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Eunotia C.G. Ehrenberg, 1837

149402  (urn:lsid:marinespecies.org:taxname:149402)

accepted
Genus
Species Eunotia abbottiae S.P.Main, 2006
Species Eunotia altimontana H.Lange-Bertalot, A.Pavlov & Z.Levkov, 2011
Species Eunotia amayae B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia amazonica F.F.Almeida & C.E.Wetzel in Almeida et al., 2018
Species Eunotia ambivalens Lange-Bertalot & Tagliaventi, 2011
Species Eunotia anhuiensis Yang, 1995
Species Eunotia areniverma P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia atomus A.Pavlov & Z.Levkov, 2013
Species Eunotia australofrigida B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia australomaior B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia bauchimiensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia bigibboidea H.Lange-Bertalot & A.Witkowski, 2011
Species Eunotia binthuaniensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia bolavenensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia boomsma P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia botocuda L.F.Costa, D.C.Bicudo & C.E.Wetzel in Costa et al., 2017
Species Eunotia botulitropica C.E.Wetzel & L.F.Costa in Costa et al., 2017
Species Eunotia caenosa Kociolek & Burliga in Burliga et al., 2012
Species Eunotia camacanorum L.F.Costa, C.E.Wetzel & D.C.Bicudo in Costa et al., 2017
Species Eunotia camranhiensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia canicula P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia capitata (Krasske) L.F.Costa & C.E.Wetzel in Costa et al., 2017
Species Eunotia cataracta P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia cisalpina Lange-Bertalot & M.Cantonati, 2011
Species Eunotia clotii B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia crassuloides Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia daklakiensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia delaunayi E.E.Manguin
Species Eunotia diamantina C.E.Wetzel & L.F.Costa in Costa et al., 2017
Species Eunotia dianae-stitinensis H.Lange-Bertalot & A.Witkowski in Lange-Bertalot et al., 2011
Species Eunotia dolium Meunier, 1910
Species Eunotia dorofeyukiae H.Lange-Bertalot & M.S.Kulikovskiy Kulikovskiy et al., 2010
Species Eunotia dorsicrenata Kulikovskiy & Lange-Bertalot, 2015
Species Eunotia elena H.Lange-Bertalot in Lange-Bertalot et al., 2011
Species Eunotia emedii C.E. Wetzel, Lange-Bertalot, D.Bicudo, C.Peres & Ector, 2011
Species Eunotia enigmatica L.F. Costa & C.E. Wetzel in Costa et al., 2017
Species Eunotia enischna P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia ernestii H.Lange-Bertalot in Lange-Bertalot et al., 2011
Species Eunotia fabaeformis A.Pavlov & Z.Levkov, 2013
Species Eunotia fallacoides Lange-Bertalot & M.Cantonati in Cantonati & Lange-Bertalot, 2011
Species Eunotia ferefalcata M.Kulikovskiy & H.Lange-Bertalot in Lange-Bertalot et al., 2011
Species Eunotia feremiserabilis Lange-Bertalot, Bąk & Kociolek in Bak et al., 2017
Species Eunotia filiformis Luo et al., 2019
Species Eunotia formicina H.Lange-Bertalot in Lange-Bertalot et al., 2011
Species Eunotia frickie
  » Variety Eunotia frickie var. elongata Hustedt ex Simonsen, 1987 (uncertain, unassessed)
Species Eunotia friedel-hintziae D.Metzeltin & H.Lange-Bertalot, 2007
Species Eunotia frigida M.G.Potapova, P.B.Hamilton & L.I.Kopyrina, 2014
Species Eunotia fuhrmannii D.Metzeltin & P.Tremarin, 2011
Species Eunotia fureyae H.Lange-Bertalot, 2011
Species Eunotia genkalii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia gibbuolosa (Venkataraman, 1939) Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia glacialis Meister, 1912
  » Variety Eunotia glacialis var. fennoscandica Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia glacialis var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia glacialis var. glacialis Meister, 1912 (uncertain, unassessed)
Species Eunotia gratella Å.Berg
  » Forma Eunotia gratella f. alpha Berg A., 1939 (uncertain, unassessed)
  » Forma Eunotia gratella f. beta A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia gratella f. gratella A. Berg, 1939 (uncertain, unassessed)
Species Eunotia grunowi Å.Berg
  » Forma Eunotia grunowi f. dispersa (Cleve-Euler manuscript, A. Berg) A. Berg, 1939 represented as Eunotia grunowi var. dispersa Cleve-Euler manuscript
  » Variety Eunotia grunowi var. minor (Cleve) Cleve-Euler, 1953 represented as Eunotia impressa var. minor Cleve, 1898
  » Variety Eunotia grunowi var. nodulosa (Meister) A. Berg in man ex. Cleve-Euler, 1954 represented as Eunotia nodulosa Meister, 1932
  » Forma Eunotia grunowi f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. beta Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. eta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. grunowi A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. subundulata Cleve-Euler in Cleve-Euler et al., 1951 (uncertain, unassessed)
  » Forma Eunotia grunowi f. theta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. typica Cleve-Euler, 1951 (uncertain, unassessed)
  » Forma Eunotia grunowi f. uplandica Cleve-Euler in manuscript A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia grunowi f. zeta A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia grunowi var. deflecta A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia grunowi var. dispersa Cleve-Euler manuscript (uncertain, unassessed)
  » Variety Eunotia grunowi var. limacida A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia grunowi var. plana A. Berg in man. ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia grunowi var. subarctica A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia grunowi var. triglyphis A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia grunowi var. uplandica (Berg) Cleve-Euler, 1951 (uncertain, unassessed)
Species Eunotia grunowiana
  » Variety Eunotia grunowiana var. irregularis Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia grunowii Å.Berg, 1939
Species Eunotia gusevii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia gustavoi L.F.Costa in Costa et al., 2017
Species Eunotia hainanensis Zhang & Qi, 1993
Species Eunotia helodesiana Kociolek & Burliga in Burliga et al., 2012
Species Eunotia horstii P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia ibitipocaensis L.C.G. Canani & L.C. Torgan, 2013
Species Eunotia igorii S.Krstic, Z.Levkov & A.Pavlov, 2013
Species Eunotia immanis Kulikovskiy & Lange-Bertalot, 2015
Species Eunotia indomalaica Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia indosinica Glushchenko & Kulikovskiy, 2017
Species Eunotia insubrica Lange-Bertalot & M.Cantonati in Cantonati & Lange-Bertalot, 2011
Species Eunotia isabelensis Lange-Bertalot, Bąk & Kociolek in Bak et al., 2017
Species Eunotia itatiaia-bidens Lange-Bertalot & C.E.Wetzel in Costa et al., 2017
Species Eunotia kareniae D.Metzeltin & Lange-Bertalot, 2007
Species Eunotia karveerensis (Gandhi) Glushchenko & Kulikovskiy, 2017
Species Eunotia kataliniae D.Metzeltin & Lange-Bertalot, 2007
Species Eunotia kayaporum C.E. Wetzel, Lange-Bertalot, D.Bicudo & Ector in Wetzel et al., 2011
Species Eunotia khursevichiae Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia kociolekii P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia korzikovii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia kurtkrammeri M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkowski in Kulikovskiy & Lange-Bertalot, 2012
Species Eunotia langebertalotii Metzeltin, 2012
Species Eunotia laoarcus Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia laosica Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia latinasuta H.Lange-Bertalot in Lange-Bertalot et al., 2011
Species Eunotia leonardii J.C.Taylor & Cocquyt, 2016
Species Eunotia leptocrenata Kulikovskiy & Lange-Bertalot, 2015
Species Eunotia longicamelus L.F.Costa, D.C.Bicudo & C.E.Wetzel in Costa et al., 2017
Species Eunotia macaronesica H.Lange-Bertalot & N.Tagliaventi, 2011
Species Eunotia maconi L.F.Costa, Lange-Bertalot & C.E.Wetzel in Costa et al., 2017
Species Eunotia manguinii Van de Vijver & Jüttner, 2018
Species Eunotia mariovensis A.Pavlov & Z.Levkov, 2013
Species Eunotia mcbridei B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia media
  » Forma Eunotia media f. elongata Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia media f. media A. Cleve, 1895 (uncertain, unassessed)
  » Variety Eunotia media var. jemtlandica Font., 1917 (uncertain, unassessed)
Species Eunotia meisteri Hustedt, 1930
  » Variety Eunotia meisteri var. bidens Hustedt, 1930 (uncertain, unassessed)
  » Variety Eunotia meisteri var. meisteri Hustedt, 1930 (uncertain, unassessed)
Species Eunotia meisterioides H.Lange-Bertalot, 2011
Species Eunotia meridioatlantica Van de Vijver, Wilfert, D.M. John & Lange-Bertalot, 2018
Species Eunotia metamonodon H.Lange-Bertalot, 2011
Species Eunotia michaelis Metzeltin et al. in Metzeltin & Witkowski, 1996
Species Eunotia microcephala Krasske, 1932
  » Variety Eunotia microcephala var. microcephala Krasske, 1932 (uncertain, unassessed)
  » Variety Eunotia microcephala var. tridentata (Mayer) Hustedt, 1932 (uncertain, unassessed)
Species Eunotia mira Å.Berg
  » Forma Eunotia mira f. alpha Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia mira f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia mira f. mira A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia mira var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia mira var. ovata A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia mongolica M.S.Kulikovskiy, H.Lange-Bertalot, A.Witkowski & N.I.Dorofeyuk, 2010
Species Eunotia monodon Ehrenberg, 1843
  » Variety Eunotia monodon var. major (W.Smith) Hustedt
  » Forma Eunotia monodon f. alpina (Kützing) Grunow in Cleve & Moller, 1878 represented as Eunotia alpina Kützing, 1844
  » Forma Eunotia monodon f. major (W. Smith) Hustedt, 1930 represented as Himantidium majus var. majus W. Smith, 1856
  » Variety Eunotia monodon var. bidens (Ehrenberg) Hustedt, 1932 represented as Himantidium bidens var. bidens Ehrenberg, 1843
  » Variety Eunotia monodon var. hankensis (Skvortzow) Scheschukova in Proschkina-Lavrenko, 1950 represented as Eunotia major var. hankensis Skvortzow, 1929
  » Variety Eunotia monodon var. hendecaodon (Ehrenberg) Heribaud, 1893 represented as Eunotia hendecaodon Ehrenberg, 1854
  » Variety Eunotia monodon var. hybrida (Cleve-Euler) A. Berg in man. Cleve-Euler, 1953 represented as Eunotia major f. hybrida Cleve-Euler, 1934
  » Variety Eunotia monodon var. koreana represented as Eunotia parallela var. arcuata (Skvortzov)
  » Variety Eunotia monodon var. tropica (Hustedt) Hustedt, 1927 represented as Eunotia tropica Hustedt, 1927
  » Variety Eunotia monodon var. undulata (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 represented as Eunotia major var. undulata A. Berg in manuscript Cleve-Euler, 1953
  » Forma Eunotia monodon f. bidens W.Smith (uncertain, unassessed)
    » Subforma Eunotia monodon f. bidens koreana (Skvortzov) (uncertain)
  » Forma Eunotia monodon f. bidens Hustedt, 1930 (uncertain, unassessed)
  » Forma Eunotia monodon f. bidens Skvortzow, 1938 (uncertain, unassessed)
  » Forma Eunotia monodon f. curta Grunow, 1881 (uncertain, unassessed)
  » Forma Eunotia monodon f. elongata Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Forma Eunotia monodon f. koreana Skvortzow, 1936 (uncertain, unassessed)
  » Forma Eunotia monodon f. koreana Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Forma Eunotia monodon f. minor Manguin, 1960 (uncertain, unassessed)
  » Forma Eunotia monodon f. monodon Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Eunotia monodon f. robusta Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Forma Eunotia monodon f. undulata Skvortzow, 1936 (uncertain, unassessed)
  » Forma Eunotia monodon f. undulata Cholnoky, 1955 (uncertain, unassessed)
  » Variety Eunotia monodon var. affinis Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia monodon var. amoyensis Skvortzov, 2012 (uncertain)
  » Variety Eunotia monodon var. asiatica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Eunotia monodon var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Eunotia monodon var. brasiliensis Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia monodon var. constricta A.Berg, 1953 (uncertain, unassessed)
  » Variety Eunotia monodon var. constricta Hustedt in Schmidt, 1937 (uncertain, unassessed)
  » Variety Eunotia monodon var. constricta Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia monodon var. dilatata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia monodon var. diodon (Ehrenberg) Grunow, 1867 (uncertain, unassessed)
  » Variety Eunotia monodon var. diodon (Van Heurck) Heribaud, 1893 (uncertain, unassessed)
  » Variety Eunotia monodon var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia monodon var. latestriata Jouravleva in Proschkina-Lavrenko, 1950 (uncertain, unassessed)
  » Variety Eunotia monodon var. maxima Zanon, 1941 (uncertain, unassessed)
  » Variety Eunotia monodon var. minuta (F.W.Hilse) G.L.Rabenhorst (uncertain, unassessed)
  » Variety Eunotia monodon var. neocaledonica Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Variety Eunotia monodon var. paucistriata Skvortzow, 1938 (uncertain, unassessed)
  » Variety Eunotia monodon var. recta M. Peragallo, 1920 (uncertain, unassessed)
  » Variety Eunotia monodon var. suriana Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia monodon var. undulata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia monodon var. undulata Skvortzow & Noda, 1971 (uncertain, unassessed)
Species Eunotia montuosa P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia mourotii B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia muelleri F.Hustedt
  » Forma Eunotia muelleri f. endecaodon Zanon, 1928 (uncertain, unassessed)
  » Forma Eunotia muelleri f. major Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia muelleri f. muelleri Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia mugecuo Luo et al., 2019
Species Eunotia mydohaimasiae P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia myrmica H.Lange-Bertalot, 2011
Species Eunotia naegelii Migula, 1907
  » Variety Eunotia naegelii var. africana (Cholnoky) VanLandingham, 1969 (uncertain, unassessed)
  » Variety Eunotia naegelii var. naegelii Migula, 1907 (uncertain, unassessed)
Species Eunotia namlikiensis Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia nanolusitanica H.Lange-Bertalot, M.H.Novais & L.Ector, 2011
Species Eunotia nanopapilio H.Lange-Bertalot, 2011
Species Eunotia neoscandinavica H.Lange-Bertalot & A.Witkowski, 2011
Species Eunotia ninae M.Potapova, 2014
Species Eunotia norvegica Å.Berg
  » Variety Eunotia norvegica var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia norvegica var. inermis Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia norvegica var. norvegica A. Berg, 1939 (uncertain, unassessed)
Species Eunotia novaeangliae J.Veselá & J.R.Johansen, 2014
Species Eunotia novaisiae H.Lange-Bertalot & L.Ector, 2011
Species Eunotia obesa Cleve
  » Variety Eunotia obesa var. obesa Cleve, 1900 (uncertain, unassessed)
  » Variety Eunotia obesa var. wardii R.M.Patrick, 1958 (uncertain, unassessed)
Species Eunotia obliquestriata P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia odebrechtiana Metzeltin & Lange-Bertalot, 1998
Species Eunotia orthohedra P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia ossicula (Metzeltin & Lange-Bertalot) L.F.Costa in Costa et al., 2017
Species Eunotia ovata Å.Berg
  » Forma Eunotia ovata f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia ovata f. ovata A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia ovata var. densestriata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia ovata var. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia pacificomonodon Lange-Bertalot, Bąk & Kociolek in Bak et al., 2017
Species Eunotia panchpokhariensis S.Krstic, Z.Levkov & A.Pavlov, 2013
Species Eunotia panda J.Veselá & J.R.Johansen, 2014
Species Eunotia pantropica Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia papiliofalsa H.Lange-Bertalot, 2011
Species Eunotia papilioforma P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia parabidens C.E.Wetzel, L.F.Costa & Lange-Bertalot in Costa et al., 2017
Species Eunotia parallela Ehrenberg, 1843
  » Forma Eunotia parallela f. asiatica Skvortzow, 1938 represented as Eunotia parallela var. asiatica (Skvortzov) (unassessed)
  » Forma Eunotia parallela f. media (A. Cleve) A. Berg, 1939 represented as Eunotia media f. media A. Cleve, 1895
  » Variety Eunotia parallela var. pseudoparallela (Cleve-Euler) Cleve-Euler, 1953 represented as Eunotia pseudoparallela Cleve-Euler, 1934
  » Variety Eunotia parallela var. ventralis (Ehrenberg) Grunow, 1865 represented as Eunotia ventralis Ehrenberg, 1843
  » Forma Eunotia parallela f. angusta Jouse & Seczkina, 1960 (uncertain, unassessed)
  » Forma Eunotia parallela f. angustior Grunow, 1881 (uncertain, unassessed)
  » Forma Eunotia parallela f. bidens Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia parallela f. carenagea Maillard, 1978 (uncertain, unassessed)
  » Forma Eunotia parallela f. parallela Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Eunotia parallela f. robusta Fontell, 1917 (uncertain, unassessed)
  » Variety Eunotia parallela var. angusta Grunow, 1884 (uncertain, unassessed)
  » Variety Eunotia parallela var. arcuata Østrup, 1910 (uncertain, unassessed)
  » Variety Eunotia parallela var. arcuata Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia parallela var. arcuata (Skvortzov) (uncertain)
  » Variety Eunotia parallela var. asiatica (Skvortzov) (uncertain)
  » Variety Eunotia parallela var. beta Grunow (uncertain, unassessed)
  » Variety Eunotia parallela var. crassa Grunow, 1884 (uncertain, unassessed)
  » Variety Eunotia parallela var. densestriata Font., 1917 (uncertain, unassessed)
  » Variety Eunotia parallela var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia parallela var. minor Mölder, 1937 (uncertain, unassessed)
  » Variety Eunotia parallela var. robusta Fontell, 1917 (uncertain, unassessed)
Species Eunotia paralleladubia H.Lange-Bertalot & S.Mayama, 2011
Species Eunotia parallelogramma B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia paramuscicola S.Krstic, Z.Levkov & A.Pavlov, 2013
Species Eunotia pararepens M.S.Kulikovskiy, H.Lange-Bertalot, A.Witkowski in KUlikovskiy et al., 2010
Species Eunotia paratridentula Lange-Bertalot & Kulikovskiy in Kulikovskiy et al., 2010
Species Eunotia peruviana E.E.Manguin
  » Forma Eunotia peruviana f. abrupta Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia peruviana f. attenuata Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia peruviana f. peruviana Manguin, 1964 (uncertain, unassessed)
Species Eunotia pierrefuseyi J.C.Taylor & Cocquyt
Species Eunotia platyvalva A.L.Burliga & J.P.Kociolek, 2012
Species Eunotia polyglyphis Grunow, 1881
  » Forma Eunotia polyglyphis f. hexaglyphis (Ehrenberg) Cleve-Euler, 1953 represented as Eunotia hexaglyphis Ehrenberg, 1854
  » Forma Eunotia polyglyphis f. pentaglyphis (Ehrenberg) Cleve-Euler, 1953 represented as Eunotia pentaglyphis Ehrenberg, 1854
  » Forma Eunotia polyglyphis f. septenaria (Ehrenberg) Cleve-Euler, 1953 represented as Eunotia septenaria Ehrenberg, 1854
  » Variety Eunotia polyglyphis var. hexaglyphis (Ehrenberg) Grunow, 1881 represented as Eunotia hexaglyphis Ehrenberg, 1854
  » Variety Eunotia polyglyphis var. pentaglyphis (Ehrenberg) Grunow in Van Heurck, 1881 represented as Eunotia pentaglyphis Ehrenberg, 1854
  » Variety Eunotia polyglyphis var. tetraglyphis (Ehrenberg) Grunow, 1881 represented as Eunotia tetraglyphis Ehrenberg, 1854
  » Forma Eunotia polyglyphis f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia polyglyphis f. polyglyphis Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia polyglyphis f. truncata A. Berg, 1945 (uncertain, unassessed)
  » Variety Eunotia polyglyphis var. excisa Héribaud, 1903 (uncertain, unassessed)
  » Variety Eunotia polyglyphis var. minor Fusey, 1964 (uncertain, unassessed)
Species Eunotia pomeranica Lange-Bertalot, Bak & Witkowski in Lange-Bertalot et al., 2011
Species Eunotia praebidens Å.Berg ex Cleve-Euler, 1953
  » Forma Eunotia praebidens f. minor Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praebidens f. minor Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praebidens f. praebidens A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia praebidens var. compacta (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia praebidens var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia praeminor Å.Berg ex Cleve-Euler, 1953
Species Eunotia praemonos Å.Berg ex Cleve-Euler, 1953
  » Forma Eunotia praemonos f. inflata (Grunow in Van Heurck) Cleve-Euler, 1953 represented as Eunotia praerupta f. inflata (Grunow) J.Frenguelli, 1924
  » Forma Eunotia praemonos f. laticeps (Grunow in Cleve & Grunow) Cleve-Euler, 1953 represented as Eunotia praerupta f. laticeps Grunow in Cleve & Grunow, 1880
  » Forma Eunotia praemonos f. monodon (Østrup) Cleve-Euler, 1953 represented as Eunotia praerupta var. monodon Østrup, 1897
  » Forma Eunotia praemonos f. tibetica (Mereschkowsky) A. Berg in man. Cleve-Euler, 1953 represented as Eunotia praerupta var. tibetica Mereschkowsky, 1906
  » Variety Eunotia praemonos var. curta (Grunow) Cleve-Euler, 1953 represented as Eunotia praerupta f. curta (Grunow) Mayer, 1917
  » Variety Eunotia praemonos var. monodonoides (Mayer) A. Berg in man. Cleve-Euler, 1953 represented as Eunotia praerupta f. monodonoides Mayer, 1918
  » Variety Eunotia praemonos var. muscicola (Petersen) Cleve-Euler, 1953 represented as Eunotia praerupta f. muscicola Petersen, 1928
  » Variety Eunotia praemonos var. tibetica (Mereschkowsky) Cleve-Euler, 1953 represented as Eunotia praerupta var. tibetica Mereschkowsky, 1906
  » Forma Eunotia praemonos f. cornuta (A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. curta (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. curta (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. diminuta Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. genuina (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. plicata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. polaris (A. Berg) A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. praemonos A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. recta Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Forma Eunotia praemonos f. typica Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia praemonos f. typica Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia praemonos var. elongata (A. Cleve) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia praemonos var. ingrata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia praerupta Ehrenberg, 1843
  » Variety Eunotia praerupta var. muscicola Petersen, 1928
  » Variety Eunotia praerupta var. praerupta
  » Forma Eunotia praerupta f. bidens (Ehrenberg; W. Smith) Grunow in Cleve & Grunow, 1880 represented as Eunotia bidens Ehrenberg, 1843
  » Forma Eunotia praerupta f. bidens (Ehrenberg) Hustedt in A. Schmidt, 1911 represented as Himantidium bidens var. bidens Ehrenberg, 1843
  » Forma Eunotia praerupta f. bigibba (Kützing) Grunow in Van Heurck, 1881 represented as Eunotia bigibba Kützing, 1849
  » Forma Eunotia praerupta f. curta (Grunow) Mayer, 1917
  » Forma Eunotia praerupta f. inflata (Grunow) J.Frenguelli, 1924
  » Forma Eunotia praerupta f. pumila (Grunow in Van Heurck) Gutwinski, 1909 represented as Eunotia bigibba var. pumila Grunow, 1881
  » Forma Eunotia praerupta f. pumila (Grunow in Van Heurck) Otto Müller, 1898 represented as Eunotia bigibba var. pumila Grunow, 1881
  » Variety Eunotia praerupta var. herkiniensis (Grunow in Van Heurck) F.W. Mills, 1934 represented as Eunotia bigibba var. herkiniensis Grunow in Van Heurck, 1881
  » Variety Eunotia praerupta var. rupestris (Skvortzow) Ando, 1982 represented as Eunotia bigibba var. rupestris Skvortzow, 1938
  » Variety Eunotia praerupta var. tridentata (Ehrenberg) J.Frenguelli, 1924 represented as Eunotia tridentata Ehrenberg, 1854
  » Variety Eunotia praerupta var. bidens (Ehrenberg) Grunow, 1880 accepted as Eunotia bidens Ehrenberg, 1843 (synonym)
  » Variety Eunotia praerupta var. curta Grunow, 1881 accepted as Eunotia praerupta Ehrenberg, 1843 (synonym)
  » Variety Eunotia praerupta var. inflata Grunow, 1881 accepted as Eunotia inflata (Grunow) Norpel-Schempp & Lange-Bertalot, 1996 (synonym)
  » Forma Eunotia praerupta f. angustior Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia praerupta f. applanata Brun, 1901 (uncertain, unassessed)
  » Forma Eunotia praerupta f. bidens Tikheeva, 1932 (uncertain, unassessed)
  » Forma Eunotia praerupta f. capitata Manguin in Allorge & Manguin, 1941 (uncertain, unassessed)
  » Forma Eunotia praerupta f. compacta Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia praerupta f. compacta Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia praerupta f. concamerata Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia praerupta f. diminuta Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia praerupta f. elongata A. Cleve, 1895 (uncertain, unassessed)
  » Forma Eunotia praerupta f. elongata Mayer & Reinhardt, 1925 (uncertain, unassessed)
  » Forma Eunotia praerupta f. genuina Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia praerupta f. incisa Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia praerupta f. intermedia Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia praerupta f. laticeps Grunow in Cleve & Grunow, 1880 (uncertain, unassessed)
  » Forma Eunotia praerupta f. major Gonzalves & Gandhi, 1952 (uncertain, unassessed)
  » Forma Eunotia praerupta f. minor (Grunow in Van Heurck) Gutwinski, 1909 (uncertain, unassessed)
  » Forma Eunotia praerupta f. minor Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia praerupta f. monodon Wolle, 1890 (uncertain, unassessed)
  » Forma Eunotia praerupta f. monodonoides Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia praerupta f. muscicola Petersen, 1928 (uncertain, unassessed)
  » Forma Eunotia praerupta f. neoebudica Manguin, 1938 (uncertain, unassessed)
  » Forma Eunotia praerupta f. perlonga Cleve-Euler in Cleve-Euler et al., 1951 (uncertain, unassessed)
  » Forma Eunotia praerupta f. perminuta Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia praerupta f. platycephala (Mayer) Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia praerupta f. polaris (A. Berg) Symoens, 1960 (uncertain, unassessed)
  » Forma Eunotia praerupta f. praerupta Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Eunotia praerupta f. subimpressa Mayer, 1913 (uncertain, unassessed)
  » Forma Eunotia praerupta f. typica Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia praerupta f. ventricosa Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia praerupta var. binodis Fusey, 1964 (uncertain, unassessed)
  » Variety Eunotia praerupta var. celtica Fusey, 1951 (uncertain, unassessed)
  » Variety Eunotia praerupta var. excelsa Krasske, 1938 (uncertain, unassessed)
  » Variety Eunotia praerupta var. genuina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia praerupta var. gracilis Anisimova, 1951 (uncertain, unassessed)
  » Variety Eunotia praerupta var. incisa Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia praerupta var. kaczmarskae Foged, 1982 (uncertain, unassessed)
  » Variety Eunotia praerupta var. laticephala Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia praerupta var. lunaris Yakovlev, 1922 (uncertain, unassessed)
  » Variety Eunotia praerupta var. monodon Østrup, 1897 (uncertain, unassessed)
  » Variety Eunotia praerupta var. papilio Grunow (uncertain, unassessed)
  » Variety Eunotia praerupta var. platycephala Mayer, 1916 (uncertain, unassessed)
  » Variety Eunotia praerupta var. simplex Manguin in Bourrelly & Manguin, 1941 (uncertain, unassessed)
  » Variety Eunotia praerupta var. sinica Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia praerupta var. thermalis Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Variety Eunotia praerupta var. tibetica Mereschkowsky, 1906 (uncertain, unassessed)
  » Variety Eunotia praerupta var. tropica E.E.Manguin, 1952 (uncertain, unassessed)
  » Variety Eunotia praerupta var. truncata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
Species Eunotia praeruptabidens
  » Forma Eunotia praeruptabidens f. commutata (Cleve-Euler in man. A. Berg) A. Berg, 1939 represented as Eunotia praeruptabidens var. commutata Cleve-Euler in manuscript A. Berg, 1939
  » Forma Eunotia praeruptabidens f. muscicola (Petersen) A. Berg, 1939 represented as Eunotia praerupta f. muscicola Petersen, 1928
  » Forma Eunotia praeruptabidens f. simplex (Hustedt) A. Berg, 1939 represented as Eunotia arctica var. simplex Hustedt, 1936
  » Forma Eunotia praeruptabidens f. compressa A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptabidens f. polaris A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptabidens f. praeruptabidens (Grunow in Cleve & Grunow; Grunow in Van Heurck) A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia praeruptabidens var. commutata Cleve-Euler in manuscript A. Berg, 1939 (uncertain, unassessed)
Species Eunotia praerupta-minor A.Berg, 1939
Species Eunotia prilezhaevii M.Potapova, 2014
Species Eunotia prolongata F.Hustedt
Species Eunotia prowseii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia pseudincisa Kulikovskiy & Lange-Bertalot, 2015
Species Eunotia pseudoflexuosa F.Hustedt
  » Variety Eunotia pseudoflexuosa var. natalensis Cholnoky, 1956 (uncertain, unassessed)
  » Variety Eunotia pseudoflexuosa var. pseudoflexuosa Hustedt, 1949 (uncertain, unassessed)
Species Eunotia pseudoglacialis E.E.Manguin
  » Variety Eunotia pseudoglacialis var. inflexa Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia pseudoglacialis var. pseudoglacialis Manguin, 1964 (uncertain, unassessed)
Species Eunotia pseudogroenlandica Lange-Bertalot & Tagliaventi, 2011
Species Eunotia pseudoimplicata Lange-Bertalot, L.F.Costa & C.E.Wetzel in Costa et al., 2017
Species Eunotia pseudoindica Frenguelli, 1941
Species Eunotia pseudominor A.Pavlov & Z.Levkov, 2013
Species Eunotia pseudopaludosa B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia pseudopectinalis Hustedt
Species Eunotia pseudotetraodon Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia pyramidata Hustedt, 1913
  » Forma Eunotia pyramidata f. arcuata Krasske, 1939 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. capitata Krasske, 1948 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. heptaodon Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. monodon Krasske, 1939 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. pyramidata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. robusta Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. truncata Manguin, 1964 (uncertain, unassessed)
  » Forma Eunotia pyramidata f. undulata Frenguelli, 1941 (uncertain, unassessed)
  » Variety Eunotia pyramidata var. depressa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia pyramidata var. ventralis Krasske, 1939 (uncertain, unassessed)
Species Eunotia rabenhorsti
  » Forma Eunotia rabenhorsti f. triodon Hustedt, 1949 (uncertain, unassessed)
  » Variety Eunotia rabenhorsti var. africana Hustedt, 1949 (uncertain, unassessed)
Species Eunotia ralitsae B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia reflexa F.Hustedt
  » Forma Eunotia reflexa f. minor Saweljewa-Dolgowa, 1925 (uncertain, unassessed)
  » Forma Eunotia reflexa f. minores Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia reflexa f. reflexa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia reflexa var. maxima F.Hustedt (uncertain, unassessed)
Species Eunotia relicta F.Ferrari, C.E.Wetzel & L.Ector, 2014
Species Eunotia repens Å.Berg, 1939
  » Variety Eunotia repens var. arcuata (Naegeli in Kutzing) Cleve-Euler, 1953 represented as Synedra arcuata Naegeli in Kutzing, 1849
  » Variety Eunotia repens var. steineckei (Petersen) Cleve-Euler, 1953 represented as Eunotia steineckei Petersen, 1930
  » Forma Eunotia repens f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia repens f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia repens f. deflexa Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia repens f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia repens f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia repens f. perminuta Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia repens f. repens A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia repens var. geniculata Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia rhynchocephala Hustedt, 1936
Species Eunotia richbuttensis P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia rudis Cocquyt & M. de Haan, 2016
Species Eunotia rushforthii P.C.Furey, R.L.Lowe & J.R.Johansen, 2011
Species Eunotia saltoensis L.G. de Castro Canani & L. Carvalho Torgan, 2013
Species Eunotia sarek Å.Berg, 1939
  » Forma Eunotia sarek f. bigibba (Kützing) A. Berg, 1939 represented as Eunotia bigibba Kützing, 1849
  » Forma Eunotia sarek f. pumila (Grunow in Van Heurck) A. Berg, 1939 represented as Eunotia bigibba var. pumila Grunow, 1881
  » Forma Eunotia sarek f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. papilio (Ehrenberg) A.Berg (uncertain, unassessed)
  » Forma Eunotia sarek f. sarek A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sarek f. theta A. Berg, 1939 (uncertain, unassessed)
Species Eunotia sarekensis Cleve, 1953
  » Variety Eunotia sarekensis var. bigibba (Kützing) Cleve-Euler, 1953 represented as Eunotia bigibba Kützing, 1849
  » Forma Eunotia sarekensis f. acuminata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia sarekensis f. acuminata (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia sarekensis f. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia sarekensis f. sarekensis A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sarekensis var. collicula A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sarekensis var. minor (Hustedt) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sarekensis var. papilio (Ehrenberg) A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sarekensis var. pumila (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia scardica A.Pavlov & Z.Levkov, 2013
Species Eunotia septentrionalis Østrup, 1897
  » Variety Eunotia septentrionalis var. levistriata (Hustedt in Schmidt et al.) Negoro, 1944 represented as Eunotia levistriata Hustedt in Schmidt et al., 1933
  » Forma Eunotia septentrionalis f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. capitata Foged, 1981 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. crassior Tarnavschi & Jitariu, 1955 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. geniculata A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. oxycephala A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia septentrionalis f. septentrionalis Østrup, 1897 (uncertain, unassessed)
  » Variety Eunotia septentrionalis var. bidens Hustedt, 1932 (uncertain, unassessed)
  » Variety Eunotia septentrionalis var. clevei Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia septentrionalis var. intermedia Negoro, 1944 (uncertain, unassessed)
  » Variety Eunotia septentrionalis var. japonica Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia septentrionalis var. oxycephala (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia serpentinula L.F.Costa & C.E.Wetzel in Costa et al., 2017
Species Eunotia serrula L.F.Costa & D.C.Bicudo in Costa et al., 2017
Species Eunotia silesioscandica H.Lange-Bertalot & E.Sienkiewicz, 2011 †
Species Eunotia spatulata J.Veselá & J.R.Johansen, 2014
Species Eunotia spiculoides Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia stojanovskii A.Pavlov & Z.Levkov, 2013
Species Eunotia streltsovii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia subantarctica B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia subherkiniensis Lange-Bertalot, 2011
Species Eunotia sudeticiformis Kociolek, You, Stepanek, Lowe & Wang, 2016
Species Eunotia superbidens H.Lange-Bertalot, 2011
Species Eunotia tapuya L.F.Costa, D.C.Bicudo & Ector in Costa et al., 2017
Species Eunotia tauntoniensis F.Hustedt
Species Eunotia telmaiana Burliga & Kociolek
Species Eunotia tenella (Grunow) Hustedt, 1913
Species Eunotia tetraundulata Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia trigona A.Fuhrmann, D.Metzeltin & P.I.Tremarin, 2013
Species Eunotia tupinamba L.F.Costa & D.C.Bicudo in Costa et al., 2017
Species Eunotia uliginosa M.S.Kulikovskiy, H.Lange-Bertalot, A.Witkowski & N.I.Dorofeyuk, 2010
Species Eunotia ursulae L.F.Costa, C.E.Wetzel & Lange-Bertalot in Costa et al., 2017
Species Eunotia ventriosa R.M.Patrick, 1940
Species Eunotia vietnamica Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia vozmedianoi I.Álvarez-Blanco, C.Cejudo-Figueiras & S.Blanco, 2013
Species Eunotia vyvermanii Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018
Species Eunotia wiltschkorum H.Lange-Bertalot, 2011
Species Eunotia zechii S.Krstic, Z.Levkov & A.Pavlov, 2013

Species Eunotia adnata (Brébisson) G.L.Rabenhorst, 1853 represented as Epithemia adnata (Kützing) Brébisson, 1838
Species Eunotia alpestris (Kützing) Rabenhorst, 1853 represented as Epithemia alpestris Kützing, 1844
Species Eunotia alpina (Nägeli) Hustedt, 1913 represented as Synedra alpina var. alpina Naegeli in Kützing, 1849
  » Variety Eunotia alpina var. africana Cholnoky, 1955 (uncertain, unassessed)
  » Variety Eunotia alpina var. hankensis Skvortzov, 2012 (uncertain)
  » Variety Eunotia alpina var. minor Skvortzow, 1938 (uncertain, unassessed)
Species Eunotia arcuata F.Steinecke represented as Synedra arcuata Naegeli in Kutzing, 1849
  » Forma Eunotia arcuata f. excisa (Grunow in Van Heurck) Steinecke, 1916 represented as Eunotia lunaris var. excisa Grunow, 1881
  » Variety Eunotia arcuata var. genuina (Mayer) Magdeburg, 1926 represented as Eunotia lunaris var. genuina (Grunow) Mayer, 1913
  » Forma Eunotia arcuata f. compacta Steinecke, 1916 (uncertain, unassessed)
  » Forma Eunotia arcuata f. excisa Steinecke, 1915 (1916) (uncertain, unassessed)
  » Forma Eunotia arcuata f. excisa (Grunow in Van Heurck) Steinecke, 1916 (uncertain, unassessed)
  » Forma Eunotia arcuata f. parallela Steinecke, 1916 (uncertain, unassessed)
  » Forma Eunotia arcuata f. typica Steinecke, 1916 (uncertain, unassessed)
  » Forma Eunotia arcuata f. ventricosa Steinecke, 1916 (uncertain, unassessed)
  » Variety Eunotia arcuata var. arcuata Steinecke, 1916 (uncertain, unassessed)
  » Variety Eunotia arcuata var. ceratoneis Magdeburg, 1926 (uncertain, unassessed)
  » Variety Eunotia arcuata var. curvata Magdeburg, 1926 (uncertain, unassessed)
Species Eunotia biceps (W. Smith) G.S. West, 1904 represented as Synedra biceps W.Smith, 1853
Species Eunotia bilunaris (Ehrenberg) Schaarschmidt, 1880 represented as Synedra bilunaris var. bilunaris Ehrenberg, 1832
Species Eunotia boryana (Pantocsek) De Toni, 1892 represented as Himantidium boryanum Pantocsek, 1889
Species Eunotia capensis (Cholnoky) Cholnoky, 1964 represented as Eunotia theronii var. capensis Cholnoky, 1959
Species Eunotia clevei (Skvortzow) Skabichevskii, 1977 represented as Eunotia clevei var. baikalensis Skvortzow, 1937
  » Variety Eunotia clevei var. obliquestriata (Qi, Lin & He) Shi, 1991 (uncertain, unassessed)
Species Eunotia commutata (Cleve-Euler in man. A. Berg) Cleve-Euler, 1953 represented as Eunotia praeruptabidens var. commutata Cleve-Euler in manuscript A. Berg, 1939
Species Eunotia compacta Hustedt ex R. Simonsen, 1987 represented as Eunotia exigua var. compacta Hustedt, 1930
Species Eunotia cretae (Ehrenberg) Ehrenberg, 1844 represented as Cocconema cretae Ehrenberg, 1839
Species Eunotia elongata D.Metzeltin & Lange-Bertalot represented as Eunotia formica var. elongata Grunow, 1865
Species Eunotia eruca Ehrenberg, 1844 represented as Amphicampa eruca Ehrenberg, 1854
Species Eunotia eurycephala (Grunow) Nörpel-Schempp & Lange-Bertalot, 1996 represented as Eunotia flexuosa var. eurycephala Grunow, 1881
Species Eunotia excelsa (Krasske) Nörpel in Lange-Bertalot, Kulbs, Lauser, Norpel-Schempp & Willmann, 1996 represented as Eunotia praerupta var. excelsa Krasske, 1938
Species Eunotia exigua (Brébisson ex Kützing) Rabenhorst, 1864 represented as Himantidium exiguum Brébisson ex Kützing, 1849
  » Variety Eunotia exigua var. exigua (Brébisson ex Kützing) Rabenhorst, 1864
  » Forma Eunotia exigua f. minuta (Hilse in Rabenhorst) Mayer, 1918 represented as Eunotia minuta Hilse, 1861
  » Variety Eunotia exigua var. tenella (Grunow) Nörpel & Alles, 1991 represented as Eunotia arcus var. tenella Grunow, 1881
  » Forma Eunotia exigua f. bidens Hust., 1930 accepted as Eunotia exigua var. undulata Magdeburg, 1926 (synonym)
  » Forma Eunotia exigua f. beta A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia exigua f. linearis Krasske, 1932 (uncertain, unassessed)
  » Forma Eunotia exigua f. tenuissima Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia exigua f. ventrosa Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia exigua var. bidens Hustedt, 1930 (uncertain, unassessed)
  » Variety Eunotia exigua var. compacta Hustedt, 1930 (uncertain, unassessed)
  » Variety Eunotia exigua var. exilissima Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia exigua var. genuina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia exigua var. gibba Hustedt, 1938 (uncertain, unassessed)
  » Variety Eunotia exigua var. gracilis (W.Smith) Ant.Mayer (uncertain, unassessed)
  » Variety Eunotia exigua var. gracilis Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia exigua var. incisa (Mayer) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia exigua var. lunata Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia exigua var. minuta (F.W.Hilse) Ant.Mayer (uncertain, unassessed)
  » Variety Eunotia exigua var. nymanniana Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia exigua var. paludosa Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia exigua var. reversa Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia exigua var. tenuissima Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia exigua var. tridentula Østrup, 1910 (uncertain, unassessed)
  » Variety Eunotia exigua var. triundulata Cholnoky, 1955 (uncertain, unassessed)
  » Variety Eunotia exigua var. triundulata Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia exigua var. undulata Magdeburg, 1926 (uncertain, unassessed)
  » Variety Eunotia exigua var. vix diversa Van Heurck, 1881 (uncertain, unassessed)
Species Eunotia exsecta (Cleve-Euler) Nörpel-Schempp & Lange-Bertalot, 1996 represented as Eunotia veneris var. exsecta Cleve-Euler, 1953
Species Eunotia faba (Ehrenberg) Grunow, 1881 represented as Himantidium faba Ehrenberg, 1854
  » Forma Eunotia faba f. soleirolii (W. Smith) Cleve-Euler, 1953 represented as Himantidium soleirolii sense Wm. Smith, 1856
  » Variety Eunotia faba var. obtusa (Grunow in Van Heurck) Cleve-Euler, 1953 represented as Eunotia incisa var. obtusa Grunow in Van Heurck, 1881
  » Forma Eunotia faba f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia faba f. asymetrica Fusey, 1953 (uncertain, unassessed)
  » Forma Eunotia faba f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia faba f. recta Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Variety Eunotia faba var. angusta A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia faba var. brevis Tynni, 1994 (uncertain, unassessed)
  » Variety Eunotia faba var. densestriata Østrup, 1910 (uncertain, unassessed)
  » Variety Eunotia faba var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia faba var. inflata Hirano, 1974 (uncertain, unassessed)
  » Variety Eunotia faba var. intermedia (Krasske in Hustedt) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia faba var. lunata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia faba var. minor Tarnavschi & Jitariu, 1955 (uncertain, unassessed)
  » Variety Eunotia faba var. minor Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia faba var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Eunotia faba var. parvula Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia faba var. rhomboidea Foged, 1972 (uncertain, unassessed)
Species Eunotia falcata (Brébisson ex Kützing) A.Berg, 1939 represented as Synedra falcata Brébisson ex Kützing, 1849
  » Forma Eunotia falcata f. alpha A. Berg, 1939 (uncertain, unassessed)
Species Eunotia femoriforme (Patrick) Hustedt, 1949 represented as Desmogonium femoriforme R.M.Patrick, 1940
Species Eunotia fennica (Hustedt) Lange-Bertalot, 2004 represented as Eunotia denticulata var. fennica Hustedt, 1932
Species Eunotia flexuosa (Brébisson ex Kützing) Kützing, 1849 represented as Synedra flexuosa var. flexuosa Brébisson ex Kützing, 1846
  » Variety Eunotia flexuosa var. bicapitata Grunow in Van Heurck, 1881
  » Variety Eunotia flexuosa var. flexuosa Kützing, 1849 represented as Synedra flexuosa var. flexuosa Brébisson ex Kützing, 1849
  » Variety Eunotia flexuosa var. paradoxa (A. Berg) Cleve-Euler, 1953 represented as Eunotia paradoxa A. Berg, 1939
  » Forma Eunotia flexuosa f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia flexuosa f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia flexuosa f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. eurycephala Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. linearis Okuno, 1952 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. nipponica Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. pachycephala Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. rilensis Kawecka, 1976 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. trachytica Pantocsek, 1892 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. transvaalensis Cholnoky, 1955 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. vasconiensis Manguin in Allorge & Manguin, 1941 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. vasconiensis Saveljewa-Dolgova, 1925 (uncertain, unassessed)
  » Variety Eunotia flexuosa var. ventralis Saveljeva-Dolgova, 1925 (uncertain, unassessed)
Species Eunotia fuseyi J.C.Taylor & Cocquyt, 2016 represented as Eunotia pierrefuseyi J.C.Taylor & Cocquyt
Species Eunotia gracilis (Ehrenberg) Rabenhorst, 1864 represented as Himantidium gracile Ehrenberg, 1843
Species Eunotia gracillima (Krasske) M.Nörpel, 1996 represented as Eunotia fallax var. gracillima Krasske, 1929
Species Eunotia groenlandica (Grunow) Norpel-Schempp & Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996 represented as Eunotia paludosa var. groenlandica Grunow in Van Heurck, 1880-1887
Species Eunotia guyanensis (Ehrenberg) De Toni, 1892 represented as Himantidium guianense Ehrenberg, 1843
Species Eunotia hemicyclus (Ehrenberg) Ralfs, 1861 represented as Synedra hemicyclus Ehrenberg, 1840
Species Eunotia hispida (Skvortzov) Reid & Williams, 2001 represented as Eunotia clevei var. hispida Skvortzov, 1937
Species Eunotia inflata (Grunow) Norpel-Schempp & Lange-Bertalot, 1996 represented as Eunotia praerupta f. inflata (Grunow) J.Frenguelli, 1924
Species Eunotia kamerunensis (Gutwinski in Gutwinski & Chmielewski) F.W. Mills, 1934 represented as Cystopleura kamerunensis Gutwinski & Chmielewski, 1906
Species Eunotia lermana (Ehrenberg) M. Peragallo, 1897-1903 represented as Amphicampa lermana Ehrenberg, 1870
Species Eunotia lunaris (Ehrenberg) Grunow, 1882-1885 represented as Synedra lunaris var. lunaris Ehrenberg, 1832
  » Variety Eunotia lunaris var. duolineata Hagelstein, 1939
  » Variety Eunotia lunaris var. pseudofallax Manguin, 1939
  » Forma Eunotia lunaris f. bilunaris (Grunow) Cleve-Euler, 1932 represented as Eunotia lunaris var. bilunaris Mayer, 1918
  » Forma Eunotia lunaris f. cuspidata (Schumann) Frenguelli, 1933 represented as Ceratoneis lunaris var. cuspidata Schumann, 1867
  » Forma Eunotia lunaris f. subarcuata (C.W.Nägeli) J.Frenguelli, 1933 represented as Synedra subarcuata Naegeli ex Kützing, 1849
  » Variety Eunotia lunaris var. alpina (Nägeli ex Kützing) Grunow, 1881 represented as Synedra alpina var. alpina Naegeli in Kützing, 1849
  » Variety Eunotia lunaris var. bilunaris (Ehrenberg) Grunow, 1882-1885 represented as Synedra lunaris var. bilunaris Brun, 1880
  » Variety Eunotia lunaris var. campyla (Hilse in Rabenhorst) Meister, 1912 represented as Synedra campyla Hilse, 1860
  » Variety Eunotia lunaris var. capitata (Grunow) Schonfeldt, 1907 represented as Synedra lunaris var. capitata Grunow, 1862
  » Variety Eunotia lunaris var. excisa Grunow, 1881
  » Variety Eunotia lunaris var. genuina (Grunow) Mayer, 1913 represented as Synedra lunaris var. genuina Grunow, 1862
  » Variety Eunotia lunaris var. sicula (Cleve-Euler) Cleve-Euler, 1953 represented as Eunotia sicula Cleve-Euler, 1934
  » Variety Eunotia lunaris var. subarcuata (Nägeli) Grunow, 1881 represented as Synedra subarcuata Naegeli ex Kützing, 1849
  » Forma Eunotia lunaris f. elegans (E.V.Østrup) Ł.Berg (uncertain, unassessed)
  » Forma Eunotia lunaris f. major Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia lunaris var. attenuata Cleve, 1900 (uncertain, unassessed)
  » Variety Eunotia lunaris var. baicalensis Jasnitzky, 1936 (uncertain, unassessed)
  » Variety Eunotia lunaris var. capitata Grunow (uncertain, unassessed)
  » Variety Eunotia lunaris var. densestriata Manguin in Manguin & Manguin, 1949 (uncertain, unassessed)
  » Variety Eunotia lunaris var. emarginatovalida W. West, 1912 (uncertain, unassessed)
  » Variety Eunotia lunaris var. genuina Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia lunaris var. hustedtii Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Eunotia lunaris var. lanceolata Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia lunaris var. major (Grunow) Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia lunaris var. maxima Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia lunaris var. nipponica Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia lunaris var. perlonga Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia lunaris var. turgidula Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Eunotia lunaris var. undulata Skvortzov, 1976 (uncertain, unassessed)
Species Eunotia major (W.Smith) Rabenhorst, 1864 represented as Himantidium majus var. majus W. Smith, 1856
  » Variety Eunotia major var. scandica A. Cleve Euler, 1953
  » Forma Eunotia major f. bidens (Gregory) Cleve-Euler, 1934 represented as Himantidium bidens var. bidens Ehrenberg, 1843
  » Forma Eunotia major f. bidens (Gregory) Rabenhorst, 1864 represented as Himantidium bidens var. bidens Ehrenberg, 1843
  » Forma Eunotia major f. indica (Grunow) A.Berg, 1939 represented as Eunotia indica Grunow, 1865
  » Forma Eunotia major f. major (W. Smith) Rabenhorst, 1864 represented as Himantidium majus var. majus W. Smith, 1856
  » Forma Eunotia major f. ventricosa (A.Cleve) Cleve-Euler, 1953 represented as Eunotia major var. ventricosa A. Cleve, 1895
  » Variety Eunotia major var. compacta (A. Cleve) A. Cleve Euler, 1953 represented as Eunotia pectinalis var. compacta A.Cleve, 1895
  » Variety Eunotia major var. indica (Grunow) Cleve-Euler, 1953 represented as Eunotia indica Grunow, 1865
  » Variety Eunotia major var. ventralis (Ehrenberg) Tempère & Peragallo, 1889 represented as Eunotia ventralis Ehrenberg, 1843
  » Variety Eunotia major var. bidens Hust., 1924 accepted as Eunotia scandinavica A.Cleve ex Font., 1917 (synonym)
  » Forma Eunotia major f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. compacta A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. constricta Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia major f. curta Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Eunotia major f. deformata Pantocsek, 1913 (uncertain, unassessed)
  » Forma Eunotia major f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. excelsa A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia major f. hybrida Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia major f. minor Cleve & Möller, 1879 (uncertain, unassessed)
  » Forma Eunotia major f. parallela A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. paucistriata Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia major f. plectrum A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia major f. scandica Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia major f. zeta A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia major var. asiatica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Eunotia major var. curta Hustedt, 1909 (uncertain, unassessed)
  » Variety Eunotia major var. curta Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia major var. emarginata Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia major var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Eunotia major var. gigantea Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia major var. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Variety Eunotia major var. inelegans Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia major var. inflata Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia major var. linearis Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia major var. major G. S. West, 1909 (uncertain, unassessed)
  » Variety Eunotia major var. mesodon Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia major var. octoundulata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia major var. semelconstricta Rattray, 1888 (uncertain, unassessed)
  » Variety Eunotia major var. serpentina (uncertain, unassessed)
  » Variety Eunotia major var. sexundulata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia major var. suspecta Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia major var. undulata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia major var. undulata A. Berg in manuscript Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia major var. ventricosa A. Cleve, 1895 (uncertain, unassessed)
Species Eunotia maskellii (Inglis) Chapman, Thompson & Segar, 1957 represented as Himantidium maskellii Inglis, 1881
Species Eunotia maxima (Hustedt) Metzeltin & Lange-Bertalot, 1998 represented as Eunotia didyma var. maxima Hustedt ex Simonsen, 1987
Species Eunotia mexicana (Ehrenberg) M. Peragallo, 1897-1903 represented as Amphicampa mexicana Ehrenberg, 1870
Species Eunotia minima (Heiden & Kolbe) F.W. Mills, 1934 represented as Euodia minima Heiden & Kolbe, 1928
Species Eunotia minor (Kützing) Grunow, 1881 represented as Himantidium minus Kützing, 1844
  » Variety Eunotia minor var. impressa Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia minor var. leptocephala Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
Species Eunotia mucophila (Lange-Bertalot & Nörpel Schempp) Metzeltin, Lange-Bertalot & Garcia-Rodrigu represented as Eunotia bilunaris var. mucophila Lange-Bertalot, M.Nörpel & E.Alles, 1991
Species Eunotia nipponica (Skvortzow) Skvortzow & Noda, 1971 represented as Eunotia pectinalis var. nipponica Skvortzow, 1936
Species Eunotia papilio (Ehrenberg) Grunow, 1868 represented as Himantidium papilo Ehrenberg, 1843
Species Eunotia perlonga (Frenguelli) Cleve-Euler, 1948 represented as Eunotia lunaris var. perlonga Frenguelli, 1933
Species Eunotia perminuta (Grunow) R.M.Patrick, 1958 represented as Eunotia tridentula var. perminuta Grunow, 1881
Species Eunotia pumilio (Ehrenberg) M. Peragallo, 1897-1903 represented as Amphicampa pumilio Ehrenberg, 1870
Species Eunotia rabenhorstiana (Grunow) Hustedt, 1949 represented as Desmogonium rabenhorstianum Grunow, 1865
Species Eunotia recurvata (Hustedt in Schmidt et al.) Hustedt, 1938 represented as Eunotia didyma var. recurvata Hustedt in Schmidt et al., 1933
Species Eunotia regiomontana (Schumann) De Toni, 1892 represented as Himantidium regiomontanum Schumann, 1862
Species Eunotia robusta Ralfs, 1861 represented as Eunotia robusta f. robusta Ralfs in Pritchard, 1861
  » Forma Eunotia robusta f. tetraodon (Ehrenberg) Ralfs in Pritchard, 1861 represented as Eunotia tetraodon Ehrenberg, 1838
  » Variety Eunotia robusta var. decaodon (Ehrenberg) F.Hustedt, 1911 represented as Eunotia decaodon Ehrenberg, 1840
  » Variety Eunotia robusta var. diadema (Ehrenberg) Carruthers, 1864 represented as Eunotia diadema Ehrenberg, 1837
  » Variety Eunotia robusta var. dodecaodon (Ehrenberg) Ralfs, 1861 represented as Eunotia dodecaodon Ehrenberg, 1854
  » Variety Eunotia robusta var. enneodon (Ehrenberg) Hustedt in Schmidt, 1911 represented as Eunotia enneodon Ehrenberg, 1840
  » Variety Eunotia robusta var. hendecaodon (Ehrenberg) Grunow in Van Heurck, 1881 represented as Eunotia hendecaodon Ehrenberg, 1854
  » Variety Eunotia robusta var. heptodon (Ehrenberg) F.Hustedt, 1911 represented as Eunotia heptodon Ehrenberg, 1840
  » Variety Eunotia robusta var. icosodon (Ehrenberg) C.S.Boyer, 1926 represented as Eunotia icosodon Ehrenberg, 1840
  » Variety Eunotia robusta var. octodon (Ehrenberg) Hustedt, 1911 represented as Eunotia octodon Ehrenberg, 1840
  » Variety Eunotia robusta var. pentodon (Ehrenberg) Ralfs, 1861 represented as Eunotia pentodon Ehrenberg, 1837
  » Variety Eunotia robusta var. polyodon (Ehrenberg) Ralfs, 1861 represented as Eunotia polyodon Ehrenberg, 1845
  » Variety Eunotia robusta var. prionotis (Ehrenberg) F.Hustedt, 1911 represented as Eunotia prionotus Ehrenberg, 1840
  » Variety Eunotia robusta var. prionotus (Ehrenberg) Ralfs, 1861 represented as Eunotia prionotus Ehrenberg, 1840
  » Variety Eunotia robusta var. serra (Ehrenberg) Meister, 1912 represented as Eunotia serra Ehrenberg, 1837
  » Variety Eunotia robusta var. serrulata (Ehrenberg) Ralfs, 1861 represented as Eunotia serrulata Ehrenberg, 1840
  » Variety Eunotia robusta var. tetraodon (Ehrenberg) Carruthers, 1864 represented as Eunotia tetraodon Ehrenberg, 1838
  » Variety Eunotia robusta var. triodon (Ehrenberg) W.Carruthers, 1864 represented as Eunotia triodon Ehrenberg, 1837
  » Variety Eunotia robusta var. tetraodon (Ehrenberg) Ralfs in Pritchard, 1861 accepted as Eunotia serra var. tetraodon (Ehrenberg) Nörpel (synonym)
  » Forma Eunotia robusta f. abrupta Hustedt, 1914 (uncertain, unassessed)
  » Forma Eunotia robusta f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia robusta f. quaternarius A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia robusta f. robusta Ralfs in Pritchard, 1861 (uncertain, unassessed)
  » Variety Eunotia robusta var. abrupta (Hustedt) (uncertain, unassessed)
  » Variety Eunotia robusta var. bergii Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia robusta var. bidens Krasske, 1925 (uncertain, unassessed)
  » Variety Eunotia robusta var. bigibba Østrup, 1902 (uncertain, unassessed)
  » Variety Eunotia robusta var. consimilis Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia robusta var. diodon Krasske, 1925 (uncertain, unassessed)
  » Variety Eunotia robusta var. diodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard, 1861 (uncertain, unassessed)
  » Variety Eunotia robusta var. grandis Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia robusta var. heptaodon (Ehrenberg; Ehrenberg) Ralfs in Pritchard, 1861 (uncertain, unassessed)
  » Variety Eunotia robusta var. hexaodon Tempère & Peragallo, 1912 (uncertain, unassessed)
  » Variety Eunotia robusta var. papilio (Ehrenberg) Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia robusta var. quindenaria (Ehrenberg) (uncertain, unassessed)
  » Variety Eunotia robusta var. scalaris (Ehrenberg) C.S.Boyer, 1926 (uncertain, unassessed)
  » Variety Eunotia robusta var. subrobusta Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
Species Eunotia satelles (Nörpel-Schempp & Lange-Bertalot) Nörpel-Schempp & Lange-Bertalot, 1996 represented as Eunotia rhynchocephala var. satelles Norpel & Lange-Bertalot, 1993
Species Eunotia saxonica (Kützing) G.L.Rabenhorst, 1853 represented as Epithemia saxonica Kützing, 1844
Species Eunotia sinuata (Pero) Pero, 1894 represented as Eunotia arcus var. sinuata Pero, 1893
Species Eunotia soleirolii (Kützing) Rabenhorst, 1864 represented as Himantidium soleirolii Kützing, 1844
Species Eunotia sorex (Kützing) G.L.Rabenhorst, 1853 represented as Epithemia sorex Kützing, 1844
Species Eunotia striata (Wigand) Rabenhorst, 1864 represented as Himantidium striatum Wigand, 1860
Species Eunotia striata (Grove & Sturt) Grunow, 1887 represented as Euodia striata Grove & Sturt, 1887
Species Eunotia subarcuata (C.W.Nägeli) Pantocsek, 1902 represented as Synedra subarcuata Naegeli ex Kützing, 1849
Species Eunotia sumatrana (Hustedt) A. Berg, 1939 represented as Eunotia formica var. sumatrana Hustedt, 1935
Species Eunotia triconfusa S.L.VanLandingham represented as Eunotia attenuata Patrick, 1940
Species Eunotia veneris (Kützing) De Toni, 1892 represented as Himantidium veneris Kützing, 1844
Species Eunotia veneris (Kützing) A.Berg, 1939 represented as Himantidium veneris Kützing, 1844
  » Variety Eunotia veneris var. obtusiuscula (Grunow) van Heurck, 1896 represented as Eunotia incisa var. obtusiuscula Grunow, 1881
  » Forma Eunotia veneris f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia veneris f. asymmetrica Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia veneris f. asymmetrica Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia veneris f. minor Korotkevic, 1957 (uncertain, unassessed)
  » Forma Eunotia veneris f. minor Korotkevicz, 1959 (uncertain, unassessed)
  » Forma Eunotia veneris f. minor Korotkevich, 1960 (uncertain, unassessed)
  » Variety Eunotia veneris var. baikalensis (Skvortzov & Meyer) (uncertain)
  » Variety Eunotia veneris var. bidens Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Variety Eunotia veneris var. crassa Hirano, 1967 (uncertain, unassessed)
  » Variety Eunotia veneris var. distans Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia veneris var. exilis Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia veneris var. exsecta Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia veneris var. incisa (Gregory ex Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia veneris var. karelica Mölder, 1951 (uncertain, unassessed)
  » Variety Eunotia veneris var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Eunotia veneris var. obtusa (Grunow) E.V.Østrup (uncertain, unassessed)
  » Variety Eunotia veneris var. rhynchocephala Manguin, 1952 (uncertain, unassessed)
  » Variety Eunotia veneris var. subparallela Manguin, 1952 (uncertain, unassessed)
  » Variety Eunotia veneris var. tenuirostris Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia veneris var. undulata Fusey, 1951 (uncertain, unassessed)
Species Eunotia ventricosa (Kützing) G.L.Rabenhorst, 1853 represented as Epithemia ventricosa Kützing, 1844
  » Variety Eunotia ventricosa var. elongata Grunow, 1865 (uncertain, unassessed)
Species Eunotia wardii (Patrick) Metzeltin & Lange-Bertalot, 2007 represented as Eunotia obesa var. wardii R.M.Patrick, 1958
Species Eunotia zygodon Ehrenberg, 1843
  » Forma Eunotia zygodon f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia zygodon f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia zygodon f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia zygodon f. genuina Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia zygodon f. inflata Manguin in Bourrelly & Manguin, 1949 (uncertain, unassessed)
  » Variety Eunotia zygodon var. arcualissima Maillard, 1978 (uncertain, unassessed)
  » Variety Eunotia zygodon var. compacta Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia zygodon var. curta Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia zygodon var. depressa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia zygodon var. elongata Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia zygodon var. emarginata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia zygodon var. gracilis Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia zygodon var. lata Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia zygodon var. major Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia zygodon var. maxima Frenguelli, 1933 (uncertain, unassessed)

Species Eunotia angustior H.Lange-Bertalot & N.Tagliaventi, 2011 accepted as Eunotia angusta (Grunow) Å.Berg, 1939
Species Eunotia frigida Van de Vijver, de Haan & Lange-Bertalot, 2014 accepted as Eunotia australofrigida B.Van de Vijver, M.de Haan & H.Lange-Bertalot, 2014
Species Eunotia maior (Smith) Rabenhorst accepted as Eunotia major (W.Smith) Rabenhorst, 1864
  » Variety Eunotia maior var. genuina Mayer, 1918 (uncertain, unassessed)
Species Eunotia paludosa Grunow, 1862 accepted as Eunotia exigua (Brébisson ex Kützing) Rabenhorst, 1864 (synonym)
  » Variety Eunotia paludosa var. trinacria (Krasske) Nörpel & Alles, 1991 represented as Eunotia trinacria Krasske, 1929
  » Forma Eunotia paludosa f. incisa Mayer, 1917 (uncertain, unassessed)
  » Forma Eunotia paludosa f. paludosa Grunow, 1862 (uncertain, unassessed)
  » Forma Eunotia paludosa f. turfacea Steinecke, 1916 (uncertain, unassessed)
  » Variety Eunotia paludosa var. arculus Grunow in Van Heurck, 1884 (uncertain, unassessed)
  » Variety Eunotia paludosa var. capitata Magdeburg, 1926 (uncertain, unassessed)
  » Variety Eunotia paludosa var. ceratoneis Magdeburg, 1926 (uncertain, unassessed)
  » Variety Eunotia paludosa var. genuina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia paludosa var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia paludosa var. groenlandica Grunow in Van Heurck, 1880-1887 (uncertain, unassessed)
  » Variety Eunotia paludosa var. lunata Mayer, 1917 (uncertain, unassessed)
  » Variety Eunotia paludosa var. minor Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia paludosa var. pumila Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Eunotia paludosa var. turfacea F.Steinecke (uncertain, unassessed)
Species Eunotia praerupta-monos (Ehrenberg) Å.Berg, 1939 accepted as Eunotia inflata (Grunow) Norpel-Schempp & Lange-Bertalot, 1996 (synonym)
Species Eunotia rabenhorstii Cleve & Grunow accepted as Eunotia praerupta var. excelsa Krasske, 1938 (synonym)
  » Variety Eunotia rabenhorstii var. irregularis Cholnoky, 1954 (uncertain, unassessed)
  » Variety Eunotia rabenhorstii var. maxima Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia rabenhorstii var. monodon Cleve & Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia rabenhorstii var. rabenhorstii Cleve & Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia rabenhorstii var. triodon Grunow (uncertain, unassessed)
Species Eunotia westermanni (Ehrenberg) Ehrenberg, 1838 accepted as Epithemia turgida var. westermannii (Ehrenberg) Grunow, 1862

Species Eunotia abrupta Ehrenberg, 1853 (uncertain, unassessed)
Species Eunotia acicularis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia acmocephala Fusey, 1953 (uncertain, unassessed)
  » Forma Eunotia acmocephala f. impressa Fusey, 1953 (uncertain, unassessed)
Species Eunotia actinelloides Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia actuariola Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia acus Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia acuticrenulata D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia acutinasuta Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia aduncus M.H.Hohn & J.Hellerman, 1963 (uncertain, unassessed)
Species Eunotia advena (Fusey) VanLandingham, 1969 (uncertain, unassessed)
Species Eunotia aenigma (Abdul-Majeed) VanLandingham, 1969 (uncertain, unassessed)
Species Eunotia aequalis Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia alpina Grunow in Cleve & Möller, 1878 (uncertain, unassessed)
  » Forma Eunotia alpina f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia alpina var. densestriata Tynni, 1994 (uncertain, unassessed)
  » Variety Eunotia alpina var. densior A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia alpina var. pumila Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia alpina var. schulzii Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia alpina var. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia alpina Kützing, 1844 (uncertain, unassessed)
Species Eunotia alstonii Skvortzow, 1930 (uncertain, unassessed)
Species Eunotia alta Ehrenberg (uncertain, unassessed)
Species Eunotia ambigua Carter, 1966 (uncertain, unassessed)
Species Eunotia ambigua Gandhi, 1966 (uncertain, unassessed)
Species Eunotia americana Kain & Schultze, 1889 (uncertain, unassessed)
  » Variety Eunotia americana var. asiatica Voigt, 1969 (uncertain, unassessed)
Species Eunotia amoyensis (Skvortzov) (uncertain)
Species Eunotia amphidicranon Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia amphilepta Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia amphioxys Ehrenberg, 1843 (uncertain, unassessed)
  » Variety Eunotia amphioxys var. ampla Ehrenberg, 1854 (uncertain, unassessed)
  » Variety Eunotia amphioxys var. hybrida Ehrenberg (uncertain, unassessed)
  » Variety Eunotia amphioxys var. prostrata Ehrenberg, 1854 (uncertain, unassessed)
  » Variety Eunotia amphioxys var. rostrata Ehrenberg, 1854 (uncertain, unassessed)
  » Variety Eunotia amphioxys var. vulgaris Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia amphirhamphus Ehrenberg, 1862 (uncertain, unassessed)
Species Eunotia anadariensis M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkowski, 2010 (uncertain, unassessed)
Species Eunotia anamargaritae Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia andina Frenguelli, 1942 (uncertain, unassessed)
  » Variety Eunotia andina var. genuina Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Eunotia andina var. intermedia Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Eunotia andina var. minor Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia andinofrequens H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000 (uncertain, unassessed)
Species Eunotia angulata (Perty) Rabenhorst, 1853 (uncertain, unassessed)
Species Eunotia angusta (Grunow) Å.Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia angusta var. densestriata (Fontell) A. Berg ex Cleve-Euler, 1939 represented as Eunotia parallela var. densestriata Font., 1917
  » Forma Eunotia angusta f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. bilunaris (Ehrenberg) Å.Berg (uncertain, unassessed)
  » Forma Eunotia angusta f. bilunaris (Grunow in Van Heurck) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. bilunaris (Grunow) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. crenulata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. crenulata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. densior Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. eta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. iota A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. perlonga Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. perlonga Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia angusta f. theta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia angusta f. zeta A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia angusta var. fontellii Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia angusta var. hungarica Halasz, 1941 (uncertain, unassessed)
  » Variety Eunotia angusta var. robusta (Fontell) A. Berg, 1953 (uncertain, unassessed)
  » Variety Eunotia angusta var. tenuis A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia angusta var. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia angusticuspidata D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia anhuensis J. Yang, 1995 (uncertain, unassessed)
Species Eunotia anisodon L.W. Bailey, 1861 (uncertain, unassessed)
Species Eunotia ankazondranona Manguin, 1949 (uncertain, unassessed)
  » Forma Eunotia ankazondranona f. faba Manguin, 1949 (uncertain, unassessed)
  » Variety Eunotia ankazondranona var. hieroglyphica Manguin in Lenoble, 1948 (uncertain, unassessed)
  » Variety Eunotia ankazondranona var. hieroglyphica Manguin, 1949 (uncertain, unassessed)
Species Eunotia antiqua A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia antiqua f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia antiqua f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia antiqua f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia antiqua var. bergii Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia antiqua var. clipeata A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia antiqua var. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia apiculata Ehrenberg in Pritchard, 1861 (uncertain, unassessed)
Species Eunotia aralensis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia araucaniae Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia arcadia Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia arcofallax H. Lange-Bertalot in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia arctica Hustedt, 1937 (uncertain, unassessed)
  » Variety Eunotia arctica var. simplex Hustedt, 1936 (uncertain, unassessed)
Species Eunotia arcuatissima Lange-Bertalot & A.Steindorf (uncertain, unassessed)
Species Eunotia arcubus Nörpel & Lange-Bertalot, 1993 (uncertain, unassessed)
Species Eunotia arculus (Grunow) Lange-Bertalot & Nörpel (uncertain, unassessed)
Species Eunotia arcuoides Foged, 1977 (uncertain, unassessed)
Species Eunotia arcus Ehrenberg, 1837 (uncertain, unassessed)
  » Variety Eunotia arcus var. arcus Ehrenberg, 1837
  » Forma Eunotia arcus f. bidens (Grunow) Hustedt, 1957 represented as Eunotia arcus var. bidens Grunow, 1881
  » Forma Eunotia arcus f. curta (Grunow) Dippel, 1905 represented as Eunotia arcus var. curtum Grunow, 1862
  » Forma Eunotia arcus f. plicata (Brun & Heribaud in Heribaud) Cleve-Euler, 1953 represented as Eunotia arcus var. plicata Brun & Héribaud-Joseph, 1893
  » Variety Eunotia arcus var. attenuatum (Rabenhorst) Rabenhorst, 1864 represented as Himantidium attenuatum Rabenhorst, 1853
  » Variety Eunotia arcus var. bidens (Ehrenberg) Kirchner, 1878 represented as Himantidium bidens var. bidens Ehrenberg, 1843
  » Variety Eunotia arcus var. fallax (Hustedt) Cleve-Euler, 1953 represented as Eunotia arcus var. fallax Hustedt, 1930
  » Variety Eunotia arcus var. major (W.Smith) Brun ex Petit, 1888, v.18(212) represented as Himantidium majus var. majus W. Smith, 1856
  » Variety Eunotia arcus var. plicata Brun & Héribaud-Joseph, 1893
  » Variety Eunotia arcus var. trigranulata (Schumann) Gutwinski represented as Eunotia trigranulata Schumann, 1867
  » Variety Eunotia arcus var. uncinata (Ehrenberg) Grunow, 1881 represented as Eunotia uncinata Ehrenberg, 1843
  » Forma Eunotia arcus f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia arcus f. concinna A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia arcus f. curta Brun, 1901 (uncertain, unassessed)
  » Forma Eunotia arcus f. parva Cleve & Möller, 1879 (uncertain, unassessed)
  » Forma Eunotia arcus f. sphaerocephala A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia arcus var. bidens Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia arcus var. bifrons Tempère & Peragallo, 1909 (uncertain, unassessed)
  » Variety Eunotia arcus var. biundulata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia arcus var. crassistriata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia arcus var. curtum Grunow, 1862 (uncertain, unassessed)
  » Variety Eunotia arcus var. curvata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia arcus var. elongata Fontell, 1917 (uncertain, unassessed)
  » Variety Eunotia arcus var. fallax Hustedt, 1930 (uncertain, unassessed)
  » Variety Eunotia arcus var. genuflexa A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia arcus var. genuina Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia arcus var. genuina Kirchner, 1878 (uncertain, unassessed)
  » Variety Eunotia arcus var. groenlandica Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia arcus var. hinganica Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia arcus var. hybrida Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia arcus var. incisa Kinnord (uncertain, unassessed)
  » Variety Eunotia arcus var. inflata Saweljewa-Dolgowa, 1925 (uncertain, unassessed)
  » Variety Eunotia arcus var. kricsfalusiana Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia arcus var. lusus (Brun & Heribaud) Mayer, 1919 (uncertain, unassessed)
  » Variety Eunotia arcus var. minor Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia arcus var. minutissima Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia arcus var. oxycephala Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia arcus var. plana Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia arcus var. recta Hirano, 1967 (uncertain, unassessed)
  » Variety Eunotia arcus var. sinuata Pero, 1893 (uncertain, unassessed)
  » Variety Eunotia arcus var. sphaerocephala (A. Berg) A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia arcus var. subalpina Fontell, 1917 (uncertain, unassessed)
  » Variety Eunotia arcus var. tenella Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia arcus var. triundulata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia arcus var. undulata Skvortzov, 2012 (uncertain)
Species Eunotia arcus W. Smith, 1853 (uncertain, unassessed)
Species Eunotia argus Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia ariengae L.C.Torgan & A.L.Burliga, 2007 (uncertain, unassessed)
Species Eunotia arverna Héribaud-Joseph, 1908 † (uncertain, unassessed)
Species Eunotia asiatica Skvortzow, 1938 (uncertain, unassessed)
  » Forma Eunotia asiatica f. suifunensis Moiseeva, 1960 (uncertain, unassessed)
  » Variety Eunotia asiatica var. acuta (Skvortzov) (uncertain)
  » Variety Eunotia asiatica var. interrupta Skvortzow, 1938 (uncertain, unassessed)
Species Eunotia asterionelloides Hustedt, 1952 (uncertain, unassessed)
Species Eunotia astricleveae Berg in Cleve-Euler, 1948 (uncertain, unassessed)
  » Forma Eunotia astricleveae f. ventricosa Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia astridae Fontell, 1917 (uncertain, unassessed)
  » Variety Eunotia astridae var. dentata Fontell, 1917 (uncertain, unassessed)
Species Eunotia asymmetrica Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia attenuata (Cleve) Cleve, 1900 (uncertain, unassessed)
Species Eunotia attenuata Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia attenuata f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia attenuata var. anguicula A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia attenuata var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia attenuata var. tokiensis Cleve-Euler in man. A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia attenuata var. tokiensis (Cleve-Euler ex Berg) Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia attenuata Patrick, 1940 (uncertain, Later homonym)
Species Eunotia attenuata E.E.Manguin in Allorge & Manguin, 1941 (uncertain, Later homonym)
Species Eunotia auriculata Grunow, 1881 (uncertain, unassessed)
Species Eunotia australis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia australominor Gerd Moser (uncertain, unassessed)
Species Eunotia bactriana Ehrenberg, 1854 (uncertain, unassessed)
  » Forma Eunotia bactriana f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia bactriana f. auriculoides A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia bactriana f. bisinuosa Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia bactriana f. geniculata A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia bactriana var. auriculoides (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia bactriana var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia bactriana var. minor Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia baculus Hustedt, 1965 (uncertain, unassessed)
Species Eunotia baicalensis Skvortzov, 1937 (uncertain, unassessed)
Species Eunotia ballinaensis Foged, 1978 (uncertain, unassessed)
Species Eunotia batavica A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia batavica f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia batavica f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia batavica f. gamma Å. Berg, 1939 (uncertain, unassessed)
Species Eunotia beatorum Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia belgica Van de Vijver, Lange-Bertalot & Compere (uncertain, unassessed)
Species Eunotia biareofera Kobayashi, 1968 (uncertain, unassessed)
  » Forma Eunotia biareofera f. linearis Kobayasi, 1975 (uncertain, unassessed)
Species Eunotia bicapitata Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia bicapitata var. koreana Skvortzow, 1929 (uncertain, unassessed)
Species Eunotia biceps Ehrenberg, 1843 (uncertain, unassessed)
  » Variety Eunotia biceps var. genuina Mayer, 1918 (uncertain, unassessed)
Species Eunotia biceps Kützing, 1849 (uncertain, unassessed)
Species Eunotia bicornigera Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia bicornis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia bidens Ehrenberg, 1843 (uncertain, unassessed)
  » Variety Eunotia bidens var. dybowskyi Gutwinski (uncertain, unassessed)
Species Eunotia bidens Dalla Torre & Sarnthein, 1901 (uncertain, unassessed)
Species Eunotia bidentula Schumann, 1867 (uncertain, unassessed)
Species Eunotia bidentula W.Smith, 1856 (uncertain, unassessed)
Species Eunotia bidentuloides Foged, 1977 (uncertain, unassessed)
Species Eunotia bigibba Kützing, 1849 (uncertain, unassessed)
  » Forma Eunotia bigibba f. elongata Hustedt, 1943 (uncertain, unassessed)
  » Variety Eunotia bigibba var. bigibba Gregory, 1854 (uncertain, unassessed)
  » Variety Eunotia bigibba var. herkiniensis Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia bigibba var. pumila Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia bigibba var. rupestris Skvortzow, 1938 (uncertain, unassessed)
  » Variety Eunotia bigibba var. subcapitata Skvortzov, 2012 (uncertain)
Species Eunotia bilii Lowe & Kociolek, 1984 (uncertain, unassessed)
Species Eunotia bioctonaria Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia biseriata Hustedt, 1952 (uncertain, unassessed)
Species Eunotia biseriatoides Kobayasi, Ando & Nagumo, 1981 (uncertain, unassessed)
Species Eunotia bisulcata Hustedt, 1952 (uncertain, unassessed)
Species Eunotia bonsaensis Foged, 1966 (uncertain, unassessed)
Species Eunotia borealis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia boreoalpina Lange-Bertalot & Nörpel-Schempp, 1998 (uncertain, unassessed)
Species Eunotia boreotenuis Norpel-Schempp & Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996 (uncertain, unassessed)
Species Eunotia botellus Gerd Moser (uncertain, unassessed)
Species Eunotia botuliformis F.Wild, Nörpel & Lange-Bertalot, 1993 (uncertain, unassessed)
Species Eunotia botuliformis Wang, 1998 (uncertain, unassessed)
Species Eunotia braendlei H. Lange-Bertalot & M. Werum in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia brasiliensis Zimmermann, 1918 (uncertain, unassessed)
Species Eunotia braunii Hustedt, 1952 (uncertain, unassessed)
Species Eunotia brevicornis Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia brevis Patrick, 1940 (uncertain, unassessed)
Species Eunotia brinkmannii Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia buhriana D.Metzeltin & H-Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia burkartii (Ehrenberg) M. Peragallo, 1897-1903 (uncertain, unassessed)
Species Eunotia caecigena A. Berg, 1939 (uncertain, unassessed)
Species Eunotia caelata Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia callosa Patrick, 1940 (uncertain, unassessed)
Species Eunotia camburnii D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia cameliopsis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia camelus Ehrenberg, 1839 (uncertain, unassessed)
  » Variety Eunotia camelus var. dentata (A. Berg) Gandhi, 1957 represented as Eunotia camelus Ehrenberg, 1839
  » Variety Eunotia camelus var. gibbosa Gandhi, 1957 represented as Eunotia indosinica Glushchenko & Kulikovskiy, 2017 (Replaced synonym)
  » Variety Eunotia camelus var. karveerensis Gandhi, 1957 represented as Eunotia karveerensis (Gandhi) Glushchenko & Kulikovskiy, 2017 (new combination, new status)
  » Variety Eunotia camelus var. ventricosa Gandhi, 1957 represented as Eunotia indosinica Glushchenko & Kulikovskiy, 2017
  » Forma Eunotia camelus f. dentata Å. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia camelus f. major Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia camelus f. major Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia camelus f. minor Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia camelus f. minor Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia camelus var. arcuata Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia camelus var. denticulata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia camelus var. didymodon Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia camelus var. didymodon Gutwinski, 1902 (uncertain, unassessed)
  » Variety Eunotia camelus var. genuina Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia camelus var. juga Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia camelus var. maharashtrensis Sarode & Kamat, 1984 (uncertain, unassessed)
  » Variety Eunotia camelus var. sellula (A. Berg) H.P. Gandhi, 1957 (uncertain, unassessed)
  » Variety Eunotia camelus var. undulata Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia camelus Greville, 1855 (uncertain, unassessed)
Species Eunotia camelus Schumann, 1867 (uncertain, unassessed)
Species Eunotia cancellata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia cancellata var. esseda A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia cancellata var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia cancellata var. latior A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia cancellata var. mutabilis A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia cantica Carter & Denny, 1992 (uncertain, unassessed)
Species Eunotia capitellata Manguin, 1964 (uncertain, unassessed)
Species Eunotia capitellata Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia caribica D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia carinata Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia carolina R.M.Patrick, 1958 (uncertain, unassessed)
Species Eunotia cassiae H.G.Barber, 1962 (uncertain, unassessed)
Species Eunotia catillifera Morrow in Morrow, Deason & Clayton, 1981 (uncertain, unassessed)
Species Eunotia cavernosa H. Lange-Bertalot & M. Werum in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia cemelin C. Johnson ex W. Smith Collection (uncertain, unassessed)
Species Eunotia ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Eunotia ceylonica var. bigibba Skvortzow, 1930 (uncertain, unassessed)
Species Eunotia charlesii D-Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia charliereimeri M.B.Edlund & L.A.Brant, 2010 (uncertain, unassessed)
Species Eunotia chasei Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia chelonia Norpel-Schempp, Lange-Bertalot & Metzeltin in Lange-Bertalot & Metzeltin, 1996 (uncertain, unassessed)
Species Eunotia chigara N.Woodhead & R.D.Tweed, 1958 (uncertain, unassessed)
Species Eunotia chilensis Hustedt in Schmidt, 1913 (uncertain, unassessed)
Species Eunotia cholnokyi Gandhi, 1966 (uncertain, unassessed)
  » Variety Eunotia cholnokyi var. ventricosa Gandhi, 1966 (uncertain, unassessed)
Species Eunotia cingulata Ehrenberg (uncertain, unassessed)
Species Eunotia circumborealis Lange-Bertalot & Norpel, 1993 (uncertain, unassessed)
Species Eunotia cistula Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia clavata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia clavata Manguin, 1949 (uncertain, unassessed)
Species Eunotia claviceps Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia clevei Grunow, 1891 † (uncertain, unassessed)
  » Variety Eunotia clevei var. aculeata Moiseeva, 1971 (uncertain, unassessed)
  » Variety Eunotia clevei var. baikalensis Skvortzow, 1937 (uncertain, unassessed)
  » Variety Eunotia clevei var. hispida Skvortzov, 1937 (uncertain, unassessed)
  » Variety Eunotia clevei var. sinica Qi, Lin & He in Qi, Lin, Zhang & He, 1986 (uncertain, unassessed)
  » Variety Eunotia clevei var. sinica Skvortzow, 1930 (uncertain, unassessed)
Species Eunotia climacidium Grunow, 1882 (uncertain, unassessed)
Species Eunotia coccinea Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia cocconema Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia cocquytiae B.van de Vijver, 2008 (uncertain, unassessed)
Species Eunotia collinsii Kalinsky, 1984 (uncertain, unassessed)
Species Eunotia columbi Ehrenberg ex Ralfs in Pritchard, 1861 (uncertain, unassessed)
Species Eunotia columbica Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia comica D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia compressa (uncertain, unassessed)
  » Variety Eunotia compressa var. angusta Tempère & Peragallo, 1908 (uncertain, unassessed)
Species Eunotia compta Ehrenberg (uncertain, unassessed)
Species Eunotia comta Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia conversa Hustedt, 1952 (uncertain, unassessed)
Species Eunotia convexa Hustedt, 1952 (uncertain, unassessed)
  » Forma Eunotia convexa f. impressa Hustedt, 1952 (uncertain, unassessed)
Species Eunotia copiosa Hustedt, 1952 (uncertain, unassessed)
Species Eunotia cordillera M.H.Hohn & J.Hellerman, 1963 (uncertain, unassessed)
Species Eunotia coringii Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia cornuta Ehrenberg, 1870 (uncertain, unassessed)
Species Eunotia corona Rabenhorst, 1853 (uncertain, unassessed)
Species Eunotia correntina Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia costalunga Brun, 1895 (uncertain, unassessed)
Species Eunotia costaricana H. Lange-Bertalot & U. Wydrzycka in Wydrzycka & Lange-Bertalot, 2001 (uncertain, unassessed)
Species Eunotia costata Østrup, 1902 (uncertain, unassessed)
Species Eunotia crassa Pantocsek & Greguss, 1913 (uncertain, unassessed)
Species Eunotia crassispinata Gerd Moser (uncertain, unassessed)
Species Eunotia crassula Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia crassuliopsis H. Lange-Bertalot & D. Metzeltin, 2009 (uncertain, unassessed)
Species Eunotia crenulata Brebisson ex W. Smith Collection (uncertain, unassessed)
Species Eunotia crispula G.S. West, 1909 (uncertain, unassessed)
Species Eunotia cristagallii Cleve, 1891 (uncertain, unassessed)
  » Forma Eunotia cristagallii f. clevei Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia cristagallii f. levis Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia croatana P.A.Siver, P.B.Hamilton & E.A.Morales, 2006 (uncertain, unassessed)
Species Eunotia crocodilus Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia cuneiformis E.Manguin ex G.Moser, Lange-Bertalot & D.Metzeltin, 1998 (uncertain, unassessed)
Species Eunotia curta Cleve in Cleve & Moller, 1878 (uncertain, unassessed)
Species Eunotia curtagrunowii Nörpel-Schempp & Lange-Bertalot, 1996 (uncertain, unassessed)
Species Eunotia curtiraphe D.Metzeltin & H-Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia curva Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia curvata (Kützing) Lagerstedt, 1884 (uncertain, unassessed)
  » Variety Eunotia curvata var. curvata (Kützing) Lagerst., 1884
  » Forma Eunotia curvata f. densestriata (Manguin) Compère, 1975 represented as Eunotia lunaris var. densestriata Manguin in Manguin & Manguin, 1949
  » Variety Eunotia curvata var. bilunaris (Ehrenberg) Woodhead & Tweed, 1954 represented as Synedra bilunaris var. bilunaris Ehrenberg, 1832
  » Variety Eunotia curvata var. capitata (Grunow) R.M.Patrick, 1966 represented as Synedra lunaris var. capitata Grunow, 1862
  » Variety Eunotia curvata var. hustedtii (Cleve-Euler) Woodhead & Tweed, 1954 represented as Eunotia lunaris var. hustedtii Cleve-Euler, 1932
  » Variety Eunotia curvata var. intermedia (Cleve-Euler) Denys, 1985 represented as Eunotia lunaris var. intermedia Cleve-Euler, 1953
  » Variety Eunotia curvata var. linearis (Okuno) H.Kobay., Ando & Nagumo, 1981 represented as Eunotia flexuosa var. linearis Okuno, 1952
  » Variety Eunotia curvata var. maxima (Meister) Woodhead & Tweed, 1960 represented as Eunotia lunaris var. maxima Meister, 1912
  » Variety Eunotia curvata var. sicula (A.Cleve) R.Ross, 1981 represented as Eunotia sicula Cleve-Euler, 1934
  » Forma Eunotia curvata f. bergii Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Forma Eunotia curvata f. excisa (Grunow) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Forma Eunotia curvata f. major (Grunow) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Variety Eunotia curvata var. campyla (Hilse in Rabenhorst) Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Variety Eunotia curvata var. falcata (Kuetzing & Brebisson) Woodhead & Tweed, 1958 (uncertain, unassessed)
  » Variety Eunotia curvata var. subarcuata (Naegeli in Kutzing) Woodhead & Tweed, 1954 (uncertain, unassessed)
Species Eunotia curvirostra A. Berg (uncertain, unassessed)
Species Eunotia curvula Hustedt, 1952 (uncertain, unassessed)
Species Eunotia cygnus Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia daisetsuensis Hirano & Iwaki, 1970 (uncertain, unassessed)
Species Eunotia damasi Hustedt, 1949 (uncertain, unassessed)
Species Eunotia damasii G. Moser, H. Lange-Bertalot & D. Metzeltin, 1998 (uncertain, unassessed)
Species Eunotia decaodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia declivis Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia decostae Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia decussata Cleve, 1900 (uncertain, unassessed)
Species Eunotia deficiens D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia deformis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia delicatula Ceremissinova (Tscheremissinova), 1955 (uncertain, unassessed)
Species Eunotia demerarae Ehrenberg ex Pritchard, 1861 (uncertain, unassessed)
Species Eunotia denaria Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia densistriata Torgan in Torgan & Becker, 1997 (uncertain, unassessed)
Species Eunotia densistriata Hohn, 1966 (uncertain, unassessed)
Species Eunotia denticula Grunow in Van Heurck, 1881 (uncertain, unassessed)
Species Eunotia denticula (L.A.Brébisson) G.L.Rabenhorst (uncertain, unassessed)
  » Variety Eunotia denticula var. borealis A.Cleve (uncertain, unassessed)
Species Eunotia denticulata (Brébisson ex Kützing) Rabenhorst, 1864 (uncertain, unassessed)
Species Eunotia denticulus (uncertain, unassessed)
  » Variety Eunotia denticulus var. denticulus Cleve, 1891 (uncertain, unassessed)
  » Variety Eunotia denticulus var. fennica Zauer, 1950 (uncertain, unassessed)
Species Eunotia depressa Fusey, 1953 (uncertain, unassessed)
Species Eunotia depressa Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia desikacharyi Singh, Nautiyal & Vimal, 1976 (uncertain, unassessed)
Species Eunotia desmogonioides D. Metzeltin & H. Lange-Bertalot, 2002 (uncertain, unassessed)
Species Eunotia diadema Ehrenberg, 1837 (uncertain, unassessed)
  » Variety Eunotia diadema var. tetraodon (Ehrenberg) Cleve-Euler, 1953 represented as Eunotia tetraodon Ehrenberg, 1838
  » Forma Eunotia diadema f. dentata A. Berg, 1953 (uncertain, unassessed)
  » Forma Eunotia diadema f. minuta (A. Berg) Woodhead & Tweed, 1960 (uncertain, unassessed)
  » Variety Eunotia diadema var. abrupta (Hustedt) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. densior Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. geniculata (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. insecta Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. intermedia Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diadema var. undosa (A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia dianae Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia didyma Grunow in Moller, 1881 (uncertain, unassessed)
  » Variety Eunotia didyma var. elongata (Grunow) Hustedt in Schmidt et al., 1913 represented as Eunotia formica var. elongata Grunow, 1865
  » Variety Eunotia didyma var. gibbosa (Grunow) Hustedt, 1913 represented as Eunotia gibbosa Grunow, 1881
  » Variety Eunotia didyma var. pileus (Ehrenberg) Frenguelli, 1933 represented as Eunotia pileus (Ehrenberg) Reichardt
  » Forma Eunotia didyma f. amazonensis De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
  » Forma Eunotia didyma f. attenuata Musafarov, 1952 (uncertain, unassessed)
  » Forma Eunotia didyma f. cuyabenensis De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
  » Forma Eunotia didyma f. genuina Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia didyma f. obtusa Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia didyma var. claviculata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia didyma var. curta Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia didyma var. elegantula Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia didyma var. inflata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia didyma var. jugulata Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia didyma var. maxima Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia didyma var. media Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia didyma var. papilio Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia didyma var. parallela Zimmermann, 1915 (uncertain, unassessed)
  » Variety Eunotia didyma var. pseudogibbosa Torgan, 1983 (uncertain, unassessed)
  » Variety Eunotia didyma var. recta Hustedt ex Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia didyma var. recurvata Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Variety Eunotia didyma var. tuberosa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia difformis (Ehrenberg) (uncertain, unassessed)
Species Eunotia diodon sensu W. Smith, 1853 (uncertain, unassessed)
Species Eunotia diodon Ehrenberg, 1837 (uncertain, unassessed)
  » Forma Eunotia diodon f. bidentula (W.Smith) Å.Berg, 1945 represented as Eunotia bidentula W.Smith, 1856
  » Forma Eunotia diodon f. diminuta (Grunow in Van Heurck) Mayer, 1913 represented as Eunotia diodon var. diminuta Grunow, 1881
  » Variety Eunotia diodon var. diminuta Grunow, 1881
  » Variety Eunotia diodon var. minutula (Grunow) Schonfeldt, 1913 represented as Eunotia minutula Grunow, 1862
  » Forma Eunotia diodon f. abnormis A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia diodon f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia diodon f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia diodon f. constricta Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia diodon f. densestriata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia diodon f. diodon Ehrenberg, 1837 (uncertain, unassessed)
  » Forma Eunotia diodon f. diodon Meister, 1912 (uncertain, unassessed)
  » Forma Eunotia diodon f. dovreensis A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia diodon f. eximia A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia diodon f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia diodon f. gibbosa Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia diodon f. integra Manguin, 1949 † (uncertain, unassessed)
  » Forma Eunotia diodon f. minor Grunow, 1881 (uncertain, unassessed)
  » Forma Eunotia diodon f. minor Truan y Luard, 1885 (uncertain, unassessed)
  » Variety Eunotia diodon var. bidentula (uncertain, unassessed)
  » Variety Eunotia diodon var. dovreensis (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diodon var. fontellii Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia diodon var. fukinensis Skvortzov, 2012 (uncertain)
  » Variety Eunotia diodon var. genuina Mayer, 1913 (uncertain, unassessed)
  » Variety Eunotia diodon var. koreana Skvortzow & Noda, 1971 (uncertain, unassessed)
  » Variety Eunotia diodon var. minor V.H. (uncertain, unassessed)
  » Variety Eunotia diodon var. sinica (Skvortzov) (uncertain)
  » Variety Eunotia diodon var. suecica Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia diodon var. truncata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
Species Eunotia diodonopsis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia directa Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
Species Eunotia discrepans A. Berg, 1939 (uncertain, unassessed)
Species Eunotia disjuncta D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia disproportionata Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia dissimilis Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Forma Eunotia dissimilis f. impressa Fusey, 1964 (uncertain, unassessed)
Species Eunotia distinguenda Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia distinguenda Hustedt, 1955 (uncertain, unassessed)
Species Eunotia divergens Fusey, 1964 (uncertain, unassessed)
Species Eunotia diverta Carter, 1966 (uncertain, unassessed)
Species Eunotia divisa Héribaud, 1908 (uncertain, unassessed)
  » Variety Eunotia divisa var. arctica Østrup, 1910 (uncertain, unassessed)
Species Eunotia dizyga Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia dodecaodon Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia doliolus G.C.Wallich (uncertain, unassessed)
Species Eunotia dolius Meunier, 1910 (uncertain, unassessed)
Species Eunotia donatoi D.Metzeltin & H.Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia dracomontana Schoeman, 1973 (uncertain, unassessed)
Species Eunotia duplicoraphis Kobayasi, Ando & Nagumo, 1981 (uncertain, unassessed)
Species Eunotia edlundii D.Metzeltin & H.Lange-Bertaolt, 2007 † (uncertain, unassessed)
Species Eunotia edulis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia ehrenbergii Ralfs, 1861 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. hexaglypha (Ehrenberg) Ant.Mayer, 1918 represented as Eunotia hexaglyphis Ehrenberg, 1854
  » Variety Eunotia ehrenbergii var. quaternaria (Ehrenberg) Ant.Mayer, 1918 represented as Eunotia quaternaria Ehrenberg, 1843
  » Variety Eunotia ehrenbergii var. quinaria (Ehrenberg) Ant.Mayer, 1918 represented as Eunotia quinaria Ehrenberg, 1843
  » Forma Eunotia ehrenbergii f. tenuistriata Grunow, 1882 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. bioctonaria (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. denaria (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. hexaglyphis (Ehrenberg) (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. nonaria (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. octonaria (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. quaternaria Grunow, 1882 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. quaternaria Pantocsek, 1892 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. septena (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. septenaria (Ehrenberg) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. trinaria Kisselev, 1927 (uncertain, unassessed)
  » Variety Eunotia ehrenbergii var. undenaria (Ehrenberg) Ant.Mayer, 1918 (uncertain, unassessed)
Species Eunotia electri Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia elegans Østrup, 1910 (uncertain, unassessed)
Species Eunotia elephas Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia ellisrasica Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia elongata Jousé, 1952 (uncertain, unassessed)
Species Eunotia elucens D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia endecaodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia enneodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia epithemioides Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia eruca Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia eulensteinii Comber, 1901 (uncertain, unassessed)
  » Forma Eunotia eulensteinii f. biconstricta Comber, 1901 (uncertain, unassessed)
  » Forma Eunotia eulensteinii f. constricta Comber, 1901 (uncertain, unassessed)
  » Forma Eunotia eulensteinii f. eulensteinii Comber, 1901 (uncertain, unassessed)
Species Eunotia eurycephaloides Norpel-Schempp & Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996 (uncertain, unassessed)
Species Eunotia euryptera Ehrenberg, 1856 (uncertain, unassessed)
Species Eunotia excepta S.L.VanLandingham (uncertain, unassessed)
Species Eunotia exeta A. Berg, 1939 (uncertain, unassessed)
Species Eunotia exgracilis A.Berg ex A.Cleve, 1953 (uncertain, unassessed)
  » Forma Eunotia exgracilis f. dentata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia exgracilis f. gamma A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia exgracilis var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia exgracilis var. tenuis Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia exiguadenticulata A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia exiguadenticulata f. alpha A. Berg, 1939 (uncertain, unassessed)
Species Eunotia exiguagracilis A. Berg, 1939 (uncertain, unassessed)
Species Eunotia fabeola D-Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia falcata Gregory, 1854 (uncertain, unassessed)
Species Eunotia falcifera D.Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia fallax A.Cleve, 1895 (uncertain, unassessed)
  » Variety Eunotia fallax var. arcuata (Østrup) Cleve-Euler, 1953 represented as Eunotia parallela var. arcuata Østrup, 1910
  » Variety Eunotia fallax var. groenlandica (Grunow) Lange-Bertalot & Nörpel, 1991 represented as Eunotia paludosa var. groenlandica Grunow in Van Heurck, 1880-1887
  » Forma Eunotia fallax f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia fallax f. densistriata Gonzalves & Gandhi, 1952 (uncertain, unassessed)
  » Forma Eunotia fallax f. distans Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia fallax f. subimpressa Cleve-Euler in Cleve-Euler et al., 1951 (uncertain, unassessed)
  » Variety Eunotia fallax var. aequalis Hustedt, 1937 (uncertain, unassessed)
  » Variety Eunotia fallax var. bacillum Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
  » Variety Eunotia fallax var. densestriata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia fallax var. dispersa Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia fallax var. gracillima Krasske, 1929 (uncertain, unassessed)
  » Variety Eunotia fallax var. lapponica Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia fallax var. major Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Eunotia fallax var. typica Ross, 1947 (uncertain, unassessed)
  » Variety Eunotia fallax var. vermicularis Manguin ex Kociolek & Reviers, 1996 (uncertain, unassessed)
Species Eunotia falx Gregory, 1854 (uncertain, unassessed)
Species Eunotia fastigata Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Variety Eunotia fastigata var. borealis Fusey, 1951 (uncertain, unassessed)
Species Eunotia fidelensis Zimmermann, 1915 (uncertain, unassessed)
Species Eunotia filum Gerd Moser (uncertain, unassessed)
Species Eunotia floegen A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia floegen f. alpha Berg, 1939 (uncertain, unassessed)
Species Eunotia floridana D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia floweri D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia fontellii A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia fontellii var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia fontellii var. perspicua A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia formica Ehrenberg, 1843 (uncertain, unassessed)
  » Forma Eunotia formica f. elongata (Grunow) Frenguelli, 1933 represented as Eunotia formica var. elongata Grunow, 1865
  » Variety Eunotia formica var. pileus (Ehrenberg) Grunow, 1865 represented as Eunotia pileus (Ehrenberg) Reichardt
  » Forma Eunotia formica f. alpha A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia formica f. beta A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia formica f. curta Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia formica f. elongata Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia formica f. stricta A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia formica var. bigibba Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia formica var. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Eunotia formica var. dubia Grunow in Cleve & Möller, 1882 (uncertain, unassessed)
  » Variety Eunotia formica var. elongata Skvortzow, 1929 (uncertain, unassessed)
  » Variety Eunotia formica var. elongata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia formica var. elongata Hustedt, 1909 (uncertain, unassessed)
  » Variety Eunotia formica var. genuina Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia formica var. genuina (Mayer) A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia formica var. genuina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia formica var. intermedia Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia formica var. minor Okuno, 1953 (uncertain, unassessed)
  » Variety Eunotia formica var. richmondiae Playfair, 1914 (uncertain, unassessed)
  » Variety Eunotia formica var. stricta (A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia formica var. subparallela Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Eunotia formica var. sumatrana Hustedt, 1935 (uncertain, unassessed)
Species Eunotia fossilis Pantocsek, 1913 (uncertain, unassessed)
Species Eunotia fragilarioides Zimmermann, 1918 (uncertain, unassessed)
  » Variety Eunotia fragilarioides var. elongata Skvortzow, 1929 (uncertain, unassessed)
Species Eunotia frickei Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia frickei f. genuina Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia frickei var. ceylonica Skvortzow, 1930 (uncertain, unassessed)
  » Variety Eunotia frickei var. elongata Hustedt, 1913 (uncertain, unassessed)
Species Eunotia friedel-hintzae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia fugitiva A. Berg, 1939 (uncertain, unassessed)
Species Eunotia fukushimae Gerd Moser (uncertain, unassessed)
Species Eunotia fuseyi Schoeman in Schoeman & Meaton, 1982 (uncertain, unassessed)
Species Eunotia gandhii Sarode & Kamat, 1984 (uncertain, unassessed)
Species Eunotia gangetica Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia garciarodriguezii D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia garusica Cholnoky, 1952 (uncertain, unassessed)
  » Variety Eunotia garusica var. polydentula Cholnoky, 1958 (uncertain, unassessed)
Species Eunotia geniculata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia genufalcata Gerd Moser (uncertain, unassessed)
Species Eunotia genuflexa Norpel-Schempp, 1996 (uncertain, unassessed)
Species Eunotia georgii D.Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia germainii Carter, 1990 (uncertain, unassessed)
Species Eunotia gibba (Ehrenberg) Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia gibberula Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia gibbosa Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia gibbosa var. constricta (Fontell) A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia gibbosa var. gracilis Lemmermann, 1910 (uncertain, unassessed)
  » Variety Eunotia gibbosa var. paraguayensis Hustedt in Schmidt et al., 1911 (uncertain, unassessed)
  » Variety Eunotia gibbosa var. simplex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia glacialispinosa H.Lange-Bertalot & M.Cantonati, 2010 (uncertain, unassessed)
Species Eunotia glebula Hohn, 1966 (uncertain, unassessed)
Species Eunotia globosa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia gomesii C.E.Wetzel & L.Ector, 2010 (uncertain, unassessed)
Species Eunotia goretskyi Chursevicz (Khursevich), 1978 (uncertain, unassessed)
  » Variety Eunotia goretskyi var. flexuosa Chursevicz (Khursevich), 1978 (uncertain, unassessed)
Species Eunotia gracilis W.Smith, 1853 (uncertain, unassessed)
  » Forma Eunotia gracilis f. alpha Berg A., 1939 (uncertain, unassessed)
  » Forma Eunotia gracilis f. beta Berg A., 1939 (uncertain, unassessed)
  » Forma Eunotia gracilis f. densestriata Sarode & Kamat, 1984 (uncertain, unassessed)
  » Forma Eunotia gracilis f. elongata Truan y Luard, 1885 (uncertain, unassessed)
  » Forma Eunotia gracilis f. gamma Berg A., 1939 (uncertain, unassessed)
  » Forma Eunotia gracilis f. gracilis (Ehrenberg) Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Eunotia gracilis f. major M. Peragallo & Héribaud in Héribaud, 1893 (uncertain, unassessed)
  » Forma Eunotia gracilis f. maxima Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia gracilis f. minor Dippel, 1905 (uncertain, unassessed)
  » Variety Eunotia gracilis var. capitata M. Peragallo & Héribaud in Héribaud, 1902 (uncertain, unassessed)
  » Variety Eunotia gracilis var. densestriata Skvortzov, 1976 (uncertain, unassessed)
  » Variety Eunotia gracilis var. fossilis Pantocsek, 1892 (uncertain, unassessed)
  » Variety Eunotia gracilis var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia gracilis var. intermedia Woronichin, 1929 (uncertain, unassessed)
  » Variety Eunotia gracilis var. major (M. Peragallo & Heribaud in Heribaud) Tempère & Peragallo, 1909 (uncertain, unassessed)
  » Variety Eunotia gracilis var. mayeri Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia gracilis var. nodosa Tempère & Peragallo, 1908 (uncertain, unassessed)
  » Variety Eunotia gracilis var. reflexa Cleve-Euler, 1939 (uncertain, unassessed)
  » Variety Eunotia gracilis var. rigida Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia gracilis var. robusta Héribaud, 1908 (uncertain, unassessed)
  » Variety Eunotia gracilis var. semel-monticulata Rattray, 1888 (uncertain, unassessed)
  » Variety Eunotia gracilis var. tenuissima A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia gracillimoides D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia graeca (Ehrenberg) Ehrenberg (uncertain, unassessed)
Species Eunotia granulata Ehrenberg, 1836 (uncertain, unassessed)
Species Eunotia granulosa Ehrenberg (uncertain, unassessed)
Species Eunotia graphica Å.Berg, 1939 (uncertain, unassessed)
Species Eunotia gregussii Szemes, 1931 (uncertain, unassessed)
Species Eunotia grovei Desikachary & Sreelatha, 1989 (uncertain, unassessed)
Species Eunotia guianensis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia hebridica A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia hebridica f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia hebridica f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia hebridica f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia hebridica f. linearis A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia hebridica var. bergii Gandhi, 1959 (uncertain, unassessed)
  » Variety Eunotia hebridica var. floegensis A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia hebridica var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia hebridica var. incapitata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia heinii D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia helix Manguin in Bourrelly & Manguin, 1949 (uncertain, unassessed)
Species Eunotia hellenica Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia hendecaodon Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia hepaticola H. Lange-Bertalot & U. Wydrzycka in Wydrzycka & Lange-Bertalot, 2001 (uncertain, unassessed)
Species Eunotia heptodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia herkiniensis Grunow in Van Heurck, 1881 (uncertain, unassessed)
Species Eunotia herzogii Krasske, 1948 (uncertain, unassessed)
Species Eunotia hexaglyphis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia hillae D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia hinganica Skvortzov, 1976 (uncertain, unassessed)
Species Eunotia hinziae Simonsen, 1987 (uncertain, unassessed)
  » Variety Eunotia hinziae var. diodon Simonsen, 1987 (uncertain, unassessed)
Species Eunotia hirudo D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia holoturia Skvortzow, 1936 (uncertain, unassessed)
Species Eunotia holstenborgi A. Berg, 1945 (uncertain, unassessed)
Species Eunotia hugenottarum Cholnoky, 1959 (uncertain, unassessed)
Species Eunotia humbertii Bourrelly & Leboime, 1946 (uncertain, unassessed)
Species Eunotia hungarica Pantocsek, 1903 (uncertain, unassessed)
  » Variety Eunotia hungarica var. gracilior Pantocsek, 1903 (uncertain, unassessed)
Species Eunotia hyperborea A.Berg, 1939 (uncertain, unassessed)
Species Eunotia iatriaensis Foged, 1970 (uncertain, unassessed)
Species Eunotia icosodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia implicata Nörpel, Lange-Bertalot & Alles, 1991 (uncertain, unassessed)
Species Eunotia impressa Ehrenberg, 1854 (uncertain, unassessed)
  » Forma Eunotia impressa f. angustissima Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia impressa var. angusta Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia impressa var. angusta Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia impressa var. directa (Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia impressa var. directa (Cleve-Euler) Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia impressa var. impressa Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia impressa var. minor Cleve, 1898 (uncertain, unassessed)
  » Variety Eunotia impressa var. undulata Bailey, 1924 (uncertain, unassessed)
  » Variety Eunotia impressa var. ventricosa Tempère & Peragallo, 1910 (uncertain, unassessed)
Species Eunotia inaequalis M.Peragallo, 1914 (uncertain, unassessed)
Species Eunotia incisa W.Smith ex W.Gregory, 1854 (uncertain, unassessed)
  » Variety Eunotia incisa var. beta Van Heurck (uncertain, unassessed)
  » Variety Eunotia incisa var. beta Gregory, 1854 (uncertain, unassessed)
  » Variety Eunotia incisa var. hyalina Grunow, 1882 (uncertain, unassessed)
  » Variety Eunotia incisa var. minor Cleve & Möller, 1878 (uncertain, unassessed)
  » Variety Eunotia incisa var. obtusa Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia incisa var. obtusiuscula Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia incisa var. subcapitata Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
Species Eunotia incisatula Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia incisiopsis D.Metzeltin & Lange-Bertalot, 2007 † (uncertain, unassessed)
Species Eunotia incurva Carter, 1966 (uncertain, unassessed)
Species Eunotia incurvata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia indica Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia indica var. undulata Hagelstein, 1939
  » Variety Eunotia indica var. bigibba Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia indica var. gracilis Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia indica var. ventralis Grunow, 1865 (uncertain, unassessed)
Species Eunotia indica Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia indigenarum Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia inepta Manguin, 1964 (uncertain, unassessed)
Species Eunotia informis D.Metzeltin & Lange-Bertalot, 2007 † (uncertain, unassessed)
Species Eunotia inscita Hustedt, 1952 (uncertain, unassessed)
Species Eunotia insociabilis Krasske, 1939 (uncertain, unassessed)
  » Variety Eunotia insociabilis var. capitellata Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia inspectabilis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia intermedia (Krasske) Nörpel & Lange-Bertalot, 1993 (uncertain, unassessed)
Species Eunotia intricans H. Lange-Bertalot & D. Metzeltin, 2009 (uncertain, unassessed)
Species Eunotia islandica Østrup, 1918 (uncertain, unassessed)
Species Eunotia itapuana L.C. Torgan in L.C. Torgan & V. Becker, 1998 (uncertain, unassessed)
Species Eunotia jaburuensis Zimmermann, 1918 (uncertain, unassessed)
Species Eunotia januarii Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia japonica Pantocsek, 1892 (uncertain, unassessed)
Species Eunotia jarensis H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito, 2003 (uncertain, unassessed)
Species Eunotia jastrabensis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia jemtlandica (Font.) A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia jemtlandica f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia jemtlandica f. bidens A. Berg, 1939 (uncertain, unassessed)
Species Eunotia joaquinii D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia jogensis Gandhi, 1966 (uncertain, unassessed)
Species Eunotia jordani Ehrenberg, 1849 (uncertain, unassessed)
Species Eunotia kanakarum Gerd Moser (uncertain, unassessed)
Species Eunotia karelica Mölder, 1951 (uncertain, unassessed)
Species Eunotia karenae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia katalinae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia kentuccensis Ehrenberg, 1856 (uncertain, unassessed)
Species Eunotia kissii D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia klischiae D.Metzeltin & H.Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia kocheliensis O.Müller, 1898 (uncertain, unassessed)
  » Variety Eunotia kocheliensis var. alpina Hirano, 1972 (uncertain, unassessed)
  » Variety Eunotia kocheliensis var. pygmaea Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
Species Eunotia krammeri D.Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia krammeri M. Kulikovskiy, H. Lange-Bertalot, S. Genkal & A. Witkowski, 2010 (uncertain, unassessed)
Species Eunotia krasskei Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia kruegeri H. Lange-Bertalot in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia kurzeana Grunow in Möller, 1881 (uncertain, unassessed)
Species Eunotia kurziana Grunow in Rabenhorst, 1873 (uncertain, unassessed)
Species Eunotia kurziana Grunow in Cleve & Möller, 1878 (uncertain, unassessed)
Species Eunotia kurzii Smith (uncertain, unassessed)
Species Eunotia kuznetzovae Afanas'eva & Gleser, 1986 (uncertain, unassessed)
Species Eunotia lacusbaikalii Skvortzow, 1937 (uncertain, unassessed)
Species Eunotia lacustris Fusey, 1964 (uncertain, unassessed)
Species Eunotia laevis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia lagosiana Grunow, 1884 (uncertain, unassessed)
Species Eunotia lanceolata A. Berg, 1939 (uncertain, unassessed)
Species Eunotia lapponica Grunow, 1895 (uncertain, unassessed)
  » Forma Eunotia lapponica f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia lapponica var. arctica A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia lapponica var. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia larva Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia lata Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
Species Eunotia latitaenia Kobayasi, Ando & Nagumo, 1981 (uncertain, unassessed)
Species Eunotia lavrovii Ceremissinova, 1955 (uncertain, unassessed)
  » Forma Eunotia lavrovii f. kamtschatica Lupikina, 1984 (uncertain, unassessed)
Species Eunotia lawsonii Foged, 1966 (uncertain, unassessed)
Species Eunotia lecohui B.van de Vijver, 2008 (uncertain, unassessed)
Species Eunotia lenis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia lepida Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia leptocampa Ehrenberg, 1872 (uncertain, unassessed)
Species Eunotia leptosoma Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia levicrenulata D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia levistriata Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
Species Eunotia lewisii P.A.Siver & P.B.Hamilton, 2009 (uncertain, unassessed)
Species Eunotia librile Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia limax Gerd Moser (uncertain, unassessed)
Species Eunotia limaxella D.Metzeltin & Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia lindigii Ehrenberg, 1853 (uncertain, unassessed)
Species Eunotia lineata K.E. Lohman, 1957 (uncertain, unassessed)
Species Eunotia lineolata Hustedt, 1949 (uncertain, unassessed)
  » Forma Eunotia lineolata f. minor Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia loboi C.E.Wetzel & L.Ector, 2010 (uncertain, unassessed)
Species Eunotia longicollis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia longicornis Ehrenberg, 1849 (uncertain, unassessed)
Species Eunotia longiformis Fusey, 1964 (uncertain, unassessed)
Species Eunotia longissima Hustedt, 1952 (uncertain, unassessed)
  » Variety Eunotia longissima var. africana Cholnoky, 1959 (uncertain, unassessed)
Species Eunotia luna Ehrenberg, 1845 † (uncertain, unassessed)
  » Forma Eunotia luna f. genuina Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia luna f. major Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia luna f. paucistriata Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia luna var. aequalis Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia luna var. elongata Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia luna var. globosa Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia luna var. intermedia Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia luna var. major Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia luna var. trapezica Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
Species Eunotia lunaris Brébisson ex Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Eunotia lunaris f. subsudetica Manguin, 1939
  » Forma Eunotia lunaris f. angulata (Mayer) Cleve-Euler, 1953 represented as Eunotia lunaris var. angulata Mayer, 1918
  » Forma Eunotia lunaris f. ceratoneoides (Mayer) Cleve-Euler, 1953 represented as Eunotia lunaris var. ceratonoides Mayer, 1918
  » Forma Eunotia lunaris f. excisa (Grunow in Van Heurck) Cleve-Euler, 1953 represented as Eunotia lunaris var. excisa Grunow, 1881
  » Forma Eunotia lunaris f. ventrosa (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 represented as Eunotia lunaris var. ventrosa A. Berg in manuscript Cleve-Euler, 1953
  » Variety Eunotia lunaris var. arcuata (Naegeli in Kutzing) Tempère & Peragallo, 1908 represented as Synedra arcuata Naegeli in Kutzing, 1849
  » Variety Eunotia lunaris var. clavigera (Mayer) Cleve-Euler, 1953 represented as Eunotia lunaris var. clavigera Mayer, 1918
  » Variety Eunotia lunaris var. falcata (Brebisson in Kutzing) A. Berg ex Cleve-Euler, 1953 represented as Synedra falcata Brébisson ex Kützing, 1849
  » Variety Eunotia lunaris var. minor (Molder) Cleve-Euler, 1953 represented as Eunotia parallela var. minor Mölder, 1937
  » Forma Eunotia lunaris f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia lunaris f. angulata (Mayer) Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia lunaris f. arcuata Frenguelli, 1933 (uncertain, unassessed)
  » Forma Eunotia lunaris f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia lunaris f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia lunaris f. densestriata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia lunaris f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia lunaris f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia lunaris f. minor Meyer & Reinhardt, 1925 (uncertain, unassessed)
  » Forma Eunotia lunaris f. minuta Cleve & Möller, 1878 (uncertain, unassessed)
  » Forma Eunotia lunaris f. rigida Frenguelli, 1933 (uncertain, unassessed)
  » Variety Eunotia lunaris var. angulata Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. attenuata Tempère & Peragallo, 1910 (uncertain, unassessed)
  » Variety Eunotia lunaris var. biceps Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia lunaris var. bilunaris Otto Muller, 1924 (uncertain, unassessed)
  » Variety Eunotia lunaris var. bilunaris Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. ceratonoides Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. clavigera Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. curta Szemes, 1931 (uncertain, unassessed)
  » Variety Eunotia lunaris var. elegantoides Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia lunaris var. elongata Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. glomerata H. Peragallo (uncertain, unassessed)
  » Variety Eunotia lunaris var. intermedia Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia lunaris var. lunaris (Grunow) Cleve-Euler, 1932 (uncertain, unassessed)
  » Variety Eunotia lunaris var. lunaris Grunow (uncertain, unassessed)
  » Variety Eunotia lunaris var. major Tempère & Peragallo, 1914 (uncertain, unassessed)
  » Variety Eunotia lunaris var. naegelii Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. planktonica Lemmermann, 1910 (uncertain, unassessed)
  » Variety Eunotia lunaris var. serpentina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia lunaris var. subarcuata Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia lunaris var. undulata Tempère & Peragallo, 1910 (uncertain, unassessed)
  » Variety Eunotia lunaris var. valida Szemes, 1931 (uncertain, unassessed)
  » Variety Eunotia lunaris var. vanheurckii Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Eunotia lunaris var. ventralis Mayer, 1913 (uncertain, unassessed)
  » Variety Eunotia lunaris var. ventrosa A. Berg in manuscript Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia lunaris var. veszpremiensis Szemes, 1931 (uncertain, unassessed)
Species Eunotia lunula Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia machaon D.Metzeltin & H-Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia macroglossa P.C.Furey, R.L.Lowe & J.R.Johansen, 2009 (uncertain, unassessed)
Species Eunotia maculata E.G.Lupikina & L.M.Dolmatova, 1984 † (uncertain, unassessed)
Species Eunotia majuscula Moiseeva, 1971 (uncertain, unassessed)
Species Eunotia manguinites VanLandingham, 1969 (uncertain, unassessed)
Species Eunotia mansiensis Foged, 1966 (uncertain, unassessed)
Species Eunotia margaritaceum Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia margaritata Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia margaritifera Rabenhorst, 1853 (uncertain, unassessed)
Species Eunotia marginistriata Carter & Denny, 1992 (uncertain, unassessed)
Species Eunotia marina Schrader, 1969 (uncertain, unassessed)
Species Eunotia matrix Å.Berg, 1939 (uncertain, unassessed)
Species Eunotia melanogaster Gerd Moser (uncertain, unassessed)
Species Eunotia meridiana Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia mesogongyla Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia mesolepta Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia messiana Cholnoky, 1955 (uncertain, unassessed)
Species Eunotia microstigma Ehrenberg, 1856 (uncertain, unassessed)
Species Eunotia minima Gutwinski, 1890 (uncertain, unassessed)
Species Eunotia minor Fusey, 1964 (uncertain, unassessed)
Species Eunotia minuta Cleve in Cleve & Moller, 1879 (uncertain, unassessed)
Species Eunotia minuta Hilse, 1861 (uncertain, unassessed)
Species Eunotia minuta Abdul-Majeed, 1935 (uncertain, unassessed)
Species Eunotia minutissima A.Cleve, 1934 (uncertain, unassessed)
Species Eunotia minutula Grunow, 1862 (uncertain, unassessed)
Species Eunotia miocenica Jousé, 1952 (uncertain, unassessed)
Species Eunotia mirifica Ehrenberg, 1854 † (uncertain, unassessed)
Species Eunotia mogolensis Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia monodon W. Smith, 1853 (uncertain, unassessed)
Species Eunotia monodontiforma H. Lange-Bertalot & M. Nörpel-Schempp in U. Rumrich, H. Lange-Bertaltot & M. Rumrich, 2000 (uncertain, unassessed)
Species Eunotia montana Gandhi, 1970 (uncertain, unassessed)
Species Eunotia montana Hustedt, 1949 (uncertain, unassessed)
Species Eunotia morbida Carter, 1966 (uncertain, unassessed)
Species Eunotia mosis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia multiplastidica Mayama, 1992 (uncertain, unassessed)
Species Eunotia muscicola Krasske, 1939 (uncertain, unassessed)
Species Eunotia napoleonica Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia neglecta D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia nehruii Gandhi, 1966 (uncertain, unassessed)
Species Eunotia neoborealis H. Lange-Bertalot in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia neocaledonia VanLandingham, 1969 (uncertain, unassessed)
Species Eunotia neocompacta Mayama, 1998 (uncertain, unassessed)
Species Eunotia neofallax Nörpel-Schempp & Lange-Bertalot in Lange-Bertalot, Kulbs, Lauser, Nörpel-Schempp & Willmann, 1996 (uncertain, unassessed)
Species Eunotia neomundana Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia nepalense Hirano, 1969 (uncertain, unassessed)
Species Eunotia nikolskiae Jousé, 1952 (uncertain, unassessed)
  » Variety Eunotia nikolskiae var. glacilis Ceremissinova, 1955 (uncertain, unassessed)
  » Variety Eunotia nikolskiae var. nikolskiae Ceremissinova, 1955 (uncertain, unassessed)
  » Variety Eunotia nikolskiae var. penzhica Lupikina & Dolmatova, 1985 (uncertain, unassessed)
Species Eunotia nivalis M.H.Hohn & J.Hellerman, 1963 (uncertain, unassessed)
Species Eunotia nodosa Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia nodosa A. Berg, 1939 (uncertain, unassessed)
Species Eunotia nodulosa Meister, 1932 (uncertain, unassessed)
Species Eunotia noerpeliana Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia nonaria Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia notabilis Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
Species Eunotia novaecaledonica Gerd Moser (uncertain, unassessed)
Species Eunotia nuristanica Hirano, 1964 (uncertain, unassessed)
Species Eunotia nymanniana Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. borealis (Cleve-Euler) Cleve-Euler, 1934 represented as Eunotia denticulata var. borealis A. Cleve, 1895
  » Forma Eunotia nymanniana f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia nymanniana f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia nymanniana f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia nymanniana f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia nymanniana f. nymanniana Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. compacta (Hustedt) Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. curta A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. densestriata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. genuina Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. hemicyclus Cleve-Euler, 1934 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. inflata Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Eunotia nymanniana var. memeruensis A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. minuta Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia nymanniana var. procera A. Berg in man., Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia obtusa Hustedt, 1952 (uncertain, unassessed)
Species Eunotia occulata Patrick & Freese, 1961 (uncertain, unassessed)
Species Eunotia ocellata Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia octodon Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia octonaria Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia oestrupi Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
Species Eunotia okawangoi Cholnoky, 1966 (uncertain, unassessed)
Species Eunotia oklahomaensis Bond, 1968 (uncertain, unassessed)
Species Eunotia oliffii Cholnoky, 1956 (uncertain, unassessed)
Species Eunotia omega A. Berg, 1939 (uncertain, unassessed)
Species Eunotia ophidocampa Cleve, 1882 (uncertain, unassessed)
Species Eunotia orientis M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkovski, 2010 (uncertain, unassessed)
Species Eunotia osoresanensis Negoro, 1944 (uncertain, unassessed)
  » Variety Eunotia osoresanensis var. cuneata T. Watanabe, 2004 (uncertain, unassessed)
Species Eunotia otrantina Rabenhorst, 1853 (uncertain, unassessed)
Species Eunotia pachycephala Kützing, 1849 (uncertain, unassessed)
Species Eunotia pachycephala A. Berg, 1945 (uncertain, unassessed)
Species Eunotia pacifica Skvortzov, 2012 (uncertain)
Species Eunotia palatina H. Lange-Bertalot & W. Krüger in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia papilio Hustedt in Schmidt et al., 1911 (uncertain, unassessed)
Species Eunotia papillo (uncertain, unassessed)
  » Variety Eunotia papillo var. africana Fusey, 1964 (uncertain, unassessed)
Species Eunotia paradoxa Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia paradoxa A. Berg, 1939 (uncertain, unassessed)
Species Eunotia parallelum Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia parapectinalis H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000 (uncertain, unassessed)
Species Eunotia parapraerupta Lange-Bertalot & Metzeltin, 2009 (uncertain, unassessed)
Species Eunotia parasiolii D.Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia patrickae Hustedt, 1965 (uncertain, unassessed)
Species Eunotia patrickii Gandhi, 1966 (uncertain, unassessed)
Species Eunotia paucistriata Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
Species Eunotia pauloimpressa D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia paulovalida D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia pectinalis (Kützing) Rabenhorst, 1864 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. subsudetica Manguin, 1939
  » Variety Eunotia pectinalis var. biconstricta Grunow
  » Variety Eunotia pectinalis var. undulata (Ralfs) Rabenhorst, 1864
  » Variety Eunotia pectinalis var. ventricosa (Ehrenberg) Grunow, 1881
  » Forma Eunotia pectinalis f. biconstricta (Grunow in Van Heurck) Mayer, 1916 represented as Eunotia pectinalis f. biconstricta Grunow in Van Heurck, 1881
  » Forma Eunotia pectinalis f. didymodon (Grunow) Å.Berg, 1939 represented as Eunotia camelus var. didymodon Grunow, 1865
  » Forma Eunotia pectinalis f. impressa (Ehrenberg) Hustedt, 1930 represented as Eunotia impressa Ehrenberg, 1854
  » Forma Eunotia pectinalis f. impressa (Otto Müller) Ant.Mayer, 1913
  » Forma Eunotia pectinalis f. incisa (Otto Müller) Mayer, 1913 represented as Eunotia pectinalis f. incisa Otto Müller, 1898
  » Forma Eunotia pectinalis f. minor (Kützing) Otto Müller, 1910 represented as Himantidium minus Kützing, 1844
  » Forma Eunotia pectinalis f. minor (Kützing) A.Berg, 1939 represented as Himantidium minus Kützing, 1844
  » Forma Eunotia pectinalis f. pectinalis (Kützing) Rabenhorst, 1864 represented as Himantidium pectinale var. pectinale Kützing, 1844
  » Forma Eunotia pectinalis f. triundulata (Grunow in Rabenhorst; Rabenhorst) Mayer, 1916 (1917) represented as Eunotia pectinalis var. triundulata Grunow, 1865
  » Forma Eunotia pectinalis f. undulata (J.Ralfs) A.Berg, 1939 represented as Fragilaria pectinalis var. undulata Ralfs, 1843
  » Forma Eunotia pectinalis f. ventralis (Ehrenberg) Hustedt, 1957 represented as Eunotia ventralis Ehrenberg, 1843
  » Forma Eunotia pectinalis f. ventricosa (Ehrenberg) Grunow in Van Heurck, 1881 represented as Heterocampa ventricosa Ehrenberg, 1869 †
  » Variety Eunotia pectinalis var. gibbulosus Venkataraman, 1939 represented as Eunotia gibbuolosa (Venkataraman, 1939) Glushchenko, Kulikovskiy & Kociolek in Glushchenko et al., 2018 (raised to species status)
  » Variety Eunotia pectinalis var. minus (Kützing) Rabenhorst, 1864 represented as Himantidium minus Kützing, 1844
  » Variety Eunotia pectinalis var. soleirolii (Kützing) H.F.Van Heurck, 1896 represented as Himantidium soleirolii Kützing, 1844
  » Variety Eunotia pectinalis var. stricta (Rabenhorst) van Heurck, 1881 represented as Himantidium strictum Rabenhorst, 1853
  » Variety Eunotia pectinalis var. minor (Kützing) Rabenhorst, 1864 accepted as Eunotia minor (Kützing) Grunow, 1881 (synonym)
  » Variety Eunotia pectinalis var. ventralis (Ehrenberg) Hustedt, 1911 accepted as Eunotia pectinalis var. ventricosa (Ehrenberg) Grunow, 1881 (synonym)
  » Forma Eunotia pectinalis f. affines Manguin, 1942 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. antiqua Lupikina, 1984 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. arverna Tempère & Peragallo, 1908 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. biarcuata A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. biconstricta Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. biundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. biundulata Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. capitata A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. conifera Maillard, 1977 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. cristula A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. cum valvis (uncertain, unassessed)
    » Subforma Eunotia pectinalis f. cum valvis internis Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. curta Van Heurck, 1880-1885 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. curta (Van Heurck) Wolle, 1890 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. curta Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. curta (Van Heurck) Skvortzow, 1928 (uncertain, unassessed)
    » Subforma Eunotia pectinalis f. curta incisa Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. delta A.Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. directa Cleve-Euler, 1932 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. elongata van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. elongata Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. epsilon A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. eta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. fossilis Manguin, 1949 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. genuina Mayer, 1913 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. gibbosa A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. grossestriata Cholnoky, 1952 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. huglii A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. hybrida Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. incisa Hustedt, 1921 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. incisa Krasske, 1957 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. incisa Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. intermedia Krasske ex Hustedt, 1932 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. iota A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. iota A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. kappa A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. lambda A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. major Brun, 1901 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. majuscula Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. media (Otto Müller) Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. media Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. minor Frenguelli, 1935 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. minor Krasske, 1925 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. minores Hustedt in Schmidt et al., 1911 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. minutissima Mayer, 1918 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. novemundulata Grunow in Rabenhorst, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. octoundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. quadriundulata (Grunow ex Rabenhorst) Gutwinski, 1909 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. quadriundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. quinqueundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. sellula A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. septemundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. sexundulata Grunow, 1865 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. subimpressa Cleve-Euler, 1953 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. theta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. triodon Manguin, 1952 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. triundulata Otto Müller, 1910 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. undosa A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. undulata Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Eunotia pectinalis f. ventricosa (Grunow in Van Heurck) Mayer, 1916 (1917) (uncertain, unassessed)
  » Forma Eunotia pectinalis f. zeta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pectinalis f. zeta A. Berg, 1939 (uncertain, unassessed)
  » Subspecies Eunotia pectinalis subsp. amoyensis Skvortzov, 2012 (uncertain)
  » Variety Eunotia pectinalis var. amoyensis Skvortzov, 2012 (uncertain)
  » Variety Eunotia pectinalis var. angusta (Grunow in Van Heurck) (uncertain, unassessed)
  » Variety Eunotia pectinalis var. angustata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. biarcuata (A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. biarcuata M. Peragallo in Tempère & Peragallo, 1908 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. biconstrictadentata Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. biconstrictaundosa Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. bidens Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Eunotia pectinalis var. borealis Grunow, 1884 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. capitata (A. Berg) A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. chinensis Skvortzow, 1929 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. compacta A.Cleve, 1895 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. compacta Magdeburg, 1926 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. crassa O.Müller, 1898 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. curta (Grunow) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. curta Skvortzov (uncertain)
  » Variety Eunotia pectinalis var. cymbelloides Mayer, 1916 (1917) (uncertain, unassessed)
  » Variety Eunotia pectinalis var. elongata (Van Heurck) Wolle, 1890 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. genuina Saveljewa-Dolgova, 1925 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. genuina Kirchner, 1878 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. gibbosa (A. Berg) Symoens, 1960 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. gothica Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. hongkongensis Skvortzov, 1975 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. incisa (Otto Müller) Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. jeniseyensis Skvortzow, 1971 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. krasskei Cholnoky, 1954 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. majuscula Grunow in Cleve & Möller, 1879 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. maxima (uncertain, unassessed)
  » Variety Eunotia pectinalis var. media (Otto Müller) Meister, 1912 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. minus (Otto Müller) Mayer, 1913 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. minutissima Mayer, 1918 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. neglecta Gandhi, 1957 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. pectinalis Otto Müller, 1898 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. polyplastidica Geitler, 1958 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. pusilla Mayer, 1913 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. rostrata Germain, 1981 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. sahyadrica Sarode & Kamat, 1984 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. sinica Skvortzov, 2012 (uncertain)
  » Variety Eunotia pectinalis var. subitoangustata Pantocsek & Greguss in Greguss, 1913 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. tenuis Grunow in Cleve & Möller, 1878 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. trachytica Pantocsek, 1892 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. triundulata Grunow, 1865 (uncertain, unassessed)
  » Variety Eunotia pectinalis var. venter Tempère & Peragallo, 1909 (uncertain, unassessed)
Species Eunotia pectinata (uncertain, unassessed)
  » Variety Eunotia pectinata var. triundulata Kisselev, 1931 (uncertain, unassessed)
  » Variety Eunotia pectinata var. undulata Kisselev, 1931 (uncertain, unassessed)
Species Eunotia pectinoides Zimmermann, 1915 (uncertain, unassessed)
Species Eunotia pectinoides J.R.Carter, 1966 (uncertain, unassessed)
Species Eunotia pendens Héribaud, 1908 (uncertain, unassessed)
Species Eunotia pentaglyphis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia pentodon Ehrenberg, 1837 (uncertain, unassessed)
  » Variety Eunotia pentodon var. demerarae Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia perpusilla Grunow, 1881 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. perminuta (Grunow) R.Ross, 1947 represented as Eunotia tridentula var. perminuta Grunow, 1881
  » Subspecies Eunotia perpusilla subsp. perminuta (Grun. In van Heurck) R. Ross, 1947 accepted as Eunotia tridentula Ehrenberg, 1843
  » Forma Eunotia perpusilla f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia perpusilla f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia perpusilla f. perpusilla Grunow in Van Heurck, 1881 (uncertain, unassessed)
  » Forma Eunotia perpusilla f. simplex (Mayer) Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia perpusilla f. tridentata (Mayer) Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. constricta A. Berg in man., Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. crenata A. Berg in man., Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. simplex (Mayer) A. Berg in Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia perpusilla var. tridentata (Mayer) A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia peudofaba D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia pexii H. Lange-Bertalot in Werum & Lange-Bertalot, 2004 (uncertain, unassessed)
Species Eunotia phrygia Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia pileata Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia pileus (Ehrenberg) Reichardt (uncertain, unassessed)
Species Eunotia pirarucu Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia pirla J.R.Carter & Flower, 1988 (uncertain, unassessed)
Species Eunotia piscis (Ehrenberg) (uncertain, unassessed)
Species Eunotia placentula (uncertain, unassessed)
  » Variety Eunotia placentula var. klinoraphis Molder, 1938 (uncertain, unassessed)
Species Eunotia planicrenulata Lange-Bertalot & D. Metzeltin, 2009 (uncertain, unassessed)
Species Eunotia platycephala D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia plectrum Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia plicata Jao, 1964 (uncertain, unassessed)
Species Eunotia pocosinensis E.E. Gaiser & J. Johansen, 2000 (uncertain, unassessed)
Species Eunotia polydentula Brun (uncertain, unassessed)
  » Forma Eunotia polydentula f. perminuta (Grunow in Van Heurck) Cleve-Euler, 1953 represented as Eunotia tridentula var. perminuta Grunow, 1881
  » Forma Eunotia polydentula f. perpusilla (Grunow in Van Heurck) Hustedt, 1932 represented as Eunotia tridentula var. perpusilla Grunow in Van Heurck, 1881
  » Forma Eunotia polydentula f. polydentula (Brun) Hustedt, 1932 represented as Himantidium polydentula Brun, 1880
  » Variety Eunotia polydentula var. ventricosa (M. Peragallo) Frenguelli, 1942 represented as Eunotia tridentula var. ventricosa M. Peragallo, 1921
  » Forma Eunotia polydentula f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia polydentula f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia polydentula f. monodon (Mayer) A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia polydentula f. quadridentula Krasske, 1957 (uncertain, unassessed)
  » Forma Eunotia polydentula f. tridentula Krasske, 1957 (uncertain, unassessed)
  » Forma Eunotia polydentula f. validior Tarnavschi & Jitariu, 1955 (uncertain, unassessed)
  » Variety Eunotia polydentula var. bidentula W. Smith, 1903 (uncertain, unassessed)
  » Variety Eunotia polydentula var. complanata Manguin, 1964 (uncertain, unassessed)
  » Variety Eunotia polydentula var. constricta Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia polydentula var. crenata (A. Berg in man. Cleve-Euler) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia polydentula var. fossilis Héribaud, 1903 (uncertain, unassessed)
  » Variety Eunotia polydentula var. mediotumida Manguin in Bourrelly & Manguin, 1954 (uncertain, unassessed)
  » Variety Eunotia polydentula var. monodon (Mayer) Mayer, 1940 (uncertain, unassessed)
  » Variety Eunotia polydentula var. recta A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia polydentula var. rostrata A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia polydentula var. tridentula Ehrenberg, 1903 (uncertain, unassessed)
Species Eunotia polyglyphoides Sheshukova-Poretskaya in Tscheremissinova, 1971 (uncertain, unassessed)
  » Variety Eunotia polyglyphoides var. tunkaensis Cheremisinova, 1971 (uncertain, unassessed)
Species Eunotia polygyphis (uncertain, unassessed)
Species Eunotia polyodon Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia pomerooni Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia ponspendens Gerd Moser (uncertain, unassessed)
Species Eunotia ponticulus D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia porcelloides Gandhi, 1970 (uncertain, unassessed)
Species Eunotia porcellus Cholnoky, 1955 (uncertain, unassessed)
Species Eunotia prae-chankensis Jousé, 1952 (uncertain, unassessed)
Species Eunotia praefaba Gleser, 1967 (uncertain, unassessed)
Species Eunotia praenana A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia praerupta auct. non Ehrenberg (uncertain, unassessed)
Species Eunotia praeruptaminor (uncertain, unassessed)
  » Forma Eunotia praeruptaminor f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptaminor f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptaminor f. polaris A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptaminor f. praeruptaminor A. Berg, 1939 (uncertain, unassessed)
Species Eunotia praeruptamonos (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. praeruptamonos (Ehrenberg) A. Berg, 1939 represented as Eunotia praerupta f. inflata (Grunow) J.Frenguelli, 1924
  » Forma Eunotia praeruptamonos f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. clivosa Cleve-Euler, 1948 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. cornuta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. laticeps Cleve-Euler, 1948 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. muscicola (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. normalis Cleve-Euler, 1948 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. perlonga Cleve-Euler in Cleve-Euler et al., 1951 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. polaris A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia praeruptamonos f. undata A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia praeruptamonos var. intermedia Cleve-Euler, 1948 (uncertain, unassessed)
Species Eunotia praeruptanana (uncertain, unassessed)
  » Variety Eunotia praeruptanana var. alpha A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia praeruptanana var. praeruptanana A. Berg, 1939 (uncertain, unassessed)
Species Eunotia praestans Gerd Moser (uncertain, unassessed)
Species Eunotia priodonta H.Reichelt (uncertain, unassessed)
Species Eunotia prionotus Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia problematica M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkowski, 2010 (uncertain, unassessed)
Species Eunotia procera Ehrenberg, 1848 (uncertain, unassessed)
Species Eunotia producta Frenguelli, 1933 (uncertain, unassessed)
Species Eunotia pseudoconvexa Cholnoky, 1956 (uncertain, unassessed)
Species Eunotia pseudodiodon D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia pseudoelegans Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia pseudofaba D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia pseudofragilaria P.A.Siver, P.B.Hamilton & E.A.Morales, 2006 (uncertain, unassessed)
Species Eunotia pseudolunaris Manguin, 1962 (uncertain, unassessed)
Species Eunotia pseudolunaris Venkataraman, 1939 (uncertain, unassessed)
Species Eunotia pseudopapilio Lange-Bertalot & M.Nörpel-Schempp, 1998 (uncertain, unassessed)
Species Eunotia pseudoparallela Cleve-Euler, 1934 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. delta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. gamma A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. nagpurensis Sarode & Kamat, 1984 (uncertain, unassessed)
  » Forma Eunotia pseudoparallela f. pseudoparallela A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia pseudoparallela var. densestriata A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pseudoparallela var. dubia A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia pseudoparallela var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia pseudoparalleloides (Grunow) Norpel-Schempp & Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996 (uncertain, unassessed)
Species Eunotia pseudoserra De Oliveira & Steinitz-Kannan, 1992 (uncertain, unassessed)
Species Eunotia pseudoserrata Kobayasi, Ando & Nagumo, 1981 (uncertain, unassessed)
Species Eunotia pseudosoresanensis T.Wanatabe, 2004 (uncertain, unassessed)
Species Eunotia pseudosudetica D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia pseudotridentula H.Kobayasi, 1971 (uncertain, unassessed)
Species Eunotia pseudovalida Mayama, 1997 (uncertain, unassessed)
Species Eunotia pseudoveneris Hustedt, 1942 (uncertain, unassessed)
Species Eunotia pugilistica B.van de Vijver, 2008 (uncertain, unassessed)
Species Eunotia punctistriata K.E. Camburn & D.F. Charles, 2000 (uncertain, unassessed)
Species Eunotia pyramidatoides Nörpel-Schempp in Lange-Bertalot, Kulbs, Lauser, Norpel-Schempp & Willmann, 1996 (uncertain, unassessed)
Species Eunotia pyrenaica Manguin in Allorge & Manguin, 1941 (uncertain, unassessed)
Species Eunotia quadra P.A.Siver & P.B.Hamilton, 2009 (uncertain, unassessed)
Species Eunotia quaternaria Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia quatuordenaria Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia quinaria Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia quindenaria Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia quinquicostata Rabenhorst, 1853 (uncertain, unassessed)
Species Eunotia raphidioides T.Wanatabe, 2004 (uncertain, unassessed)
Species Eunotia rauhii Manguin, 1964 (uncertain, unassessed)
Species Eunotia raytonensis Cholnoky, 1955 (uncertain, unassessed)
Species Eunotia recta Hustedt ex Simonsen, 1987 (uncertain, unassessed)
Species Eunotia reedi Schrader, 1969 (uncertain, unassessed)
Species Eunotia reichardtii Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia reicheltii (uncertain, unassessed)
Species Eunotia reimeri D.M.Williams & G.Reid, 2004 (uncertain, unassessed)
Species Eunotia reniformis Huang in Huang & Cai, 1984 (uncertain, unassessed)
Species Eunotia retrorsa Fusey, 1951 (uncertain, unassessed)
Species Eunotia reversa Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia revoluta Cleve-Euler, 1932 (uncertain, unassessed)
Species Eunotia rhomboidea Hustedt, 1950 (uncertain, unassessed)
Species Eunotia rhyncocephala (uncertain, unassessed)
  » Variety Eunotia rhyncocephala var. rhyncocephala Hustedt, 1936 (uncertain, unassessed)
  » Variety Eunotia rhyncocephala var. undulata Hustedt, 1936 (uncertain, unassessed)
Species Eunotia rica Carter & Denny, 1987 (uncertain, unassessed)
Species Eunotia rivularis Gandhi, 1970 (uncertain, unassessed)
Species Eunotia robust (uncertain, unassessed)
Species Eunotia roland-schmidtii D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia rostellata Hustedt, 1913 (uncertain, unassessed)
Species Eunotia rostrata Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia rostrata A. Berg, 1939 (uncertain, unassessed)
Species Eunotia ruth-patrickiae Gandhi, 1970 (uncertain, unassessed)
Species Eunotia ruzickae Bily & Marvan, 1962 (uncertain, unassessed)
Species Eunotia sacculus D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia sahayadrensis H.P. Gandhi, 1998 (uncertain, unassessed)
Species Eunotia salamencensis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain, unassessed)
Species Eunotia sanctiantonii Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia saravathense Gandhi, 1970 (uncertain, unassessed)
Species Eunotia sardiniensis H.Lange-Bertalot, P.Cavacini, N.Tagliaventi & S.Alfinito, 2003 (uncertain, unassessed)
Species Eunotia sarraceniae E.E. Gaiser & J. Johansen, 2000 (uncertain, unassessed)
Species Eunotia savannae Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia scaettae Zanon, 1938 (uncertain, unassessed)
Species Eunotia scalaris Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia scandinavica A.Cleve ex Font., 1917 (uncertain, unassessed)
  » Forma Eunotia scandinavica f. angusta Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia scandinavica f. scandinavica A. Cleve in litt. Fontell, 1917 (uncertain, unassessed)
  » Forma Eunotia scandinavica f. typica Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia scandiorussica M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkowski, 2010 (uncertain, unassessed)
Species Eunotia scarda A. Berg, 1939 (uncertain, unassessed)
Species Eunotia scardaensis A. Berg ex Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia schneideri Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia schwabei Krasske, 1939 (uncertain, unassessed)
Species Eunotia schweickerdtii Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia sella Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia semilunaris Ehrenberg, 1842 (uncertain, unassessed)
Species Eunotia seminulum Norpel-Schempp & Lange-Bertalot in Lange-Bertalot & Metzeltin, 1996 (uncertain, unassessed)
Species Eunotia senaria Ehrenberg, 1848 (uncertain, unassessed)
Species Eunotia sendaiensis Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
Species Eunotia sennae M.G.M.de Souza & P.Compère, 1999 (uncertain, unassessed)
Species Eunotia septena Ehrenberg, 1843 (uncertain, unassessed)
Species Eunotia septenaria Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia septentrionalis auct. non Oestrup (uncertain, unassessed)
Species Eunotia serpentina Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia serra Ehrenberg, 1837 (uncertain, unassessed)
Species Eunotia serra-australis Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia serrata Hustedt in Schmidt et al., 1911 (uncertain, unassessed)
Species Eunotia serrulata Ehrenberg, 1840 (uncertain, unassessed)
Species Eunotia shantungensis Skvortzov, 2012 (uncertain)
Species Eunotia siberica Cleve, 1880 (uncertain, unassessed)
Species Eunotia sibirica Ehrenberg, 1854 (uncertain, unassessed)
  » Forma Eunotia sibirica f. perarcuata Cleve-Euler in man. A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sibirica f. stuxbergi A. Berg, 1939 (uncertain, unassessed)
  » Variety Eunotia sibirica var. genuina Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sibirica var. neroense Wislouch, 1921 (uncertain, unassessed)
  » Variety Eunotia sibirica var. perarcuata (Cleve-Euler ex A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sibirica var. rectaventralis Saveljewa-Dolgova, 1925 (uncertain, unassessed)
  » Variety Eunotia sibirica var. stuxbergii (A. Berg) Cleve-Euler, 1953 (uncertain, unassessed)
Species Eunotia sicula Cleve-Euler, 1934 (uncertain, unassessed)
Species Eunotia silvae Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia silvahercynia Nörpel, Van Sull & Lange-Bertalot, 1991 (uncertain, unassessed)
Species Eunotia sima Ehrenberg, 1845 (uncertain, unassessed)
Species Eunotia similis Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Forma Eunotia similis f. minima Cholnoky, 1955 (uncertain, unassessed)
  » Forma Eunotia similis f. minuta Cholnoky, 1952 (uncertain, unassessed)
  » Forma Eunotia similis f. triundulata Cholnoky, 1955 (uncertain, unassessed)
  » Variety Eunotia similis var. densestriata Cholnoky, 1955 (uncertain, unassessed)
Species Eunotia sinuosa Hustedt, 1952 (uncertain, unassessed)
Species Eunotia siolii Hustedt, 1952 (uncertain, unassessed)
Species Eunotia sioliopsis Gerd Moser (uncertain, unassessed)
Species Eunotia siveri D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia skvortzowii Jousé, 1952 (uncertain, unassessed)
Species Eunotia smithiae S.P. Main, 2004 (uncertain, unassessed)
Species Eunotia smithii Gutwinsky, 1895 (uncertain, unassessed)
Species Eunotia smithii Woodhead & Tweed, 1960 (uncertain, unassessed)
Species Eunotia soleirolii (W. Smith) (uncertain, unassessed)
Species Eunotia soleri D.Metzeltin & Lange-Bertalot, 1998 (uncertain, unassessed)
Species Eunotia sorriensis N.Foged, 1966 (uncertain, unassessed)
Species Eunotia souzae D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain, unassessed)
Species Eunotia sparsimpunctata Jousé, 1952 (uncertain, unassessed)
Species Eunotia sparsiornata Gerd Moser (uncertain, unassessed)
Species Eunotia sparsistriata Mayama, 1993 (uncertain, unassessed)
Species Eunotia sphaerophora Ehrenberg, 1856 (uncertain, unassessed)
Species Eunotia sphaerula Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia sphagnophila Krasske, 1948 (uncertain, unassessed)
Species Eunotia spiculaeformis Kociolek & Reviers, 1996 (uncertain, unassessed)
Species Eunotia spinuligera E.G.Lupikina, 1965 † (uncertain, unassessed)
Species Eunotia stehlei Manguin in Bourrelly & Manguin, 1952 (uncertain, unassessed)
Species Eunotia steineckei Petersen, 1930 (uncertain, unassessed)
Species Eunotia stevensonii Boyer, 1920 (uncertain, unassessed)
Species Eunotia stricta Hustedt, 1965 (uncertain, unassessed)
  » Forma Eunotia stricta f. capitata Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia stricta (Rabenhorst) (uncertain, unassessed)
Species Eunotia subaequalis Hustedt in Schmidt et al., 1933 (uncertain, unassessed)
  » Forma Eunotia subaequalis f. capitata Cholnoky, 1954 (uncertain, unassessed)
Species Eunotia subarcuatoides Alles, Nörpel & Lange-Bertalot, 1991 (uncertain, unassessed)
Species Eunotia subcapitata M.Kulikovskiy, H.Lange-Bertalot, S.Genkal & A.Witkowski, 2010 (uncertain, unassessed)
Species Eunotia subelegans Skvortzov, 2012 (uncertain)
Species Eunotia subgibba Gandhi, 1966 (uncertain, unassessed)
Species Eunotia sublitoralis Skabichevskii, 1976 (uncertain, unassessed)
Species Eunotia sublunaris Gandhi, 1970 (uncertain, unassessed)
Species Eunotia submonodon Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Forma Eunotia submonodon f. depressa A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia submonodon f. fossilis Moiseeva, 1959 (uncertain, unassessed)
  » Variety Eunotia submonodon var. hispida Jousé, 1952 (uncertain, unassessed)
Species Eunotia subpolyglyphis Krasske, 1948 (uncertain, unassessed)
Species Eunotia subrabenhorstii Fusey, 1964 (uncertain, unassessed)
Species Eunotia subrobusta Hustedt, 1913 (uncertain, unassessed)
Species Eunotia subtaeniata Hustedt, 1952 (uncertain, unassessed)
  » Forma Eunotia subtaeniata f. simplex Hustedt, 1952 (uncertain, unassessed)
Species Eunotia subtilis Ehrenberg, 1854 (uncertain, unassessed)
Species Eunotia subtilissima Å.Berg, 1939 (uncertain, unassessed)
Species Eunotia subulata Ehrenberg, 1849 (uncertain, unassessed)
Species Eunotia subveneris (Skvortzov) (uncertain)
Species Eunotia sudetica Otto Müller, 1898 (uncertain, unassessed)
  » Forma Eunotia sudetica f. revoluta (Cleve-Euler) A. Berg, 1939 represented as Eunotia revoluta Cleve-Euler, 1932
  » Variety Eunotia sudetica var. crassa (Otto Müller) A. Berg in man. Cleve-Euler, 1953 represented as Eunotia pectinalis var. crassa O.Müller, 1898
  » Variety Eunotia sudetica var. revoluta (Cleve-Euler) A. Berg in man. Cleve-Euler, 1953 represented as Eunotia revoluta Cleve-Euler, 1932
  » Forma Eunotia sudetica f. alpha A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sudetica f. beta A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sudetica f. cameroonensis A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sudetica f. emycephala Cleve-Euler in man. A. Berg, 1939 (uncertain, unassessed)
  » Forma Eunotia sudetica f. gibbosa Manguin, 1949 (uncertain, unassessed)
  » Forma Eunotia sudetica f. hankensis Skvortzow, 1929 (uncertain, unassessed)
  » Forma Eunotia sudetica f. minor Manguin in Bourrelly & Manguin, 1949 (uncertain, unassessed)
  » Variety Eunotia sudetica var. australis Cleve-Euler, 1948 (uncertain, unassessed)
  » Variety Eunotia sudetica var. baicalensis Skvortzow & Meyer, 1928 (uncertain, unassessed)
  » Variety Eunotia sudetica var. bidens Hustedt in Schmidt et al., 1913 (uncertain, unassessed)
  » Variety Eunotia sudetica var. capitata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sudetica var. delicatula Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sudetica var. densestriata A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sudetica var. empycephala (Cleve-Euler in man. A. Berg) A. Berg in man. Cleve-Euler, 1953 (uncertain, unassessed)
  » Variety Eunotia sudetica var. hamuranaensis Foged, 1979 (uncertain, unassessed)
  » Variety Eunotia sudetica var. incisa (Gregory) Manguin in Bourrelly & Manguin, 1949 (uncertain, unassessed)
  » Variety Eunotia sudetica var. nipponica Skvortzow, 1936 (uncertain, unassessed)
  » Variety Eunotia sudetica var. pseudo-impressa Manguin & Dubois-Tylski, 1969 (uncertain, unassessed)
  » Variety Eunotia sudetica var. undulata M.