DiatomBase
Between brackets is the number of accepted extant species
Click on "-" to collapse/hide all child taxa
Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
Click on "+" to expand/show all child taxa
Click to see the taxon details page
- Bacillariophyceae (5 957)
- Subclass Bacillariophyceae incertae sedis (189)
- Subclass Bacillariophycidae (4 408)
- Subclass Coscinodiscophycidae (877)
- Subclass Fragilariophycidae (483)
- Superorder Fragilariophycanae (483)
- Order Ardissoneales (1)
- Order Climacospheniales (2)
- Order Cyclophorales (8)
- Order Fragilariales (377)
- Order Licmophorales (49)
- Order Protoraphidales (1)
- Order Rhabdonematales (3)
- Order Rhaphoneidales
- Order Striatellales (15)
- Order Tabellariales (16)
- Family Tabellariaceae Kützing, 1844 (16)
- Genus Oxyneis F.E. Round in F.E. Round, R.M. Crawford & D.G. Mann, 1990 (2)
- Genus Tabellaria C.G. Ehrenberg ex F.T. Kützing, 1844 (4)
- Genus Tetracyclus J. Ralfs, 1843 (10)
- Species Tetracyclus arceli D.M. Williams, G.K. Khursevich & R.J. Flower in Williams, Khursevich, Fedenya & Flower, 2006
- Species Tetracyclus baicalensis (Skvortzov in Skvortzov & Meyer)Skvortzov in Meyer
- Species Tetracyclus boryanus
- Species Tetracyclus braunii Grunow, 1862
- Species Tetracyclus calceus K.E. Lohman, 1957
- Species Tetracyclus castellum (Ehrenberg) Grunow, 1862
- Species Tetracyclus celatom Okuno, 1958 †
- Species Tetracyclus chankaicus Y.Dubrovina, M.Usoltseva, V.Pushkar & O.Likhacheva, 2013 †
- Species Tetracyclus chilensis (Ehrenberg) De Toni, 1892 accepted as Biblarium chilense Ehrenberg, 1854
- Species Tetracyclus chudjakovii Pushkar, 1983
- Species Tetracyclus circularis Jousé, 1952
- Species Tetracyclus circularis K.E. Lohman, 1957
- Species Tetracyclus circulus Jousé, 1952
- Species Tetracyclus clypeus (Ehrenberg) Li, 1982
- Species Tetracyclus clypeus (Ehrenberg) K.E. Lohman, 1957 accepted as Stylobiblium clypeus Ehrenberg, 1845 †
- Species Tetracyclus compressus (Ehrenberg; Ehrenberg) M. Peragallo in Héribaud, 1893 accepted as Biblarium compressum Ehrenberg, 1845
- Species Tetracyclus constrictus (Ehrenberg) De Toni, 1892 accepted as Biblarium constrictum Ehrenberg, 1854
- Species Tetracyclus constrictus M. Peragallo in Tempère & Peragallo, 1912
- Species Tetracyclus constrictus (Hustedt) K.E. Lohman, 1957 accepted as Tetracyclus ellipticus f. constricta Hustedt, 1914
- Species Tetracyclus costellatus
- Species Tetracyclus cruciformis Andrews, 1970
- Species Tetracyclus crux (Ehrenberg; Ehrenberg) Ralfs in Pritchard, 1861 accepted as Biblarium crux (Ehrenberg) Ehrenberg, 1854
- Species Tetracyclus decoratus Brun & Héribaud in Héribaud, 1893
- Species Tetracyclus divisum (Ehrenberg) Li, 1982 accepted as Stylobiblium divisum Ehrenberg, 1845 †
- Species Tetracyclus dunhuanensis Li, 1984
- Species Tetracyclus duplus K.E. Lohman, 1957
- Species Tetracyclus eckhardti (Ehrenberg) Hustedt, 1914
- Species Tetracyclus eckhardtii (Ehrenberg)
- Species Tetracyclus elegans
- Species Tetracyclus ellipticus (Ehrenberg) Grunow, 1862
- Variety Tetracyclus ellipticus var. austrochinensis Zhang, 1994
- Variety Tetracyclus ellipticus var. clypeus (Ehrenberg) Hustedt in Schmidt et al., 1912 accepted as Stylobiblium clypeus Ehrenberg, 1845 †
- Variety Tetracyclus ellipticus var. compressus (Ehrenberg; Ehrenberg) Hustedt, 1914 (1915) accepted as Biblarium compressum Ehrenberg, 1845
- Variety Tetracyclus ellipticus var. inflata Hustedt in Schmidt et al., 1912
- Variety Tetracyclus ellipticus var. linearis (Ehrenberg) Hustedt, 1912
- Variety Tetracyclus ellipticus var. minutissima Héribaud & M. Peragallo in Héribaud, 1902
- Variety Tetracyclus ellipticus var. ovalifolius Li, 1984
- Variety Tetracyclus ellipticus var. penzhicus Lupikina & Dolmatova, 1985
- Variety Tetracyclus ellipticus var. rostrata Li, 1984
- Forma Tetracyclus ellipticus f. apiculata Okuno, 1959
- Forma Tetracyclus ellipticus f. apiculata Okuno, 1959
- Forma Tetracyclus ellipticus f. chilensis Krasske, 1939 accepted as Tetracyclus krasskei D.M.Williams, 2014
- Forma Tetracyclus ellipticus f. constricta Hustedt, 1914
- Forma Tetracyclus ellipticus f. ellipticus (Ehrenberg; Ehrenberg) Grunow, 1862 accepted as Biblarium ellipticum Ehrenberg, 1845
- Forma Tetracyclus ellipticus f. elongata Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. elongata Hustedt, 1914
- Forma Tetracyclus ellipticus f. lamina (Ehrenberg) M. Peragallo, 1903 accepted as Biblarium lamina Ehrenberg, 1845
- Forma Tetracyclus ellipticus f. lancea (Ehrenberg; Ehrenberg) Hustedt in Schmidt et al., 1912 accepted as Biblarium lancea Ehrenberg, 1845
- Forma Tetracyclus ellipticus f. lata (Tempère & Peragallo) F.W. Mills, 1935
- Forma Tetracyclus ellipticus f. lata Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. lata Hustedt, 1914
- Forma Tetracyclus ellipticus f. latissima Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. major Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. minor (Hustedt in Schmidt et al.)
- Forma Tetracyclus ellipticus f. minor Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. minor Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. producta (Tempère & Peragallo)
- Forma Tetracyclus ellipticus f. subrostrata Hustedt in Schmidt et al., 1912
- Forma Tetracyclus ellipticus f. subrostrata Hustedt, 1914
- Species Tetracyclus emarginatus (Ehrenberg) W.Smith, 1856
- Species Tetracyclus excentricum (Ehrenberg) Williams, 1989 accepted as Stylobiblium excentricum Ehrenberg, 1845 †
- Species Tetracyclus floriformis Tscheremissionva, 1971
- Species Tetracyclus gibbus (Ehrenberg) De Toni, 1892 accepted as Biblarium gibbum Ehrenberg, 1844
- Species Tetracyclus glans (Ehrenberg) Mills, 1935
- Species Tetracyclus hinziae Bishop & Spaulding, 2015
- Species Tetracyclus horus K.E. Lohman, 1957
- Species Tetracyclus irregularis K.E. Lohman, 1957
- Species Tetracyclus islandicus Østrup, 1900
- Species Tetracyclus jaoi Li, 1984
- Species Tetracyclus japonicus (Petit) Tempère & H.Peragallo, 1909 accepted as Stylobiblium japonicum Petit, 1890 †
- Species Tetracyclus javanicus Hustedt, 1931
- Species Tetracyclus jiayingii D.M.Williams, 2008 †
- Species Tetracyclus jimboi (Pantocsek) Jousé, 1952
- Species Tetracyclus kingstonii D.M.Williams, 2008 †
- Species Tetracyclus krasskei D.M.Williams, 2014
- Species Tetracyclus lacustris Ralfs, 1843
- Species Tetracyclus lacustris (Skvortzow) Skabichevskii, 1977 accepted as Tetracyclus lacustris var. baicalensis Skvortzow & Meyer, 1928
- Species Tetracyclus lamina
- Species Tetracyclus lancea (Ehrenberg; Ehrenberg) M. Peragallo in Héribaud, 1893 accepted as Biblarium lancea Ehrenberg, 1845
- Species Tetracyclus lapponicus Tynni, 1982
- Species Tetracyclus lata (Hustedt) Williams, 1996
- Species Tetracyclus lewisianus Østrup, 1910
- Species Tetracyclus libyca (Ehrenberg; Ehrenberg)
- Species Tetracyclus linearis (Ehrenberg; Ehrenberg) Grunow, 1862 accepted as Biblarium lineare Ehrenberg, 1845
- Species Tetracyclus major
- Species Tetracyclus maxima Williams, 1996
- Species Tetracyclus maximumcostata D.M. Williams, G.K. Khursevich & R.J. Flower in Williams, Khursevich, Fedenya & Flower, 2006
- Species Tetracyclus navicularis Li, 1984
- Species Tetracyclus ovalifolius (J. Y. Li) Williams, 1996 accepted as Tetracyclus ellipticus var. ovalifolius Li, 1984
- Species Tetracyclus ovaliformis Li, 1984
- Species Tetracyclus pagesi Héribaud, 1902
- Species Tetracyclus parallelus K.E. Lohman, 1957
- Species Tetracyclus peragalli Héribaud-Joseph
- Species Tetracyclus polygibbum (Pantocsek) Jousé, 1952 accepted as Stylobiblium polygibbum Pantocsek, 1892 †
- Species Tetracyclus pseudocastellum D.M.Williams, 1997 †
- Species Tetracyclus quadrus K.E. Lohman, 1957
- Species Tetracyclus radiatus K.E. Lohman, 1957
- Species Tetracyclus radius M. Saito-Kato, T. Hayashi & Y. Tanimura, 2011
- Species Tetracyclus rhombus (Ehrenberg) Ralfs
- Species Tetracyclus rostratus Hustedt in Schmidt et al., 1913
- Species Tetracyclus rupestris (Kützing) Grunow, 1881
- Species Tetracyclus rupestris (Braun ex Rabenhorst) Grunow in Van Heurck, 1885 accepted as Gomphogramma rupestre (Kützing) Braun in Rabenhorst, 1853
- Species Tetracyclus shanduensis Li, 1984
- Species Tetracyclus sinensis Li, 1984
- Species Tetracyclus stella (Ehrenberg) Héribaud, 1902 accepted as Tetracyclus lacustris Ralfs, 1843
- Species Tetracyclus stellare
- Species Tetracyclus stellaris
- Species Tetracyclus strumosus (Ehrenberg) D.W. Williams accepted as Biblarium strumosum Ehrenberg, 1854
- Species Tetracyclus subclypeus Li & Williams in Williams & Li, 1990
- Species Tetracyclus subdivisium Williams & Li, 1990
- Species Tetracyclus subrostrata D.M. Williams
- Species Tetracyclus subrostratus D.M.Williams, 2008 †
- Species Tetracyclus tripartitus
- Species Tetracyclus tscheremissinovae D. M. Williams & G. Reid in Reid, G., Flower, R. & Votyakova, N.E., 2002
- Species Tetracyclus virginicus K.E. Lohman, 1957
- Order Thalassionematales (10)
- Order Toxariales (1)
- Order Centrales
