1. Species Fragilaria alternata Frenguelli, 1941
2. Species Fragilaria construens (Ehrenberg) Grunow, 1862
3. Species Fragilaria islandica Grunow ex Van Heurck, 1881
4. Species Fragilaria istvanffyi Pantocsek, 1902
5. Species Fragilaria oblongata Drebes & Schultz
6. Species Fragilaria striatula Lyngbye, 1819
7. Species Fragilaria antarctica Castracane, 1886 accepted as Fragilariopsis kerguelensis (O'Meara) Hustedt, 1952 accepted as Terebraria kerguelensis E.O'Meara, 1876 †
8. Species Fragilaria antarctica van Heurck, 1909 accepted as Fragilariopsis obliquecostata (van Heurck) Heiden, 1928 (synonym)
9. Species Fragilaria arctica Grunow, 1880 accepted as Fragilariopsis oceanica (Cleve) Hasle, 1965 accepted as Fragilaria oceanica f. oceanica Cleve, 1873
10. Species Fragilaria linearis Castracane, 1886 accepted as Fragilariopsis linearis (Castracane) Frenguelli, 1943 accepted as Fragilaria linearis f. linearis Castracane, 1886 (synonym)
11. Species Fragilaria longirostris Frenguelli, 1941 accepted as Staurosira longirostris (Frenguelli) Metzeltin, Lange-Bertalot & García-Rodríguez
12. Species Fragilaria mutabilis (W.Smith) Grunow, 1862 accepted as Staurosirella pinnata var. intercedens (Grunow) P.B.Hamilton, 1994 accepted as Fragilaria mutabilis var. intercedens Grunow, 1881 (synonym)
13. Species Fragilaria obliquecostata van Heurck, 1909 accepted as Fragilariopsis obliquecostata (van Heurck) Heiden, 1928 (synonym)
14. Species Fragilaria oceanica Cleve, 1873 accepted as Fragilariopsis oceanica (Cleve) Hasle, 1965 accepted as Fragilaria oceanica f. oceanica Cleve, 1873 (basionym)
15. Species Fragilaria pacifica Grunow, 1862 accepted as Opephora pacifica (Grunow) Petit, 1888 (synonym)
16. Species Fragilaria virescens Ralfs, 1843 accepted as Fragilariforma virescens (Ralfs) D.M.Williams & Round, 1988 (basionym)
17. Species Fragilaria curta Van Heurck, 1909 (uncertain > unassessed)
18. Species Fragilaria cylindrus Grunow, 1883 (uncertain > unassessed)
19. Species Fragilaria dilatata (Brébisson) Lange-Bertalot, 1993 accepted as Frustulia dilatata Brébisson, 1838 (uncertain > unassessed)
20. Species Fragilaria fasciculata (C.Agardh) Lange-Bertalot, 1980 accepted as Tabularia fasciculata (C.Agardh) D.M.Williams & Round, 1986 (uncertain > unassessed, homotypic synonym)
21. Species Fragilaria geocollegarum Witkowski & Lange-Bertalot, 1995 (uncertain > unassessed)
22. Species Fragilaria gessneri Hustedt, 1956 (uncertain > unassessed)
23. Species Fragilaria guenter-grassii Witkowski & Lange-Bertalot, 1993 accepted as Staurosirella guenter-grassii (Witkowski & Lange-Bert.) E.Morales, C.E.Wetzel & Ector, 2019 (uncertain > unassessed)
24. Species Fragilaria heidenii Østrup, 1910 accepted as Staurosira inflata (Heiden) A.Rusanov, Ács, E. Morales & Ector in Rusanov et al., 2018 (uncertain > unassessed)
25. Species Fragilaria karstenii Boden, 1950 (uncertain > unassessed)
26. Species Fragilaria kerguelensis (O'Meara) Cleve, 1901 accepted as Terebraria kerguelensis E.O'Meara, 1876 † (uncertain > unassessed)
27. Species Fragilaria longissima Hustedt, 1913 (uncertain > unassessed)
28. Species Fragilaria martyi (Héribaud-Joseph) Lange-Bertalot, 1993 accepted as Opephora martyi f. martyi Héribaud, 1902 (uncertain > unassessed)
29. Species Fragilaria mesodon Ehrenberg, 1839 (uncertain > unassessed)
30. Species Fragilaria nana Steemann Nielsen, 1935 (uncertain > unassessed)
31. Species Fragilaria neoelliptica A.Witkowski, 1994 (uncertain > unassessed)
32. Species Fragilaria oblonga Drebes & Schulz, 1990 (uncertain > unassessed)
33. Species Fragilaria opephoroides Takano, 1988 accepted as Serratifera opephoroides (Takano) Chunlian Li & Witkowski, 2018 (uncertain > unassessed)
34. Species Fragilaria pectinalis (O.F.Müller) Lyngbye, 1819 (uncertain > unassessed)
35. Species Fragilaria pulchella (Ralfs ex Kützing) Lange-Bertalot, 1980 accepted as Exilaria pulchella Ralfs ex Kützing, 1844 (uncertain > unassessed)
36. Species Fragilaria quebecensis (Poulin, Hudon & Cardinal) A.Witkowski, H.Lange-Bertalot & D.Metzeltin, 2000 (uncertain > unassessed)
37. Species Fragilaria schwartzii Grunow, 1863 (uncertain > unassessed)
38. Species Fragilaria shiloi J.J.Lee, Reimer & McEnery, 1980 (uncertain > unassessed)
39. Species Fragilaria subsalina (Grunow) Lange-Bertalot, 1993 accepted as Fragilaria virescens f. subsalina Grunow in Van Heurck, 1881 (uncertain > unassessed)
40. Species Fragilaria tabulata (C.Agardh) Lange-Bertalot, 1981 accepted as Tabularia tabulata (C.Agardh) Snoeijs, 1992 (uncertain > unassessed)
41. Species Fragilaria toxoneides (Castracane) Lange-Bertalot, 1980 accepted as Synedra toxoneides var. toxoneides Castracane, 1880 (uncertain > unassessed)
42. Species Fragilaria trigibba Pantocsek, 1902 (uncertain > unassessed)
43. Species Fragilaria unipunctata Lyngbye, 1819 (uncertain > unassessed)
44. Species Fragilaria vanheurckii Peragallo, 1921 (uncertain > unassessed)
45. Species Fragilaria zasuminensis Cabejszekówna, 1937 (uncertain > unassessed)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License