted as Pinnularia distans W.Smith, 1853
- Species Schizonema distentum Kuntze, 1898
- Species Schizonema distigma Kuntze, 1898
- Species Schizonema distinguendum (Cleve) Kuntze, 1898 † accepted as Pinnularia viridis var. distinguenda Cleve, 1891 †
- Species Schizonema divergens W. Smith, 1856
- Species Schizonema divergentissimum (Grunow) Kuntze, 1898 accepted as Navicula divergentissima var. divergentissima Grunow in Cleve & Möller, 1879
- Species Schizonema doljense (Pantocsek) Kuntze, 1898 accepted as Navicula doljensis Pantocsek, 1886
- Species Schizonema domblittense (Grunow) Kuntze, 1898 accepted as Navicula expleta var. domblittensis Grunow, 1882
- Species Schizonema domingense Kuntze, 1898
- Species Schizonema donkinii Kuntze, 1898
- Species Schizonema dubium (Ehrenberg) Kuntze, 1898 accepted as Navicula dubia f. dubia Ehrenberg, 1843
- Species Schizonema dubium Harvey, 1841
- Species Schizonema durandii (Kitton) Kuntze, 1898 accepted as Navicula durandii f. durandii Kitton, 1885
- Species Schizonema dusenii (Cleve) Kuntze, 1898 accepted as Caloneis dusenii Cleve, 1894
- Species Schizonema ectocarpoides Meneghini ex Kutzing, 1844
- Species Schizonema egenum (A. Schmidt) Kuntze, 1898 accepted as Navicula egena Schmidt in Schmidt et al., 1890
- Species Schizonema ehrenbergii Kuntze, 1898
- Species Schizonema ehrenbergii Kützing, 1844
- Species Schizonema elegans (W.Smith) Kuntze, 1898 accepted as Navicula elegans f. elegans W. Smith, 1853
- Species Schizonema ellipticum (Kützing) Kuntze, 1898 accepted as Navicula elliptica f. elliptica Kützing, 1844
- Species Schizonema elongatulum (Pantocsek) Kuntze, 1898 accepted as Navicula elongatula Pantocsek, 1889
- Species Schizonema entomon (Ehrenberg) Kuntze, 1898 accepted as Pinnularia entomon Ehrenberg, 1843
- Species Schizonema episcopale (Cleve) Kuntze, 1898 accepted as Pinnularia episcopalis f. episcopalis Cleve, 1891
- Species Schizonema epsilon (P.T.Cleve) C.E.O.Kuntze, 1898 accepted as Navicula epsilon Cleve, 1893
- Species Schizonema esox (Ehrenberg) Kuntze, 1898 accepted as Pinnularia esox f. esox Ehrenberg, 1843
- Species Schizonema eta (Cleve) Kuntze, 1898 accepted as Navicula eta Cleve, 1893
- Species Schizonema eudoxia (A. Schmidt) Kuntze, 1898 accepted as Navicula eudoxia var. eudoxia Schmidt in Schmidt et al., 1875
- Species Schizonema eugeniae (Cleve) Kuntze, 1898 accepted as Navicula eugeniae Cleve, 1881
- Species Schizonema excellens (Cleve) Kuntze, 1898 accepted as Pinnularia exellens var. exellens Cleve, 1890
- Species Schizonema exemtum (A. Schmidt) Kuntze, 1898 accepted as Navicula exemta A. Schmidt, 1874
- Species Schizonema exile (Kützing) Kuntze, 1898 accepted as Navicula exilis f. exilis Kützing, 1844
- Species Schizonema exilissimum (Grunow) Kuntze, 1898 accepted as Navicula exilissima var. exilissima Grunow in Van Heurck, 1880
- Species Schizonema eximium Thwaites, 1848
- Species Schizonema eximium (Grunow) Kuntze, 1898 accepted as Caloneis eximia Grunow ex Cleve, 1894
- Species Schizonema falaisiense (Grunow) Kuntze, 1898 accepted as Navicula falaisensis f. falaisensis Grunow in Van Heurck, 1880
- Species Schizonema fallax (Cleve) Kuntze, 1898 accepted as Navicula fallax Cleve, 1894
- Species Schizonema fasciatum (Lagerstedt) Kuntze, 1898 accepted as Navicula fasciata var. fasciata Lagerstedt, 1873
- Species Schizonema fastigiatum (Kützing) Rabenhorst
- Species Schizonema febigeri (Cleve) Kuntze, 1898 accepted as Navicula febigeri Cleve, 1881
- Species Schizonema finmarchicum (Cleve & Grunow) Kuntze, 1898 accepted as Stauroneis finmarchica Cleve & Grunow, 1880
- Species Schizonema finnicum (Cleve) Kuntze, 1898 accepted as Cocconeis finnica Ehrenberg, 1838
- Species Schizonema flagelliferum (Kützing) Rabenhorst, 1864 accepted as Micromega flagelliferum Kützing, 1844
- Species Schizonema flamma (A. Schmidt) Kuntze, 1898 accepted as Navicula flamma Schmidt in Schmidt et al., 1876
- Species Schizonema flammula (A. Schmidt) Kuntze, 1898 accepted as Navicula flammula Schmidt in Schmidt et al., 1876
- Species Schizonema flavum Kützing, 1849
- Species Schizonema flexuosum (Cleve) Kuntze, 1898 † accepted as Pinnularia flexuosa f. flexuosa Cleve, 1895
- Species Schizonema floccosum sensu Rudolphi
- Species Schizonema floccosum Kützing, 1844
- Species Schizonema floridanum (Cleve) Kuntze, 1898 accepted as Navicula floridana Cleve, 1881
- Species Schizonema fluitans (Brun) Kuntze, 1898 accepted as Navicula fluitans var. fluitans Brun, 1891
- Species Schizonema foliola (Tempère & Brun) Kuntze, 1898 accepted as Navicula foliola Tempère & Brun in Brun & Tempère, 1889
- Species Schizonema folium (Ehrenberg) Kuntze, 1898 accepted as Navicula folium Ehrenberg, 1840
- Species Schizonema forcipatum (Greville) Kuntze, 1898 accepted as Navicula forcipata f. forcipata Greville, 1859
- Species Schizonema formicinum (Grunow) Kuntze, 1898 accepted as Navicula formicina Grunow in Cleve, 1878
- Species Schizonema formosum (Gregory) Kuntze, 1898 accepted as Navicula formosa var. formosa Gregory, 1856
- Species Schizonema forte (Gregory) Kuntze, 1898 accepted as Pinnularia fortis Gregory, 1856
- Species Schizonema frater (Cleve) Kuntze, 1898 accepted as Caloneis frater Cleve, 1894
- Species Schizonema fraudulentum (A. Schmidt) Kuntze, 1898 accepted as Navicula fraudulenta A.Schmidt, 1881
- Species Schizonema frauenfeldianum (Grunow) Kuntze, 1898 accepted as Pleurostauron frauenfeldianum Grunow, 1867
- Species Schizonema frauenfeldii (Grunow) Kuntze, 1898 accepted as Amphipleura frauenfeldii Grunow, 1863
- Species Schizonema frieseanum (Grunow) Kuntze, 1898 accepted as Cymbella frieseana Grunow in Cleve, 1881
- Species Schizonema fromenterae (Cleve) Kuntze, 1898 accepted as Navicula fromenterae Cleve, 1881
- Species Schizonema fruticulosum Kützing, 1849
- Species Schizonema fucicola Agardh, 1830
- Species Schizonema fulmen (Brightwell) Kuntze, 1898 accepted as Stauroneis fulmen var. fulmen Brightwell, 1859
- Species Schizonema fulvum (Ehrenberg) Kuntze, 1898 accepted as Pleurosiphonia fulva Ehrenberg, 1854
- Species Schizonema fuscum (Gregory) Kuntze, 1898 accepted as Navicula smithii var. fusca Gregory, 1857
- Species Schizonema fusioides (Grunow) Kuntze, 1898 accepted as Navicula fusioides Grunow, 1880
- Species Schizonema galea (Brun) Kuntze, 1898 accepted as Navicula galea Brun, 1891
- Species Schizonema galikii (Pantocsek) Kuntze, 1898 accepted as Navicula gálikii Pantocsek, 1889
- Species Schizonema gallapagense (Cleve) Kuntze, 1898 accepted as Navicula gallapagensis var. gallapagensis Cleve, 1881
- Species Schizonema gamma (Cleve) Kuntze, 1898 accepted as Navicula gamma var. gamma Cleve, 1893
- Species Schizonema gastrum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia gastrum Ehrenberg, 1843
- Species Schizonema gelatinosum Suhr ex Kützing, 1844
- Species Schizonema gemmatum (Greville) Kuntze, 1898 accepted as Navicula gemmata var. gemmata Greville, 1859
- Species Schizonema geniferum (A. Schmidt) Kuntze, 1898 accepted as Navicula genifera Schmidt in Schmidt et al., 1874
- Species Schizonema gentile (Donkin) Kuntze, 1898 accepted as Navicula gentilis var. gentilis Donkin, 1872
- Species Schizonema genuflexum (Kützing) Kuntze, 1898 accepted as Navicula genuflexa Kützing, 1844
- Species Schizonema gibbulum (Cleve) Kuntze, 1898 accepted as Navicula gibbula f. gibbula Cleve, 1894
- Species Schizonema gibbum (Ehrenberg) Kuntze, 1898 accepted as Navicula gibba Ehrenberg, 1830
- Species Schizonema glaciale (Cleve) Kuntze, 1898 accepted as Cocconeis glacialis Cleve, 1873
- Species Schizonema globiceps (Gregory) Kuntze, 1898 accepted as Pinnularia globiceps var. globiceps Gregory, 1856
- Species Schizonema gotlandicum (Grunow) Kuntze, 1898 accepted as Navicula gottlandica var. gottlandica Grunow in Cleve & Möller, 1878
- Species Schizonema gracile (Ehrenberg) Kuntze, 1898 accepted as Navicula gracilis f. gracilis Ehrenberg, 1832
- Species Schizonema gracillimum (Gregory) Kuntze, 1898 accepted as Pinnularia gracillima var. gracillima Gregory, 1856
- Species Schizonema gracillimum W. Smith, 1856
- Species Schizonema graeffii (Grunow) Kuntze, 1898 accepted as Navicula graeffii f. graeffii Grunow in Schmidt et al., 1875
- Species Schizonema granulatum Kuntze, 1898
- Species Schizonema grateloupii Agardh, 1824
- Species Schizonema gratum (Pantocsek) Kuntze, 1898 accepted as Navicula grata Pantocsek, 1889
- Species Schizonema gregarium (Donkin) Kuntze, 1898 accepted as Navicula gregaria var. gregaria Donkin, 1861
- Species Schizonema gregoryi Kuntze, 1898
- Species Schizonema grevillei Agardh accepted as Libellus grevillei (C.Agardh) Cleve
- Species Schizonema grevillii sensu W. Smith, 1856
- Species Schizonema groenlandica Pouchet, 1893
- Species Schizonema groenlandicum (Cleve) Kuntze, 1898 accepted as Navicula groenlandica Cleve, 1881
- Species Schizonema grovei (Cleve) Kuntze, 1898 accepted as Navicula grovei Cleve, 1893
- Species Schizonema gruendleri (A. Schmidt) Kuntze, 1898 accepted as Navicula gruendleri Schmidt, 1873
- Species Schizonema grunowii Kuntze, 1898
- Species Schizonema guttatum (Grunow) Kuntze, 1898 accepted as Navicula guttata var. guttata Grunow in Cleve & Möller, 1878
- Species Schizonema h-album (Cleve) Kuntze, 1898 accepted as Navicula h-album Cleve, 1894
- Species Schizonema halionatum (Pantocsek) Kuntze, 1898 accepted as Navicula halionata var. halionata Pantocsek, 1886
- Species Schizonema halophilum (Grunow) Kuntze, 1898 accepted as Navicula cuspidata var. halophila Grunow, 1885
- Species Schizonema hamuliferum (Grunow) Kuntze, 1898 accepted as Navicula hamulifera var. hamulifera Grunow in Cleve & Grunow, 1880
- Species Schizonema haradaae (Pantocsek) Kuntze, 1898 accepted as Navicula haradaae Pantocsek, 1892
- Species Schizonema hardmanianum (Cleve) Kuntze, 1898 accepted as Caloneis hardmaniana Cleve, 1894
- Species Schizonema hartleyanum (Greville) Kuntze, 1898 accepted as Pinnularia hartleyana f. hartleyana Greville, 1865
- Species Schizonema harveyanum Meneghini ex Cleve & Grunow, 1880
- Species Schizonema hasta (Pantocsek) Kuntze, 1898 † accepted as Navicula hasta f. hasta Pantocsek, 1892
- Species Schizonema haueri (Grunow) Kuntze, 1898 accepted as Navicula haueri var. haueri Grunow, 1882
- Species Schizonema haynaldii Schaarschmidt (Istvanffi), 1881
- Species Schizonema helioides Zanard
- Species Schizonema helioides Zanard in litt. Meneghini, 1846
- Species Schizonema helmintosum
- Species Schizonema hemipterum (Kützing) Kuntze, 1898 accepted as Navicula hemiptera var. hemiptera Kützing, 1844
- Species Schizonema hennedyi (W. Smith) Kuntze, 1898 accepted as Navicula hennedyi W.Smith, 1856
- Species Schizonema heteroflexum (Pantocsek) Kuntze, 1898 accepted as Navicula heteroflexa var. heteroflexa Pantocsek, 1889
- Species Schizonema heuflerianum (Grunow) Kuntze, 1898 accepted as Stauroneis heufleriana Grunow, 1863
- Species Schizonema hitchcockii (Ehrenberg) Kuntze, 1898 accepted as Navicula hitchcockii var. hitchcockii Ehrenberg, 1843
- Species Schizonema hochstetteri (Grunow) Kuntze, 1898 accepted as Navicula hochstetteri var. hochstetteri Grunow, 1863
- Species Schizonema hoffmannii Agardh, 1830
- Species Schizonema holstii (Cleve) Kuntze, 1898
- Species Schizonema hudsonis (Grunow) Kuntze, 1898 accepted as Navicula hudsonis Grunow, 1891
- Species Schizonema humerosum (Brébisson ex W. Smith) Kuntze, 1898 accepted as Navicula humerosa f. humerosa Brébisson ex W. Smith, 1856
- Species Schizonema humile Kützing, 1844
- Variety Schizonema humile var. titianum Grunow, 1880
- Species Schizonema hyalinodes Kuntze, 1898
- Species Schizonema hyalinum (Kützing) Meneghini, 1845 accepted as Micromega hyalinum Kützing, 1844
- Species Schizonema hyalopus (Kützing) Rabenhorst, 1864 accepted as Micromega hyalopus Kützing, 1844
- Species Schizonema hyalosira (Cleve) Kuntze, 1898 accepted as Navicula hyalosira Cleve, 1891
- Species Schizonema hydruroides Kützing, 1844
- Species Schizonema hyperboreum (Grunow) Kuntze, 1898 accepted as Navicula hyperborea Grunow, 1860
- Species Schizonema hyrtlii (Pantocsek) Kuntze, 1898 accepted as Navicula hyrtlii f. hyrtlii Pantocsek, 1892
- Species Schizonema icostauron (Grunow) Kuntze, 1898
- Species Schizonema illustrum (Pantocsek) Kuntze, 1898 accepted as Navicula illustra var. illustra Pantocsek, 1892
- Species Schizonema illyricum Kützing, 1844
- Species Schizonema imperfectum (Cleve) Kuntze, 1898 accepted as Navicula imperfecta var. imperfecta Cleve, 1883
- Species Schizonema implicatum Harvey, 1841
- Species Schizonema impressum (Grunow) Kuntze, 1898 accepted as Navicula impressa Grunow in Schmidt et al., 1875
- Species Schizonema incertum (Grunow) Kuntze, 1898 accepted as Navicula incerta f. incerta Grunow in Van Heurck, 1880
- Species Schizonema includens (Pantocsek) Kuntze, 1898 accepted as Navicula includens Pantocsek, 1892
- Species Schizonema inelegans (Grove & Sturt) Kuntze, 1898 accepted as Navicula inelegans Grove & Sturt, 1887
- Species Schizonema infirmum (Grunow) Kuntze, 1898 accepted as Navicula infirma Grunow, 1882
- Species Schizonema inflatum Kuntze, 1898
- Species Schizonema inflexum (Gregory) Kuntze, 1898 accepted as Pinnularia inflexa Gregory, 1856
- Species Schizonema inhalatum (A. Schmidt) Kuntze, 1898 accepted as Navicula inhalata var. inhalata Schmidt in Schmidt et al., 1874
- Species Schizonema inscriptum (Cleve) Kuntze, 1898 accepted as Diploneis inscripta Cleve, 1894
- Species Schizonema integrum (W.Smith) Kuntze, 1898 accepted as Pinnularia integra W.Smith, 1856
- Species Schizonema interlineatum (Grove & Sturt) Kuntze, 1898 accepted as Navicula interlineata Grove & Sturt, 1886
- Species Schizonema intermedium (Grunow) Grunow accepted as Schizonema myxacanthum var. intermedium Grunow, 1880
- Species Schizonema interruptum (Cleve) Kuntze, 1898 accepted as Navicula interrupta var. interrupta Kützing, 1844
- Species Schizonema intricatum Rabenhorst, 1864
- Species Schizonema intricatum Meneghini ex Cleve & Moller, 1879
- Species Schizonema intricatum Brebisson ex De Toni, 1891
- Species Schizonema investiens Montagne, 1842
- Species Schizonema iota (Cleve) Kuntze, 1898 accepted as Navicula iota Cleve, 1894
- Species Schizonema iridis (Ehrenberg) Kuntze, 1898 accepted as Navicula iridis f. iridis Ehrenberg, 1843
- Species Schizonema irregulare (Pantocsek) Kuntze, 1898 accepted as Navicula irregularis Pantocsek, 1889
- Species Schizonema irroratum (Greville) Kuntze, 1898 accepted as Navicula irrorata f. irrorata Greville, 1859
- Species Schizonema jadrense Meneghini ex H.L. Smith, 1874-1879
- Species Schizonema jamaicense (Greville) Kuntze, 1898 accepted as Navicula jamaicensis var. jamaicensis Greville, 1866
- Species Schizonema jamalinense (Cleve) Kuntze, 1898 accepted as Navicula jamalinensis var. jamalinensis Cleve in Cleve & Grunow, 1880
- Species Schizonema janischii Kuntze, 1898
- Species Schizonema japonicum Brun, 1891
- Species Schizonema javanicum (Grunow) Kuntze, 1898 accepted as Pleurostauron javanicum var. javanica Grunow, 1867
- Species Schizonema jejunum (A. Schmidt) Kuntze, 1898 accepted as Navicula jejuna var. jejuna Schmidt in Schmidt et al., 1876
- Species Schizonema jentzschii (Grunow) Kuntze, 1898 accepted as Navicula jentzschii f. jentzschii Grunow, 1882
- Species Schizonema jimboi (Pantocsek) Kuntze, 1898 accepted as Navicula jimboi Pantocsek, 1892
- Species Schizonema johnsonianum (Greville) Kuntze, 1898 accepted as Navicula johnsoniana Greville, 1863
- Species Schizonema kaelfvense (Grunow) Kuntze, 1898 accepted as Navicula kaelfvensis Grunow Ms. in Cleve, 1894
- Species Schizonema kanitzii (Pantocsek) Kuntze, 1898 accepted as Navicula kanitzii Pantocsek, 1892
- Species Schizonema kappa (Cleve) Kuntze, 1898 accepted as Navicula kappa Cleve, 1894
- Species Schizonema karelicum (Cleve) Kuntze, 1898 accepted as Pinnularia karelica var. karelica Cleve, 1891
- Species Schizonema karianum (Grunow) Kuntze, 1898 accepted as Navicula kariana var. kariana Grunow, 1880
- Species Schizonema kepesii (Grunow) Kuntze, 1898 accepted as Navicula kepesii Grunow, 1884
- Species Schizonema kinkerianum (Pantocsek) Kuntze, 1898 accepted as Navicula kinkeriana Pantocsek, 1892
- Species Schizonema kjellmanii (Cleve) Kuntze, 1898 accepted as Navicula kjellmanii var. kjellmanii (Cleve in Cleve & Grunow) Cleve, 1894
- Species Schizonema kobbense Kuntze, 1898
- Species Schizonema kochii Kuntze, 1898
- Species Schizonema kotschyi (Grunow) Kuntze, 1898 accepted as Navicula kotschyi f. kotschyi Grunow, 1860
- Species Schizonema kryokonites (Cleve) Kuntze, 1898 accepted as Navicula kryokonites var. kryokonites Cleve, 1883
- Species Schizonema kryophilum (Cleve) Kuntze, 1898 accepted as Navicula kryophila Cleve, 1883
- Species Schizonema kuetzingii Rabenhorst, 1864
- Species Schizonema kuntzei (Reichelt) Kuntze, 1898 accepted as Navicula kuntzei Reichelt, 1898
- Species Schizonema laciniatum Harv., 1841
- Species Schizonema laciniosum (A. Schmidt) Kuntze, 1898 accepted as Navicula laciniosa Schmidt in Schmidt et al., 1875
- Species Schizonema lacrimans (A. Schmidt) Kuntze, 1898 accepted as Navicula lacrimans var. lacrimans Schmidt in Schmidt et al., 1875
- Species Schizonema lacustre C.Agardh, 1824
- Species Schizonema ladogense (Cleve) Kuntze, 1898 accepted as Navicula ladogensis Cleve, 1891
- Species Schizonema laeve (Ehrenberg) Kuntze, 1898 accepted as Tabellaria laevis Ehrenberg, 1843
- Species Schizonema lagerheimii (Cleve) Kuntze, 1898 accepted as Navicula lagerheimii f. lagerheimii Cleve, 1894
- Species Schizonema lagerstedtii (Cleve) Kuntze, 1898 accepted as Navicula lagerheimii f. lagerheimii Cleve, 1894
- Species Schizonema lambda (Cleve) Kuntze, 1898 accepted as Navicula lambda var. lambda Cleve, 1894
- Species Schizonema lanceolatum (C.Agardh) Kuntze, 1898 accepted as Frustulia lanceolata C.Agardh, 1827
- Species Schizonema lapidicola Grunow in Van Heurck, 1880
- Species Schizonema latefasciatum (Grunow) Kuntze, 1898 accepted as Navicula latefasciata var. latefasciata Grunow in Cleve & Grunow, 1880
- Species Schizonema latevittatum (Pantocsek) Kuntze, 1898 accepted as Navicula latevittata Pantocsek, 1892
- Species Schizonema latissimum (Gregory) Kuntze, 1898 accepted as Navicula latissima f. latissima Gregory, 1856
- Species Schizonema latiusculum (Kützing) Kuntze, 1898 accepted as Navicula latiuscula var. latiuscula Kützing, 1844
- Species Schizonema latum (Brébisson) Kuntze, 1898 accepted as Frustulia lata Brébisson, 1838
- Species Schizonema lautum (Grunow) Kuntze, 1898 accepted as Navicula lauta Grunow
- Species Schizonema legumen (Ehrenberg) Kuntze, 1898 accepted as Pinnularia legumen f. legumen Ehrenberg, 1843
- Species Schizonema lenormandi Kützing, 1849
- Species Schizonema lenormandii
- Species Schizonema lepidulum (Grunow) Kuntze, 1898 accepted as Navicula lepidula Grunow, 1880
- Species Schizonema leptosomum (Grunow) Kuntze, 1898 accepted as Navicula leptosoma Grunow, 1880
- Species Schizonema lesinense (Grunow) Kuntze, 1898 accepted as Diploneis lesinensis Cleve, 1894
- Species Schizonema letourneurii (Pantocsek) Kuntze, 1898 accepted as Navicula letourneurii Pantocsek, 1889
- Species Schizonema libellus (Gregory) Kuntze, 1898 accepted as Navicula libellus Gregory, 1857
- Species Schizonema liber (W.Smith) Kuntze, 1898 accepted as Navicula liber f. liber W. Smith, 1853
- Species Schizonema libycum (Ehrenberg) Kuntze, 1898 accepted as Pleurosiphonia libyca Ehrenberg, 1854
- Species Schizonema liebmanni Grunow, 1880
- Species Schizonema ligniticum (Cleve) Kuntze, 1898 accepted as Pinnularia lignitica Cleve, 1895
- Species Schizonema limicola (Cleve) Kuntze, 1898 accepted as Navicula limicola Cleve, 1893
- Species Schizonema lindigianum (Grunow) Kuntze, 1898 accepted as Schizostauron lindigianum Grunow, 1867
- Species Schizonema lineare (Hilse) Kuntze, 1898 accepted as Navicula linearis Grunow, 1860
- Species Schizonema lineatum (Kützing) Rabenhorst, 1864 accepted as Micromega lineatum Kützing, 1844
- Species Schizonema lineatum (Kützing) Meneghini, 1846 accepted as Micromega lineatum Kützing, 1844
- Species Schizonema lineola (Grunow) Kuntze, 1898 accepted as Navicula lineola f. lineola Grunow, 1884
- Species Schizonema lobatum (Schwartz) Kuntze, 1898 accepted as Navicula lobata Schwartz in Rabenhorst, 1877
- Species Schizonema lubricum Kützing, 1844
- Species Schizonema lubricum Meneghini ex Kutzing, 1844
- Species Schizonema lucidulum (Grunow) Kuntze, 1898 accepted as Navicula lucidula f. lucidula Grunow in Van Heurck, 1880
- Species Schizonema lucidum Kuntze, 1898
- Species Schizonema luculentum (A.Schmidt) Kuntze, 1898 accepted as Navicula luculenta A.W.F.Schmidt, 1876
- Species Schizonema ludlovianum (A.Schmidt) Kuntze, 1898 † accepted as Navicula ludloviana f. ludloviana Schmidt in Schmidt et al., 1876
- Species Schizonema lunula (Cleve) Kuntze, 1898 accepted as Navicula lunula Cleve, 1894
- Species Schizonema lutescens Kützing, 1844
- Species Schizonema luteum Kützing, 1849
- Species Schizonema lyra (Ehrenberg) Kuntze, 1898 accepted as Navicula lyra f. lyra Ehrenberg, 1843
- Species Schizonema macilentum (Ehrenberg) Kuntze, 1898 accepted as Navicula macilenta Ehrenberg, 1837 †
- Species Schizonema macraeanum (Pantocsek) Kuntze, 1898 accepted as Navicula macraeana Pantocsek, 1889
- Species Schizonema maculatum (Bailey) Kuntze, 1898 accepted as Stauroneis maculata Bailey, 1851
- Species Schizonema maculosum (Donkin) Kuntze, 1898 accepted as Navicula maculosa Donkin, 1871
- Species Schizonema madagascariense (Cleve) Kuntze, 1898 accepted as Navicula madagascarensis Cleve in Tempère, 1890
- Species Schizonema madagassum Kuntze, 1898
- Species Schizonema maeandrinum (Cleve) Kuntze, 1898 accepted as Navicula maeandriana Cleve, 1893
- Species Schizonema magnum Kuntze, 1898
- Species Schizonema majus (Kützing) Kuntze, 1898 accepted as Frustulia major Kützing, 1833
- Species Schizonema majusculum Agardh, 1830
- Species Schizonema margaritiferum (Truan y Luard & Witt) Kuntze, 1898 accepted as Navicula margaritifera Truan y Luard & Witt, 1888
- Species Schizonema marginatum (Lewis) Kuntze, 1898 accepted as Navicula marginata Lewis, 1862
- Species Schizonema marginulatum (Cleve) Kuntze, 1898 accepted as Navicula marginulata Cleve, 1881
- Species Schizonema maritimum (Kützing) Kuntze, 1898 accepted as Frustulia maritima Ehrenberg, 1838
- Species Schizonema mastogloia (Pantocsek) Kuntze, 1898 accepted as Navicula mastogloidea Pantocsek, 1886
- Species Schizonema mauleri (Brun) Kuntze, 1898 accepted as Navicula mauleri var. mauleri Brun, 1880
- Species Schizonema mediterraneum (Kützing) Kuntze, 1898 accepted as Navicula mediterranea Kützing, 1844
- Species Schizonema medusinum
- Species Schizonema megastauros (Cleve) Kuntze, 1898 accepted as Navicula megastauros Cleve, 1883
- Species Schizonema meneghinii (Ralfs in Pritchard) Rabenhorst, 1864 accepted as Micromega meneghinii Ralfs in Pritchard, 1861
- Species Schizonema meniliticum (Pantocsek) Kuntze, 1898 accepted as Navicula menilitica Pantocsek, 1889
- Species Schizonema mesogloeoides Kützing, 1849
- Species Schizonema mesogongylum (Ehrenberg) Kuntze, 1898 † accepted as Pinnularia mesogongyla f. mesogongyla Ehrenberg, 1843
- Species Schizonema mesoleptum (Ehrenberg) Kuntze, 1898 accepted as Navicula mesolepta f. mesolepta Ehrenberg, 1843
- Species Schizonema micans Agardh, 1824
- Species Schizonema microcephalum (Kützing) Kuntze, 1898 accepted as Achnanthidium microcephalum Kützing, 1844
- Species Schizonema microrhynchus (Grunow) Kuntze, 1898 accepted as Navicula microrhynchus Grunow, 1882
- Species Schizonema microstauron (Ehrenberg) Kuntze, 1898 accepted as Stauroptera microstauron Ehrenberg, 1843
- Species Schizonema mikrotaton (Pantocsek) Kuntze, 1898 accepted as Navicula microtatos var. microtatos Pantocsek, 1886
- Species Schizonema minimum (Grunow) Kuntze, 1898 accepted as Navicula minima f. minima Grunow in Van Heurck, 1880
- Species Schizonema minusculum (Grunow) Kuntze, 1898 accepted as Navicula minuscula var. minuscula Grunow, 1880
- Species Schizonema minutissimum (Kützing) Kuntze, 1898 accepted as Synedra minutissima var. minutissima Kützing, 1844
- Species Schizonema minutum
- Species Schizonema mirabile (Castracane) Kuntze, 1898 accepted as Navicula mirabilis Castracane, 1886
- Species Schizonema mocsarense (Pantocsek) Kuntze, 1898 accepted as Navicula mocsarensis Pantocsek, 1892
- Species Schizonema modestum (Grunow) Kuntze, 1898 accepted as Navicula modesta Grunow, 1882
- Species Schizonema molare (Grunow) Kuntze, 1898 accepted as Navicula molaris var. molaris Grunow, 1863
- Species Schizonema molle W.Smith, 1856 accepted as Navicula mollis (W.Smith) Cleve, 1896
- Species Schizonema moniliferum (Cleve) Kuntze, 1898 accepted as Navicula monilifera f. monilifera Cleve, 1895
- Species Schizonema monmouthianum (Brun) Kuntze, 1898 accepted as Navicula monmouthiana Grunow in Cleve & Grunow, 1880
- Species Schizonema monodon (Brun) Kuntze, 1898 accepted as Navicula monodon Brun, 1891
- Species Schizonema mucosa Meunier, 1915
- Species Schizonema mucosum Kützing, 1844
- Species Schizonema mucosum sensu W. Smith, 1856
- Species Schizonema multiseriatum (Grunow) Kuntze, 1898 accepted as Navicula multiseriata Grunow in Cleve, 1881
- Species Schizonema mundum (Janisch) Kuntze, 1898 accepted as Navicula munda Janisch in Schmidt et al., 1881
- Species Schizonema murale (Grunow) Kuntze, 1898 accepted as Navicula muralis f. muralis Grunow in Van Heurck, 1880
- Species Schizonema musca (Gregory) Kuntze, 1898 accepted as Navicula musca f. musca Gregory, 1857
- Species Schizonema muscaeforme (Grunow) Kuntze, 1898 accepted as Navicula muscaeformis var. muscaeformis Grunow in Schmidt et al., 1875
- Species Schizonema muticum (Kützing) Kuntze, 1898 accepted as Navicula mutica f. mutica Kützing, 1844
- Species Schizonema my (Cleve) Kuntze, 1898 accepted as Navicula my Cleve, 1895
- Species Schizonema myxacanthum (Kützing) Meneghini, 1846 accepted as Micromega myxacanthum Kützing, 1844
- Species Schizonema nankoorense (Grunow) Kuntze, 1898 accepted as Navicula suborbicularis var. nankoorensis Grunow, 1867
- Species Schizonema navicula (Ehrenberg) Kuntze, 1898 accepted as Fragilaria navicula Ehrenberg, 1840
- Species Schizonema naviculaceum (Cleve) Kuntze, 1898 accepted as Dictyoneis naviculacea Cleve, 1890
- Species Schizonema nebulosum Meneghini ex Kützing, 1849
- Species Schizonema neglectum Thwaites, 1848
- Species Schizonema neglectum Kuntze, 1898
- Species Schizonema neogradense (Pantocsek) Kuntze, 1898 accepted as Cocconeis neogradensis Pantocsek, 1886
- Species Schizonema neumayeri (Pantocsek) Kuntze, 1898
- Species Schizonema niceaense (Peragallo) Kuntze, 1898 accepted as Navicula niceaensis H. Peragallo, 1888
- Species Schizonema nicobaricum (Grunow) Kuntze, 1898 accepted as Navicula nicobarica Grunow, 1863
- Species Schizonema nidulans (Cleve) Kuntze, 1898 accepted as Navicula nidulans Cleve, 1891
- Species Schizonema nitescens (Gregory) Kuntze, 1898 accepted as Navicula smithii var. nitescens Gregory, 1857
- Species Schizonema nivale (Ehrenberg) Kuntze, 1898 accepted as Navicula nivalis var. nivalis Ehrenberg, 1853
- Species Schizonema nobile (Ehrenberg) Kuntze, 1898 † accepted as Navicula nobilis var. nobilis Ehrenberg, 1840
- Species Schizonema nodosum (Ehrenberg) Kuntze, 1898 accepted as Navicula nodosa f. nodosa Ehrenberg, 1838
- Species Schizonema northumbricum (Donkin) Kuntze, 1898 accepted as Navicula northumbrica var. northumbrica Donkin, 1861
- Species Schizonema notabile (Greville) Kuntze, 1898 accepted as Navicula notabilis f. notabilis Greville, 1863
- Species Schizonema novoguineaense (Tempère) Kuntze, 1898
- Species Schizonema nubicola (Grunow) Kuntze, 1898 accepted as Navicula nubicola Grunow in Van Heurck, 1880
- Species Schizonema nudum (Pantocsek) Kuntze, 1898 accepted as Navicula nuda Pantocsek, 1889
- Species Schizonema ny (Cleve) Kuntze, 1898 accepted as Navicula ny Cleve, 1894
- Species Schizonema oamaruense (Grunow) Kuntze, 1898 accepted as Navicula oamaruensis Grunow in Schmidt et al., 1888
- Species Schizonema obliquestriatum (A. Schmidt) Kuntze, 1898 accepted as Navicula oblique striata Schmidt in Schmidt et al., 1877
- Species Schizonema obliquum (Gregory) Kuntze, 1898 accepted as Gololobovia obliqua (W.Gregory) Kulikovskiy, Glushchenko & Kociolek in Kulikovskiy et al., 2020
- Species Schizonema oblongum (Kützing) Kuntze, 1898 † accepted as Frustulia oblonga Kützing, 1833 †
- Species Schizonema obtusiusculum Kuntze, 1898
- Species Schizonema obtusum Greville, 1833
- Species Schizonema obtusum Kuntze, 1898
- Species Schizonema oculatum (Brébisson) Kuntze, 1898 accepted as Navicula oculata f. oculata Brebisson in Desmazieres, 1854
- Species Schizonema omega (Cleve) Kuntze, 1898 accepted as Navicula omega Cleve, 1893
- Species Schizonema omega (Grunow) Kuntze, 1898 accepted as Navicula o'mearii f. o'mearii Grunow in Cleve & Grunow, 1880
- Species Schizonema omicron (Cleve) Kuntze, 1898 accepted as Navicula omicron Cleve, 1895
- Species Schizonema omissum Kuntze, 1898
- Species Schizonema ophiocephalum (Cleve & Grunow) Kuntze, 1898 accepted as Navicula ophiocephala Cleve & Grove, 1891
- Species Schizonema opimum (Grunow) Kuntze, 1898 accepted as Navicula opima (Grunow) Cleve
- Species Schizonema oregonicum Kuntze, 1898
- Species Schizonema oscitans (A. Schmidt) Kuntze, 1898 accepted as Navicula oscitans var. oscitans Schmidt in Schmidt et al., 1875
- Species Schizonema osculiferum Kuntze, 1898
- Species Schizonema ovale Kuntze, 1898
- Species Schizonema ovatum (Grunow) Kuntze, 1898 accepted as Schizostauron ovatum Grunow, 1867
- Species Schizonema oviforme (Cleve) Kuntze, 1898 accepted as Navicula oviformis Cleve, 1895
- Species Schizonema ovulum (Grunow) Kuntze, 1898 accepted as Navicula ovulum Grunow, 1860
- Species Schizonema pachycephalum (Cleve) Kuntze, 1898 accepted as Stauroneis pachycephala P.T.Cleve, 1881
- Species Schizonema pallidum (Agardh) Rabenhorst, 1864 accepted as Micromega pallidum C.Agardh, 1827
- Species Schizonema pallidum (Agardh) Meneghini, 1846 accepted as Micromega pallidum C.Agardh, 1827
- Species Schizonema palpebrale (Brébisson ex W.Smith) Kuntze, 1898 accepted as Navicula palpebralis f. palpebralis Brebisson in litt., W. Smith, 1853
- Species Schizonema paludinarum (Pantocsek) Kuntze, 1898 † accepted as Navicula paludinarum var. paludinarum Pantocsek, 1892
- Species Schizonema panduriforme (Cleve) Kuntze, 1898 accepted as Mastogloia panduriformis Cleve, 1881
- Species Schizonema pantocsekii (Cleve) Kuntze, 1898 accepted as Dictyoneis pantocsekii Cleve, 1890
- Species Schizonema pantocsekii (De Toni) Kuntze, 1898 accepted as Navicula pantocsekiana De Toni, 1891
- Species Schizonema papillosum Meneghini, 1845
- Species Schizonema paradoxum (Kützing) Ehrenberg, (1839) 1841
- Species Schizonema parallelistriatum (Pantocsek) Kuntze, 1898 accepted as Navicula parallelistriata Pantocsek, 1889
- Species Schizonema parasiticum Griffiths ex Harvey
- Species Schizonema parcum (A. Schmidt) Kuntze, 1898 accepted as Navicula parca var. parca Schmidt in Schmidt et al., 1875
- Species Schizonema parma (Cleve) Kuntze, 1898 accepted as Diploneis parma Cleve, 1891
- Species Schizonema parvulum Kuntze, 1898
- Species Schizonema parvulum Kützing, 1844
- Species Schizonema parvum Meneghini ex Kutzing, 1849
- Species Schizonema parvum (Ehrenberg) Kuntze, 1898
- Species Schizonema patagonicum (Cleve) Kuntze, 1898 accepted as Navicula viridis var. patagonica Cleve, 1881
- Species Schizonema patens (Kützing) Meneghini, 1845 accepted as Micromega patens Kützing, 1844
- Species Schizonema paulense (Grunow) Kuntze, 1898 accepted as Pinnularia paulensis Grunow ex Cleve, 1895
- Species Schizonema pelliculosum (Brébisson) Kuntze, 1898 accepted as Synedra minutissima var. pelliculosa Kützing, 1849
- Species Schizonema pellucidum Kuntze, 1898
- Species Schizonema penicillatum Chauvin ex Agardh, 1830
- Species Schizonema pennatum (A.Schmidt) Kuntze, 1898 accepted as Navicula pennata var. pennata Schmidt in Schmidt et al., 1876
- Species Schizonema peregrinum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia peregrina var. peregrina Ehrenberg, 1843
- Species Schizonema perfectum (Pantocsek) Kuntze, 1898 accepted as Navicula perfecta var. perfecta Pantocsek, 1886
- Species Schizonema perizonium Kuntze, 1898
- Species Schizonema permagnum (Bailey) Kuntze, 1898 accepted as Pinnularia permagna Bailey, 1851
- Species Schizonema perminutum (Grunow) Kuntze, 1898 accepted as Stauroneis perminuta Grunow ex Cleve, 1881
- Species Schizonema perpusillum (Grunow) Kuntze, 1898 accepted as Navicula perpusilla var. perpusilla Grunow, 1860
- Species Schizonema perrotettii (Grunow) Kuntze, 1898 accepted as Craticula perrotettii Grunow, 1868 '1867'
- Species Schizonema pfitzerianum (O'Meara) Kuntze, 1898 accepted as Navicula pfitzeriana O'Meara, 1876
- Species Schizonema phi (Cleve) Kuntze, 1898 accepted as Navicula phi Cleve, 1895
- Species Schizonema philokryos Kuntze, 1898
- Species Schizonema phoenicenteron (Ehrenberg) Kuntze, 1898 accepted as Bacillaria phoenicenteron Nitzsch, 1817
- Species Schizonema phyllodes (Ehrenberg) Kuntze, 1898 accepted as Stauroneis phyllodes var. phyllodes Ehrenberg, 1843
- Species Schizonema pichinchense Kuntze, 1898
- Species Schizonema pinnatifidum Kuntze, 1898
- Species Schizonema pinnularia (Cleve) Kuntze, 1898 accepted as Navicula pinnularia f. pinnularia Cleve, 1868
- Species Schizonema pitea Kuntze, 1898
- Species Schizonema placenta (Ehrenberg) Kuntze, 1898 accepted as Navicula placenta f. placenta Ehrenberg, 1854
- Species Schizonema placentula (Ehrenberg) Kuntze, 1898 accepted as Pinnularia placentula var. placentula Ehrenberg, 1843
- Species Schizonema plagiostomum (Grunow) Kuntze, 1898 accepted as Navicula plagiostoma Grunow, 1879
- Species Schizonema platessa (Cleve) Kuntze, 1898 accepted as Navicula platessa Cleve, 1881
- Species Schizonema platycephalum (Ehrenberg) Kuntze, 1898 accepted as Stauroptera platycephala Ehrenberg, 1854
- Species Schizonema platystomum (Ehrenberg) Kuntze, 1898 accepted as Navicula platystoma var. platystoma Ehrenberg, 1838
- Species Schizonema pleurosiphonia Kuntze, 1898
- Species Schizonema plicatulum (Grunow) Kuntze, 1898 accepted as Navicula plicatula Grunow in Cleve & Möller, 1878
- Species Schizonema plicatum (Donkin) Kuntze, 1898 accepted as Navicula plicata Donkin, 1873
- Species Schizonema plumosum Kützing, 1844
- Species Schizonema polyclados (Kützing) Rabenhorst, 1864 accepted as Micromega polyclados Kützing, 1844
- Species Schizonema polygibbum (Pantocsek) Kuntze, 1898 accepted as Navicula polygibba Pantocsek, 1892
- Species Schizonema polygrammum (Ehrenberg) Kuntze, 1898 accepted as Stauroneis polygramma Ehrenberg, 1843
- Species Schizonema porto-montanum (Cleve) Kuntze, 1898 accepted as Navicula portomontana var. portomontana Cleve, 1894
- Species Schizonema powellii (Lewis) Kuntze, 1898 accepted as Navicula powellii var. powellii Lewis, 1862
- Species Schizonema praestes (A. Schmidt) Kuntze, 1898 accepted as Navicula praestes Schmidt in Schmidt et al., 1875
- Species Schizonema praetextum (Ehrenberg) Kuntze, 1898 accepted as Navicula praetexta f. praetexta Ehrenberg, 1840
- Species Schizonema priscum (A. Schmidt) Kuntze, 1898 accepted as Navicula prisca Schmidt in Schmidt et al., 1875
- Species Schizonema probabile (A. Schmidt) Kuntze, 1898 accepted as Navicula probabilis Schmidt in Schmidt et al., 1877
- Species Schizonema productum (W.Smith) Kuntze, 1898 accepted as Navicula producta var. producta W. Smith, 1853
- Species Schizonema prostratum (Berkeley) Greville, 1833 accepted as Monema prostratum Berkeley, 1832
- Species Schizonema protractum (Grunow) Kuntze, 1898 accepted as Navicula protracta Grunow, 1880
- Species Schizonema pseudobacillum (Grunow) Kuntze, 1898 accepted as Navicula pseudobacillum f. pseudobacillum Grunow in Cleve & Grunow, 1880
- Species Schizonema pseudo-cinctum (De Toni) Kuntze, 1898 accepted as Navicula pseudocincta De Toni, 1891
- Species Schizonema puella (Schumann) Kuntze, 1898 accepted as Navicula puella Schumann, 1867
- Species Schizonema pumilum C.Agardh, 1827
- Species Schizonema punctulatum (Ehrenberg) Kuntze, 1898 accepted as Navicula punctulata Ehrenberg, 1842
- Species Schizonema pupula (Kützing) Kuntze, 1898 accepted as Navicula pupula f. pupula Kützing, 1844
- Species Schizonema pusillum (W.Smith) Kuntze, 1898 accepted as Navicula pusilla f. pusilla W. Smith, 1853
- Species Schizonema pusio (Cleve) Kuntze, 1898 accepted as Navicula pusio f. pusio Cleve, 1895
- Species Schizonema pygmaeum (Kützing) Kuntze, 1898 accepted as Navicula pygmaea var. pygmaea Kützing, 1849
- Species Schizonema quadripunctatum (Lyngbye) Agardh, 1824
- Species Schizonema quadripunctatum Harvey, 1841
- Species Schizonema quadriseriatum (Cleve & Grunow) Kuntze, 1898 accepted as Navicula quadriseriata Cleve & Grunow in Cleve, 1881
- Species Schizonema quincunx (Cleve) Kuntze, 1898 accepted as Navicula quincunx Cleve, 1891
- Species Schizonema radians Agardh, 1830
- Species Schizonema radiatum C.Agardh, 1827
- Species Schizonema radiosum (Kützing) Kuntze, 1898 accepted as Navicula radiosa f. radiosa Kützing, 1844
- Species Schizonema raeanum (Castracane) Kuntze, 1898 accepted as Pinnularia raeana Castracane, 1886
- Species Schizonema ramosissima Ag., 1824 accepted as Schizonema ramosissimum C.Agardh, 1824
- Species Schizonema ramosissimum C.Agardh, 1824 accepted as Navicula ramosissima (C.Agardh) Cleve, 1895
- Species Schizonema ramosissimum sensu Harvey, 1841
- Species Schizonema ramphoides (Pantocsek) Kuntze, 1898 accepted as Navicula ramphoides Pantocsek, 1889
- Species Schizonema rangoonense (Grunow) Kuntze, 1898 accepted as Pinnularia rangoonensis var. rangoonensis Grunow ex Cleve, 1895
- Species Schizonema rarademiae Kuntze, 1898
- Species Schizonema rectangulatum (Gregory) Kuntze, 1898 accepted as Navicula rectangulata Gregory, 1857
- Species Schizonema reichardtianum (Grunow) Kuntze, 1898 accepted as Schizostauron reichardtianum Grunow, 1867
- Species Schizonema reichardtii (Grunow) Kuntze, 1898 accepted as Navicula reichardtii Grunow, 1880
- Species Schizonema reptabundum Grunow, 1867
- Species Schizonema restitutum (A. Schmidt) Kuntze, 1898 accepted as Navicula restituta A.Schmidt ex Cleve & Moller, 1878
- Species Schizonema reticulato-radiatum (Tempère & Brun) Kuntze, 1898 accepted as Navicula reticuloradiata Tempère & Brun in Brun & Tempère, 1889
- Species Schizonema reticulatum Agardh manuscript ex Agardh, 1830
- Species Schizonema retusum (Brébisson) Kuntze, 1898 accepted as Navicula retusa var. retusa Brébisson, 1854
- Species Schizonema rhaphoneis (Ehrenberg) Kuntze, 1898 accepted as Pinnularia rhaphoneis Ehrenberg, 1854
- Species Schizonema rho (Cleve) Kuntze, 1898 accepted as Navicula rho Cleve, 1895
- Species Schizonema rhombicum (Gregory) Kuntze, 1898 accepted as Navicula rhombica f. rhombica Gregory, 1855
- Species Schizonema rhombicum (M. Peragallo in Tempère & Peragallo) F.W. Mills, 1934 accepted as Schizostauron rhombicum M. Peragallo in Tempère & Peragallo, 1913
- Species Schizonema rhynchocephala (Kützing) Kuntze, 1898 accepted as Navicula rhynchocephala f. rhynchocephala Kützing, 1844
- Species Schizonema riojae (Cleve) Kuntze, 1898 accepted as Navicula riojae var. riojae Cleve, 1881
- Species Schizonema robustum (Cleve) Kuntze, 1898 accepted as Navicula robusta Grunow, 1877
- Species Schizonema rotaeanum (Rabenhorst) Kuntze, 1898 accepted as Stauroneis rotaeana G.L.Rabenhorst, 1856
- Species Schizonema rude (Cleve) Kuntze, 1898 accepted as Navicula rudis var. rudis Cleve, 1881
- Species Schizonema rugosum (Tempère & Brun) Kuntze, 1898 accepted as Mastogloia rugosa Tempère & Brun in Brun & Tempère, 1889
- Species Schizonema ruorum Meneghini
- Species Schizonema rutilans (Trentepohl ex Roth) Agardh, 1824 accepted as Berkeleya rutilans (Trentepohl ex Roth) Grunow, 1880
- Species Schizonema rutilans Areschoug ex Rabenhorst, 1861-1879
- Species Schizonema sagitta (Cleve) Kuntze, 1898 accepted as Stauroneis sagitta Cleve, 1881
- Species Schizonema salinarum (Grunow) Kuntze, 1898 accepted as Navicula salinarum Grunow, 1880
- Species Schizonema salinum (W.Smith) Kuntze, 1898 accepted as Stauroneis salina f. salina W. Smith, 1853
- Species Schizonema salvum (A. Schmidt) Kuntze, 1898 accepted as Navicula salva Schmidt in Schmidt et al., 1876
- Species Schizonema samoense (Grunow) Kuntze, 1898 accepted as Navicula samoensis Grunow, 1877
- Species Schizonema sandrianum (Cleve) Kuntze, 1898 accepted as Navicula sanctithomae Cleve, 1878
- Species Schizonema sandrianum (Grunow) Kuntze, 1898 accepted as Navicula sandriana Grunow, 1863
- Species Schizonema saturum (A. Schmidt) Kuntze, 1898 accepted as Navicula satura Schmidt in Schmidt et al., 1876
- Species Schizonema scalariferum (Brun) Kuntze, 1898 accepted as Navicula scalarifer Brun, 1891
- Species Schizonema scandinavicum (Lagerstedt) Kuntze, 1898 accepted as Stauroneis scandinavica Lagerst., 1876
- Species Schizonema schaarschmidtii (Pantocsek) Kuntze, 1898 accepted as Navicula schaarschmidtii Pantocsek, 1886
- Species Schizonema schinzii (Brun) Kuntze, 1898 accepted as Navicula schinzii Brun, 1891
- Species Schizonema schmidtii Kuntze, 1898
- Species Schizonema schultzei (Kain) Kuntze, 1898 accepted as Navicula schultzei var. schultzei Kain in Kain & Schultze, 1889
- Species Schizonema schweinfurthii Kuntze, 1898
- Species Schizonema scintillans (A. Schmidt) Kuntze, 1898 accepted as Navicula scintillans Schmidt in Schmidt et al., 1881
- Species Schizonema scoliopleura (A. Schmidt) Kuntze, 1898 accepted as Navicula scoliopleura Schmidt in Schmidt et al., 1876
- Species Schizonema scoparium Kützing, 1844
- Species Schizonema scopulorum (Brébisson) Kuntze, 1898 accepted as Navicula scopulorum f. scopulorum Brébisson in Kützing, 1849
- Species Schizonema scoticum Grunow in Van Heurck, 1880
- Species Schizonema scuplptum (Ehrenberg) Kuntze, 1898 accepted as Navicula sculpta var. sculpta Ehrenberg, 1854
- Species Schizonema scutelloides (W. Smith ex Gregory) Kuntze, 1898 accepted as Navicula scutelloides W.Smith, 1856
- Species Schizonema scutellum (O'Meara) Kuntze, 1898 accepted as Navicula scutellum (O'Meara) O'Meara, 1876
- Species Schizonema scutiforme (Grunow) Kuntze, 1898 accepted as Navicula scutiformis f. scutiformis Grunow in Schmidt et al., 1881
- Species Schizonema scutum (Schumann) Kuntze, 1898 accepted as Navicula scutum var. scutum Schumann, 1862
- Species Schizonema secernendum (A.Schmidt) Kuntze, 1898 accepted as Navicula secernenda A.W.F.Schmidt, 1876
- Species Schizonema sectile (A. Schmidt) Kuntze, 1898 accepted as Navicula sectilis var. sectilis Schmidt in Schmidt et al., 1877
- Species Schizonema sejunctum (A. Schmidt) Kuntze, 1898 accepted as Navicula sejuncta var. sejuncta Schmidt, 1874
- Species Schizonema semen (Ehrenberg) Kuntze, 1898 accepted as Navicula semen Ehrenberg, 1843
- Species Schizonema seminoides (Cleve) Kuntze, 1898 accepted as Navicula seminoides Cleve & Grove, 1894
- Species Schizonema seminulum (Grunow) Kuntze, 1898 accepted as Navicula seminulum f. seminulum Grunow, 1860
- Species Schizonema semitectum (A. Schmidt) Kuntze, 1898 accepted as Navicula semitecta Schmidt, 1874
- Species Schizonema septentrionale (Grunow) Kuntze, 1898 accepted as Stauroneis septentrionalis var. septentrionalis Grunow, 1884
- Species Schizonema sequens Kuntze, 1898
- Species Schizonema sericeum Suhr ex Rabenhorst, 1847
- Species Schizonema seriosum (Pantocsek) Kuntze, 1898 accepted as Navicula seriosa Pantocsek, 1892
- Species Schizonema sertularium Meneghini in litt. ex Kutzing
- Species Schizonema setaceum (Kützing) Meneghini, 1853
- Species Schizonema sigma Kuntze, 1898
- Species Schizonema sillimanorum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia sillimanorum Ehrenberg, 1843
- Species Schizonema simplex Meneghini ex Kutzing, 1849
- Species Schizonema singulare (A.Schmidt) Kuntze, 1898 accepted as Navicula singularis Schmidt, 1876
- Species Schizonema sirospermum (Kutzing ex Meneghini) Meneghini, 1845 accepted as Micromega sirospermum Kützing
- Species Schizonema sirospermum (Kützing) Rabenhorst, 1864
- Species Schizonema sirosporum Meneghini, 1846
- Species Schizonema smithii C.Agardh, 1824 accepted as Navicula bottnica Grunow, 1880
- Species Schizonema smithii Kützing, 1844
- Species Schizonema solare (Gregory) Kuntze, 1898 accepted as Navicula solaris Gregory, 1856
- Species Schizonema solidum (Cleve) Kuntze, 1898 accepted as Navicula solida Cleve in Cleve & Grunow, 1880
- Species Schizonema solierii Meneghini ex Grunow, 1880
- Species Schizonema sordidum
- Species Schizonema spadiceum Greville in Hooker, 1833
- Species Schizonema sparsipunctatum (Grove & Sturt) Kuntze, 1898 accepted as Navicula sparsipunctata Grove & Sturt, 1886
- Species Schizonema spathiferum (Grove & Sturt) Kuntze, 1898 accepted as Navicula spathifera Grove & Sturt in litt. Grunow, 1888
- Species Schizonema spathula (Brun) Kuntze, 1898 accepted as Navicula spathula Brun, 1891
- Species Schizonema spectabile (Gregory) Kuntze, 1898 accepted as Navicula spectabilis Gregory, 1857
- Species Schizonema sphaerophorum (Pfitzer) Kuntze, 1898
- Species Schizonema spicula (W.J.Hickie) Kuntze, 1898 accepted as Stauroneis spicula Cleve & Grunow, 1880
- Species Schizonema spinescens (Kützing) Meneghini, 1846 accepted as Micromega spinescens Kützing, 1844
- Species Schizonema spitzbergense (Grunow) Kuntze, 1898
- Species Schizonema splendens Meneghini ex Grunow in Van Heurck, 1880
- Species Schizonema splendidum (Cleve) Kuntze, 1898 accepted as Navicula splendida var. splendida Gregory, 1856
- Species Schizonema spurium (Cleve) Kuntze, 1898 accepted as Navicula spuria var. spuria Cleve, 1895
- Species Schizonema stalianum Meneghini, 1845
- Species Schizonema staruopterum (Grunow) Kuntze, 1898 accepted as Navicula stauroptera f. stauroptera Grunow, 1860
- Species Schizonema stauroneis Kuntze, 1898
- Species Schizonema staurophorum (Grunow) Kuntze, 1898 accepted as Pleurosigma staurophorum var. staurophorum Grunow in Cleve & Grunow, 1880
- Species Schizonema stercus-muscarum (Cleve) Kuntze, 1898 accepted as Navicula stercusmuscarum Cleve, 1895
- Species Schizonema stewartii Dickie ex Cleve & Grunow, 1880
- Species Schizonema stodderi (Greenleaf) Kuntze, 1898 accepted as Stauroneis stodderi var. stodderi Greenleaf in Lewis, 1865
- Species Schizonema stomatophorum (Grunow) Kuntze, 1898 accepted as Navicula stomatophora f. stomatophora Grunow in Schmidt et al., 1876
- Species Schizonema strangulatum Kuntze, 1898
- Species Schizonema striolatum
- Species Schizonema sturtii Kuntze, 1898
- Species Schizonema styriacum (Grunow) Kuntze, 1898 accepted as Navicula gastrum var. styriaca Grunow, 1882
- Species Schizonema suave (Cleve & Grunow) Kuntze, 1898 accepted as Navicula suavis Cleve & Grove, 1894
- Species Schizonema subalatum (Grunow) Kuntze, 1898 accepted as Navicula subalata Grunow in Cleve & Grunow, 1880
- Species Schizonema subcapitatum (Gregory) Kuntze, 1898 accepted as Navicula subcapitata f. subcapitata (Gregory) Ralfs in Pritchard, 1861
- Species Schizonema subcinctum (A. Schmidt) Kuntze, 1898 accepted as Navicula subcincta f. subcincta Schmidt, 1874
- Species Schizonema subcohaerens Thwaites, 1848
- Species Schizonema subconstrictum Kuntze, 1898
- Species Schizonema subconstrictum (Cleve) Kuntze, 1898 accepted as Dictyoneis subconstricta Cleve, 1894
- Species Schizonema subdivisum Agardh, 1830
- Species Schizonema subflexile (Gregory) Rabenhorst, 1864
- Species Schizonema subgemmatum Kuntze, 1898
- Species Schizonema subhamulatum (Grunow) Kuntze, 1898 accepted as Navicula subhamulata var. subhamulata Grunow in Van Heurck, 1880
- Species Schizonema subimpressum (Grunow) Kuntze, 1898 accepted as Navicula subimpressa var. subimpressa Grunow in Cleve & Grunow, 1880
- Species Schizonema subinflatum (Grunow) Kuntze, 1898 accepted as Navicula subinflata Grunow, 1883
- Species Schizonema sublineare (Grunow) Kuntze, 1898 accepted as Navicula sublinearis Grunow, 1885
- Species Schizonema sublyratum (Grunow) Kuntze, 1898 accepted as Navicula sublyrata Grunow in Cleve, 1883
- Species Schizonema subnudum (A. Schmidt) Kuntze, 1898 accepted as Navicula subnuda var. subnuda Schmidt in Schmidt et al., 1875
- Species Schizonema suborbiculare (Gregory) Kuntze, 1898 accepted as Navicula smithii var. suborbicularis Gregory, 1857
- Species Schizonema subovale (Cleve) Kuntze, 1898 accepted as Diploneis subovalis Cleve, 1894
- Species Schizonema subsalsum (Grunow) Kuntze, 1898 accepted as Navicula tumida var. subsalsa Grunow, 1860
- Species Schizonema subsolare (Grunow) Kuntze, 1898 accepted as Navicula subsolaris f. subsolaris Grunow, 1882
- Species Schizonema subtilissimum (Cleve) Kuntze, 1898 accepted as Navicula subtilissima f. subtilissima Cleve, 1891
- Species Schizonema sulcatum (Cleve) Kuntze, 1898 accepted as Stauroneis sulcata Cleve, 1881
- Species Schizonema supergradatum (Brun) Kuntze, 1898 accepted as Navicula supergradata Brun, 1891
- Species Schizonema superimpositum (A. Schmidt) Kuntze, 1898 accepted as Navicula superimposita Schmidt, 1874
- Species Schizonema surinamense (Cleve) Kuntze, 1898 accepted as Navicula surinamensis Cleve, 1895
- Species Schizonema szaboi (Pantocsek) Kuntze, 1898 accepted as Navicula szaboi Pantocsek, 1889
- Species Schizonema szontaghii (Pantocsek) Kuntze, 1898 accepted as Navicula szontaghii Pantocsek, 1886
- Species Schizonema tabellaria (Ehrenberg) Kuntze, 1898 accepted as Pinnularia tabellaria var. tabellaria Ehrenberg, 1843
- Species Schizonema tahitense (Grunow) Kuntze, 1898 accepted as Navicula tahitensis Grunow, 1863
- Species Schizonema tau (Cleve) Kuntze, 1898 accepted as Navicula tau Cleve, 1893
- Species Schizonema temperei (Brun) Kuntze, 1898 accepted as Navicula temperei Brun in Brun & Tempère, 1889
- Species Schizonema temperianum (De Toni) Kuntze, 1898 accepted as Navicula temperiana De Toni, 1891
- Species Schizonema tenellum Kützing, 1844
- Species Schizonema tenue C.Agardh, 1827
- Species Schizonema tenue Kützing, 1836
- Species Schizonema tenue Kützing, 1844
- Species Schizonema tenuissimum Kützing, 1844
- Species Schizonema theta (Cleve) Kuntze, 1898 accepted as Navicula theta Cleve, 1893
- Species Schizonema thorax (Brun) Kuntze, 1898 accepted as Navicula thorax Brun, 1891
- Species Schizonema thumii (Cleve) Kuntze, 1898 accepted as Dictyoneis thumii Cleve, 1890
- Species Schizonema thwaitesii (W. Smith ex Grunow in Van Heurck) Grunow in Van Heurck, 1880 accepted as Colletonema thwaitesii W.Smith ex Grunow
- Species Schizonema titianum Grunow, 1880
- Species Schizonema torneense (Cleve) Kuntze, 1898 accepted as Navicula torneensis f. torneensis Cleve, 1891
- Species Schizonema torquatum (Harvey) W.Smith, 1856 accepted as Schizonema smithii var. torquatum Harvey, 1841
- Species Schizonema tortuosum Crouan ex Cleve & Grunow, 1880
- Species Schizonema tortuosum Crouan frat., 1861
- Species Schizonema toulaae (Pantocsek) Kuntze, 1898 accepted as Navicula toulaae var. toulaae Pantocsek, 1892
- Species Schizonema trachyneis Kuntze, 1898
- Species Schizonema transitans (Cleve) Kuntze, 1898 accepted as Navicula transitans f. transitans Cleve, 1883
- Species Schizonema trevelyanum (Donkin) Kuntze, 1898 accepted as Navicula trevelyana var. trevelyana Donkin, 1861
- Species Schizonema trichocephalum Kützing, 1844
- Species Schizonema trigonocephalum Kuntze, 1898
- Species Schizonema trigonum Kuntze, 1898
- Species Schizonema trinotatum (Pantocsek) Kuntze, 1898 accepted as Navicula trinotata Pantocsek, 1892
- Species Schizonema truncatum (Rabenhorst) Kuntze, 1898 accepted as Stauroptera truncata Rabenhorst, 1853
- Species Schizonema tumescens (Grunow) Kuntze, 1898 accepted as Navicula tumescens Grunow in Schmidt et al., 1877
- Species Schizonema tumidulum (Grunow) Kuntze, 1898 accepted as Stauroneis tumidula Grunow, 1860
- Species Schizonema turgidulum (Pantocsek) Kuntze, 1898 accepted as Navicula turgidula Pantocsek, 1892
- Species Schizonema tuscula (Ehrenberg) Kuntze, 1898 accepted as Navicula tuscula f. tuscula Ehrenberg, 1840
- Species Schizonema ulvaceum (Berkeley ex Kützing) Kuntze, 1898 accepted as Dickieia ulvacea Berkeley ex Kützing, 1844
- Species Schizonema undulatum (Gregory) Kuntze, 1898 accepted as Pinnularia undulata f. undulata Gregory, 1854
- Species Schizonema vacillans (A. Schmidt) Kuntze, 1898 accepted as Navicula vacillans f. vacillans Schmidt in Schmidt et al., 1875
- Species Schizonema vagabundum (Brun) Kuntze, 1898 accepted as Navicula vagabunda Brun in Schmidt et al., 1892
- Species Schizonema vahlianum (Grunow) Kuntze, 1898 accepted as Navicula vahliana Grunow in Schmidt, 1874
- Species Schizonema validum (Cleve & Grunow) Kuntze, 1898 accepted as Navicula valida f. valida Cleve & Grunow, 1880
- Species Schizonema variolatum (Cleve) Kuntze, 1898 accepted as Navicula variolata f. variolata Cleve, 1891
- Species Schizonema ventricosum (Ehrenberg) Kuntze, 1898 accepted as Navicula ventricosa var. ventricosa Ehrenberg, 1830
- Species Schizonema venustissimum (Kitton) Kuntze, 1898 accepted as Navicula venustissima Kitton in Leuduger-Fortmorel, 1892
- Species Schizonema venustum (Pantocsek) Kuntze, 1898 accepted as Navicula venusta Pantocsek, 1889
- Species Schizonema vespa (Cleve) Kuntze, 1898 accepted as Diploneis vespa Cleve, 1894
- Species Schizonema virescens Harvey, 1841
- Species Schizonema virgineum (Cleve) Kuntze, 1898 accepted as Navicula virginea Cleve, 1878
- Species Schizonema viride (Nitzsch) Kuntze, 1898 accepted as Bacillaria viridis Nitzsch, 1817
- Species Schizonema viride Kützing, 1844
- Species Schizonema viridulum (Brébisson) Rabenhorst, 1864 accepted as Colletonema viridulum Brébisson ex Kützing, 1849
- Species Schizonema viridulum (Kützing) Kuntze, 1898 accepted as Frustulia viridula Kützing, 1833
- Species Schizonema vitreum (Cleve) Kuntze, 1898 accepted as Pleurosigma vitrea var. vitrea Cleve in Cleve & Moller, 1879
- Species Schizonema vulgare Thwaites, 1848 accepted as Frustulia vulgaris (Thwaites) De Toni, 1891
- Species Schizonema vulpinum (Kützing) Kuntze, 1898 accepted as Navicula vulpina var. vulpina Kützing, 1844
- Species Schizonema wankaremae (Cleve) Kuntze, 1898 accepted as Navicula wankaremae Cleve, 1883
- Species Schizonema wardii (Cleve) Kuntze, 1898 accepted as Caloneis wardii Cleve, 1894
- Species Schizonema weissflogii (A. Schmidt) Kuntze, 1898 accepted as Navicula weissflogii A.W.F.Schmidt, 1873
- Species Schizonema wilczeckii (Grunow) Kuntze, 1898 accepted as Navicula wilczeckii Grunow, 1884
- Species Schizonema wittii (Grunow) Kuntze, 1898 accepted as Navicula wittii Grunow in Cleve, 1881
- Species Schizonema wyattii Harvey, 1841
- Species Schizonema xi (Cleve) Kuntze, 1898 accepted as Navicula xi f. xi Cleve, 1895
- Species Schizonema yarrense (Grunow) Kuntze, 1898 accepted as Navicula yarrensis var. yarrensis Grunow in Schmidt et al., 1876
- Species Schizonema zanardinianum (Grunow) Kuntze, 1898 accepted as Navicula zanardiniana Grunow, 1860
- Species Schizonema zanardinii
- Species Schizonema zellense (Grunow) Kuntze, 1898 accepted as Navicula zellensis var. zellensis Grunow, 1860
- Species Schizonema zeta (Cleve) Kuntze, 1898 accepted as Navicula zeta var. zeta Cleve, 1895
- Species Schizonema zostereti (Grunow) Kuntze, 1898 accepted as Navicula zostereti f. zostereti Grunow, 1860
- Genus Schizostauron A. Grunow, 1867
- Genus Schmidtia C. Janisch, 1888
- Genus Schmidtiella C.H. Ostenfeld, 1903
- Genus Schuettia G.B. De Toni, 1894
- Genus Schumanniana P. Lefebure, 1947
- Genus Scoliodiscus A. Jurilj, 1954
- Genus Scoresbya N.I. Hendey, 1937 accepted as Hendeyscoresbya S.Blanco & C.E.Wetzel, 2016
- Genus Scytellum C.Agardh, 1827
- Genus Secallia F. Azpeitia, 1911
- Genus Sellaphoropsis D. Metzeltin & H. Lange-Bertalot, 2002
- Genus Sembeya P. Lefebure, 1947
- Genus Semseyia J. Pantocsek, 1902
- Genus Sextiputeus R. Ross & P.A. Sims, 2000 †
- Genus Sieminskia D. Metzeltin & H. Lange-Bertalot, 1998
- Genus Sigma M. Peragallo in J. Heribaud et al., 1920
- Genus Sigmatella F.T. Kützing, 1833 accepted as Nitzschia A.H. Hassall, 1845
- Genus Simonseniella J. Fenner, 1991 †
- Genus Siphonodiscus S. Komura, 1996 †
- Genus Skvortzowia M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012 (2)
- Genus Smithiella H. Peragallo in H. Peragallo & M. Peragallo, 1901
- Genus Solium P.A.C. Heiberg, 1863 †
- Genus Spermatogonia G.Leuduger-Fortmorel, 1892
- Genus Sphaerophora (A.H. Hassall) J. Lindley, 1846
- Genus Sphaerotermia C.G. Ehrenberg, 1852
- Genus Sphenoneis V.B.A. Trevisan di San Leon, 1848
- Genus Sphenophora F.T. Kützing, 1833
- Genus Sphenophora (Kützing) L. Agassiz, 1843
- Genus Sphenosira C.G. Ehrenberg, 1843
- Genus Sphinctocystis A.H. Hassall, 1845
- Genus Spinivinculum R. Ross, 1990
- Genus Spinodiscus T.V. Desikachary & K.A. Ranjitha Devi in T.V. Desikachary, 1986 †
- Genus Spinosira T.F. Kozyrenko & I.V. Makarova, 1997 †
- Genus Spirodiscina S.Blanco & C.E.Wetzel, 2016 (3)
- Genus Spirodiscus A. Jurilj, 1949 accepted as Spirodiscina S.Blanco & C.E.Wetzel, 2016
- Genus Staurogramma L. Rabenhorst, 1853
- Genus Stauronella C. Mereschkowsky, 1901
- Genus Staurosigma A. Grunow ex Rabenhorst, 1864
- Genus Stelladiscus J. Rattray, 1890
- Genus Stelodiscus S. Komura, 2001 †
- Genus Stenopterotia F. Habirshaw, 1878
- Genus Stephanogonia C.G. Ehrenberg, 1844 †
- Genus Stephanonycites S. Komura, 1999 †
- Genus Stephanosira C.G. Ehrenberg, 1848
- Genus Stichochrysis Pringsheim, 1955
- Genus Stichostaura C.G. Ehrenberg, 1853
- Genus Stictodesmis R.K. Greville, 1863
- Genus Stictodiscella G.B. De Toni, 1894
- Genus Stictolecanon S. Komura, 1999 †
- Genus Stictoneis F.T. Kützing, 1844
- Genus Stigmaphora G.C. Wallich, 1860
- Genus Stoschiella C.Gardner & K.Wenderoth, 1966
- Genus Streptommion S.Komura, 1997 †
- Genus Striatocellina Z.I. Glezer, 1988
- Genus Strombus F. Schütt ex A.F. Castracane, 1892
- Genus Sturtgrovea O. Kuntze, 1898
- Genus Sturtiella R. Simonsen & H.-J. Schrader, 1974 †
- Genus Stylaria Hooker
- Genus Stylobiblium C.G. Ehrenberg, 1845 †
- Genus Styloneis C.G. Ehrenberg, 1844
- Genus Stylorium S. Komura, 1999 †
- Genus Suriraya E. Pfitzer, 1871
- Genus Symblepharis C.G. Ehrenberg, 1873
- Genus Symbolophora C.G. Ehrenberg, 1844
- Genus Syncyclia C.G. Ehrenberg, 1837
- Genus Syrinx A.C.J. Corda, 1835
- Genus Systephania C.G. Ehrenberg, 1844 †
- Genus Szechenyia J. Pantocsek, 1903
- Genus Tabulina J. Brun in J. Brun & J. Tempère, 1889 †
- Genus Temperea M. Peragallo in J. Tempère & H. Peragallo, 1908
- Genus Temperella F.W. Mills, 1935 †
- Genus Tessela accepted as Tessella G.Playfair, 1915
- Genus Tessella C.G. Ehrenberg, 1837
- Genus Tetrachaeta C.G. Ehrenberg, 1844
- Genus Tetralophus S. Komura, 2007 †
- Genus Tetramphora C. Mereschkowsky, 1903 (9)
- Genus Tetrapodiscus C.G. Ehrenberg, 1843
- Genus Thamnodiscus S. Komura, 1999 †
- Genus Thaumaleorhabdium V.B.A. Trevisan di San Leon, 1848
- Genus Thaumatonema R.K. Greville, 1863 †
- Genus Thumia P.T. Cleve ex F.B. Taylor, 1929
- Genus Tibiella C.E. Bessey, 1900
- Genus Tortilaria W.J. Barker & S.H. Meakin, 1948
- Genus Toxosira A. de Brébisson ex M. Peragallo, 1903
- Genus Triaulacias C.G. Ehrenberg, 1844
- Genus Tribrachia A. Mann, 1925
- Genus Triceras Lobarzewski
- Genus Trifonovia M.S.Kulikovskiy & H.Lange-Bertalot, 2012 (1)
- Genus Tripterion R.W. Holmes, S. Nagasawa & H. Takano, 1993
- Genus Trisystema S. Komura, 2005 †
- Genus Trochosira F. Kitton, 1871 †
- Genus Trochosirella S. Komura, 1996 †
- Genus Trochosiropsis Z.I. Glezer, 1984
- Genus Trochus R. Gersonde & D.M. Harwood, 1990 †
- Genus Tropidosiphonus S. Komura, 1994
- Genus Truania J. Pantocsek, 1886 †
- Genus Tryblioptychus N.I. Hendey, 1958
- Genus Tschestnovia J. Pantocsek, 1889 (1)
- Genus Tubaformis Gombos A. M. Jr., 1983 †
- Genus Tubularia J. Brun, 1894
- Genus Tubulariella P.C. Silva, 1970 †
- Genus Tumulopsis N.I. Hendey, 1982 †
- Genus Tursiocola R.W. Holmes, S. Nagasawa & H. Takano, 1993 (7)
- Genus Undatodiscus E.G. Lupikina, 1984 †
- Genus Unguiella S. Komura, 1996 †
- Genus Upothema J.A. Long, D.P. Fuge & J. Smith, 1946 †
- Genus Valdiviella A.F.W. Schimper in G. Karsten, 1907
- Genus Vanheurckella J. Pantocsek, 1892 †
- Genus Vanhoeffenus H. Heiden & R.W. Kolbe, 1928
- Genus Vavia A. Missuna, 1914
- Genus Veniaminia N.I. Strelnikova, 1997 †
- Genus Vernadskowia A. Missuna, 1914
- Genus Vesiculifera A.H. Hassall, 1845
- Genus Vikingea A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 (1)
- Genus Vulcanella P.A.Sims & A.D.Mahood, 1998 †
- Genus Weissflogia C. Janisch, 1888
- Genus Willemoesia F. Castracane, 1886
- Genus Williamsella C.L.Graeff, J.P.Kociolek & S.R.Rushforth, 2013 (2)
- Genus Wittia J. Pantocsek, 1889 †
- Genus Wrightia E. O'Meara, 1867
- Genus Xanthioisthmus I.Suto, 2006 †
- Genus Xanthiopsis F. Wolle, 1890
- Genus Xanthiopyxis (C.G. Ehrenberg) C.G. Ehrenberg, 1845 †
- Genus Xystotheca G D. Hanna, 1932 †
- Genus Zotheca J. Pantocsek, 1902
- Subclass Bacillariophycidae (4 408)
- Subclass Coscinodiscophycidae (878)
- Subclass Fragilariophycidae (483)
- Order Centrales
