DiatomBase
Between brackets is the number of accepted extant species
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- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Superorder Bacillariophycanae (4 083)
- Order Achnanthales (438)
- Order Bacillariales (357)
- Order Cymbellales (792)
- Order Dictyoneidales
- Order Lyrellales (15)
- Order Mastogloiales (88)
- Order Naviculales (2 077)
- Suborder Diploneidineae
- Suborder Naviculineae (12)
- Suborder Neidiineae (330)
- Suborder Phaeodactylineae
- Suborder Sellaphorineae
- Family Amphipleuraceae Grunow, 1862 (162)
- Family Diploneidaceae D. G. Mann, 1990 (116)
- Genus Diploneis (C. G. Ehrenberg) P.T. Cleve, 1894 (116)
- Species Diploneis abscondita Lange–Bertalot & G. Hofmann, 2016
- Species Diploneis aculeata Anisimova, 1951
- Species Diploneis adeliae Manguin, 1960
- Species Diploneis adiaphana Schrader, 1969
- Species Diploneis adonis (J.Brun) Cleve, 1894 accepted as Navicula adonis var. adonis Brun in Brun & Tempère, 1889
- Species Diploneis advena (A.Schmidt) Cleve, 1894
- Species Diploneis aequorea H.Heiden
- Species Diploneis aestica
- Species Diploneis aestiva (Donkin) Cleve, 1894 accepted as Diploneis aestiva var. aestiva (Donkin) Cleve, 1894
- Species Diploneis aestuari Hustedt, 1939
- Species Diploneis aestuarii Hustedt, 1939 accepted as Diploneis aestuari Hustedt, 1939
- Species Diploneis aethiopum Ehrenberg, 1854
- Species Diploneis africana H.Heiden
- Species Diploneis alpina Meister, 1912
- Species Diploneis altana Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis amicula Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis amphisbaena Manicharova, 1950
- Species Diploneis andama Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis andesitica (Pantocsek) F.W. Mills, 1934 accepted as Navicula andesitica Pantocsek, 1889
- Species Diploneis andina Frenguelli, 1942 accepted as Muelleria andina (Frenguelli) Guerrero, Vouilloud & Serino, 2024
- Species Diploneis angusta Jovanovska et al., 2023
- Species Diploneis antinitescens (M.Peragallo) F.W.Mills, 1934 accepted as Navicula antinitescens M.Peragallo, 1908
- Species Diploneis antiqua Cleve-Euler, 1953
- Species Diploneis aokiensis M.Idei, 2013
- Species Diploneis apis (Ehrenberg) Ehrenberg, 1845 accepted as Pinnularia apis Ehrenberg, 1843
- Species Diploneis apis (Donkin) F.W. Mills, 1934
- Species Diploneis apis (Kützing) F.W. Mills, 1934
- Species Diploneis arctica Cleve, 1898
- Species Diploneis arctica (Lange–Bertalot) Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis areolata Cleve, 1894
- Species Diploneis argentina (Frenguelli) Frenguelli, 1945
- Species Diploneis atmosphaerica (Ehrenberg) R.Jahn & W.-H.Kusber, 2004 accepted as Cocconeis atmosphaerica Ehrenberg, 1854
- Species Diploneis baicalensis Skvortzov & Meyer, 1928
- Species Diploneis baicaloculata Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis baicaloparma Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis baicalpetersenii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis balcanica N.G.Ognjanova-Rumenova & K.Buczkó, 2010
- Species Diploneis barbatula Skvortzov, 2012
- Species Diploneis basilica (Brun) F.W. Mills, 1934 accepted as Navicula basilica Brun, 1891
- Species Diploneis beyrichiana (A.Schmidt) A.Amossé, 1924 accepted as Navicula beyrichiana f. beyrichiana Schmidt in Schmidt et al., 1881
- Species Diploneis binaria (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula binaria Schmidt in Schmidt et al., 1875
- Species Diploneis bioculata (Grunow in Schmidt et al.) Cleve, 1894 accepted as Navicula bioculata var. bioculata Grunow in Schmidt et al., 1881
- Species Diploneis biremiformis S.J.M. Droop, 1998
- Species Diploneis biseriata Cleve, 1894
- Species Diploneis boldtiana Cleve, 1891
- Species Diploneis bombiformis Cleve, 1894
- Species Diploneis bomboides (A.W.F.Schmidt) Cleve, 1894 accepted as Navicula bomboides var. bomboides Schmidt, 1872
- Species Diploneis bombus (Ehrenberg) Ehrenberg, 1853
- Species Diploneis bombus Cleve-Euler in Backman & Cleve-Euler Backman, 1922 accepted as Diploneis bombus (Ehrenberg) Ehrenberg, 1853
- Species Diploneis borealis (Grunow) Cleve, 1894 accepted as Navicula smithii f. borealis Grunow, 1884
- Species Diploneis borostelekiana Pantocsek, 1908
- Species Diploneis branchiata (Mann) F.W. Mills, 1934 accepted as Navicula branchiata Mann, 1925
- Species Diploneis budayana (Pantocsek) Jurilj, 1954 accepted as Navicula budayana Pantocsek, 1892
- Species Diploneis burgitensis Prudent, 1905
- Species Diploneis buriatica Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis caffra (Giffen) A. Witkowski, H. Lange-Bertalot & D. Metzeltin, 2000 accepted as Diploneis interrupta var. caffra Giffen, 1970
- Species Diploneis calcilacustris Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis californica Stancheva & Manoylov, 2018
- Species Diploneis campylodiscus (Grunow in Schmidt et al.) Cleve, 1894 accepted as Navicula campylodiscus var. campylodiscus Grunow in Schmidt et al., 1875
- Species Diploneis carpathorum (Pantocsek) Pantocsek accepted as Navicula carpathorum var. carpathorum Pantocsek, 1892
- Species Diploneis cerebrum Pennesi, Caputo & Lobban in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis chersonensis (Grunow) Cleve, 1894
- Species Diploneis chersonensis Grove
- Species Diploneis chilensis (Hustedt) H. Lange-Bertalot in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000 accepted as Diploneis smithii var. chilensis Hustedt, 1927
- Species Diploneis chinensis Cleve, 1894
- Species Diploneis circumnodosa (Brun) Cleve, 1894 accepted as Navicula circumnodosa Brun, 1891
- Species Diploneis clara Jovanovska et al., 2023
- Species Diploneis claustra Lobban & Pennesi in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis clepsydra Cleve, 1894
- Species Diploneis clevei Fontell, 1917
- Species Diploneis coarctata (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula coarctata Schmidt in Schmidt et al., 1875
- Species Diploneis cocquytiana Jovanovska et al., 2023
- Species Diploneis coffeiformis (Schmidt) Cleve, 1894
- Species Diploneis colae S.J.M. Droop, 1998
- Species Diploneis compar (Janisch in Schmidt et al.) Cleve, 1894 accepted as Navicula compar Janisch in Schmidt et al., 1881
- Species Diploneis confecta (A.Schmidt) F.W.Mills, 1934 accepted as Navicula confecta A.Schmidt, 1875
- Species Diploneis congrua (Janisch in Schmidt et al.) Cleve, 1894 accepted as Navicula congrua Janisch in Schmidt et al., 1881
- Species Diploneis conopeata Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis conops Ehrenberg, 1854
- Species Diploneis constantinii (Skvortzov) Skabichevskij
- Species Diploneis constricta (Grunow) Cleve, 1894 accepted as Navicula constricta Grunow, 1860
- Species Diploneis contigua (A. Schmidt) Cleve, 1894 accepted as Navicula contigua var. contigua Schmidt in Schmidt et al., 1875
- Species Diploneis contraversa (Mann) F.W. Mills, 1934
- Species Diploneis costata Skvortzov, 2012
- Species Diploneis crabro (Ehrenberg) Ehrenberg, 1854 accepted as Pinnularia crabro Ehrenberg, 1844
- Species Diploneis crabroniformis (Grunow in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula crabroniformis Grunow in Schmidt et al., 1875
- Species Diploneis crassa Missuna, 1914
- Species Diploneis crassibiseriata Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis craticula Pennesi, Caputo & Lobban in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis crispa Pennesi, Caputo & Lobban in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis cristata Jovanovska et al., 2023
- Species Diploneis curiosa Metzeltin, Lange-Bertalot & Nergui, 2009
- Species Diploneis cynthia (A.Schmidt) Cleve, 1894 accepted as Navicula cynthia var. cynthia Schmidt in Schmidt et al., 1875
- Species Diploneis czekehazensis (Pantocsek) F.W. Mills, 1934
- Species Diploneis dalmatica (Grunow) Cleve, 1894 accepted as Navicula dalmatica var. dalmatica Grunow, 1860
- Species Diploneis debyi (Pantocsek) Cleve, 1894 accepted as Navicula debyi var. debyi Pantocsek, 1886
- Species Diploneis decipiens A.Cleve, 1915
- Species Diploneis decora Jovanovska et al., 2023
- Species Diploneis demta (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula demta Schmidt in Schmidt et al., 1881
- Species Diploneis densestriata (Schmidt in Schmidt et al.) Boyer, 1927
- Species Diploneis densistriata (Schmidt in Schmidt et al.) F.W. Mills, 1934
- Species Diploneis didelta Ehrenberg
- Species Diploneis didyma (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula didyma Schmidt in Schmidt et al., 1881
- Species Diploneis didymus (Ehrenberg) Ehrenberg, 1839 accepted as Pinnularia didyma Ehrenberg, 1844
- Species Diploneis dilatata (M. Peragallo) Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis diminuta (Cleve-Euler) Cleve-Euler, 1953 accepted as Diploneis chersonensis var. diminuta Cleve-Euler, 1915
- Species Diploneis dimorpha Hustedt, 1959
- Species Diploneis diplosticta (Grunow) Hustedt, 1937 accepted as Navicula diplosticta Grunow in Schmidt et al., 1875
- Species Diploneis dirhombus (Schmidt in Schmidt et al.) F.W. Mills, 1934
- Species Diploneis discrepans (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula discrepans Schmidt in Schmidt et al., 1875
- Species Diploneis disjuncta Jovanovska et al., 2023
- Species Diploneis dissipata Jovanovska et al., 2023
- Species Diploneis distinctebipunctata Jovanovska et al., 2023
- Species Diploneis disturbata Jurilj, 1957
- Species Diploneis divergens (A.Schmidt) Cleve, 1894 accepted as Navicula divergens (W.Smith) Grunow, 1860
- Species Diploneis doczyi (Pantocsek)
- Species Diploneis dombilitensis
- Species Diploneis domblittensis (Grunow) Cleve, 1894 accepted as Navicula expleta var. domblittensis Grunow, 1882
- Species Diploneis donkinii (Schmidt) F.W. Mills, 1934 accepted as Navicula donkinii A.Schmidt, 1874
- Species Diploneis duplex Jovanovska et al., 2023
- Species Diploneis duplopunctata Fontell, 1917
- Species Diploneis elesdiana (Pantocsek) Jurilj, 1957 accepted as Navicula elesdiana Pantocsek, 1886
- Species Diploneis elfvingiana Fontell, 1917
- Species Diploneis elliptica (Kützing) Cleve, 1894
- Species Diploneis ellipticolinearis Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis elongata Jovanovska et al., 2023
- Species Diploneis entomon (Ehrenberg) Cleve, 1894 accepted as Navicula entomon var. entomon Ehrenberg, 1840
- Species Diploneis eudoxia (A.Schmidt) E.Jorgensen, 1905 accepted as Navicula eudoxia var. eudoxia Schmidt in Schmidt et al., 1875
- Species Diploneis eugenia (A.Schmidt) Boyer, 1927 accepted as Navicula eugenia A.Schmidt, 1874
- Species Diploneis excentrica Boyer, 1916
- Species Diploneis exemta (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula exemta A. Schmidt, 1874
- Species Diploneis eximia Metzeltin, Lange-Bertalot & Nergui, 2009
- Species Diploneis expedita (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula expedita Schmidt in Schmidt et al., 1881
- Species Diploneis expleta (A.Schmidt) Boyer, 1927 accepted as Navicula notabilis var. expleta Schmidt, 1874
- Species Diploneis faba Ehrenberg, 1845
- Species Diploneis fenestrata J.C.Taylor & B.Karthick, 2014
- Species Diploneis finica
- Species Diploneis finnica (Ehrenberg) Cleve, 1891 accepted as Cocconeis finnica Ehrenberg, 1838
- Species Diploneis finnicoburyatica Lange-Bertalot & Kulikovskiy, 2015
- Species Diploneis fontanella Lange-Bertalot, 2004
- Species Diploneis fontium Reichardt & Lange-Bertalot, 2004
- Species Diploneis formica H.Okuno, 1952
- Species Diploneis fossa Jovanovska et al., 2023
- Species Diploneis frickei (H.F.Van Heurck) H.Heiden accepted as Navicula frickei Van Heurck, 1909
- Species Diploneis fusca (W.Gregory) Cleve, 1894 accepted as Navicula smithii var. fusca Gregory, 1857
- Species Diploneis futilis (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula futilis Schmidt in Schmidt et al., 1875
- Species Diploneis ganga Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis gemmata (Greville) Cleve, 1894 accepted as Navicula gemmata var. gemmata Greville, 1859
- Species Diploneis gemmata Ehrenberg, 1856
- Species Diploneis gemmatula (Grunow in Schmidt et al.) Cleve, 1894 accepted as Navicula gemmatula var. gemmatula Grunow in Schmidt et al., 1875
- Species Diploneis giebelii (Schmidt) F.W. Mills, 1934 accepted as Navicula giebelii Schmidt, 1874
- Species Diploneis gigantea Jovanovska et al., 2023
- Species Diploneis glabra Østrup, 1918
- Species Diploneis glacialis Ehrenberg, 1862
- Species Diploneis goohon Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis gorjanovici
- Species Diploneis gorjanovicii (Pantocsek) Hustedt, 1937 accepted as Navicula gorjanovicii var. gorjanovicii Pantocsek, 1886
- Species Diploneis gracilis Ehrenberg, 1873
- Species Diploneis graeffii (Grunow ex A.Schmidt) Cleve, 1894 accepted as Navicula graeffii f. graeffii Grunow in Schmidt et al., 1875
- Species Diploneis gravelleana Hagelstein, 1939
- Species Diploneis gruendleri (A.Schmidt) Cleve, 1894 accepted as Navicula gruendleri Schmidt, 1873
- Species Diploneis grunowii (Rabenhorst) F.W. Mills, 1934 accepted as Navicula grunowii f. grunowii Rabenhorst, 1864
- Species Diploneis guinardiana (Brun in Brun & Tempère) Cleve, 1894 accepted as Navicula guinardiana Brun in Brun & Tempère, 1889
- Species Diploneis gyrinida (Mann) F.W. Mills, 1934 accepted as Navicula gyrinida Mann, 1907
- Species Diploneis hannai Frenguelli, 1934 †
- Species Diploneis hantkenii (Pantocsek) Loseva, 1982 accepted as Navicula hantkenii Pantocsek, 1889
- Species Diploneis haploa Schrader, 1969
- Species Diploneis heemskerkiana (Brockmann) S.J.M.Droop, 1996
- Species Diploneis heisingeriae Jurilj, 1954
- Species Diploneis heteromorphiforma Metzeltin, Lange-Bertalot & Nergui, 2009
- Species Diploneis hilarula (Pantocsek) F.W. Mills, 1934 accepted as Navicula hilarula Pantocsek, 1892
- Species Diploneis hinziae Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis hormopunctata Hohn & Hellerman, 1966
- Species Diploneis hornigii (Pantocsek) F.W. Mills, 1934 accepted as Navicula hornigii Pantocsek, 1892
- Species Diploneis hudsonis (Grunow) Cleve, 1894 accepted as Navicula hudsonis Grunow, 1891
- Species Diploneis hustedtii Meister, 1934 (1935)
- Species Diploneis hyalina (Donkin) Cleve, 1894 accepted as Navicula hyalina f. hyalina Donkin, 1861
- Species Diploneis hyalina Ehrenberg, 1845
- Species Diploneis hyperborea (Grunow) Cleve, 1894 accepted as Navicula hyperborea Grunow, 1860
- Species Diploneis ideii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis imperalis Ehrenberg, 1845
- Species Diploneis implicatus Pomazkina, Rodionova & Sherbakova
- Species Diploneis inaequalis Østrup, 1918
- Species Diploneis incurvata (Gregory) Cleve, 1894 accepted as Navicula incurvata Gregory, 1856
- Species Diploneis indigens (Mann) F.W. Mills, 1934 accepted as Navicula indigens Mann, 1925
- Species Diploneis infernalis Lange-Bertalot & K.Krammer, 2007
- Species Diploneis ingens (Mann) VanLandingham, 1979 accepted as Navicula ingens Mann, 1925
- Species Diploneis ingens (Mann) VanLandingham, 1975 accepted as Navicula ingens Mann, 1925
- Species Diploneis inscripta Cleve, 1894
- Species Diploneis insolitus Hohn & Hellerman, 1966
- Species Diploneis interrupta (Kützing) Cleve, 1894 accepted as Navicula interrupta var. interrupta Kützing, 1844
- Species Diploneis invenusta (Mann) F.W. Mills, 1934 accepted as Navicula invenusta Mann, 1907
- Species Diploneis jasnitskii Skabichevskii, 1936
- Species Diploneis kahlii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
- Species Diploneis kawabatae Gerd Moser
- Species Diploneis kilhamiana Jovanovska et al., 2023
- Species Diploneis konstantini Skabichevskii, 1952
- Species Diploneis krammeri Lange-Bertalot & E.Reichardt, 2000
- Species Diploneis kuetzingii (Grunow) Cleve, 1894 accepted as Navicula kuetzingii Grunow, 1860
- Species Diploneis laciniosa (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula laciniosa Schmidt in Schmidt et al., 1875
- Species Diploneis lacrimans (Schmidt in Schmidt et al.) Hustedt, 1937 accepted as Navicula lacrimans var. lacrimans Schmidt in Schmidt et al., 1875
- Species Diploneis lacuslemanii Brun, 1895
- Species Diploneis lacustris Rodionova, Pomazkina & Sherbakova
- Species Diploneis ladogensis P.T. Cleve, 1891
- Species Diploneis lata Skvortzow, 1937
- Species Diploneis late-elliptica Skabichevskii, 1936
- Species Diploneis latefurcata (C.W.Fontell) Cleve-Euler, 1953 accepted as Diploneis elfvingiana var. latefurcata C.W.Fontell, 1917
- Species Diploneis latissima Jovanovska et al., 2023
- Species Diploneis latiuscula Jovanovska et al., 2023
- Species Diploneis lenzii Krasske, 1939
- Species Diploneis lesinensis Cleve, 1894
- Species Diploneis letourneuri Cleve, 1894
- Species Diploneis levicostata Jousé, 1934
- Species Diploneis lianjiangensis Chin & Lin, 1979
- Species Diploneis limosa Jovanovska et al., 2023
- Species Diploneis linearielliptica D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Species Diploneis linearifera M.Idei, 2013
- Species Diploneis linearis Otto Müller, 1909 accepted as Muelleria linearis (Otto Müller) Frenguelli, 1945
- Species Diploneis lineata (Donkin) Cleve, 1894 accepted as Navicula lineata var. lineata Donkin, 1858
- Species Diploneis litoralis (Donkin) Cleve, 1894 accepted as Navicula littoralis var. littoralis Donkin, 1870
- Species Diploneis littoralis (Donkin) Cleve, 1894
- Species Diploneis lulensis Cleve-Euler, 1953
- Species Diploneis lunata Jovanovska et al., 2023
- Species Diploneis lusatica Lange–Bertalot & G. Hofmann, 2016
- Species Diploneis madrae (Hanna & Grant) F.W. Mills, 1934 accepted as Navicula madrae Hanna & Grant, 1926
- Species Diploneis maeandra Cleve-Euler, 1922
- Species Diploneis major Cleve, 1894
- Species Diploneis major Jovanovska et al., 2023
- Species Diploneis manguinii Fusey, 1948
- Species Diploneis margarita (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula margarita Schmidt in Schmidt et al., 1892
- Species Diploneis marginata Schmidt, 1874
- Species Diploneis marginestriata Hustedt, 1922
- Species Diploneis mauleri (Brun) Cleve, 1894 accepted as Navicula mauleri var. mauleri Brun, 1880
- Species Diploneis mawsmaii Bhatt & B.Karthick, 2020
- Species Diploneis mediterranea (Grunow) Cleve, 1894 accepted as Navicula gemmata var. mediterranea Grunow, 1875
- Species Diploneis mesolia Ehrenberg, 1872
- Species Diploneis metzeltinii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis meyeri Skabichevskii, 1936
- Species Diploneis meyeri Skvortzow, 1937
- Species Diploneis microtatos (Pantocsek) Cleve, 1894 accepted as Navicula microtatos var. microtatos Pantocsek, 1886
- Species Diploneis mimula (Mann) F.W. Mills, 1934 accepted as Navicula mimula Mann, 1925
- Species Diploneis minima Hustedt, 1956
- Species Diploneis minuta J.B.Petersen, 1928
- Species Diploneis mirabilis Cleve accepted as Navicula mirabilis Castracane, 1886
- Species Diploneis mirabilis König, 1959
- Species Diploneis modica Hustedt, 1945
- Species Diploneis modicahassiaca Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis modicella Cholnoky, 1963
- Species Diploneis mongolica Metzeltin, Lange-Bertalot & Nergui, 2009
- Species Diploneis monodi Guermeur, 1954
- Species Diploneis munda (Janisch in Schmidt et al.) Cleve, 1894 accepted as Navicula munda Janisch in Schmidt et al., 1881
- Species Diploneis munge Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis muscaeformis (Grunow in Schmidt et al.) Cleve, 1894 accepted as Navicula muscaeformis var. muscaeformis Grunow in Schmidt et al., 1875
- Species Diploneis musciformis Meyer, 1938
- Species Diploneis nana Jovanovska et al., 2023
- Species Diploneis nanofontanella Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis nanometzeltinii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis natalensis Cholnoky, 1956
- Species Diploneis navicans (Brun in Schmidt et al.) F.W. Mills, 1934
- Species Diploneis nigricans (Pantocsek) F.W. Mills, 1934 accepted as Navicula nigricans Pantocsek, 1892
- Species Diploneis nitescens (Gregory) Cleve, 1894 accepted as Navicula smithii var. nitescens Gregory, 1857
- Species Diploneis nitidula Brun, 1901
- Species Diploneis nonelliptica Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis notabilis (Greville) Cleve, 1894 accepted as Navicula notabilis f. notabilis Greville, 1863
- Species Diploneis notata Østrup, 1918
- Species Diploneis novaeseelandiae (Schmidt in Schmidt et al.) Hustedt, 1937 accepted as Navicula interrupta var. novaeseelandiae Schmidt in Schmidt et al., 1875
- Species Diploneis o’mearii (Grunow) Grunow, 1892 accepted as Navicula o'mearii f. o'mearii Grunow in Cleve & Grunow, 1880
- Species Diploneis oamaruensis (Cleve) Mills, 1934 accepted as Diploneis adonis var. oamaruensis Cleve, 1894
- Species Diploneis obliqua (Brun) Hustedt, 1937 accepted as Navicula didyma var. obliqua Brun, 1895
- Species Diploneis oblongella (Nägeli ex Kützing) Cleve-Euler, 1922 accepted as Navicula oblongella var. oblongella Naegeli in Kutzing, 1849
- Species Diploneis oblongellopsis Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis obtusa Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis ocellata Cleve in Schmidt et al., 1892
- Species Diploneis ocellata Østrup, 1904
- Species Diploneis oculata (Brébisson) Cleve, 1894 accepted as Navicula oculata f. oculata Brebisson in Desmazieres, 1854
- Species Diploneis öelandica Cleve-Euler, 1953
- Species Diploneis oestrupii Hustedt, 1937
- Species Diploneis okhapkinii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis olandica A. Cleve, 1953
- Species Diploneis o'mearii (Grunow manuscript in Cleve, 1894) F.W. Mills, 1934 accepted as Diploneis crabro var. o'meari Grunow in Cleve, 1894
- Species Diploneis o'mearii (Grunow) M. Peragallo, 1897-1903 accepted as Navicula o'mearii f. o'mearii Grunow in Cleve & Grunow, 1880
- Species Diploneis ordines Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis ornamentalis Salah, 1967
- Species Diploneis ornata (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula ornata var. ornata Schmidt in Schmidt et al., 1881
- Species Diploneis ornata Hajós, 1971
- Species Diploneis ostracodarum (Pantocsek) A.Jurilj, 1954 accepted as Navicula ostracodarum Pantocsek, 1892
- Species Diploneis ostrobottnica Cleve-Euler, 1939
- Species Diploneis ovalis (Hilse) Cleve, 1891 accepted as Pinnularia ovalis Hilse, 1860
- Species Diploneis ovalis H. Lange-Bertalot apud H. Lange-Bertalot & S. I. Genkal in H. Lange-Bertalot (ed.), 1999
- Species Diploneis ovulum (Grunow) F.W. Mills, 1934 accepted as Navicula ovulum Grunow, 1860
- Species Diploneis ovumpaschale (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula ovumpaschale Schmidt in Schmidt et al., 1875
- Species Diploneis pagesi (Heribaud) F.W. Mills, 1934 accepted as Navicula pagesi Héribaud, 1902
- Species Diploneis pandura (Brebisson) F.W. Mills, 1934 accepted as Navicula pandura var. pandura Brébisson, 1854
- Species Diploneis panduriformis (Cleve) Cleve, 1893 accepted as Mastogloia panduriformis Cleve, 1881
- Species Diploneis pantocsekii Cleve-Euler, 1953
- Species Diploneis papula (A.W.F.Schmidt) Cleve, 1894
- Species Diploneis parabudayana E.Jovanovska, T.Nakov & Z.Levkov, 2013
- Species Diploneis parahinziae Lange–Bertalot, A. Fuhrmann & H. Ringel, 2016
- Species Diploneis parallelus Loseva, 1982
- Species Diploneis paramarginestriata Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis parauschkaniensis Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis parca (A.Schmidt) Boyer, 1927 accepted as Navicula parca var. parca Schmidt in Schmidt et al., 1875
- Species Diploneis parma Cleve, 1891
- Species Diploneis partita (Mann) F.W. Mills, 1934 accepted as Navicula partita Mann, 1925
- Species Diploneis patagonica Otto Müller, 1909 accepted as Muelleria patagonica (O.Müller) Frenguelli, 1945
- Species Diploneis patricia (Mann) VanLandingham, 1979 accepted as Navicula patricia Mann, 1925
- Species Diploneis patricia (Mann) VanLandingham, 1975 accepted as Navicula patricia Mann, 1925
- Species Diploneis pearsalli Salah, 1955
- Species Diploneis pedalis (Brun) F.W. Mills, 1934 accepted as Navicula pedalis Brun, 1891
- Species Diploneis pelagi (Schmidt in Schmidt et al.) Boyer, 1927 accepted as Navicula pelagi Schmidt in Schmidt et al., 1875
- Species Diploneis perforata Jurilj, 1957
- Species Diploneis pervasta (Pantocsek) F.W. Mills, 1934 accepted as Navicula pervasta Pantocsek, 1892
- Species Diploneis peterseni Hustedt, 1937 accepted as Diploneis petersenii Hustedt, 1937
- Species Diploneis petersenii Hustedt, 1937
- Species Diploneis pfitzeriana (O'Meara) R.Ross, 1986 accepted as Navicula pfitzeriana O'Meara, 1876
- Species Diploneis pinquis F.W. Mills, 1934
- Species Diploneis placida (Schmidt in Schmidt et al.) Hustedt, 1937 accepted as Navicula placida var. placida Schmidt in Schmidt et al., 1892
- Species Diploneis platessa Cleve & Grove in Cleve, 1894
- Species Diploneis pneumatica S.J.M. Droop, 1998
- Species Diploneis poretzkyi Tscheremissinova, 1956
- Species Diploneis poroidea Jurilj, 1957
- Species Diploneis praeclara (Pantocsek) Cleve-Euler, 1934 accepted as Navicula praeclara Pantocsek, 1892
- Species Diploneis praeflua (Pantocsek) F.W. Mills, 1934 accepted as Navicula praeflua Pantocsek, 1892
- Species Diploneis praerupta Goretskii, 1949
- Species Diploneis praesejuncta S.J.M. Droop, 1998
- Species Diploneis praestes (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula praestes Schmidt in Schmidt et al., 1875
- Species Diploneis praetermissa Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis prisca (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula prisca Schmidt in Schmidt et al., 1875
- Species Diploneis prisca Jurilj, 1957
- Species Diploneis prominula (Schmidt in Schmidt et al.) Fricke, 1902 accepted as Navicula prominula Schmidt in Schmidt et al., 1875
- Species Diploneis propinqua (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula propinqua Schmidt in Schmidt et al., 1875
- Species Diploneis proserpinae Ehrenberg, 1858
- Species Diploneis pseudaokiensis Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis pseudobombiformis Hustedt, 1937
- Species Diploneis pseudofusca (Pantocsek) F.W. Mills, 1934 accepted as Navicula pseudofusca Pantocsek, 1886
- Species Diploneis pseudogemmata (Pantocsek) F.W. Mills, 1934 accepted as Navicula pseudogemmata Pantocsek, 1892
- Species Diploneis pseudomeyeri Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis pseudopetersenii Cholnoky, 1963
- Species Diploneis pseudovalis Hustedt, 1930
- Species Diploneis puella (Schumann) Cleve, 1894 accepted as Navicula puella Schumann, 1867
- Species Diploneis puellafallax Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis puelloides Fusey, 1950
- Species Diploneis pulchella Kisselev, 1931
- Species Diploneis pulcherrima Hustedt, 1938
- Species Diploneis pulchra E.Jovanovska, T.Nakov & Z.Levkov, 2013
- Species Diploneis pullus Ehrenberg, 1872
- Species Diploneis pumicosus Sherbakova, Pomazkina & Rodionova
- Species Diploneis pupula Mereschkowsky, 1903
- Species Diploneis pygmaea Mayer, 1913
- Species Diploneis quasispinulosa Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis rauhialensis Sheshukova-Poretskaya, 1955
- Species Diploneis recta (Brun & Héribaud in Héribaud) Boyer, 1927 accepted as Navicula recta Brun & Héribaud in Héribaud, 1893
- Species Diploneis reichardtii (Grunow in Schmidt et al.) Heiden in Heiden & Kolbe, 1928 accepted as Navicula reichardtii Grunow, 1880
- Species Diploneis reticulata Jurilj, 1957
- Species Diploneis rex S.J.M.Droop, 1996
- Species Diploneis rhombica Skabichevskii, 1936
- Species Diploneis rhombus Ehrenberg, 1856
- Species Diploneis rimosa Pennesi & Caputo in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis robusta (Cleve-Euler) Cleve-Euler in Backman & Cleve-Euler, 1922 accepted as Diploneis boldtiana var. robusta Cleve-Euler, 1915
- Species Diploneis robustus Subrahmanyan, 1946
- Species Diploneis rostrata Wood, 1961
- Species Diploneis rotunda E.Jovanovska, T.Nakov & Z.Levkov, 2013
- Species Diploneis rouhialensis Brander, 1943
- Species Diploneis rouxioides Schrader, 1969
- Species Diploneis rupestris Skvortzow, 1938
- Species Diploneis salzburgeri Jovanovska in Jovanovska et al., 2023
- Species Diploneis schmidtii Cleve, 1894
- Species Diploneis sejuncta E.Jorgensen, 1905 accepted as Navicula sejuncta var. sejuncta Schmidt, 1874
- Species Diploneis separanda Lange-Bertalot, 2004
- Species Diploneis serratula (Grunow) Hustedt, 1937 accepted as Navicula serratula Grunow in Schmidt et al., 1875
- Species Diploneis serrulata Jovanovska et al., 2023
- Species Diploneis sharbin Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis sideralis (Brun in Schmidt et al.) Fricke, 1902 accepted as Navicula sideralis Brun in Schmidt et al., 1892
- Species Diploneis simulator (Mann) F.W. Mills, 1934 accepted as Navicula simulator Mann, 1925
- Species Diploneis skvortzovii Skabichevskii, 1936
- Species Diploneis smithi
- Species Diploneis smithii (Brébisson) Cleve, 1894 accepted as Navicula smithii f. smithii Brébisson in W. Smith, 1856
- Species Diploneis solea S.J.M. Droop, 1998
- Species Diploneis sooi Hajós, 1973
- Species Diploneis speciosa (Mann) F.W. Mills, 1934 accepted as Navicula speciosa Mann, 1907
- Species Diploneis spectabilis D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Species Diploneis splendida Cleve, 1894 accepted as Navicula splendida var. splendida Gregory, 1856
- Species Diploneis stagnarum Prudent, 1906
- Species Diploneis stauroneiformis Hendey, 1971
- Species Diploneis stephen-droopii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis stigmosa Heiden & Kolbe, 1928
- Species Diploneis stroemi Hustedt, 1937
- Species Diploneis stroemii Hustedt, 1937
- Species Diploneis subadvena Hustedt, 1937
- Species Diploneis subbaicalensis Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis subcincta (A.Schmidt) Cleve, 1894 accepted as Navicula subcincta f. subcincta Schmidt, 1874
- Species Diploneis subconstricta (A. Cleve) Cleve-Euler, 1953 accepted as Diploneis domblittensis var. subconstricta A.Cleve, 1895
- Species Diploneis submeyeri Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis subnuda (Schmidt in Schmidt et al.) Cleve, 1894 accepted as Navicula subnuda var. subnuda Schmidt in Schmidt et al., 1875
- Species Diploneis suborbicularis (W.Gregory) Cleve, 1894
- Species Diploneis subovalis Cleve, 1894
- Variety Diploneis subovalis var. argentina Frenguelli, 1932 accepted as Diploneis argentina (Frenguelli) Frenguelli, 1945
- Variety Diploneis subovalis var. baikalensis Skvortzow, 1937
- Variety Diploneis subovalis var. cuspidatum Singh, 1962
- Variety Diploneis subovalis var. jogensis Gandhi, 1966
- Variety Diploneis subovalis var. major (Frenguelli)
- Variety Diploneis subovalis var. maxima G. Frenguelli, 1929
- Variety Diploneis subovalis var. minor (Frenguelli) F.W. Mills, 1926 accepted as Navicula subovalis var. minor Frenguelli, 1926
- Variety Diploneis subovalis var. perminuta Cleve-Euler, 1953
- Forma Diploneis subovalis f. novaezealandiae Skvortzow, 1938
- Species Diploneis subrhombica Cleve-Euler, 1922
- Species Diploneis subsmithii Gandhi, 1966
- Species Diploneis sudamericana Vouilloud & Sala in Sala et al., 2018
- Species Diploneis suezii Salah & Tamas, 1968
- Species Diploneis suffocata (Mann) F.W. Mills, 1934 accepted as Navicula suffocata Mann, 1925
- Species Diploneis suspecta (A. Schmidt) Hendey, 1958 accepted as Navicula suspecta var. suspecta Schmidt in Schmidt et al., 1875
- Species Diploneis szontaghii (Pantocsek) Cleve, 1894 accepted as Navicula szontaghii Pantocsek, 1886
- Species Diploneis taiga Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis tanganyikae Jovanovska et al., 2023
- Species Diploneis taschenbergeri (Schmidt in Schmidt et al.) Hustedt, 1937
- Species Diploneis tavcarii Jurilj, 1954
- Species Diploneis tenera Jovanovska et al., 2023
- Species Diploneis tenuibipunctata Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis tessellata Jovanovska et al., 2023
- Species Diploneis tirolensis Lange–Bertalot, 2016
- Species Diploneis toli Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis totarae Schrader, 1969
- Species Diploneis transylvanica E.Jovanovska et al., 2014 †
- Species Diploneis tugelae Cholnoky, 1957
- Species Diploneis tumida Jovanovska et al., 2023
- Species Diploneis tundra Lange–Bertalot & A. Fuhrmann, 2016
- Species Diploneis turgida Skvortzow, 1937
- Species Diploneis uschkaniensis Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis vacillans (A.Schmidt) Cleve, 1894 accepted as Navicula vacillans f. vacillans Schmidt in Schmidt et al., 1875
- Species Diploneis vagabunda (Brun in Schmidt et al.) Cleve, 1894 accepted as Navicula vagabunda Brun in Schmidt et al., 1892
- Species Diploneis vana (Schmidt in Schmidt et al.) F.W. Mills, 1934 accepted as Navicula vana Schmidt in Schmidt et al., 1881
- Species Diploneis vandermerwei B.J.Cholnoky, 1955
- Species Diploneis vespa Cleve, 1894
- Species Diploneis vetula (A.Schmidt) Cleve, 1894 accepted as Navicula vetula A.Schmidt, 1875
- Species Diploneis vetusa Jovanovska, Nakov & Levkov, 2013
- Species Diploneis vetusta E.Jovanovska, T.Nakov & Z.Levkov, 2013
- Species Diploneis voigtii Manguin ex Kociolek & Reviers, 1996
- Species Diploneis volsella Carter & Denny, 1987
- Species Diploneis weissflogii (A.W.F.Schmidt) Cleve, 1894 accepted as Navicula weissflogii A.W.F.Schmidt, 1873
- Species Diploneis weissflogiopsis Lobban & Pennesi in Pennesi, Caputo, Lobban, Poulin & Totti, 2017
- Species Diploneis weretschaginii Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Species Diploneis wolffii Foged, 1957 (1960)
- Species Diploneis yamanakaensis M.Idei, 2013
- Species Diploneis yatukaensis Horikawa & Okuno in Okuno, 1944
- Species Diploneis zannii Frenguelli, 1933
- Species Diploneis zanzibarica (Grunow) Hustedt, 1937 accepted as Navicula interrupta var. zanzibarica Grunow in Schmidt et al., 1875
- Species Diploneis zehenterii Hajós, 1977
- Species Diploneis zhui levkov, Plenković-Moraj & Sun in Sun et al., 2023
- Species Diploneis zula Kulikovskiy & Lange-Bertalot in Kulikovskiy et al., 2015
- Genus Raphidodiscus H.L. Smith ex T. Christian, 1887 †
- Family Metascolioneidaceae S.Blanco & C.E.Wetzel, 2016 (2)
- Family Naviculaceae Kützing, 1844 (866)
- Family Naviculales incertae sedis (7)
- Family Pinnulariaceae D.G. Mann, 1990 (254)
- Family Pleurosigmataceae Mereschkowsky, 1903 (98)
- Family Scolioneidaceae
- Family Scoliotropidaceae Mersechk. (6)
- Family Sellaphoraceae Mereschkowsky, 1902 (74)
- Family Stauroneidaceae D.G. Mann, 1990 (150)
- Order Rhopalodiales (37)
- Order Surirellales (174)
- Order Thalassiophysales (105)
- Superorder Bacillariophycidae incertae sedis (32)
- Superorder Eunotiophycanae (293)
- Subclass Coscinodiscophycidae (877)
- Subclass Fragilariophycidae (483)
- Order Centrales
