DiatomBase
Between brackets is the number of accepted extant species
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- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Superorder Bacillariophycanae (4 083)
- Order Achnanthales (438)
- Order Bacillariales (357)
- Order Cymbellales (792)
- Family Anomoeoneidaceae D.G. Mann, 1990 (16)
- Family Cymbellaceae Greville, 1833 (423)
- Genus Alveocymba Kapustin, Kulikovskiy & Kociolek in Kapustin et al., 2020 (1)
- Genus Brebissonia A. Grunow, 1860
- Genus Celebesia D. Kapustin, Kulikovskiy & Kociolek, 2017 (1)
- Genus Cymbella C.A. Agardh, 1830 (78)
- Genus Cymbellafalsa H. Lange-Bertalot & D. Metzeltin in D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Genus Cymbopleura (K. Krammer) K. Krammer in Lange-Bertalot & Genkal, 1999 (24)
- Genus Cymbopleura (K. Krammer) K. Krammer, 1997 accepted as Cymbopleura (K. Krammer) K. Krammer in Lange-Bertalot & Genkal, 1999
- Genus Delicata K. Krammer, 2003 accepted as Delicatophycus M.J.Wynne, 2019 (16)
- Genus Delicatophycus M.J.Wynne, 2019 (9)
- Genus Didymosphenia M. Schmidt in A. Schmidt et al., 1899 (1)
- Genus Encyonema Kütz., 1833 (51)
- Genus Encyonopsis K. Krammer, 1997 (144)
- Genus Gomphocymbellopsis K. Krammer, 2003 (1)
- Genus Karthickia Kociolek, Glushchenko & Kulikovskiy, 2019 (1)
- Genus Khursevichia Kulikovskiy, Lange-Bertalot & Metzeltin, 2012 (3)
- Genus Kurtkrammeria L.Bahls, 2015 (16)
- Genus Navicella K. Krammer, 1997
- Genus Navicymbula K. Krammer, 2003 (1)
- Genus Ochigma Kulikovskiy, Lange-Bertalot & Metzeltin, 2012 (3)
- Genus Oricymba I. Jüttner, K, Krammer, E.J. Cox, B. Van de Vijver & A. Tuji in Jüttner et al., 2010 (8)
- Genus Paraplaconeis Kulikovskiy, Lange-Bertalot & Metzeltin, 2012 (6)
- Genus Placoneis C. Mereschkowsky, 1903 (39)
- Species Placoneis abiskoensis (Hustedt) Lange-Bertalot & D.Metzeltin, 1996
- Species Placoneis abundans Metzeltin, Lange-Bertalot & García-Rodríguez, 2005
- Species Placoneis amphibola (Cleve) E.J.Cox, 2003 accepted as Navicula amphibola f. amphibola Cleve, 1891
- Species Placoneis anglica (Ralfs) R.Lowe, 2004 accepted as Navicula anglica f. anglica Ralfs in Pritchard, 1861
- Species Placoneis anglophila (Lange-Bertalot) Lange-Bertalot, 2005 accepted as Witkowskia anglophila (Lange-Bertalot) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis antediluvianum (Hustedt) Lange-Bertalot, 2005 † accepted as Witkowskia antediluviana (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024 †
- Species Placoneis apicalicostata D. Metzeltin & H. Lange-Bertalot, 2002
- Species Placoneis apiculata (Skabitschewsky, 1936) Kulikovskiy, Lange-Bertalot, Khursevich & Witkowski, 2015
- Species Placoneis australis Van de Vijver & Zidarova in Zidarova et al., 2009
- Species Placoneis balcanica (Hustedt) H. Lange-Bertalot, D. Metzeltin & Levkov in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis bicapitata Heinzerling, 1908
- Species Placoneis bicuneus D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis boris-skvortzowii D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
- Species Placoneis bukhchuluunae D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Species Placoneis centropunctata (Hustedt) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula centropunctata Hustedt, 1966
- Species Placoneis chilensis H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
- Species Placoneis clementioides (Hustedt) E.J.Cox, 1988 accepted as Navicula clementioides Hustedt, 1944
- Species Placoneis clementis (Grunow) E.J.Cox, 1987
- Species Placoneis clementispronina Lange-Bertalot & Wojtal, 2014
- Species Placoneis cocquytiae C.A.K.Fofana, E.H.Sow, J.Taylor, L.Ector & B.van de Vijver, 2014
- Species Placoneis coloradensis J.P.Kociolek & E.W. Thomas, 2010
- Species Placoneis constans (Hustedt) E.J. Cox, 2003 accepted as Navicula constans var. constans Hustedt, 1944
- Species Placoneis conveniens (Hustedt) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula conveniens Hustedt, 1952
- Species Placoneis coxia J.P. Kociolek & E.W. Thomas, 2010
- Species Placoneis coxiae J.P.Kociolek & E.W. Thomas, 2010
- Species Placoneis cuneata (M.Möller ex Foged) M.Potapova, 2014
- Species Placoneis dacostae Metzeltin & Lange-Bertalot, 1998
- Species Placoneis demeraroides (Hustedt) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula demeraroides Hustedt, 1966
- Species Placoneis densa (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia densa (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis dicephala (W.Smith) Meresch.
- Species Placoneis disparilis (Hustedt) D.Metzeltin & Lange-Bertalot, 1998 accepted as Navicula disparilis var. disparilis Hustedt, 1966
- Species Placoneis eldinensis accepted as Placoneis elginensis (Gregory) E.J.Cox, 1988
- Species Placoneis elegans D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis elegantula D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis elginensis (Gregory) E.J.Cox, 1988 accepted as Pinnularia elginensis Gregory, 1856
- Species Placoneis elliptica (Hustedt) T. Ohtsuka, 2002 accepted as Navicula exigua var. elliptica Hustedt, 1927
- Species Placoneis ellipticorostrata D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Species Placoneis exigua (Gregory) Mereschkovsky, 1903 accepted as Pinnularia exigua W.Gregory, 1854 †
- Species Placoneis exiguiformis (Hustedt) Lange-Bertalot, 2005 accepted as Witkowskia exiguiformis (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis exiguioides (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia exiguioides (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis explanata (Hustedt) Lange-Bertalot, 2000 accepted as Navicula explanata Hustedt, 1948
- Species Placoneis fourtanierae J.P. Kociolek & E.W. Thomas, 2010
- Species Placoneis gastriformis (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia gastriformis (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis gastrum (Ehrenberg) Mereschkovsky, 1903
- Species Placoneis gelegma M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis gracilis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis habita (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia habita (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis hambergii (Hustedt) K.Bruder, 2007 accepted as Navicula hambergi Hustedt, 1924
- Species Placoneis humilis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis ignorata (Schimanski) Lange-Bertalot, 2000 accepted as Navicula ignorata Schimanski, 1978
- Species Placoneis inexplorata (Krasske) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia inexplorata (Krasske) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis insignita (Hustedt) E.J.Cox, 2003 accepted as Navicula insignita f. insignita Hustedt, 1942
- Species Placoneis integra (W.Smith) Mereschkowsky, 1903
- Species Placoneis interglacialis (Hustedt) E.J. Cox, 2003 accepted as Navicula interglacialis Hustedt, 1944
- Species Placoneis itamoemae A.Straube, P.Tremarin & T.Ludwig, 2013
- Species Placoneis japonica (H. Kobayasi) H. Kobayasi in S. Mayama & A. Kawashima, 1998 accepted as Stauroneis japonica Kobayasi ex Kobayasi & Mayama, 1986
- Species Placoneis jatobensis (Krasske) D.Metzeltin & Lange-Bertalot
- Variety Placoneis jatobensis var. capitata (Krasske) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula jatobensis var. capitata Krasske, 1951
- Variety Placoneis jatobensis var. jatobensis (Krasske) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula jatobensis var. jatobensis Krasske, 1951
- Species Placoneis jurilijii A. Miho & H. Lange-Bertalot
- Species Placoneis juriljii A.Miho & Lange-Bertalot, 2006
- Species Placoneis lata (M.Peragallo) R.Lowe, 2004 accepted as Navicula dicephala var. lata M.Peragallo, 1908
- Species Placoneis laticuneata M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis likhoshwayae D.Metzeltin, M.S.Kulikovskiy & H.Lange-Bertalot, 2012
- Species Placoneis lundstroemii (Cleve) Mereschkowsky, 1903 accepted as Cosmioneis lundstroemii (Cleve) D.G.Mann, 1990
- Species Placoneis macedonica Z.Levkov & D.Metzeltin, 2007
- Species Placoneis maculata (Hustedt) Z.Levkov, 2007 accepted as Navicula placentula var. maculata Hustedt, 1945
- Species Placoneis madagascariensis H. Lange-Bertalot & D. Metzeltin in D. Metzeltin & H. Lange-Bertalot, 2002
- Species Placoneis maior M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis margaritae M.S.Kulikovskiy & H.Lange-Bertalot, 2012
- Species Placoneis merinensis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis minor (Grunow) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Paraplaconeis minor (Grunow) Lange-Bertalot, 2017
- Species Placoneis miseranda M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis molesta Metzeltin & Lange-Bertalot, 1998
- Species Placoneis molestissima D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis mologaensis Vishnyakov, 2020
- Species Placoneis mutica (Kützing) Mereschkowsky, 1903 accepted as Luticola mutica (Kützing) D.G.Mann, 1990
- Species Placoneis nanoclementis Lange-Bertalot & Wojtal, 2014
- Species Placoneis navicularis (Ehrenberg) E.J.Cox, 2003 accepted as Amphiprora navicularis Ehrenberg, 1843
- Species Placoneis neglecta R.Lowe, 2004
- Species Placoneis neglecta A.Tuji, 2003
- Species Placoneis neoexigua Lange-Bertalot & Miho, 2006
- Species Placoneis neotropica Metzeltin & Lange-Bertalot, 1998
- Species Placoneis ohridana Z.Levkov & D.Metzeltin, 2007
- Species Placoneis ovillus D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis paraelginensis Lange-Bertalot, 2000
- Species Placoneis paraundulata T. Ohtsuka, 2002
- Species Placoneis parazula M.S.Kulikovskiy & H.Lange-Bertalot, 2012
- Species Placoneis parunculus (Hustedt) H. Lange-Bertalot & D. Metzeltin in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia parunculus (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis parvapolonica Lange-Bertalot & Wojtal, 2014
- Species Placoneis patagonica Maidana in Maidana et al., 2017
- Species Placoneis pellaifa H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
- Species Placoneis perelginensis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis placentula (Ehrenberg) Mereschkowsky, 1903
- Species Placoneis placentula Heinzerling, 1908
- Species Placoneis porifera (Hustedt) T.Ohtsuka & Y.Fujita
- Species Placoneis potapovae (Moghadam) Kociolek in Kociolek et al., 2014
- Species Placoneis prespanensis Z.Levkov, S.Krstic & T.Nakov, 2007
- Species Placoneis protracta (Grunow) Mereschkowsky, 1903 accepted as Navicula protracta (Grunow) Cleve, 1894
- Species Placoneis pseudabundans Z.Levkov, 2011
- Species Placoneis pseudanglica E.J.Cox, 1987
- Species Placoneis pseudoclementis (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia pseudoclementis (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis pseudodemerarae (Hustedt) Metzeltin & Lange-Bertalot, 1998
- Species Placoneis pseudolacustris (Skabitschewsky, 1936) Kulikovskiy, Lange-Bert. & Khursevich, 2015
- Species Placoneis pseudoporifera (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia pseudoporifera (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis reimeri J.P.Kociolek & E.W.Thomas, 2010
- Species Placoneis reversa (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis rhombelliptica D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis rhombica (Brockmann) Lange-Bertalot, 2005 accepted as Navicula clementis var. rhombica Brockmann, 1950
- Species Placoneis rostrata (A.Mayer) E.J.Cox, 2003 accepted as Navicula dicephala var. rostrata A.Mayer, 1917
- Species Placoneis ruppeliana M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis santaremensis Metzeltin & Lange-Bertalot, 1998
- Species Placoneis scharfii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
- Species Placoneis serena (Frenguelli) D. Metzeltin in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia serena (Frenguelli) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis signata (Hustedt) A. Mayama in S. Mayama & A. Kawashima, 1998 accepted as Navicula gastrum var. signata Hustedt, 1936
- Species Placoneis signatoides D.Metzeltin & Z.Levkov, 2007
- Species Placoneis significans (Hustedt) Lange-Bertalot, 2005 accepted as Witkowskia hustedtii (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis sinensis Y.Li & D.Metzeltin, 2013 †
- Species Placoneis sovereignae (Hustedt) Torgan & Donadel, 2010 accepted as Navicula sovereignae Hustedt, 1955
- Species Placoneis spinosa M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Species Placoneis subclementis (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia subclementis (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis subelegans Z.Levkov, 2011
- Species Placoneis subgastriformis (Hustedt) E.J. Cox, 2003 accepted as Navicula subgastriformis Hustedt, 1945
- Species Placoneis subinflata (Grunow) Mereschowsky, 1903 accepted as Dickieia subinflata (Grunow) D.G.Mann, 1994
- Species Placoneis subplacentula (Hustedt) E.J. Cox, 2003 accepted as Navicula subplacentula var. subplacentula Hustedt in Schmidt et al., 1930
- Species Placoneis subsalsa
- Species Placoneis subtilis M.S.Kulikovskiy & H.Lange-Bertalot, 2012
- Species Placoneis surinamensis (Cleve) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula surinamensis Cleve, 1895
- Species Placoneis symmetrica (Hustedt) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 accepted as Witkowskia symmetrica (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis tersa (Hustedt) Metzeltin & Lange-Bertalot, 1998 accepted as Navicula tersa Hustedt, 1956
- Species Placoneis tsendeekhuui D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009
- Species Placoneis tumidula Z.Levkov, 2007
- Species Placoneis undulata (Østrup) Lange-Bertalot accepted as Navicula dicephala f. undulata Østrup, 1918 (1920)
- Species Placoneis uruguayensis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis vicina (Hustedt) Metzeltin & Lange-Bertalot, 1998 accepted as Witkowskia vicina (Hustedt) Kulikovskiy, Glushchenko, Mironov & Kociolek, 2024
- Species Placoneis waernensis (Foged) H. Lange-Bertalot & D. Metzeltin in D. Metzeltin, H. Lange-Bertalot & S. Nergui, 2009 accepted as Navicula waernensis Foged, 1964
- Species Placoneis witkowskii D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
- Species Placoneis yacatanensis D. Metzeltin & H. Lange-Bertalot, 2007
- Species Placoneis yucatanensis Lange-Bertalot, 2007
- Species Placoneis zimmermannii Metzeltin & Lange-Bertalot, 1998
- Species Placoneis zula M.S.Kulikovskiy, H.Lange-Bertalot & D.Metzeltin, 2012
- Genus Pseudencyonema K. Krammer, 1997
- Genus Pseudocymbopleura Pomazkina & Rodionova, 2014 (1)
- Genus Vladinikolaevia Kulikovskiy, Glushchenko, Y. Liu & Kociolek in Kulikovskiy et al., 2022 (1)
- Genus Witkowskia Kulikovskiy, Mironov, Glushchenko & Kociolek, 2024 (15)
- Genus Yasnitskya Rodionova & Pomazkina, 2014 (3)
- Family Cymbellales incertae sedis (3)
- Family Gomphonemataceae Kützing, 1844 (320)
- Family Rhoicospheniaceae Chen & Zhu, 1983 (30)
- Order Dictyoneidales
- Order Lyrellales (15)
- Order Mastogloiales (88)
- Order Naviculales (2 077)
- Order Rhopalodiales (37)
- Order Surirellales (174)
- Order Thalassiophysales (105)
- Superorder Bacillariophycidae incertae sedis (32)
- Superorder Eunotiophycanae (293)
- Subclass Coscinodiscophycidae (877)
- Subclass Fragilariophycidae (483)
- Order Centrales
