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DiatomBase taxon details

Gomphonema C.G. Ehrenberg, 1832

AphiaID

149553 (urn:lsid:marinespecies.org:taxname:149553)

Classification

Status

accepted

Rank

Genus

Parent

Gomphonemataceae Kützing, 1844

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Species Gomphonema acceptatum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema acuminatum Ehrenberg, 1832
1. Subspecies Gomphonema acuminatum subsp. turris (Ehrenberg) Cleve
2. Variety Gomphonema acuminatum var. cryptoacuminatum N.Abarca & R.Jahn in Abarca et al., 2020
3. Variety Gomphonema acuminatum var. ellongatum (W.Sm.) Carr in J.E. Gray, 1864
4. Variety Gomphonema acuminatum var. longiceps (Ehrenb.) N.Abarca & R.Jahn
5. Variety Gomphonema acuminatum var. longiceps (Ehrenberg) N.Abarca & R.Jahn in Abarca et al., 2020
6. Variety Gomphonema acuminatum var. obtusum Fan & Bao, 2004
7. Variety Gomphonema acuminatum var. pusillum Grunow, 1880
8. Variety Gomphonema acuminatum var. scardicum (Mitić- Kopanja, C.E.Wetzel, Ector & Levkov) N.Abarca & R.Jahn,
9. Variety Gomphonema acuminatum var. scardicum (Mitić- Kopanja, C.E.Wetzel, Ector & Levkov) N.Abarca & R.Jahn in Abarca et al. 2020
10. Variety Gomphonema acuminatum var. spoliata Frenguelli, 1942
11. Variety Gomphonema acuminatum var. trigonocephalum (Ehrenberg) Grunow
12. Variety Gomphonema acuminatum var. coronatum (Ehrenberg) Ehrenberg, 1864 accepted as Gomphonema coronatum Ehrenberg, 1840
13. Variety Gomphonema acuminatum var. trigonum Swirenko, 1941 accepted as Gomphonema acuminatum var. trigonocephalum (Ehrenberg) Grunow (Mistaken Name)
14. Forma Gomphonema acuminatum f. acuminatoides Mayer, 1928 (uncertain > unassessed)
15. Forma Gomphonema acuminatum f. acuminatum Ehrenberg, 1832 (uncertain > unassessed)
16. Forma Gomphonema acuminatum f. brebissoniformis Mayer, 1928 (uncertain > unassessed)
17. Forma Gomphonema acuminatum f. brebissonii (Kützing) Cleve, 1894 accepted as Gomphonema brebissonii Kützing, 1849 (uncertain > unassessed)
18. Forma Gomphonema acuminatum f. brebissonii Heiden in Heiden & Kolbe, 1928 (uncertain > unassessed)
19. Forma Gomphonema acuminatum f. coronata (Ehrenberg) Cleve, 1894 (uncertain > unassessed)
20. Forma Gomphonema acuminatum f. coronatum (Ehrenberg; Kutzing) W. Smith, 1853 (uncertain > unassessed)
21. Forma Gomphonema acuminatum f. curta Cleve-Euler, 1932 (uncertain > unassessed)
22. Forma Gomphonema acuminatum f. curta F.W. Mills, 1934 (uncertain > unassessed)
23. Forma Gomphonema acuminatum f. curta Mayer, 1916 (1917) (uncertain > unassessed)
24. Forma Gomphonema acuminatum f. dippelii Woodhead & Tweed, 1960 (uncertain > unassessed)
25. Forma Gomphonema acuminatum f. elongatum (W. Smith; W. Smith) Rabenhorst, 1864 accepted as Gomphonema elongatum var. elongatum W. Smith, 1855 (uncertain > unassessed)
26. Forma Gomphonema acuminatum f. elongatum (W. Smith) Skvortzow, 1929 (uncertain > unassessed)
27. Forma Gomphonema acuminatum f. hastata A. Cleve, 1895 (uncertain > unassessed)
28. Forma Gomphonema acuminatum f. intermedia Dippel, 1905 (uncertain > unassessed)
29. Forma Gomphonema acuminatum f. laticeps (Ehrenberg) L.Dippel, 1905 accepted as Gomphonema laticeps Ehrenberg, 1843 (uncertain > unassessed)
30. Forma Gomphonema acuminatum f. malayensis Hustedt, 1942 (uncertain > unassessed)
31. Forma Gomphonema acuminatum f. pantocsekii Cleve-Euler, 1932 (uncertain > unassessed)
32. Forma Gomphonema acuminatum f. pusilla (Grunow in Van Heurck) Cleve, 1894 accepted as Gomphonema acuminatum var. pusilla Grunow in Van Heurck, 1880 (uncertain > unassessed)
33. Forma Gomphonema acuminatum f. rectangulata Holmboe, 1899 (uncertain > unassessed)
34. Forma Gomphonema acuminatum f. rostrata Lauby, 1910 (uncertain > unassessed)
35. Forma Gomphonema acuminatum f. tenuis (Cleve-Euler) Cleve-Euler, 1955 accepted as Gomphonema elongatum var. tenuis Cleve-Euler, 1932 (uncertain > unassessed)
36. Forma Gomphonema acuminatum f. trigonocephala (Ehrenberg) Grunow in Van Heurck, 1880 accepted as Gomphonema trigonocephalum Ehrenberg, 1854 (uncertain > unassessed)
37. Forma Gomphonema acuminatum f. trigonocephala (Ehrenberg) Cleve, 1894 (uncertain > unassessed)
38. Forma Gomphonema acuminatum f. turris Ehrenberg, 1841 (1843) (uncertain > unassessed)
39. Forma Gomphonema acuminatum f. typica (Ehrenberg) Mayer, 1928 accepted as Gomphonema trigonocephalum Ehrenberg, 1854 (uncertain > unassessed)
40. Forma Gomphonema acuminatum f. typica Cleve-Euler, 1955 (uncertain > unassessed)
41. Variety Gomphonema acuminatum var. acuminatotruncatum Filarszki, 1899 (1901) (uncertain > unassessed)
42. Variety Gomphonema acuminatum var. acuminatum Holmboe, 1900 (uncertain > unassessed)
43. Variety Gomphonema acuminatum var. acuminatum auct. non Grunow (uncertain > unassessed)
44. Variety Gomphonema acuminatum var. americanum (Ehrenberg) Nylander, 1861 accepted as Gomphonema americanum Ehrenberg, 1840 (uncertain > unassessed)
45. Variety Gomphonema acuminatum var. beta Smith (uncertain > unassessed)
46. Variety Gomphonema acuminatum var. biconstricta Fontell, 1917 (uncertain > unassessed)
47. Variety Gomphonema acuminatum var. biventralis (Heribaud & M. Peragallo in Heribaud) VanLandingham, 1971 accepted as Gomphonema biventralis Héribaud & M. Peragallo in Héribaud, 1902 (uncertain > unassessed)
48. Variety Gomphonema acuminatum var. brasiliensis Fricke in Schmidt et al., 1902 (uncertain > unassessed)
49. Variety Gomphonema acuminatum var. brebissonii (Kützing) Grunow, 1880 accepted as Gomphonema brebissonii Kützing, 1849 (uncertain > unassessed)
50. Variety Gomphonema acuminatum var. capitatum (Ehrenberg) W.Carruthers (uncertain > unassessed)
51. Variety Gomphonema acuminatum var. clavus (Brébisson) Grunow, 1880 accepted as Gomphonema clavus L.A.Brébisson, 1835 (uncertain > unassessed)
52. Variety Gomphonema acuminatum var. constrictum Akimova, 1930 (uncertain > unassessed)
53. Variety Gomphonema acuminatum var. constrictum (Kützing) W.Carruthers, 1864 (uncertain > unassessed)
54. Variety Gomphonema acuminatum var. coronatum (Ehrenberg) Rabenhorst, 1864 accepted as Gomphonema coronatum Ehrenberg, 1840 (uncertain > unassessed)
55. Variety Gomphonema acuminatum var. cuneatum Carruthers, 1864 (uncertain > unassessed)
56. Variety Gomphonema acuminatum var. curvatum Shirshov, 1937 (uncertain > unassessed)
57. Variety Gomphonema acuminatum var. directa Cleve-Euler, 1932 (uncertain > unassessed)
58. Variety Gomphonema acuminatum var. elongatum (W.Smith) G.L.Rabenhorst, 1864 accepted as Gomphonema elongatum var. elongatum W. Smith, 1855 (uncertain > unassessed)
59. Variety Gomphonema acuminatum var. fusticulus (Smith) Carruthers, 1864 accepted as Gomphonema fusticulus W.Smith (uncertain > unassessed)
60. Variety Gomphonema acuminatum var. gamma W. Smith, 1853 (uncertain > unassessed)
61. Variety Gomphonema acuminatum var. genuina Mayer, 1913 (uncertain > unassessed)
62. Variety Gomphonema acuminatum var. gigantea Héribaud & M. Peragallo in Héribaud, 1902 (uncertain > unassessed)
63. Variety Gomphonema acuminatum var. hastata (A. Cleve) F.W. Mills, 1934 accepted as Gomphonema acuminatum f. hastata A. Cleve, 1895 (uncertain > unassessed)
64. Variety Gomphonema acuminatum var. hybrida Cleve-Euler, 1939 (uncertain > unassessed)
65. Variety Gomphonema acuminatum var. intermedia Grunow, 1881 (uncertain > unassessed)
66. Variety Gomphonema acuminatum var. intermedia (Dippel) Mayer, 1913 (uncertain > unassessed)
67. Variety Gomphonema acuminatum var. laticeps (Ehrenberg) Grunow, 1880 accepted as Gomphonema laticeps Ehrenberg, 1843 (uncertain > unassessed)
68. Variety Gomphonema acuminatum var. laticeps Truan y Luard, 1884 (uncertain > unassessed)
69. Variety Gomphonema acuminatum var. lineare Carruthers, 1864 (uncertain > unassessed)
70. Variety Gomphonema acuminatum var. minutissima Héribaud, 1908 (uncertain > unassessed)
71. Variety Gomphonema acuminatum var. montanum J.Schumann, 1867 (uncertain > unassessed)
72. Variety Gomphonema acuminatum var. mustela (Ehrenberg) Nylander, 1861 accepted as Gomphonema mustela f. mustela Ehrenberg, 1854 (uncertain > unassessed)
73. Variety Gomphonema acuminatum var. nasuta (Ehrenberg) Prochazka, 1923 accepted as Gomphonema nasutum Ehrenberg, 1843 (uncertain > unassessed)
74. Variety Gomphonema acuminatum var. nasutum (Ehrenberg) Schumann, 1862 accepted as Gomphonema nasutum Ehrenberg, 1843 (uncertain > unassessed)
75. Variety Gomphonema acuminatum var. pontina Zanon, 1928 (uncertain > unassessed)
76. Variety Gomphonema acuminatum var. pusilla Grunow in Van Heurck, 1880 (uncertain > unassessed)
77. Variety Gomphonema acuminatum var. sceptrum (Rabenhorst) Rabenhorst, 1864 accepted as Gomphonema sceptrum Rabenhorst, 1853 (uncertain > unassessed)
78. Variety Gomphonema acuminatum var. semiapertum (Grunow) De Toni, 1891 accepted as Gomphonema semiapertum var. semiapertum Grunow in Van Heurck, 1880 (uncertain > unassessed)
79. Variety Gomphonema acuminatum var. sinica Skvortzow, 1935 (uncertain > unassessed)
80. Variety Gomphonema acuminatum var. smithii Brügger, 1863 (uncertain > unassessed)
81. Variety Gomphonema acuminatum var. sphaerophora Stoermer & Kreis, 1978 (uncertain > unassessed)
82. Variety Gomphonema acuminatum var. submontanum Gutwinski, 1890 (uncertain > unassessed)
83. Variety Gomphonema acuminatum var. tibeticum Jao, 1964 (uncertain > unassessed)
84. Variety Gomphonema acuminatum var. turris (Ehrenberg) Wolle, 1890 accepted as Gomphonema turris f. turris Ehrenberg, 1843 (uncertain > unassessed)
85. Variety Gomphonema acuminatum var. turris sensu Boyer, 1916 (uncertain > unassessed)
86. Variety Gomphonema acuminatum var. vanheurckii (Pantocsek) Cleve-Euler, 1939 accepted as Gomphonema vanheurckii Pantocsek, 1902 (uncertain > unassessed)
Species Gomphonema adhikarii C.Radhakrishnan, Sudipta K.Das, Kociolek et B.Karthick in Radhakrishnan et al., 2020
Species Gomphonema affine Kützing, 1844
1. Variety Gomphonema affine var. affine
2. Forma Gomphonema affine f. affine Kützing, 1844 (uncertain > unassessed)
3. Forma Gomphonema affine f. lanceolatum (Manguin) Germain & Le Cohu, 1981 (uncertain > unassessed)
4. Forma Gomphonema affine f. major Grunow, 1880 (uncertain > unassessed)
5. Variety Gomphonema affine var. elongatum (Mayer) Millie & Lowe, 1981 accepted as Gomphonema insigne var. elongatum Mayer, 1928 (uncertain > unassessed)
6. Variety Gomphonema affine var. insigne (W.Gregory) G.W.Andrews, 1970 accepted as Gomphonema insigne Gregory, 1856 (uncertain > unassessed)
7. Variety Gomphonema affine var. insignis (Gregory) Andrews, 1970 (uncertain > unassessed)
8. Variety Gomphonema affine var. kerguelenense (Manguin) Germain & Le Cohu, 1981 (uncertain > unassessed)
9. Variety Gomphonema affine var. luminosa Lauby, 1910 (uncertain > unassessed)
10. Variety Gomphonema affine var. rhombicum E. Reichardt, 1999 (uncertain > unassessed)
Species Gomphonema africanum G.S.West, 1907
1. Forma Gomphonema africanum f. africanum G.S. West, 1907 (uncertain > unassessed)
2. Forma Gomphonema africanum f. turris Kufferath, 1956 (uncertain > unassessed)
Species Gomphonema alavariense C. Delgado, S. Blanco, L. Gonzalez-Paz & S.F.P. Almeida in Gonzalez-Paz et al., 2020
Species Gomphonema angkoricum Cejudo-Figueiras, S.Blanco & Ãlvarez-Blanco, 2012
Species Gomphonema angusticapitatum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema angusticlavatum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema angustissimum F.Hustedt
1. Variety Gomphonema angustissimum var. africanum Cholnoky, 1959 (uncertain > unassessed)
2. Variety Gomphonema angustissimum var. angustissimum Hustedt, 1942 (uncertain > unassessed)
Species Gomphonema angustum C.Agardh, 1831
1. Forma Gomphonema angustum f. angustum Agardh, 1831 (uncertain > unassessed)
2. Forma Gomphonema angustum f. minor Brun, 1901 (uncertain > unassessed)
3. Variety Gomphonema angustum var. lunatum (H.Germain) M.Aboal, 2003 accepted as Gomphonema intricatum var. lunata Germain, 1981 (uncertain > unassessed)
4. Variety Gomphonema angustum var. producta Grunow in Fricke in Schmidt, 1902 (uncertain > unassessed)
5. Variety Gomphonema angustum var. productum Hirn, 1899-1900 (uncertain > unassessed)
Species Gomphonema anjae Lange-Bertalot & Reichardt
Species Gomphonema asiaticum Liu & Kociolek, 2013
Species Gomphonema augur Ehrenberg, 1840
1. Variety Gomphonema augur var. augur Ehrenberg, 1840
2. Variety Gomphonema augur var. capitulata Frenguelli, 1923
3. Variety Gomphonema augur var. gauteri Van Heurck, 1885
4. Forma Gomphonema augur f. augur Ehrenberg, 1840 (uncertain > unassessed)
5. Forma Gomphonema augur f. elongata Skvortzov & Noda, 1971 (uncertain > unassessed)
6. Forma Gomphonema augur f. fossilis Manguin, 1952 (uncertain > unassessed)
7. Forma Gomphonema augur f. genuina Mayer, 1913 (uncertain > unassessed)
8. Forma Gomphonema augur f. hankensis Skvortzow, 1929 (uncertain > unassessed)
9. Forma Gomphonema augur f. major Rabenhorst, 1864 (uncertain > unassessed)
10. Forma Gomphonema augur f. orientalis Skvortzow, 1929 (uncertain > unassessed)
11. Forma Gomphonema augur f. pusilla Mayer, 1928 (uncertain > unassessed)
12. Forma Gomphonema augur f. typica Mayer, 1928 (uncertain > unassessed)
13. Variety Gomphonema augur var. angulatum Playfair, 1914 (uncertain > unassessed)
14. Variety Gomphonema augur var. crassa Stone in McLaughlin & Stone, 1986 (uncertain > unassessed)
15. Variety Gomphonema augur var. gautieri Van Heurck, 1885 (uncertain > unassessed)
16. Variety Gomphonema augur var. insigne Lak, 1954 (uncertain > unassessed)
17. Variety Gomphonema augur var. marisiensis Robert, 1962 (uncertain > unassessed)
18. Variety Gomphonema augur var. maxima Zanon, 1928 (uncertain > unassessed)
19. Variety Gomphonema augur var. nasutum (Ehrenberg) G.L.Rabenhorst, 1864 accepted as Gomphonema nasutum Ehrenberg, 1843 (uncertain > unassessed)
20. Variety Gomphonema augur var. okamurae Skvortzow, 1937 (uncertain > unassessed)
21. Variety Gomphonema augur var. podolicum Gutwinski, 1893 (uncertain > unassessed)
22. Variety Gomphonema augur var. poyangiana Skvortzov, 2012 (uncertain)
23. Variety Gomphonema augur var. rotundatum Playfair accepted as Gomphonema abbreviatum var. longipes Kützing, 1844 (uncertain > unassessed)
24. Variety Gomphonema augur var. sinica Skvortzow, 1946 (uncertain > unassessed)
25. Variety Gomphonema augur var. sphaerophorum (Ehrenberg) Grunow, 1878 accepted as Gomphonema sphaerophorum f. sphaerophorum Ehrenberg, 1845 (uncertain > unassessed)
26. Variety Gomphonema augur var. turris (Ehrenberg) Lange-Bertalot, 1985 accepted as Gomphonema turris f. turris Ehrenberg, 1843 (uncertain > unassessed)
Species Gomphonema auguriforme Levkov, Mitic-Kopanja, Wetzel & Ector in Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema auritum A.Braun ex Kützing, 1849
1. Forma Gomphonema auritum f. auritum Braun in litt., Kutzing, 1849 (uncertain > unassessed)
2. Forma Gomphonema auritum f. parva Cleve & Möller, 1879 (uncertain > unassessed)
3. Variety Gomphonema auritum var. gracile Kolodziejczyk, 1916 (uncertain > unassessed)
Species Gomphonema balatonis Pantocsek
1. Variety Gomphonema balatonis var. lanceolata Gandhi, 1960
2. Variety Gomphonema balatonis var. balatonis Pantocsek, 1902 (uncertain > unassessed)
Species Gomphonema berggreni
1. Variety Gomphonema berggreni var. densistriata Skvortzov & Noda, 1971 (uncertain > unassessed)
Species Gomphonema berggrenii Cleve
1. Variety Gomphonema berggrenii var. berggrenii Cleve, 1894 (uncertain > unassessed)
2. Variety Gomphonema berggrenii var. capitata Frenguelli, 1926 (uncertain > unassessed)
3. Variety Gomphonema berggrenii var. densestriata Skvortzov, 2012 (uncertain)
Species Gomphonema bergii Skvortzov & Meyer
1. Variety Gomphonema bergii var. bergii Skvortzow & Meyer, 1928 (uncertain > unassessed)
2. Variety Gomphonema bergii var. stauroneiforme Jasnitsky, 1936 (uncertain > unassessed)
Species Gomphonema bicepiformis Wei Zhang & Kociolek, 2018
Species Gomphonema bigutianchnensis Y.Li in Liao & Y.Li, 2018
Species Gomphonema bohemicum Reichelt & Fricke, 1902
Species Gomphonema boreale E.V.Østrup
1. Variety Gomphonema boreale var. boreale Østrup, 1910 (uncertain > unassessed)
2. Variety Gomphonema boreale var. minor Foged, 1953 (uncertain > unassessed)
Species Gomphonema brasiliensoide Metzeltin, Lange-Bertalot & García-Rodríguez, 2005
Species Gomphonema bukycanyona L.N.Bukhtiyarova, 2013
Species Gomphonema californicum Stancheva & Kociolek, 2016
Species Gomphonema candelariae Frenguelli, 1924
1. Variety Gomphonema candelariae var. lanceolata Frenguelli, 1934 †
2. Variety Gomphonema candelariae var. candelariae Frenguelli, 1924 (uncertain > unassessed)
3. Variety Gomphonema candelariae var. elliptica Frenguelli, 1924 (uncertain > unassessed)
4. Variety Gomphonema candelariae var. minor Frenguelli, 1924 (uncertain > unassessed)
Species Gomphonema cantalicum J.-J.Brun & Héribaud-Joseph
1. Forma Gomphonema cantalicum f. cantalicum Brun & Héribaud in Héribaud, 1893 (uncertain > unassessed)
2. Variety Gomphonema cantalicum var. costalonga Brun & Heribaud, 1893 (uncertain > unassessed)
3. Variety Gomphonema cantalicum var. lepida Héribaud-Joseph & M.Peragallo (uncertain > unassessed)
4. Variety Gomphonema cantalicum var. major (Brun & Héribaud in Héribaud) Cleve, 1894 (uncertain > unassessed)
Species Gomphonema capitatum Ehrenberg, 1838
1. Forma Gomphonema capitatum f. capitatum Ehrenberg, 1838 (uncertain > unassessed)
2. Forma Gomphonema capitatum f. curta H.F.Van Heurck (uncertain > unassessed)
3. Variety Gomphonema capitatum var. anglicum (Ehrenberg) Rabenhorst, 1864 accepted as Gomphonema anglicum Ehrenberg, 1843 (uncertain > unassessed)
4. Variety Gomphonema capitatum var. beta Smith, 1855 (uncertain > unassessed)
5. Variety Gomphonema capitatum var. constrictum Kirejeva, 1927 (uncertain > unassessed)
6. Variety Gomphonema capitatum var. curta (Grunow in Van Heurck) Heribaud, 1893 (uncertain > unassessed)
7. Variety Gomphonema capitatum var. fusticulus (Gregory; W. Smith mss., according to W. Smith) W. Smith, 1856 (uncertain > unassessed)
8. Variety Gomphonema capitatum var. gamma W. Smith, 1856 (uncertain > unassessed)
9. Variety Gomphonema capitatum var. gracile Rabenhorst, 1858 (uncertain > unassessed)
10. Variety Gomphonema capitatum var. herculeanum H.L. Smith, 1874-1879 (uncertain > unassessed)
11. Variety Gomphonema capitatum var. italicum (Kützing) G.L.Rabenhorst, 1864 accepted as Gomphonema italicum Kützing, 1844 (uncertain > unassessed)
12. Variety Gomphonema capitatum var. macilentum (J.P. Kociolek & E.F. Stoermer) E. Reichardt, 2001 accepted as Gomphonema truncatum var. macilentum Kociolek & Stoermer, 1991 (uncertain > unassessed)
13. Variety Gomphonema capitatum var. majus Kützing, 1844 (uncertain > unassessed)
14. Variety Gomphonema capitatum var. ventricosum (W.Gregory) G.L.Rabenhorst, 1864 accepted as Gomphonema ventricosum f. ventricosum Gregory, 1856 (uncertain > unassessed)
Species Gomphonema capitoccultum Reichardt
Species Gomphonema capsulare J.A.Ress, E.W.Thomas & Kociolek, 2016
Species Gomphonema carolinense Hagelstein, 1939
Species Gomphonema catarinensis G.Krasske, 1948
1. Variety Gomphonema catarinensis var. misionera Frenguelli, 1953
2. Forma Gomphonema catarinensis f. catarinensis Krasske, 1948 (uncertain > unassessed)
3. Forma Gomphonema catarinensis f. minor Krasske, 1948 (uncertain > unassessed)
Species Gomphonema changyangicum Li, Shi & Lei, 1999
Species Gomphonema charcotii M.Peragallo
1. Variety Gomphonema charcotii var. charcotii M. Peragallo, 1921 (uncertain > unassessed)
2. Variety Gomphonema charcotii var. symetrica Manguin, 1960 (uncertain > unassessed)
Species Gomphonema chemeron Jeff.R.Stone, Westover & Kociolek
Species Gomphonema chinense Liu & Kociolek, 2013
Species Gomphonema clavatoides H.P.Gandhi, 1960
1. Variety Gomphonema clavatoides var. rostratum H.P.Gandhi ex Karthick, 2020
2. Variety Gomphonema clavatoides var. valida Gandhi, 1960
3. Variety Gomphonema clavatoides var. rostrata H.P. Gandhi, 1998 accepted as Gomphonema clavatoides var. rostratum H.P.Gandhi ex Karthick, 2020 (Invalid - type not designated)
Species Gomphonema clavatuloides Rimet, D.G. Mann, Trobajo et N. Abarca in Rimet et al., 2018
Species Gomphonema clavatum Ehrenberg, 1832
1. Forma Gomphonema clavatum f. clavatum Ehrenberg, 1838 (uncertain > unassessed)
2. Forma Gomphonema clavatum f. curta (Grunow in Van Heurck) Heribaud, 1903 accepted as Gomphonema clavatum var. curta Grunow in Van Heurck, 1880 (uncertain > unassessed)
3. Variety Gomphonema clavatum var. curta Grunow in Van Heurck, 1880 (uncertain > unassessed)
Species Gomphonema clerici Frenguelli, 1923
Species Gomphonema clevei Fricke, 1902
1. Forma Gomphonema clevei f. acuta Gandhi, 1966
2. Variety Gomphonema clevei var. bipunctata Gandhi, 1959
3. Variety Gomphonema clevei var. undulata Gandhi, 1966
4. Forma Gomphonema clevei f. clevei Fricke in Schmidt et al., 1902 (uncertain > unassessed)
5. Forma Gomphonema clevei f. heterovalvata Voigt, 1942 (uncertain > unassessed)
6. Variety Gomphonema clevei var. baicalensis Skvortzow & Meyer, 1928 (uncertain > unassessed)
7. Variety Gomphonema clevei var. inaequilongum H. Kobayashi, 1965 (uncertain > unassessed)
8. Variety Gomphonema clevei var. javanica Hustedt, 1937 (uncertain > unassessed)
9. Variety Gomphonema clevei var. oryzae Skvortzov, 2012 (uncertain)
10. Variety Gomphonema clevei var. sinensis Voigt, 1942 (uncertain > unassessed)
Species Gomphonema confusum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema correntinum Frenguelli, 1933
Species Gomphonema dalatica Glushchenko, Kulikovskiy & Kociolek, 2017
Species Gomphonema darwinii L.L.Bahls, 2014
Species Gomphonema delicatula Skvortzov, 1937
1. Variety Gomphonema delicatula var. bipunctata Skvortzow, 1937 (uncertain > unassessed)
2. Variety Gomphonema delicatula var. delicatula Skvortzow, 1937 (uncertain > unassessed)
Species Gomphonema dharwarensis H.P.Gandhi, 1956
Species Gomphonema dichotiforme Z.X.Shi, 2004
Species Gomphonema difformum B.Karthick & J.P.Kociolek, 2011
Species Gomphonema diminutum B.Karthick & J.P.Kociolek, 2011
Species Gomphonema dirangense S.K.Das, C.Radhakrishnan, Kociolek & B.Karthick, 2018
Species Gomphonema distincte-striatum Kociolek, J. P. & Woodward, J.
Species Gomphonema dojranense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema doonense B.Karthick, R.Nautiyal & Kociolek, 2015
Species Gomphonema dubravicense Pantocsek
1. Variety Gomphonema dubravicense var. dubravicense Pantocsek, 1892 (uncertain > unassessed)
2. Variety Gomphonema dubravicense var. gallica M. Peragallo in Heribaud, 1920 (uncertain > unassessed)
Species Gomphonema eileencoxiae (Bahls, 2017) Bahls, C.E.Wetzel & Ector, 2018
Species Gomphonema elegantissimum E.Reichardt & H.Lange-Bertalot, 2011
Species Gomphonema elongatum W.Smith, 1855
1. Variety Gomphonema elongatum var. elongatum W. Smith, 1855 (uncertain > unassessed)
2. Variety Gomphonema elongatum var. minor Pantocsek, 1902 (uncertain > unassessed)
3. Variety Gomphonema elongatum var. minor M. Peragallo & Héribaud in Héribaud, 1893 (uncertain > unassessed)
4. Variety Gomphonema elongatum var. tenuis Cleve-Euler, 1932 (uncertain > unassessed)
Species Gomphonema eriensioides Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018
Species Gomphonema evolutionense L.L.Bahls, 2014
Species Gomphonema frequentiformis (Metzeltin & Krammer) C.E.Wetzel & F.F.Almeida in Almeida et al., 2020
Species Gomphonema frickei O.Müller, 1905
Species Gomphonema gallaudi Héribaud-Joseph
1. Variety Gomphonema gallaudi var. araucaniana Frenguelli, 1934 † (uncertain > unassessed)
2. Variety Gomphonema gallaudi var. gallaudi Héribaud, 1908 (uncertain > unassessed)
Species Gomphonema gandhii B.Karthick & J.P.Kociolek, 2011
Species Gomphonema gautieriforme D.Mitic-Kopanja, C.E.Wetzel, L.Ector & Z. Levkov, 2014
Species Gomphonema genestoermeri Liu & Kociolek, 2013
Species Gomphonema graciledictum E.Reichardt, 2015
Species Gomphonema grande B. Karthick, Kociolek, J.C. Taylor & Cocquyt, 2016
Species Gomphonema gregarium J.P Kociolek & Jeff Woodward, 2016
Species Gomphonema hedinii Hustedt, 1922
1. Variety Gomphonema hedinii var. lineare Z.X.Shi & J.Y.Chen in Shi, 2004
Species Gomphonema heideni F.Fricke
1. Variety Gomphonema heideni var. baicalensis Skvortzow & Meyer, 1928 (uncertain > unassessed)
2. Variety Gomphonema heideni var. heideni Fricke in Schmidt et al., 1904 (uncertain > unassessed)
3. Variety Gomphonema heideni var. mingiana Skvortzov, 2012 (uncertain)
4. Variety Gomphonema heideni var. sinica Skvortzow, 1938 (uncertain > unassessed)
5. Variety Gomphonema heideni var. sparsistriata Fricke in Schmidt et al., 1904 (uncertain > unassessed)
Species Gomphonema helveticum Brun, 1895
1. Variety Gomphonema helveticum var. helveticum Brun, 1895
2. Variety Gomphonema helveticum var. kamstschaticum Grun., 1878
3. Variety Gomphonema helveticum var. lagerheimei A. Cleve, 1895
4. Variety Gomphonema helveticum var. littorale Hendey, 1977
5. Variety Gomphonema helveticum var. tenue (Fricke in A. Schmidt) Hust., 1930
6. Forma Gomphonema helveticum f. helveticum Brun, 1895 (uncertain > unassessed)
7. Forma Gomphonema helveticum f. incurvata (Brun) Cleve-Euler, 1955 accepted as Gomphonema helveticum var. incurvatum Brun, 1895 (uncertain > unassessed)
8. Forma Gomphonema helveticum f. incurvatum (Brun) Mayer, 1928 accepted as Gomphonema helveticum var. incurvatum Brun, 1895 (uncertain > unassessed)
9. Variety Gomphonema helveticum var. genuina Mayer, 1928 (uncertain > unassessed)
10. Variety Gomphonema helveticum var. incurvatum Brun, 1895 (uncertain > unassessed)
11. Variety Gomphonema helveticum var. tenuis (Fricke) Hustedt, 1930 accepted as Gomphonema tenue Fricke, 1902 (uncertain > unassessed)
12. Variety Gomphonema helveticum var. undulatum Mayer, 1928 (uncertain > unassessed)
Species Gomphonema himalayaense Jüttner in Jüttner et al., 2018
Species Gomphonema hinziae Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema hristovskii Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema hubeicum Li, Shi & Lei, 1999
Species Gomphonema idsbense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema indistinctum Kociolek, J. P. & Woodward, J.
Species Gomphonema innata Skvortzov, 1937
1. Variety Gomphonema innata var. elegans Skvortzow, 1937 (uncertain > unassessed)
2. Variety Gomphonema innata var. innata Skvortzow, 1937 (uncertain > unassessed)
3. Variety Gomphonema innata var. octopunctatum Skvortzov, 2012 (uncertain)
Species Gomphonema insigne Gregory, 1856
1. Forma Gomphonema insigne f. insigne Gregory, 1856 (uncertain > unassessed)
2. Forma Gomphonema insigne f. lusus (uncertain > unassessed)
  1. Subforma Gomphonema insigne f. lusus cymbelliforme Mayer, 1919 (uncertain > unassessed)
3. Forma Gomphonema insigne f. major Grunow, 1880 (uncertain > unassessed)
4. Forma Gomphonema insigne f. minor H.F.Van Heurck (uncertain > unassessed)
5. Variety Gomphonema insigne var. acuminata Héribaud-Joseph & M.Peragallo (uncertain > unassessed)
6. Variety Gomphonema insigne var. elongatum Mayer, 1928 (uncertain > unassessed)
7. Variety Gomphonema insigne var. fossilis Mayer, 1928 (uncertain > unassessed)
8. Variety Gomphonema insigne var. genuinum Mayer, 1928 (uncertain > unassessed)
9. Variety Gomphonema insigne var. inaequalis Mayer, 1928 (uncertain > unassessed)
10. Variety Gomphonema insigne var. insigne Gregory (uncertain > unassessed)
11. Variety Gomphonema insigne var. major (Grunow in Van Heurck) (uncertain > unassessed)
12. Variety Gomphonema insigne var. major Heribaud & M. Peragallo in Heribaud, 1902 (uncertain > unassessed)
13. Variety Gomphonema insigne var. subaequale Mayer, 1928 (uncertain > unassessed)
14. Variety Gomphonema insigne var. subclavatiformis Mayer, 1928 (uncertain > unassessed)
15. Variety Gomphonema insigne var. undulatum Mayer, 1919 (uncertain > unassessed)
Species Gomphonema insuetum Kociolek in Kociolek et al., 2014
Species Gomphonema insularum Kociolek, J. P. & Woodward, J.
Species Gomphonema intricatoides You & Kociolek, 2015
Species Gomphonema intricatum Kützing, 1844
1. Variety Gomphonema intricatum var. mirum Z.X.Shi & H.Z.Zhu
2. Variety Gomphonema intricatum var. dichotomiformis Mayer, 1928 accepted as Gomphonema dichotiforme Z.X.Shi, 2004 (new status)
3. Forma Gomphonema intricatum f. attenuata Manguin in Bourrelly & Manguin, 1952 (uncertain > unassessed)
4. Forma Gomphonema intricatum f. densestriata Cleve-Euler, 1932 (uncertain > unassessed)
5. Forma Gomphonema intricatum f. dichotomum (Kützing) Grunow in Van Heurck, 1880 (uncertain > unassessed)
6. Forma Gomphonema intricatum f. duplo (uncertain > unassessed)
  1. Subforma Gomphonema intricatum f. duplo major Petkoff, 1932 (uncertain > unassessed)
7. Forma Gomphonema intricatum f. fossilis Pantocsek, 1889 (uncertain > unassessed)
8. Forma Gomphonema intricatum f. heteromorpha Cleve-Euler, 1932 (uncertain > unassessed)
9. Forma Gomphonema intricatum f. intermedia Cleve-Euler, 1955 (uncertain > unassessed)
10. Forma Gomphonema intricatum f. intricatum Kützing, 1844 (uncertain > unassessed)
11. Forma Gomphonema intricatum f. laticeps Cleve-Euler, 1932 (uncertain > unassessed)
12. Forma Gomphonema intricatum f. latior Rich, 1937 (uncertain > unassessed)
13. Forma Gomphonema intricatum f. latius Rich, 1937 (uncertain > unassessed)
14. Forma Gomphonema intricatum f. magis (uncertain > unassessed)
  1. Subforma Gomphonema intricatum f. magis capitata Hustedt, 1953 (uncertain > unassessed)
15. Forma Gomphonema intricatum f. major Tempère & Peragallo, 1908 (uncertain > unassessed)
16. Forma Gomphonema intricatum f. maximum Uherkovich, 1984 (uncertain > unassessed)
17. Forma Gomphonema intricatum f. minutissima Allorge & Manguin, 1941 (uncertain > unassessed)
18. Forma Gomphonema intricatum f. pumila Grunow, 1880 (uncertain > unassessed)
19. Forma Gomphonema intricatum f. pusilla (Mayer) Mayer, 1928 (uncertain > unassessed)
20. Forma Gomphonema intricatum f. pusilla (Mayer) Mayer, 1928 accepted as Gomphonema intricatum var. pusillum Mayer, 1919 (uncertain > unassessed)
21. Forma Gomphonema intricatum f. semiaperta Mayer, 1928 (uncertain > unassessed)
22. Forma Gomphonema intricatum f. semiaperta Mayer, 1928 (uncertain > unassessed)
23. Forma Gomphonema intricatum f. seminuda Cleve-Euler, 1955 (uncertain > unassessed)
24. Forma Gomphonema intricatum f. semipura Mayer, 1928 (uncertain > unassessed)
25. Forma Gomphonema intricatum f. subcapitata Mayer, 1928 (uncertain > unassessed)
26. Forma Gomphonema intricatum f. subclavato-lanceolata Rabenhorst, 1864 (uncertain > unassessed)
27. Forma Gomphonema intricatum f. subclavatolanceolatum Gutwinski, 1895 (uncertain > unassessed)
28. Forma Gomphonema intricatum f. subventricosa (Grunow in Van Heurck) Mayer, 1913 accepted as Gomphonema vibrio var. subventricosa H.F.Van Heurck (uncertain > unassessed)
29. Forma Gomphonema intricatum f. typica Mayer, 1928 (uncertain > unassessed)
30. Forma Gomphonema intricatum f. vibrio (Ehrenberg) Cleve, 1894 accepted as Gomphonema vibrio var. vibrio Ehrenberg, 1843 (uncertain > unassessed)
31. Variety Gomphonema intricatum var. angustata (Kützing) J.-J.Brun (uncertain > unassessed)
32. Variety Gomphonema intricatum var. bohemicum (Reichelt & Fricke) Cleve-Euler, 1955 accepted as Gomphonema bohemicum Reichelt & Fricke, 1902 (uncertain > unassessed)
33. Variety Gomphonema intricatum var. brevistriatum Kufferath, 1933 (uncertain > unassessed)
34. Variety Gomphonema intricatum var. curvatum Skvortzov, 2012 (uncertain)
35. Variety Gomphonema intricatum var. dichotomum Mayer, 1928 (uncertain > unassessed)
36. Variety Gomphonema intricatum var. diminutum Cleve-Euler, 1955 (uncertain > unassessed)
37. Variety Gomphonema intricatum var. genuina Mayer, 1913 (uncertain > unassessed)
38. Variety Gomphonema intricatum var. lancetula Skvortzov, 2012 (uncertain)
39. Variety Gomphonema intricatum var. laticeps (Cleve-Euler) Cleve-Euler, 1955 (uncertain > unassessed)
40. Variety Gomphonema intricatum var. lunata Germain, 1981 (uncertain > unassessed)
41. Variety Gomphonema intricatum var. major Tempère & Peragallo, 1915 (uncertain > unassessed)
42. Variety Gomphonema intricatum var. minor Skvortzow, 1937 (uncertain > unassessed)
43. Variety Gomphonema intricatum var. parvulum Mukhamediev, 1957 (uncertain > unassessed)
44. Variety Gomphonema intricatum var. pulvinata (Braun in Rabenhorst) Grunow in Van Heurck, 1880 accepted as Gomphonema pulvinatum Braun ex Rabenhorst, 1853 (uncertain > unassessed)
45. Variety Gomphonema intricatum var. pumila Cleve-Euler, 1932 (uncertain > unassessed)
46. Variety Gomphonema intricatum var. pusillum Mayer, 1919 (uncertain > unassessed)
47. Variety Gomphonema intricatum var. semiaperta Mayer, 1919 (uncertain > unassessed)
48. Variety Gomphonema intricatum var. strictum Tempère & Peragallo, 1913 (uncertain > unassessed)
49. Variety Gomphonema intricatum var. subclavatolanceolatum Gutwinski, 1890 (uncertain > unassessed)
50. Variety Gomphonema intricatum var. subclavatum Ebert, 1886 (uncertain > unassessed)
51. Variety Gomphonema intricatum var. tenella Tempère & Peragallo, 1914 (uncertain > unassessed)
52. Variety Gomphonema intricatum var. tripunctatum Woodhead & Tweed, 1960 (uncertain > unassessed)
53. Variety Gomphonema intricatum var. typicum Gutwinski (uncertain > unassessed)
54. Variety Gomphonema intricatum var. vibrio auct. non Ehrenberg (uncertain > unassessed)
Species Gomphonema italicum Kützing, 1844
1. Variety Gomphonema italicum var. densistriatum Levkov, Mitic-Kopanja & E.Reichardt, 2016
2. Variety Gomphonema italicum var. tumidum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema jablanicense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema jahniana Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018
Species Gomphonema jianghanense Y.L.Li, Z.J.Gong, P.Xie & J.Shen, 2007 †
Species Gomphonema jianghanensis Li, Gong, Xie & Shen, 2007 †
Species Gomphonema jilinense Huang in Huang et al., 1983 †
Species Gomphonema johnsonii L.Bahls, 2013
Species Gomphonema juettnerii B.Karthick, R.Nautiyal & Kociolek, 2015
Species Gomphonema juriljii Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema kalahariense Jeff.R.Stone & Kociolek
Species Gomphonema kallarense Pardhi et al., 2020
Species Gomphonema kaznakowi K.S.Mereschkowsky
1. Variety Gomphonema kaznakowi var. cruciatum Z.X.Shi & Y.L.Li in Shi, 2014
2. Variety Gomphonema kaznakowi var. mingiana Skvortzov, 2012 (uncertain)
Species Gomphonema kerguelenensis E.E.Manguin, 1954
1. Forma Gomphonema kerguelenensis f. kerguelenensis Manguin in Bourrelly & Manguin, 1954 (uncertain > unassessed)
2. Forma Gomphonema kerguelenensis f. lanceolata Manguin in Bourrelly & Manguin, 1954 (uncertain > unassessed)
3. Forma Gomphonema kerguelenensis f. rhomboidea Manguin in Bourrelly & Manguin, 1954 (uncertain > unassessed)
Species Gomphonema kezlyae Pardhi et al., 2020
Species Gomphonema kociolekii R.Jahn & N.Abarca
Species Gomphonema kociolekii R.Jahn & N.Abarca in Abarca et al., 2020
Species Gomphonema kozufense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema lacifrigidum M.Kulikovskiy, J.P.Kociolek & Solak in Kociolek & Guiry, 2018
Species Gomphonema lacusrankala Gandhi, 1958
1. Variety Gomphonema lacusrankala var. chandolensis H.P.Gandhi, 1964
2. Variety Gomphonema lacusrankala var. gracilis Gandhi, 1958
3. Variety Gomphonema lacusrankala var. robusta Gandhi, 1958
4. Variety Gomphonema lacusrankala var. lacusrankala Gandhi, 1958 (uncertain > unassessed)
Species Gomphonema lacusrankaloides B.Karthick & J.P.Kociolek, 2012
Species Gomphonema lacus-victoriense E.Reichardt, 2007
Species Gomphonema lagerheimei A.Cleve, 1895
Species Gomphonema lagerheimii A.Cleve, 1895
1. Forma Gomphonema lagerheimii f. lagerheimii A. Cleve, 1895 (uncertain > unassessed)
2. Forma Gomphonema lagerheimii f. minor Cleve-Euler, 1955 (uncertain > unassessed)
3. Forma Gomphonema lagerheimii f. simplex Foged, 1973 (uncertain > unassessed)
4. Variety Gomphonema lagerheimii var. distans A.Cleve-Euler, 1934 (uncertain > unassessed)
Species Gomphonema lapponicum (A.Cleve) Cleve-Euler
1. Forma Gomphonema lapponicum f. clavata Cleve-Euler, 1955 (uncertain > unassessed)
2. Forma Gomphonema lapponicum f. subundulata Cleve-Euler, 1955 (uncertain > unassessed)
3. Forma Gomphonema lapponicum f. typicum Cleve-Euler, 1955 (uncertain > unassessed)
4. Variety Gomphonema lapponicum var. intermedium Cleve-Euler, 1955 (uncertain > unassessed)
5. Variety Gomphonema lapponicum var. lapponicum (A. Cleve) Cleve-Euler, 1934 accepted as Gomphonema angustatum var. lapponica A. Cleve, 1895 (uncertain > unassessed)
6. Variety Gomphonema lapponicum var. subovale Cleve-Euler, 1955 (uncertain > unassessed)
Species Gomphonema latelanceolatum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema lateripunctatum Reichardt & Lange-Bertalot, 1991
Species Gomphonema liebscheri E.Reichardt, 2012
Species Gomphonema longiceps Ehrenberg, 1854
1. Variety Gomphonema longiceps var. montanum (Schumann) Hustedt, 1930 accepted as Gomphonema clavatum Ehrenberg, 1832
  1. Forma Gomphonema longiceps var. montanum f. suecicum (Grunow) Hustedt, 1930 accepted as Gomphonema montanum var. suecicum Grunow, 1880
2. Forma Gomphonema longiceps f. affine Manguin, 1949 (uncertain > unassessed)
3. Forma Gomphonema longiceps f. bicapitellata Manguin, 1964 (uncertain > unassessed)
4. Forma Gomphonema longiceps f. cuneata Manguin, 1964 (uncertain > unassessed)
5. Forma Gomphonema longiceps f. gracilis Hustedt, 1930 (uncertain > unassessed)
6. Forma Gomphonema longiceps f. longiceps Ehrenberg, 1854 (uncertain > unassessed)
7. Forma Gomphonema longiceps f. minuta Skvortzow, 1938 (uncertain > unassessed)
8. Forma Gomphonema longiceps f. montana (Schumann) Hustedt, 1930 accepted as Gomphonema montanum var. montanum Schumann, 1867 (uncertain > unassessed)
9. Forma Gomphonema longiceps f. robusta Allorge & Manguin, 1941 (uncertain > unassessed)
10. Forma Gomphonema longiceps f. subclavata Grunow ex Cleve & Moller, 1879 (uncertain > unassessed)
11. Forma Gomphonema longiceps f. suecica Grunow accepted as Gomphonema montanum var. suecica Grunow in Van Heurck, 1880 (uncertain > unassessed)
12. Variety Gomphonema longiceps var. australica Skvortzow, 1976 (uncertain > unassessed)
13. Variety Gomphonema longiceps var. balticum (Cleve) Grunow, 1878 accepted as Gomphonema balticum Cleve, 1868 (uncertain > unassessed)
14. Variety Gomphonema longiceps var. calcareum (Cleve) Grunow, 1878 (uncertain > unassessed)
15. Variety Gomphonema longiceps var. capitata Tynni, 1978 (uncertain > unassessed)
16. Variety Gomphonema longiceps var. minor Grunow, 1878 (uncertain > unassessed)
17. Variety Gomphonema longiceps var. mustela (Ehrenberg) Grunow, 1878 accepted as Gomphonema mustela f. mustela Ehrenberg, 1854 (uncertain > unassessed)
18. Variety Gomphonema longiceps var. rupestris Skvortzov, 2012 (uncertain)
19. Variety Gomphonema longiceps var. subclavata Grunow ex Cleve & Moller, 1879 (uncertain > unassessed)
20. Variety Gomphonema longiceps var. subclavatum Grunow, 1878 (uncertain > unassessed)
  1. Forma Gomphonema longiceps var. subclavatum f. gracilis Hustedt
Species Gomphonema lujanensis E.Reichardt & N.Maidana, 2008
Species Gomphonema lychnidum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema magniaqua M.Kulikovskiy, J.P.Kociolek & Solak in Kociolek & Guiry, 2018
Species Gomphonema magnifica H.P.Gandhi
1. Variety Gomphonema magnifica var. rhomboida Gandhi, 1960
2. Variety Gomphonema magnifica var. magnifica Gandhi, 1960 (uncertain > unassessed)
Species Gomphonema mariovense Levkov & Tofilovska in Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema martini F.Fricke
1. Variety Gomphonema martini var. genuinum Cleve-Euler, 1955 (uncertain > unassessed)
2. Variety Gomphonema martini var. intermedium Cleve-Euler, 1955 (uncertain > unassessed)
3. Variety Gomphonema martini var. martini Fricke in Schmidt et al., 1902 (uncertain > unassessed)
4. Variety Gomphonema martini var. minor Stone in McLaughlin & Stone, 1986 (uncertain > unassessed)
5. Variety Gomphonema martini var. subulatum (Cleve-Euler) Cleve-Euler, 1955 accepted as Gomphonema subulatum Cleve-Euler, 1932 (uncertain > unassessed)
Species Gomphonema matanensis D. Kapustin, Kociolek & Kulikovskiy in Kociolek et al., 2018
Species Gomphonema mayamae S.K.Das, C.Radhakrishnan, Kociolek & B.Karthick, 2018
Species Gomphonema megalobrebissonii D.A.Chudaev, J.P.Kociolek & M.A.Golobova, 2014
Species Gomphonema meridionale J.P.Kociolek & E.W.Thomas, 2009
Species Gomphonema metzeltinii You & Kociolek, 2015
Species Gomphonema microcapitatum Kulikovskiy, Kociolek & Solak, 2018
Species Gomphonema microlanceolatum You & Kociolek, 2015
Species Gomphonema microlaticollum Kulikovskiy, Kociolek & Solak, 2018
Species Gomphonema micropus Kützing, 1844
1. Forma Gomphonema micropus f. major Grunow, 1880 (uncertain > unassessed)
2. Forma Gomphonema micropus f. micropus Kützing, 1844 (uncertain > unassessed)
3. Variety Gomphonema micropus var. aequale (Gregory) E. Reichardt, 1999 (uncertain > unassessed)
4. Variety Gomphonema micropus var. exilis Grunow, 1880 (uncertain > unassessed)
5. Variety Gomphonema micropus var. major Héribaud-Joseph, 1903 (uncertain > unassessed)
6. Variety Gomphonema micropus var. micropus Heribaud (uncertain > unassessed)
7. Variety Gomphonema micropus var. minor Grunow, 1880 (uncertain > unassessed)
8. Variety Gomphonema micropus var. remota Pantocsek, 1903 (uncertain > unassessed)
9. Variety Gomphonema micropus var. remote-striata Pantocsek, 1904 (uncertain > unassessed)
10. Variety Gomphonema micropus var. tenellum (Kützing) Grunow, 1868 accepted as Gomphonema tenellum var. tenellum Kützing, 1844 (uncertain > unassessed)
Species Gomphonema minusculum Krasske
Species Gomphonema minutum (C.Agardh) C.Agardh, 1831
1. Forma Gomphonema minutum f. curtum (Hustedt) Lange-Bertalot & Reichardt in Krammer & Lange-Bertalot, 1991 accepted as Gomphonema curtum Hustedt, 1945 (uncertain > unassessed)
2. Forma Gomphonema minutum f. lemanense Lange-Bertalot & Reichardt in Krammer & Lange-Bertalot, 1991 (uncertain > unassessed)
3. Forma Gomphonema minutum f. pachypus Lange-Bertalot & Reichardt in Lange-Bertalot, 1993 (uncertain > unassessed)
4. Forma Gomphonema minutum f. pachypus Lange-Bertalot & Reichardt in Krammer & Lange-Bertalot, 1991 (uncertain > unassessed)
5. Forma Gomphonema minutum f. syriacum Lange-Bertalot & Reichardt in Krammr & Lange-Bertalot, 1991 (uncertain > unassessed)
Species Gomphonema modicum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema moniliforme Gandhi, 1960
Species Gomphonema mutunensis Ruwer, Ludwig & Rodrigues, 2019
Species Gomphonema nagpurense Sarode & Kamat, 1984
Species Gomphonema navicelloides Frenguelli, 1942
Species Gomphonema naviculoides W. Smith, 1856
1. Variety Gomphonema naviculoides var. navicella Lacoste & Suringar ex Rabenhorst, 1864 (uncertain > unassessed)
2. Variety Gomphonema naviculoides var. naviculoides W. Smith, 1856 (uncertain > unassessed)
Species Gomphonema neotropicum N.Abarca & D.Mora
Species Gomphonema neotropicum N.Abarca & D.Mora in Abarca et al., 2020
Species Gomphonema nesophilum Kociolek, J. P. & Woodward, J.
Species Gomphonema obesoccultum Reichardt
Species Gomphonema occidentale
1. Variety Gomphonema occidentale var. abbreviata M.Schmidt, 1899 (uncertain > unassessed)
2. Variety Gomphonema occidentale var. occidentale M. Schmidt in Schmidt et al., 1899 (uncertain > unassessed)
Species Gomphonema olivaceum (Lyngbye) Desmazières, 1825
1. Forma Gomphonema olivaceum f. balticum (Cleve) Grunow in Van Heurck, 1880 accepted as Gomphonema balticum Cleve, 1868 (uncertain > unassessed)
2. Forma Gomphonema olivaceum f. calcarea (Cleve) Van Heurck, 1880 (uncertain > unassessed)
3. Forma Gomphonema olivaceum f. caspia Grunow, 1878 (uncertain > unassessed)
4. Forma Gomphonema olivaceum f. dubia (Mayer) Cleve-Euler, 1955 (uncertain > unassessed)
5. Forma Gomphonema olivaceum f. dubia Mayer, 1919 (uncertain > unassessed)
6. Forma Gomphonema olivaceum f. genuinum Mayer, 1913 (uncertain > unassessed)
7. Forma Gomphonema olivaceum f. inflata Mayer, 1913 (uncertain > unassessed)
8. Forma Gomphonema olivaceum f. minores Mayer, 1919 (uncertain > unassessed)
9. Forma Gomphonema olivaceum f. minutulum (Mayer) Mayer, 1919 (uncertain > unassessed)
10. Forma Gomphonema olivaceum f. minutulum Mayer, 1913 (uncertain > unassessed)
11. Forma Gomphonema olivaceum f. sipanguelensis Li, 1983 (uncertain > unassessed)
12. Forma Gomphonema olivaceum f. stauroneiformis Grunow in Van Heurck, 1880 (uncertain > unassessed)
13. Forma Gomphonema olivaceum f. subramosa (Agardh) Mayer, 1928 accepted as Gomphonema subramosum var. subramosum Agardh, 1831 (uncertain > unassessed)
14. Forma Gomphonema olivaceum f. typica Mayer, 1928 (uncertain > unassessed)
15. Forma Gomphonema olivaceum f. typica Mayer, 1928 (uncertain > unassessed)
16. Forma Gomphonema olivaceum f. undulatum Vozzhennikova, 1949 (uncertain > unassessed)
17. Variety Gomphonema olivaceum var. argunensis Skvortzov, 2012 (uncertain)
18. Variety Gomphonema olivaceum var. baikalensis (Skvortzow) H. Kobayasi, 1977 (uncertain > unassessed)
19. Variety Gomphonema olivaceum var. baikalensis Skvortzov, 2012 (uncertain)
20. Variety Gomphonema olivaceum var. flavescentia Aine, 1863 (uncertain > unassessed)
21. Variety Gomphonema olivaceum var. glacialis (Kützing) ? (uncertain > unassessed)
22. Variety Gomphonema olivaceum var. inflata (Mayer) Mayer, 1919 (uncertain > unassessed)
23. Variety Gomphonema olivaceum var. subacutum Pantocsek, 1902 (uncertain > unassessed)
24. Variety Gomphonema olivaceum var. subramosum (Agardh) Grunow in Van Heurck, 1880 accepted as Gomphonema subramosum var. subramosum Agardh, 1831 (uncertain > unassessed)
25. Variety Gomphonema olivaceum var. tenellum sensu Schonfeldt, 1907 (uncertain > unassessed)
26. Variety Gomphonema olivaceum var. undulata Kiselev-Vozzhennikova, 1950 (uncertain > unassessed)
27. Variety Gomphonema olivaceum var. vulgare (Van Heurck) Gutwinski, 1909 accepted as Gomphonema clavatum var. curta Grunow in Van Heurck, 1880 (uncertain > unassessed)
Species Gomphonema oregonicum Ehrenberg
1. Variety Gomphonema oregonicum var. maximum (Grunow) M.Peragallo, 1897 accepted as Gomphonema maximum Grunow, 1880 (uncertain > unassessed)
2. Variety Gomphonema oregonicum var. oregonicum Ehrenberg, 1849 (uncertain > unassessed)
Species Gomphonema oxycephalum Cleve
1. Variety Gomphonema oxycephalum var. oxycephalum Cleve, 1894 (uncertain > unassessed)
2. Variety Gomphonema oxycephalum var. puiggarianum (Grunow in Van Heurck) (uncertain > unassessed)
Species Gomphonema paracapitatum Kulikovskiy, Kociolek & Solak, 2018
Species Gomphonema paradaphnoides Cejudo-Figueiras, S.Blanco & Ãlvarez-Blanco, 2012
Species Gomphonema paraexilissimum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema parapygmaeum Jüttner & Kociolek in Jüttner et al., 2018
Species Gomphonema parasundaense Jüttner in Jüttner et al., 2018
Species Gomphonema paratergestinum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema parvicapitatum Kociolek in Kociolek et al., 2014
Species Gomphonema parvuliforme Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema parvulum (Kützing) Kützing, 1849
1. Variety Gomphonema parvulum var. exile Grun., 1878
2. Variety Gomphonema parvulum var. parvulum
3. Variety Gomphonema parvulum var. platypus Ostr., 1910
4. Variety Gomphonema parvulum var. subellipticum Cleve, 1894
5. Variety Gomphonema parvulum var. exilissima Grunow in Van Heurck, 1880 accepted as Gomphonema parvulum var. exilissimum Grunow, 1880
6. Variety Gomphonema parvulum var. exilissimum Grunow, 1880 accepted as Gomphonema exilissimum (Grunow) Lange-Bertalot & E.Reichardt, 1996
7. Variety Gomphonema parvulum var. micropus (Kützing) Cleve, 1894 accepted as Gomphonema micropus Kützing, 1844
8. Forma Gomphonema parvulum f. affine Manguin, 1942 (uncertain > unassessed)
9. Forma Gomphonema parvulum f. astigma Manguin, 1952 (uncertain > unassessed)
10. Forma Gomphonema parvulum f. bacillum Manguin, 1949 (uncertain > unassessed)
11. Forma Gomphonema parvulum f. elongata Schaarschmidt, 1882 (uncertain > unassessed)
12. Forma Gomphonema parvulum f. fossilis Manguin, 1949 (uncertain > unassessed)
13. Forma Gomphonema parvulum f. genuinum Mayer, 1919 (uncertain > unassessed)
14. Forma Gomphonema parvulum f. lagenula (Kützing) Otto Müller, 1905 accepted as Gomphonema lagenula var. lagenula Kützing, 1844 (uncertain > unassessed)
15. Forma Gomphonema parvulum f. lanceolata (Grunow) Otto Müller, 1905 accepted as Gomphonema parvulum var. lanceolata Grunow, 1880 (uncertain > unassessed)
16. Forma Gomphonema parvulum f. micropus (Kützing) Cleve, 1894 accepted as Gomphonema micropus f. micropus Kützing, 1844 (uncertain > unassessed)
17. Forma Gomphonema parvulum f. nipponica Skvortzow, 1936 (uncertain > unassessed)
18. Forma Gomphonema parvulum f. parvulum (Kützing) Kützing, 1849 accepted as Sphenella parvula Kützing, 1844 (uncertain > unassessed)
19. Forma Gomphonema parvulum f. saprophilum Lange-Bertalot & Reichardt, 1993 (uncertain > unassessed)
20. Forma Gomphonema parvulum f. semiaperta Mayer, 1928 (uncertain > unassessed)
21. Forma Gomphonema parvulum f. subcapitata (Grunow) Otto Müller, 1905 accepted as Gomphonema parvulum var. subcapitata Grunow, 1880 (uncertain > unassessed)
22. Forma Gomphonema parvulum f. subovata Manguin, 1949 (uncertain > unassessed)
23. Forma Gomphonema parvulum f. undulata Coste & Ricard, 1982 (uncertain > unassessed)
24. Variety Gomphonema parvulum var. aequalis Mayer, 1928 (uncertain > unassessed)
25. Variety Gomphonema parvulum var. baicalensis Skvortzow & Meyer, 1928 (uncertain > unassessed)
26. Variety Gomphonema parvulum var. clavatum Okuno, 1952 (uncertain > unassessed)
27. Variety Gomphonema parvulum var. curta R.d'Aubert, 1920 (uncertain > unassessed)
28. Variety Gomphonema parvulum var. deserta Skvortzow, 1935 (uncertain > unassessed)
29. Variety Gomphonema parvulum var. exilis Grunow, 1878 (uncertain > unassessed)
30. Variety Gomphonema parvulum var. lagenula (Kützing) Frenguelli, 1923 accepted as Gomphonema lagenula var. lagenula Kützing, 1844 (uncertain > unassessed)
31. Variety Gomphonema parvulum var. lanceolata Grunow, 1880 (uncertain > unassessed)
32. Variety Gomphonema parvulum var. lapponica (A. Cleve) (uncertain > unassessed)
33. Variety Gomphonema parvulum var. minutissima Holmboe, 1900 (uncertain > unassessed)
34. Variety Gomphonema parvulum var. parvulius Lange-Bertalot & Reichardt, 1993 (uncertain > unassessed)
35. Variety Gomphonema parvulum var. sinica Skvortzow, 1935 (uncertain > unassessed)
36. Variety Gomphonema parvulum var. subcapitata Grunow, 1880 (uncertain > unassessed)
37. Variety Gomphonema parvulum var. subelliptica Cleve, 1894 (uncertain > unassessed)
38. Variety Gomphonema parvulum var. tergestina (Grunow) Cleve, 1894 accepted as Gomphonema semiapertum var. tergestina Grunow, 1880 (uncertain > unassessed)
39. Variety Gomphonema parvulum var. undulata A. Cleve, 1895 (uncertain > unassessed)
Species Gomphonema patagonicum Krasske, 1939
Species Gomphonema pelisteriense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema preliciae Levkov, Mitic-Kopanja & E. Reichardt, 2016
Species Gomphonema prespanense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema prowsei Glushchenko, Kulikovskiy & Kociolek, 2017
Species Gomphonema pseudacuminatum Kulikovskiy, Kociolek & Solak, 2015
Species Gomphonema pseudaffine Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema pseudoparvulum Kociolek, J. P. & Woodward, J.
Species Gomphonema puiggarianum
1. Forma Gomphonema puiggarianum f. puiggarianum Grunow in Van Heurck, 1880 (uncertain > unassessed)
2. Forma Gomphonema puiggarianum f. reducta Manguin in Bourrelly & Manguin, 1952 (uncertain > unassessed)
3. Variety Gomphonema puiggarianum var. aequitorialis Cleve, 1894 (uncertain > unassessed)
4. Variety Gomphonema puiggarianum var. sinica Skvortzow, 1929 (uncertain > unassessed)
Species Gomphonema punae H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
Species Gomphonema pusillum (Grunow, 1880) Kulikovskiy & Kociolek, 2018
Species Gomphonema pygmaeoides You & Kociolek, 2015
Species Gomphonema qingyiensis L-X. Zhang, P. Yu & Q-M. You in Zhang et al., 2020
Species Gomphonema raraense Jüttner & S.Gurung in Jüttner et al., 2018
Species Gomphonema reediae Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema resendei A.R.Moura
Species Gomphonema rexlowei Liu & Kociolek, 2013
Species Gomphonema rhombicum Fricke, 1904
1. Variety Gomphonema rhombicum var. minor Fricke in Schmidt et al., 1904 (uncertain > unassessed)
2. Variety Gomphonema rhombicum var. rhombicum Fricke in Schmidt et al., 1904 (uncertain > unassessed)
Species Gomphonema rimetiana Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018
Species Gomphonema ristovskae Levkov & Tofilovska in Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema rostellatum (Kützing) G.L.Rabenhorst
1. Variety Gomphonema rostellatum var. elongatum (Kützing) Rabenhorst, 1864 accepted as Sphenella rostellata var. elongata Kützing, 1844 (uncertain > unassessed)
2. Variety Gomphonema rostellatum var. rostellatum Rabenhorst, 1864 (uncertain > unassessed)
Species Gomphonema russicum Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018
Species Gomphonema saparense S.K.Das, C.Radhakrishnan, Kociolek & B.Karthick, 2018
Species Gomphonema saravathense Gandhi, 1970
Species Gomphonema scardicum D.Mitic-Kopanja, C.E.Wetzel, L.Ector & Z.Levkov, 2014
Species Gomphonema scharfii H. Lange-Bertalot & Rumrich in U. Rumrich, H. Lange-Bertalot & M. Rumrich, 2000
Species Gomphonema semiapertum Grunow, 1880
1. Variety Gomphonema semiapertum var. semiapertum Grunow in Van Heurck, 1880 (uncertain > unassessed)
2. Variety Gomphonema semiapertum var. tergestina Grunow, 1880 (uncertain > unassessed)
Species Gomphonema shanghaiensis Zhang & Kociolek, 2016
Species Gomphonema shiwania Y.Liu, Kulikovskiy & Kociolek in Zhang et al., 2020
Species Gomphonema sichuanenesis Y.Li & J.P.Kociolek, 2010
Species Gomphonema sichuanensis Li & Kociolek in Li et al., 2010
Species Gomphonema sierrianum Stancheva & Kociolek, 2016
Species Gomphonema sphaerophorum Ehrenberg, 1845
1. Forma Gomphonema sphaerophorum f. jogensis Gandhi, 1966
2. Variety Gomphonema sphaerophorum var. kolhapurense Sarode & Kamat, 1984
3. Forma Gomphonema sphaerophorum f. sphaerophorum Ehrenberg, 1845 (uncertain > unassessed)
4. Forma Gomphonema sphaerophorum f. subcapitata Venkataraman, 1939 (uncertain > unassessed)
5. Variety Gomphonema sphaerophorum var. asiatica Skvortzow, 1929 (uncertain > unassessed)
6. Variety Gomphonema sphaerophorum var. parvum Cholnoky, 1954 (uncertain > unassessed)
Species Gomphonema spicula Gandhi, 1958
Species Gomphonema spiculoides H.P.Gandhi
1. Variety Gomphonema spiculoides var. major Gandhi, 1960
2. Variety Gomphonema spiculoides var. spiculoides Gandhi, 1960 (uncertain > unassessed)
Species Gomphonema spirkovskae Levkov & Mitic-Kopanja in Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema stauroneiforme Grunow
1. Forma Gomphonema stauroneiforme f. caspia Grunow, 1878 (uncertain > unassessed)
2. Forma Gomphonema stauroneiforme f. stauroneiforme Grunow, 1878 (uncertain > unassessed)
3. Variety Gomphonema stauroneiforme var. caspia Grunow, 1878 (uncertain > unassessed)
Species Gomphonema staurophorum (Pantocsek) Cleve-Euler, 1955
1. Variety Gomphonema staurophorum var. oblongum Li & Shi, 2003
2. Forma Gomphonema staurophorum f. parallelistriatum Cleve-Euler, 1955 (uncertain > unassessed)
3. Forma Gomphonema staurophorum f. producta Cleve-Euler, 1955 (uncertain > unassessed)
4. Variety Gomphonema staurophorum var. genuinum Cleve-Euler, 1955 (uncertain > unassessed)
5. Variety Gomphonema staurophorum var. staurophorum (Pantocsek) Cleve-Euler, 1955 accepted as Gomphonema olivaceum var. staurophora Pantocsek, 1889 (uncertain > unassessed)
Species Gomphonema subapicatum F.E.Fritsch & M.F.Rich
1. Variety Gomphonema subapicatum var. curta Fritsch & Rich, 1929 (uncertain > unassessed)
2. Variety Gomphonema subapicatum var. okamurae (Skvortzow) Gandhi, 1960 accepted as Gomphonema augur var. okamurae Skvortzow, 1937 (uncertain > unassessed)
3. Variety Gomphonema subapicatum var. subapicatum Fritsch & Rich, 1929 (uncertain > unassessed)
Species Gomphonema subclavatum Grunow in Van Heurck, 1880
1. Variety Gomphonema subclavatum var. bonaerense Frenguelli, 1925
2. Variety Gomphonema subclavatum var. elongatum Z.X.Shi, 2014
3. Variety Gomphonema subclavatum var. pomeranicum N.Abarca & R.Jahn
4. Variety Gomphonema subclavatum var. pomeranicum N.Abarca & R.Jahn in Abarca et al., 2020
5. Forma Gomphonema subclavatum f. curvata (Brun & M. Peragallo in Heribaud) Cleve, 1894 accepted as Gomphonema mustela var. curvata Brun & M. Peragallo in Heribaud, 1893 (uncertain > unassessed)
6. Forma Gomphonema subclavatum f. gracilis (Hustedt) Woodhead & Tweed, 1953 (uncertain > unassessed)
7. Forma Gomphonema subclavatum f. minor Brun ex Fricke in Schmidt et al., 1904 (uncertain > unassessed)
8. Forma Gomphonema subclavatum f. subclavatum (Grunow in Van Heurck) Grunow, 1884 accepted as Gomphonema montanum f. subclavatum Grunow in Van Heurck, 1880 (uncertain > unassessed)
9. Variety Gomphonema subclavatum var. acuminata M.Peragallo & Héribaud, 1893 (uncertain > unassessed)
10. Variety Gomphonema subclavatum var. bengalense (Grunow in Van Heurck) Stockmayer, 1909 accepted as Gomphonema bengalense Grunow in Van Heurck, 1880 (uncertain > unassessed)
11. Variety Gomphonema subclavatum var. bonaerensis Frenguelli, 1925 (uncertain > unassessed)
12. Variety Gomphonema subclavatum var. commutatum (Grunow) Mayer, 1919 accepted as Gomphonema commutatum f. commutatum Grunow in Van Heurck, 1880 (uncertain > unassessed)
13. Variety Gomphonema subclavatum var. fossilis Frenguelli, 1926 (uncertain > unassessed)
14. Variety Gomphonema subclavatum var. genuinum Mayer, 1919 (uncertain > unassessed)
15. Variety Gomphonema subclavatum var. gracilis (Hustedt) Frenguelli, 1941 (uncertain > unassessed)
16. Variety Gomphonema subclavatum var. hankensis Skvortzow, 1929 (uncertain > unassessed)
17. Variety Gomphonema subclavatum var. major Héribaud-Joseph (uncertain > unassessed)
18. Variety Gomphonema subclavatum var. medium Mayer, 1919 (uncertain > unassessed)
19. Variety Gomphonema subclavatum var. minor Fricke in Schmidt et al., 1906 (uncertain > unassessed)
20. Variety Gomphonema subclavatum var. montana (Schumann) Cleve, 1894 (uncertain > unassessed)
21. Variety Gomphonema subclavatum var. mustela (Ehrenberg) Cleve, 1894 accepted as Gomphonema mustela f. mustela Ehrenberg, 1854 (uncertain > unassessed)
22. Variety Gomphonema subclavatum var. obliqua (Grunow) Cleve, 1894 accepted as Gomphonema commutatum var. obliqua Grunow, 1884 (uncertain > unassessed)
23. Variety Gomphonema subclavatum var. sparsistriata (Muller) Brun ex Fricke, 1904 (uncertain > unassessed)
24. Variety Gomphonema subclavatum var. staurophora Pantocsek, 1913 (uncertain > unassessed)
25. Variety Gomphonema subclavatum var. tenella (Kützing) J.Frenguelli, 1942 accepted as Gomphonema tenellum var. tenellum Kützing, 1844 (uncertain > unassessed)
26. Variety Gomphonema subclavatum var. tenellum Mayer, 1919 (uncertain > unassessed)
Species Gomphonema subinsigniforme L.Ge, Y.Liu & J.P.Kociolek, 2014
Species Gomphonema sublaticollum Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema submalayense Gandhi, 1970
Species Gomphonema subnaviculoides Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema subodhii Jüttner & S.Gurung in Jüttner et al., 2018
Species Gomphonema subramosum C.A.Agardh
1. Variety Gomphonema subramosum var. clavatum (Ehrenberg) G.L.Rabenhorst, 1864 accepted as Gomphonema clavatum f. clavatum Ehrenberg, 1838 (uncertain > unassessed)
2. Variety Gomphonema subramosum var. erosum (Rabenhorst) Rabenhorst, 1853 (uncertain > unassessed)
3. Variety Gomphonema subramosum var. subramosum Agardh, 1831 (uncertain > unassessed)
Species Gomphonema subtile Ehrenberg, 1843
1. Variety Gomphonema subtile var. subtile Ehrenberg, 1843
2. Forma Gomphonema subtile f. augusta Grunow in Van Heurck, 1880 (uncertain > unassessed)
3. Forma Gomphonema subtile f. subtile Ehrenberg, 1843 (uncertain > unassessed)
4. Variety Gomphonema subtile var. angusta (Grunow in Van Heurck) Tempère & Peragallo, 1914 (uncertain > unassessed)
5. Variety Gomphonema subtile var. malayensis Hustedt, 1942 (uncertain > unassessed)
6. Variety Gomphonema subtile var. rotundatum A. Cleve, 1895 (uncertain > unassessed)
7. Variety Gomphonema subtile var. sagitta (Schumann) Cleve, 1894 accepted as Gomphonema sagitta Schumann, 1863 (uncertain > unassessed)
8. Variety Gomphonema subtile var. typicum Cleve-Euler, 1955 (uncertain > unassessed)
Species Gomphonema svalbardense E.Pinseel, K.Kopalová & Van der Vijver, 2014
Species Gomphonema tamilense B.Karthick & J.P.Kociolek, 2012
Species Gomphonema tenoccultum Reichardt
Species Gomphonema tenuis Gandhi, 1960
Species Gomphonema tergestinum (Grunow in Van Heurck) Fricke, 1902
1. Forma Gomphonema tergestinum f. subrostrata Manguin, 1964 (uncertain > unassessed)
2. Forma Gomphonema tergestinum f. tergestinum (Grunow in Van Heurck) Fricke in Schmidt et al., 1902 accepted as Gomphonema semiapertum var. tergestina Grunow, 1880 (uncertain > unassessed)
3. Variety Gomphonema tergestinum var. arcaliae Robert, 1969 (uncertain > unassessed)
4. Variety Gomphonema tergestinum var. shantungensis Skvortzow, 1937 (uncertain > unassessed)
Species Gomphonema thumii (Fricke) H. Lange-Bertalot in D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005
Species Gomphonema truncatum Ehrenberg, 1832
1. Forma Gomphonema truncatum f. bipunctatum (Kufferath) Woodhead & Tweed, 1960 accepted as Gomphonema constrictum f. bipunctata Kufferath, 1957 (uncertain > unassessed)
2. Forma Gomphonema truncatum f. capitata (Ehrenberg) Woodhead & Tweed, 1954 accepted as Gomphonema capitatum f. capitatum Ehrenberg, 1838 (uncertain > unassessed)
3. Forma Gomphonema truncatum f. italica (Mayer) Woodhead & Tweed, 1954 accepted as Gomphonema italicum Kützing, 1844 (uncertain > unassessed)
4. Forma Gomphonema truncatum f. robustum (Mayer) Woodhead & Tweed, 1960 (uncertain > unassessed)
5. Forma Gomphonema truncatum f. turgidum (Ehrenberg) Woodhead & Tweed, 1960 accepted as Gomphonema turgidum Ehrenberg, 1854 (uncertain > unassessed)
6. Variety Gomphonema truncatum var. capitatum (Ehrenberg) R.M.Patrick, 1975 (uncertain > unassessed)
7. Variety Gomphonema truncatum var. cuneatum (F.Fricke) K.E.Camburn, 1978 accepted as Gomphonema constrictum var. cuneata F.Fricke, 1904 (uncertain > unassessed)
8. Variety Gomphonema truncatum var. elongata (M.Peragallo & Héribaud-Joseph) R.M.Patrick, 1975 accepted as Gomphonema constrictum var. elongata M.Peragallo & Héribaud-Joseph, 1893 (uncertain > unassessed)
9. Variety Gomphonema truncatum var. macilentum Kociolek & Stoermer, 1991 (uncertain > unassessed)
10. Variety Gomphonema truncatum var. truncatum Ehrenberg, 1832 (uncertain > unassessed)
11. Variety Gomphonema truncatum var. turgidum (Ehrenberg) R.M.Patrick, 1975 (uncertain > unassessed)
Species Gomphonema tumens Kociolek & Stoermer, 1991
Species Gomphonema turgidum Ehrenberg, 1854
Species Gomphonema undulans I.Ãlvarez-Blanco, C.Cejudo-Figueiras & S.Blanco, 2013
Species Gomphonema validum Cleve, 1894
1. Variety Gomphonema validum var. elongata Cleve, 1894 (uncertain > unassessed)
2. Variety Gomphonema validum var. validum Cleve, 1894 (uncertain > unassessed)
Species Gomphonema vardarense Levkov, Mitic-Kopanja & E.Reichardt, 2016
Species Gomphonema variabilis A.Jurilj, 1957
Species Gomphonema varioreduncum Jüttner, Ector, E. Reichardt, Van de Vijver & E.J.Cox, 2013
Species Gomphonema vastum F.Hustedt
1. Variety Gomphonema vastum var. attenuatum Skvortzow & Noda, 1971 (uncertain > unassessed)
2. Variety Gomphonema vastum var. capitata Skvortzow, 1937 (uncertain > unassessed)
3. Variety Gomphonema vastum var. cuneata Skvortzow, 1936 (uncertain > unassessed)
4. Variety Gomphonema vastum var. elongata Skvortzow, 1936 (uncertain > unassessed)
5. Variety Gomphonema vastum var. fossilis Skvortzow, 1937 (uncertain > unassessed)
6. Variety Gomphonema vastum var. latum Skvortzow & Noda, 1971 (uncertain > unassessed)
7. Variety Gomphonema vastum var. maxima Skvortzow, 1936 (uncertain > unassessed)
8. Variety Gomphonema vastum var. vastum Hustedt, 1927 (uncertain > unassessed)
Species Gomphonema ventricosum Gregory, 1856
1. Forma Gomphonema ventricosum f. curtum Skvortzow & Meyer, 1928 (uncertain > unassessed)
2. Forma Gomphonema ventricosum f. subcapitatum Skvortzow, 1971 (uncertain > unassessed)
3. Forma Gomphonema ventricosum f. ventricosum Gregory, 1856 (uncertain > unassessed)
4. Variety Gomphonema ventricosum var. africana Reichelt, 1903 accepted as Gomphonema kalahariense Jeff.R.Stone & Kociolek (uncertain > unassessed)
5. Variety Gomphonema ventricosum var. maxima Cleve, 1894 (uncertain > unassessed)
6. Variety Gomphonema ventricosum var. ornata Grunow in Van Heurck, 1880 (uncertain > unassessed)
7. Variety Gomphonema ventricosum var. selengensis Skvortzov, 2012 (uncertain)
8. Variety Gomphonema ventricosum var. tasmanica Cleve, 1894 (uncertain > unassessed)
Species Gomphonema vibrio Ehrenberg, 1843
1. Variety Gomphonema vibrio var. bohemicum (Reichelt & Fricke) R.Ross, 1986 accepted as Gomphonema bohemicum Reichelt & Fricke, 1902 (uncertain > unassessed)
2. Variety Gomphonema vibrio var. fossile (Pantocesk) R. Ross in Hartley, 1986 (uncertain > unassessed)
3. Variety Gomphonema vibrio var. hebridense (W.Gregory) G.L.Rabenhorst, 1864 accepted as Gomphonema hebridense W.Gregory, 1854 (uncertain > unassessed)
4. Variety Gomphonema vibrio var. intricatum (Kützing) R.Ross, 1986 (uncertain > unassessed)
5. Variety Gomphonema vibrio var. pulvinatum (Braun ex Rabhorst) R.Ross, 1986 accepted as Gomphonema pulvinatum Braun ex Rabenhorst, 1853 (uncertain > unassessed)
6. Variety Gomphonema vibrio var. pumilum (Grunow in Van Heurck) R. Ross in Hartley, 1986 (uncertain > unassessed)
7. Variety Gomphonema vibrio var. pusillum (A.Mayer) R.Ross, 1986 (uncertain > unassessed)
8. Variety Gomphonema vibrio var. subcapitatum (A.Mayer) J.H.Lee, 1992 accepted as Gomphonema intricatum f. subcapitata Mayer, 1928 (uncertain > unassessed)
9. Variety Gomphonema vibrio var. subventricosa H.F.Van Heurck (uncertain > unassessed)
10. Variety Gomphonema vibrio var. vibrio Ehrenberg, 1843 (uncertain > unassessed)
Species Gomphonema vidarbhense Sarode & Kamat, 1984
Species Gomphonema williamsii Kociolek & Liu, 2013
Species Gomphonema witkowskii Kociolek & Liu, 2013
Species Gomphonema wuyiensis W.Zhang & Kociolek in Zhang et al., 2018
Species Gomphonema xiantaoicum Z.X.Shi & N.Li in Z.X.Shi, 2014
Species Gomphonema xinjiangianum You & Kociolek, 2015
Species Gomphonema yangtzensis Li in Li, Gong, Xie & Shen, 2006
Species Gomphonema yaominae Li, 2012
Species Gomphonema yberiense Frenguelli, 1933
Species Gomphonema yunnaniana Y.Liu et Kociolek in Liu et al., 2020
Species Gomphonema abbreviatum C.Agardh, 1831 accepted as Rhoicosphenia abbreviata (C.Agardh) Lange-Bertalot, 1980 (Basionym)
1. Variety Gomphonema abbreviatum var. japonicum Skvortzov, 2012 (uncertain)
Species Gomphonema borealis Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018 accepted as Gomphonema magniaqua M.Kulikovskiy, J.P.Kociolek & Solak in Kociolek & Guiry, 2018 (Later homonym; Non Gomphonema boreale Østrup, 1910: 239, pl. 14:fig. 5.)
Species Gomphonema calcareum Cleve, 1868 accepted as Gomphonema olivaceum var. calcareum (Cleve) Van Heurck, 1880 (Basionym)
1. Variety Gomphonema calcareum var. calcareum Cleve, 1868 (uncertain > unassessed)
2. Variety Gomphonema calcareum var. inflatum (Mayer) (uncertain > unassessed)
3. Variety Gomphonema calcareum var. minor Grunow (uncertain > unassessed)
4. Variety Gomphonema calcareum var. sabclavatum Grunow (uncertain > unassessed)
Species Gomphonema chubichuense I.Jüttner & E.J.Cox, 2000 accepted as Gomphosinica chubichuensis (I.Jüttner & E.J.Cox in Jüttner et al.) Kociolek, You & X.Wang in Kociolek, You, X.Wang & Q.Liu, 2015
Species Gomphonema commutatum Grunow, 1880 accepted as Gomphonema subclavatum var. commutatum (Grunow) Mayer, 1919
1. Forma Gomphonema commutatum f. curta Frenguelli, 1923
2. Forma Gomphonema commutatum f. commutatum Grunow in Van Heurck, 1880 (uncertain > unassessed)
3. Variety Gomphonema commutatum var. mexicanum Grunow, 1880 (uncertain > unassessed)
4. Variety Gomphonema commutatum var. obliqua Grunow, 1884 (uncertain > unassessed)
Species Gomphonema constrictum Ehrenberg, 1832 accepted as Gomphonema truncatum Ehrenberg, 1832 (Synonym)
1. Variety Gomphonema constrictum var. ellipticum Z.X.Shi & J.Y.Chen in Shi
2. Variety Gomphonema constrictum var. parvum (Grunow ex Fricke in Schmidt et al.) Shi, 2017
3. Variety Gomphonema constrictum var. ventricosum (Mayer) Shi, 2004
4. Forma Gomphonema constrictum f. elongatum Skvortzov, 2012 (uncertain)
5. Variety Gomphonema constrictum var. tumidum Skvortzov, 2012 (uncertain)
Species Gomphonema curvatum Kützing, 1833 accepted as Rhoicosphenia abbreviata (C.Agardh) Lange-Bertalot, 1980 (Synonym)
1. Variety Gomphonema curvatum var. aquaticum Kützing, 1844 (uncertain > unassessed)
2. Variety Gomphonema curvatum var. beta W. Smith, 1853 (uncertain > unassessed)
3. Variety Gomphonema curvatum var. clavatum (Agardh) Rabenhorst, 1847 accepted as Gomphonema clavatum Agardh (uncertain > unassessed)
4. Variety Gomphonema curvatum var. curvatum Kützing, 1833 (1834) (uncertain > unassessed)
5. Variety Gomphonema curvatum var. flabellatum Kützing, 1849 (uncertain > unassessed)
6. Variety Gomphonema curvatum var. marinum Kützing, 1844 (uncertain > unassessed)
7. Variety Gomphonema curvatum var. pulvinatum Kützing, 1849 (uncertain > unassessed)
8. Variety Gomphonema curvatum var. salinum Kützing, 1844 (uncertain > unassessed)
Species Gomphonema cymbelloides J.Frenguelli & H.A.Orlando, 1958 (unaccepted > nomen nudum, invalidly published)
Species Gomphonema elegans Grunow, 1880 accepted as Gomphoneis elegans (Grunow) Cleve, 1894 † (synonym)
1. Variety Gomphonema elegans var. elegans Grunow in Van Heurck, 1880 (uncertain > unassessed)
2. Variety Gomphonema elegans var. quadripunctata Skvortzow & Meyer, 1928 (uncertain > unassessed)
Species Gomphonema eriense Grunow, 1878 accepted as Gomphoneis eriensis (Grunow) Skvortzov & Meyer, 1928 (synonym)
1. Forma Gomphonema eriense f. baicalense (Skvortzow & Meyer) Proschkina-Lavrenko, 1950 (uncertain > unassessed)
2. Forma Gomphonema eriense f. hastata (Skvortzow & Meyer) Proschkina-Lavrenko, 1950 (uncertain > unassessed)
3. Variety Gomphonema eriense var. acuminata Héribaud, 1903 (uncertain > unassessed)
4. Variety Gomphonema eriense var. baicalensis Skvortzow & Meyer, 1937 (uncertain > unassessed)
5. Variety Gomphonema eriense var. costatum Skvortzov, 2012 (uncertain)
6. Variety Gomphonema eriense var. cuneatum Skvortzov, 2012 (uncertain)
7. Variety Gomphonema eriense var. elongatum Skvortzov, 2012 (uncertain)
8. Variety Gomphonema eriense var. eriense Grunow, 1878 (uncertain > unassessed)
9. Variety Gomphonema eriense var. rostrata M.Schmidt, 1899 (uncertain > unassessed)
Species Gomphonema exiguum Kützing, 1844 accepted as Gomphoneis exigua (Kützing) Medlin (basionym)
1. Variety Gomphonema exiguum var. arctica (Grunow) Cleve
2. Forma Gomphonema exiguum f. subtile I.Kaczmarska, 1985 † (uncertain > unassessed)
3. Variety Gomphonema exiguum var. capitatum Lacsny, 1916 (uncertain > unassessed)
4. Variety Gomphonema exiguum var. digitatum (Kützing) H.F.Van Heurck accepted as Gomphonema digitatum Kützing, 1844 (uncertain > unassessed)
5. Variety Gomphonema exiguum var. elongatum Lacsny, 1916 (uncertain > unassessed)
6. Variety Gomphonema exiguum var. minutissimum Grunow in Van Heurck, 1880 (uncertain > unassessed)
7. Variety Gomphonema exiguum var. pachyclada (Brébisson in Brébisson & Godey) Cleve, 1894 (uncertain > unassessed)
8. Variety Gomphonema exiguum var. perpusilla Grunow in Van Heurck, 1880 (uncertain > unassessed)
9. Variety Gomphonema exiguum var. platypus (Østrup) Lange-Bertalot in Krammer & Lange-Bertalot, 1985 accepted as Gomphonema platypus Østrup, 1910 (uncertain > unassessed)
10. Variety Gomphonema exiguum var. septentrionale (Østrup) Cleve-Euler, 1915 accepted as Gomphonema septentrionale var. septentrionale Østrup, 1895 (uncertain > unassessed)
11. Variety Gomphonema exiguum var. telographicum (Kützing) H.F.Van Heurck accepted as Gomphonema telographicum Kützing, 1844 (uncertain > unassessed)
Species Gomphonema frickei Frenguelli, 1923 accepted as Gomphonema frickei O.Müller, 1905 (Synonym)
1. Variety Gomphonema frickei var. andina Frenguelli, 1942
2. Variety Gomphonema frickei var. frickei Otto Müller, 1905 accepted as Gomphonema frickei O.Müller, 1905 (uncertain > unassessed)
Species Gomphonema geminatum (Lyngbye) C.Agardh, 1824 accepted as Didymosphenia geminata (Lyngbye) M.Schmidt, 1899 (synonym)
1. Variety Gomphonema geminatum var. curvirostra (Tempère & Brun in Brun & Tempère) Cleve, 1894 accepted as Gomphonema curvirostrum Tempère & Brun in Brun & Tempère, 1889 (uncertain > unassessed)
2. Variety Gomphonema geminatum var. hybrida Grunow in Van Heurck, 1880 (uncertain > unassessed)
3. Variety Gomphonema geminatum var. norvegica Holmboe, 1900 (uncertain > unassessed)
4. Variety Gomphonema geminatum var. sibericum Grunow, 1878 (uncertain > unassessed)
Species Gomphonema groenlandicum E.V.Østrup, 1895 accepted as Pseudogomphonema groenlandicum (Østrup) L.K.Medlin, 1986
1. Variety Gomphonema groenlandicum var. clusa M. Peragallo, 1921 (uncertain > unassessed)
2. Variety Gomphonema groenlandicum var. groenlandicum Østrup, 1895 (uncertain > unassessed)
Species Gomphonema herculeanum Ehrenberg, 1845 accepted as Gomphoneis herculeana (Ehrenberg) Cleve, 1894
1. Variety Gomphonema herculeanum var. clavatum (Cleve; M. Schmidt in Schmidt et al.) F.W. Mills, 1934 (uncertain > unassessed)
2. Variety Gomphonema herculeanum var. herculeanum Ehrenberg, 1845 (uncertain > unassessed)
3. Variety Gomphonema herculeanum var. minor McLaughlin & Stone, 1975 (uncertain > unassessed)
4. Variety Gomphonema herculeanum var. oregonicum (Ehrenberg; Ehrenberg) De Toni, 1891 (uncertain > unassessed)
5. Variety Gomphonema herculeanum var. robustum Grunow, 1878 (uncertain > unassessed)
6. Variety Gomphonema herculeanum var. rostrata (Tempère & Peragallo) F.W.Mills, 1934 accepted as Gomphoneis herculeana var. rostrata Tempère & Peragallo, 1909 † (uncertain > unassessed)
7. Variety Gomphonema herculeanum var. septiceps (M.Schmidt) F.W.Mills, 1934 accepted as Gomphoneis herculeana var. septiceps M.Schmidt, 1899 (uncertain > unassessed)
Species Gomphonema kamtschaticum Grunow, 1878 accepted as Pseudogomphonema kamtschaticum (Grunow) L.K.Medlin, 1986 (synonym)
1. Variety Gomphonema kamtschaticum var. antarcticum M. Peragallo, 1921 (uncertain > unassessed)
2. Variety Gomphonema kamtschaticum var. californicum Grunow in Van Heurck, 1880 (uncertain > unassessed)
3. Variety Gomphonema kamtschaticum var. dimidiata M. Schmidt in Schmidt et al., 1899 (uncertain > unassessed)
4. Variety Gomphonema kamtschaticum var. genuinum Cleve-Euler, 1955 (uncertain > unassessed)
5. Variety Gomphonema kamtschaticum var. groenlandica (Østrup) P. Cleve, 1896 accepted as Gomphonema groenlandicum var. groenlandicum Østrup, 1895 (uncertain > unassessed)
6. Variety Gomphonema kamtschaticum var. groenlandicum (Østrup) Østrup, 1897 accepted as Gomphonema groenlandicum var. groenlandicum Østrup, 1895 (uncertain > unassessed)
7. Variety Gomphonema kamtschaticum var. islandicum Østrup, 1918 (uncertain > unassessed)
8. Variety Gomphonema kamtschaticum var. japonica Skvortzow, 1929 (uncertain > unassessed)
9. Variety Gomphonema kamtschaticum var. kamtschaticum Grunow, 1878 (uncertain > unassessed)
10. Variety Gomphonema kamtschaticum var. ovalis Østrup, 1897 (uncertain > unassessed)
11. Variety Gomphonema kamtschaticum var. sibirica Grunow in Cleve & Möller, 1882 (uncertain > unassessed)
12. Variety Gomphonema kamtschaticum var. ventricosum Cleve-Euler, 1955 (uncertain > unassessed)
Species Gomphonema lagenula Kützing, 1844 accepted as Gomphonema parvulum (Kützing) Kützing, 1849
1. Variety Gomphonema lagenula var. lata Comber, 1901 (uncertain > unassessed)
Species Gomphonema lingulatum Hustedt, 1927 accepted as Gomphonema grovei var. lingulatum (Hustedt) Lange-Bertalot, 1985 (Basionym)
1. Variety Gomphonema lingulatum var. constricta Hustedt, 1938 (uncertain > unassessed)
2. Variety Gomphonema lingulatum var. elongatum Skvortzov, 1936 (uncertain > unassessed)
3. Variety Gomphonema lingulatum var. lingulatum Hustedt, 1927 (uncertain > unassessed)
4. Variety Gomphonema lingulatum var. pumila Skvortzow, 1936 (uncertain > unassessed)
5. Variety Gomphonema lingulatum var. stigmata Murobuse, 1941 (uncertain > unassessed)
Species Gomphonema minutissimum Greville, 1827 accepted as Exilaria minutissima (Greville) Berkeley, 1832
1. Variety Gomphonema minutissimum var. exiguum G.L.Rabenhorst (uncertain > unassessed)
2. Variety Gomphonema minutissimum var. marinum Ralfs, 1846 (uncertain > unassessed)
Species Gomphonema mustela Ehrenberg, 1854 accepted as Gomphonema longiceps Ehrenberg, 1854
1. Forma Gomphonema mustela f. curta Van Heurck, 1880 (uncertain > unassessed)
2. Forma Gomphonema mustela f. curvata (Brun & M. Peragallo in Heribaud) Cleve-Euler, 1932 accepted as Gomphonema mustela var. curvata Brun & M. Peragallo in Heribaud, 1893 (uncertain > unassessed)
3. Forma Gomphonema mustela f. curvata (Brun & Peragallo) Cleve-Euler, 1955 (uncertain > unassessed)
4. Forma Gomphonema mustela f. minor M. Peragallo & Heribaud in Heribaud, 1893 (uncertain > unassessed)
5. Forma Gomphonema mustela f. mustela Ehrenberg, 1854 (uncertain > unassessed)
6. Forma Gomphonema mustela f. truncata Cleve-Euler, 1955 (uncertain > unassessed)
7. Forma Gomphonema mustela f. typica Cleve-Euler, 1955 (uncertain > unassessed)
8. Variety Gomphonema mustela var. curvata Brun & M. Peragallo in Heribaud, 1893 (uncertain > unassessed)
9. Variety Gomphonema mustela var. curvata auct. non Brun & Peragallo (uncertain > unassessed)
10. Variety Gomphonema mustela var. mustela Cleve-Euler, 1932 (uncertain > unassessed)
11. Variety Gomphonema mustela var. subclavatum Grunow ex Cleve & Moller, 1878 (uncertain > unassessed)
12. Variety Gomphonema mustela var. vanheurckii Cleve-Euler, 1932 (uncertain > unassessed)
Species Gomphonema obscurum Krasske, 1939 accepted as Gomphonemopsis obscura (Krasske) Lange-Bertalot, 1996 (unaccepted > superseded combination)
Species Gomphonema olivaceoides Hustedt, 1950 accepted as Gomphonema olivaceum var. olivaceoides (Hustedt) Lange-Bertalot, 1989 (synonym)
1. Variety Gomphonema olivaceoides var. cochleariformis Manguin, 1960 (uncertain > unassessed)
2. Variety Gomphonema olivaceoides var. densestriata N.Foged, 1963 (uncertain > unassessed)
3. Variety Gomphonema olivaceoides var. hutchinsoniana Patrick, 1971 (uncertain > unassessed)
4. Variety Gomphonema olivaceoides var. lanceolata Manguin, 1960 (uncertain > unassessed)
5. Variety Gomphonema olivaceoides var. lanceolatum Manguin ex Kociolek & Reviers, 1996 (uncertain > unassessed)
6. Variety Gomphonema olivaceoides var. olivaceoides Hustedt, 1950 (uncertain > unassessed)
7. Variety Gomphonema olivaceoides var. spitsbergensis Foged, 1964 (uncertain > unassessed)
Species Gomphonema pseudexiguum R.Simonsen accepted as Gomphonemopsis pseudexigua (Simonsen) Medlin in Medlin & Round, 1986 (basionym)
Species Gomphonema quadripunctatum (Østrup) Wislouch, 1924 accepted as Gomphoneis quadripunctatum (Østrup) P.Dawson ex R.Ross & P.A.Sims, 1978
1. Forma Gomphonema quadripunctatum f. tumidum Skvortzov & C.I.Meyer (uncertain > unassessed)
2. Variety Gomphonema quadripunctatum var. firma Skvortzow & Meyer, 1928 (uncertain > unassessed)
3. Variety Gomphonema quadripunctatum var. nudum Skvortzow, 1971 (uncertain > unassessed)
4. Variety Gomphonema quadripunctatum var. simplex Skvortzow & Meyer, 1928 (uncertain > unassessed)
Species Gomphonema sarcophagus Gregory, 1856 accepted as Gomphonema angustatum var. sarcophagus (Gregory) Grunow, 1880
1. Forma Gomphonema sarcophagus f. minor Rabenhorst, 1864 (uncertain > unassessed)
2. Forma Gomphonema sarcophagus f. sarcophagus Gregory, 1856 (uncertain > unassessed)
Species Gomphonema septentrionale Østrup, 1895 accepted as Pseudogomphonema septentrionale (Østrup) L.K.Medlin, 1986 (synonym)
1. Variety Gomphonema septentrionale var. angusta Østrup, 1895 (uncertain > unassessed)
2. Variety Gomphonema septentrionale var. claviceps Cleve-Euler, 1955 (uncertain > unassessed)
3. Variety Gomphonema septentrionale var. oestrupii Cleve-Euler, 1955 (uncertain > unassessed)
4. Variety Gomphonema septentrionale var. septentrionale Østrup, 1895 (uncertain > unassessed)
Species Gomphonema sibericum Kulikovskiy, Kociolek & Solak in Kociolek et al., 2018 accepted as Gomphonema lacifrigidum M.Kulikovskiy, J.P.Kociolek & Solak in Kociolek & Guiry, 2018 (illegitimate name; non Gomphonema sibiricum Skvortzov & K.I. Meyer 1928: 26, pl. 2, fig. 90)
Species Gomphonema tenellum Kützing, 1844 accepted as Gomphonema pseudotenellum Lange-Bertalot, 1985
1. Variety Gomphonema tenellum var. micropus (Kützing) G.L.Rabenhorst, 1864 accepted as Gomphonema micropus f. micropus Kützing, 1844 (uncertain > unassessed)
Species Gomphonema turris Ehrenberg, 1843 accepted as Gomphonema augur var. turris (Ehrenberg) Lange-Bertalot, 1985 (synonym)
1. Forma Gomphonema turris f. asiaticum (Skvortzow) Z.X.Shi, 2004
2. Variety Gomphonema turris var. elongatum Z.X. Shi & H.Z. Zhu in Shi, 2004
3. Variety Gomphonema turris var. latum Y.Fan & Q.Wang, 2004
4. Variety Gomphonema turris var. okamurae (Skvortzov) Fan & Bao, 2004
5. Variety Gomphonema turris var. polystigmatica Frenguelli, 1953
6. Variety Gomphonema turris var. sinicum (Skvortzow) Z.X.Shi, 2004
7. Forma Gomphonema turris f. acuminata Frenguelli, 1933 (uncertain > unassessed)
8. Forma Gomphonema turris f. coarctata Frenguelli, 1933 (uncertain > unassessed)
9. Variety Gomphonema turris var. acuminata (Frenguelli) Frenguelli, 1953 (uncertain > unassessed)
10. Variety Gomphonema turris var. apiculatum Grunow, 1865 (uncertain > unassessed)
11. Variety Gomphonema turris var. brasiliensis (Fricke in Schmidt et al.) Frenguelli, 1933 accepted as Gomphonema acuminatum var. brasiliensis Fricke in Schmidt et al., 1902 (uncertain > unassessed)
12. Variety Gomphonema turris var. lineatum Patrick, 1944 (uncertain > unassessed)
13. Variety Gomphonema turris var. nepalense Hirano, 1963 (uncertain > unassessed)
Species Gomphonema vulgare (Kützing) G.L.Rabenhorst, 1864 accepted as Gomphocymbella vulgaris (Kützing) Otto Müller, 1905
1. Variety Gomphonema vulgare var. obtusatum (Kützing) G.L.Rabenhorst, 1864 accepted as Sphenella obtusata Kützing, 1844 (uncertain > unassessed)
Species Gomphonema abbreviatum (Agardh) Kützing, 1833 (uncertain > unassessed)
1. Forma Gomphonema abbreviatum f. abbreviatum Agardh, 1831 (uncertain > unassessed)
2. Forma Gomphonema abbreviatum f. inflata Hustedt, 1953 (uncertain > unassessed)
3. Forma Gomphonema abbreviatum f. minor Krishnamurthy, 1954 (uncertain > unassessed)
4. Variety Gomphonema abbreviatum var. acuminata Héribaud-Joseph (uncertain > unassessed)
5. Variety Gomphonema abbreviatum var. acuminatum Héribaud, 1903 (uncertain > unassessed)
6. Variety Gomphonema abbreviatum var. brasiliense Grunow in Van Heurck, 1880 (uncertain > unassessed)
7. Variety Gomphonema abbreviatum var. brevipes (Kützing) Kützing, 1844 accepted as Gomphonema brevipes Kützing, 1833 (1834) (uncertain > unassessed)
8. Variety Gomphonema abbreviatum var. demerarae Grunow ex Cleve & Moller, 1882 (uncertain > unassessed)
9. Variety Gomphonema abbreviatum var. genuinum Cleve-Euler, 1955 (uncertain > unassessed)
10. Variety Gomphonema abbreviatum var. japonicum Skvortzov & Noda, 1971 (uncertain > unassessed)
11. Variety Gomphonema abbreviatum var. longipes Kützing, 1844 (uncertain > unassessed)
12. Variety Gomphonema abbreviatum var. pulneyensis Krischnamurthy, 1954 (uncertain > unassessed)
13. Variety Gomphonema abbreviatum var. sphenelloides (Rabenhorst) Rabenhorst, 1864 accepted as Gomphonema sphenelloides Rabenhorst, 1853 (uncertain > unassessed)
14. Variety Gomphonema abbreviatum var. typicum Kirchner, 1878 (uncertain > unassessed)
15. Variety Gomphonema abbreviatum var. ventrale M.B. Florin in Cleve-Euler, 1955 (uncertain > unassessed)
Species Gomphonema abbreviatum auct. non Agardh (uncertain > unassessed)
Species Gomphonema accessum Héribaud, 1903 (uncertain > unassessed)
Species Gomphonema acidoclinatiforme D. Metzeltin & H. Lange-Bertalot, 2002 (uncertain > unassessed)
Species Gomphonema acidoclinatum Lange-Bertalot & Reichardt, 2004 (uncertain > unassessed)
Species Gomphonema aciforme Kociolek, Spaulding, Sabbe & Vyverman, 2004 (uncertain > unassessed)
Species Gomphonema aculeiferum Kociolek & Stoermer, 1990 (uncertain > unassessed)
Species Gomphonema acuminatum sensu Grunow in Van Heurck, 1880 (uncertain > unassessed)
Species Gomphonema acutiusculum (O.Müll.) A.Cleve, 1955 accepted as Gomphonema lanceolatum var. acutiuscula Otto Müller, 1898 (uncertain > unassessed)
1. Forma Gomphonema acutiusculum f. minor Foged, 1981 (uncertain > unassessed)
Species Gomphonema adductum Hustedt, 1965 (uncertain > unassessed)
Species Gomphonema aequale Gregory, 1856 (uncertain > unassessed)
Species Gomphonema aequatoriale Hustedt, 1949 (uncertain > unassessed)
Species Gomphonema aequirostrum Metzeltin & Lange-Bertalot, 1998 (uncertain > unassessed)
Species Gomphonema aestuarii Cleve, 1893 (uncertain > unassessed)
Species Gomphonema affinopsis D. Metzeltin, H. Lange-Bertalot & F. García-Rodríguez, 2005 (uncertain > unassessed)
Species Gomphonema afrhombicum E.Reichardt, 2007 (uncertain > unassessed)
Species Gomphonema agnitum Hustedt, 1965 (uncertain > unassessed)
Species Gomphonema alaskaensis E.Manguin ex Kociolek & Reviers, 1996 (uncertain > unassessed)
Species Gomphonema alaskana Patrick & Freese, 1961 (uncertain > unassessed)
Species Gomphonema alaskensis Manguin ex Kociolek & Reviers, 1996 (uncertain > unassessed)
Species Gomphonema alfinitoanum D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain > unassessed)
1. Variety Gomphonema alfinitoanum var. quinquestigmatum D. Metzeltin & H. Lange-Bertalot, 2007 (uncertain > unassessed)
Species Gomphonema alineae Lange-Bertalot & Reichardt in Lange-Bertalot, 1993 (uncertain > unassessed)
Species Gomphonema amerhombicum E.Reichardt, 2007 (uncertain > unassessed)
Species Gomphonema americanum Ehrenberg, 1840 (uncertain > unassessed)
Species Gomphonema americobtusatum E. Reichardt & H. Lange-Bertalot apud E. Reichardt, 1999 (uncertain > unassessed)
Species Gomphonema amoenum Lange-Bertalot, 1985 (uncertain > unassessed)
Species Gomphonema ampullaceum Greville, 1833 (uncertain > unassessed)
Species Gomphonema andinum E.A.Morales & M.L.Vis, 2007 (uncertain > unassessed)
Species Gomphonema anglicum Ehrenberg, 1843 (uncertain > unassessed)
Species Gomphonema anguina (uncertain > unassessed)
1. Variety Gomphonema anguina var. delicatula Grunow, 1867 (uncertain > unassessed)
Species Gomphonema angulare Rogovskaya, 1936 (uncertain > unassessed)
Species Gomphonema angusta (Rabenhorst) (uncertain > unassessed)
Species Gomphonema angustatum (Kützing) Rabenhorst, 1864 (uncertain > unassessed)
1. Forma Gomphonema angustatum f. indica Gandhi, 1960
2. Variety Gomphonema angustatum var. obtusatum (Kützing) Cleve, 1894 accepted as Gomphonema angustatum var. obtusatum (Kützing) Grunow, 1880
3. Variety Gomphonema angustatum var. productum Grunow, 1880 accepted as Gomphonema productum (Grunow) Lange-Bertalot & Reichardt, 1993 (synonym)
4. Forma Gomphonema angustatum f. affine Manguin, 1949 (uncertain > unassessed)
5. Forma Gomphonema angustatum f. angustatum (Kützing) Rabenhorst, 1864 accepted as Sphenella angustata Kützing, 1844 (uncertain > unassessed)
6. Forma Gomphonema angustatum f. breve Mayer, 1919 (uncertain > unassessed)
7. Forma Gomphonema angustatum f. breve Mayer, 1919 (uncertain > unassessed)
8. Forma Gomphonema angustatum f. clinostriatum Cleve-Euler, 1955 (uncertain > unassessed)
9. Forma Gomphonema angustatum f. curta Petersen, 1928 (uncertain > unassessed)
10. Forma Gomphonema angustatum f. distans Komarenko, 1960 (uncertain > unassessed)
11. Forma Gomphonema angustatum f. genuinum Mayer, 1913 (uncertain > unassessed)
12. Forma Gomphonema angustatum f. hetermorpha Cleve-Euler, 1922 (uncertain > unassessed)
13. Forma Gomphonema angustatum f. intermedia Grunow in Van Heurck, 1880 (uncertain > unassessed)
14. Forma Gomphonema angustatum f. kerguelenensis Maillard in Le Cohu & Maillard, 1986 (uncertain > unassessed)
15. Forma Gomphonema angustatum f. major Grunow in Van Heurck, 1880 (uncertain > unassessed)
16. Forma Gomphonema angustatum f. naviculiformis (Mayer) (uncertain > unassessed)
17. Forma Gomphonema angustatum f. producta Grunow, 1880 (uncertain > unassessed)
18. Forma Gomphonema angustatum f. productum (Grunow) Mayer, 1939 (uncertain > unassessed)
19. Forma Gomphonema angustatum f. productum (Grunow) Mayer, 1939 (uncertain > unassessed)
20. Forma Gomphonema angustatum f. sarcophagus (Gregory) Hustedt, 1957 accepted as Gomphonema sarcophagus f. sarcophagus Gregory, 1856 (uncertain > unassessed)
21. Forma Gomphonema angustatum f. typica Cleve-Euler, 1955 (uncertain > unassessed)
22. Forma Gomphonema angustatum f. typica Mayer, 1928 (uncertain > unassessed)
23. Forma Gomphonema angustatum f. typica Mayer, 1928 (uncertain > unassessed)
24. Forma Gomphonema angustatum f. undata Cleve-Euler, 1955 (uncertain > unassessed)
25. Forma Gomphonema angustatum f. undulata (Grunow) Hustedt, 1942 accepted as Gomphonema angustatum var. undulata Grunow ms. in Cleve, 1894 (uncertain > unassessed)
26. Forma Gomphonema angustatum f. undulata Stoermer & Kreis, 1978 (uncertain > unassessed)
27. Variety Gomphonema angustatum var. aequale sensu Brun, 1880 (uncertain > unassessed)
28. Variety Gomphonema angustatum var. aequalis (Gregory) Cleve, 1894 accepted as Gomphonema aequale Gregory, 1856 (uncertain > unassessed)
29. Variety Gomphonema angustatum var. angustatum accepted as Gomphonema angustatum (Kützing) Rabenhorst, 1864 (uncertain > unassessed)
30. Variety Gomphonema angustatum var. angustissima H.F.Van Heurck (uncertain > unassessed)
31. Variety Gomphonema angustatum var. aperta M. Peragallo, 1920 (uncertain > unassessed)

Environment

marine, brackish, fresh, ~~terrestrial~~

Fossil range

recent + fossil

Original description

Ehrenberg, C.G. (1832). Über die Entwickelung und Lebensdauer der Infusionsthiere; nebst ferneren Beiträgen zu einer Vergleichung ihrer organischen Systeme. Abhandlungen der Königlichen Akademie Wissenschaften zu Berlin, Physikalische Klasse. 1831: 1-154. [details]

Taxonomic citation

Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2021). DiatomBase. Gomphonema C.G. Ehrenberg, 1832. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=149553 on 2025-04-03

Taxonomic edit history

Date

action

2005-03-30 08:52:46Z

created

db_admin

2005-07-12 07:24:36Z

changed

Espinel, Nadjejda

2017-02-23 10:36:53Z

changed

Kociolek, John Patrick

2017-04-02 02:13:44Z

changed

Kociolek, John Patrick

[taxonomic tree]

original description Ehrenberg, C.G. (1832). Über die Entwickelung und Lebensdauer der Infusionsthiere; nebst ferneren Beiträgen zu einer Vergleichung ihrer organischen Systeme. Abhandlungen der Königlichen Akademie Wissenschaften zu Berlin, Physikalische Klasse. 1831: 1-154. [details]

basis of record Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]

additional source Round, F.E.; Crawford, R.M.; Mann, D.G. (1990). The diatoms: biology and morphology of the genera. Cambridge University Press: London, UK. ISBN 0-521-363187. 747 pp. (look up in IMIS) [details]

additional source Hällfors, G. (2004). Checklist of Baltic Sea Phytoplankton Species (including some heterotrophic protistan groups). Baltic Sea Environment Proceedings. No. 95: 210 pp., available online at http://helcom.fi/Lists/Publications/BSEP95.pdf [details] Available for editors

[request]

additional source Fourtanier, E. & Kociolek, J. P. (compilers). (2011). Catalogue of Diatom Names. California Academy of Sciences, On-line Version. Updated 2011-09-19., available online at http://researcharchive.calacademy.org/research/diatoms/names/index.asp [details]

Present

Inaccurate

Introduced: alien

Containing type locality

Published in AlgaeBase

To European Nucleotide Archive, ENA (Gomphonema)
To ITIS

Unreviewed

Meunier (1910, pl. 33)