1. Species Schizonema pumilum C.Agardh, 1827
2. Species Schizonema setaceum (Kützing) Meneghini, 1853
3. Species Schizonema tenue C.Agardh, 1827
4. Species Schizonema cruciger W. Smith, 1856 accepted as Schizonema crucigerum W.Smith, 1856 accepted as Haslea crucigera (W.Smith) Simonsen, 1974 accepted as Schizonema cruciger f. cruciger W. Smith, 1856
5. Species Schizonema crucigerum W.Smith, 1856 accepted as Haslea crucigera (W.Smith) Simonsen, 1974 accepted as Schizonema cruciger f. cruciger W. Smith, 1856 (synonym)
6. Species Schizonema ramosissimum C.Agardh, 1824 accepted as Navicula ramosissima (C.Agardh) Cleve, 1895 (synonym)
7. Species Schizonema rutilans (Trentepohl ex Roth) Agardh, 1824 accepted as Berkeleya rutilans (Trentepohl ex Roth) Grunow, 1880 (synonym)
8. Species Schizonema smithii C.Agardh, 1824 accepted as Navicula bottnica Grunow, 1880 (synonym)
9. Species Schizonema adriaticum C.Agardh, 1830 (uncertain > unassessed)
10. Species Schizonema alpha (P.T.Cleve) Kuntze, 1898 accepted as Navicula alpha Cleve, 1893 (uncertain > unassessed)
11. Species Schizonema ambiguum (Cleve) Kuntze, 1898 (uncertain > unassessed)
12. Species Schizonema amphioxys (Gregory) Kuntze, 1898 accepted as Stauroneis amphioxys var. amphioxys Gregory, 1856 (uncertain > unassessed)
13. Species Schizonema asperum (Ehrenberg) Kuntze, 1898 accepted as Navicula aspera Ehrenberg, 1840 (uncertain > unassessed)
14. Species Schizonema bivittatum (Pantocsek) Kuntze, 1898 accepted as Navicula bivittata var. bivittata Pantocsek, 1889 (uncertain > unassessed)
15. Species Schizonema bottnicum (Grunow) Kuntze, 1898 accepted as Navicula bottnica Grunow, 1880 (uncertain > unassessed)
16. Species Schizonema bulnheimii (Grunow) Kuntze, 1898 accepted as Navicula bulnheimii var. bulnheimii Grunow, 1880 (uncertain > unassessed)
17. Species Schizonema cinctum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia cincta Ehrenberg, 1854 (uncertain > unassessed)
18. Species Schizonema clementis (Grunow) Kuntze, 1898 accepted as Navicula clementis var. clementis Grunow, 1882 accepted as Placoneis clementis (Grunow) E.J.Cox, 1987 (uncertain > unassessed)
19. Species Schizonema crucicula (W.Smith) Kuntze, 1898 accepted as Stauroneis crucicula W.Smith, 1853 (uncertain > unassessed)
20. Species Schizonema cryptocephalum (Kützing) Kuntze, 1898 accepted as Navicula cryptocephala f. cryptocephala Kützing, 1844 (uncertain > unassessed)
21. Species Schizonema delawarense (Grunow) Kuntze, 1898 accepted as Navicula delawarensis Grunow ex Cleve, 1893 (uncertain > unassessed)
22. Species Schizonema elegans (W.Smith) Kuntze, 1898 accepted as Navicula elegans f. elegans W. Smith, 1853 (uncertain > unassessed)
23. Species Schizonema ellipticum (Kützing) Kuntze, 1898 accepted as Navicula elliptica f. elliptica Kützing, 1844 (uncertain > unassessed)
24. Species Schizonema epsilon (P.T.Cleve) C.E.O.Kuntze, 1898 accepted as Navicula epsilon Cleve, 1893 (uncertain > unassessed)
25. Species Schizonema formosum (Gregory) Kuntze, 1898 accepted as Navicula formosa var. formosa Gregory, 1856 (uncertain > unassessed)
26. Species Schizonema gregarium (Donkin) Kuntze, 1898 accepted as Navicula gregaria var. gregaria Donkin, 1861 (uncertain > unassessed)
27. Species Schizonema halophilum (Grunow) Kuntze, 1898 accepted as Navicula cuspidata var. halophila Grunow, 1885 (uncertain > unassessed)
28. Species Schizonema humerosum (Brébisson ex W. Smith) Kuntze, 1898 accepted as Navicula humerosa f. humerosa Brébisson ex W. Smith, 1856 (uncertain > unassessed)
29. Species Schizonema incertum (Grunow) Kuntze, 1898 accepted as Navicula incerta f. incerta Grunow in Van Heurck, 1880 (uncertain > unassessed)
30. Species Schizonema inflexum (Gregory) Kuntze, 1898 accepted as Pinnularia inflexa Gregory, 1856 (uncertain > unassessed)
31. Species Schizonema interruptum (Cleve) Kuntze, 1898 accepted as Navicula interrupta var. interrupta Kützing, 1844 (uncertain > unassessed)
32. Species Schizonema latissimum (Gregory) Kuntze, 1898 accepted as Navicula latissima f. latissima Gregory, 1856 (uncertain > unassessed)
33. Species Schizonema lepidulum (Grunow) Kuntze, 1898 accepted as Navicula lepidula Grunow, 1880 (uncertain > unassessed)
34. Species Schizonema liber (W.Smith) Kuntze, 1898 accepted as Navicula liber f. liber W. Smith, 1853 (uncertain > unassessed)
35. Species Schizonema lyra (Ehrenberg) Kuntze, 1898 accepted as Navicula lyra f. lyra Ehrenberg, 1843 (uncertain > unassessed)
36. Species Schizonema maculosum (Donkin) Kuntze, 1898 accepted as Navicula maculosa Donkin, 1871 (uncertain > unassessed)
37. Species Schizonema nivale (Ehrenberg) Kuntze, 1898 accepted as Navicula nivalis var. nivalis Ehrenberg, 1853 (uncertain > unassessed)
38. Species Schizonema ovale Kuntze, 1898 (uncertain > unassessed)
39. Species Schizonema palpebrale (Brébisson ex W.Smith) Kuntze, 1898 accepted as Navicula palpebralis f. palpebralis Brebisson in litt., W. Smith, 1853 (uncertain > unassessed)
40. Species Schizonema peregrinum (Ehrenberg) Kuntze, 1898 accepted as Pinnularia peregrina var. peregrina Ehrenberg, 1843 (uncertain > unassessed)
41. Species Schizonema permagnum (Bailey) Kuntze, 1898 accepted as Pinnularia permagna Bailey, 1851 (uncertain > unassessed)
42. Species Schizonema powellii (Lewis) Kuntze, 1898 accepted as Navicula powellii var. powellii Lewis, 1862 (uncertain > unassessed)
43. Species Schizonema prostratum (Berkeley) Greville, 1833 accepted as Monema prostratum Berkeley, 1832 (uncertain > unassessed)
44. Species Schizonema pusillum (W.Smith) Kuntze, 1898 accepted as Navicula pusilla f. pusilla W. Smith, 1853 (uncertain > unassessed)
45. Species Schizonema pygmaeum (Kützing) Kuntze, 1898 accepted as Navicula pygmaea var. pygmaea Kützing, 1849 (uncertain > unassessed)
46. Species Schizonema radiatum C.Agardh, 1827 (uncertain > unassessed)
47. Species Schizonema rhynchocephala (Kützing) Kuntze, 1898 accepted as Navicula rhynchocephala f. rhynchocephala Kützing, 1844 (uncertain > unassessed)
48. Species Schizonema salinarum (Grunow) Kuntze, 1898 accepted as Navicula salinarum Grunow, 1880 (uncertain > unassessed)
49. Species Schizonema salinum (W.Smith) Kuntze, 1898 accepted as Stauroneis salina f. salina W. Smith, 1853 (uncertain > unassessed)
50. Species Schizonema spicula (W.J.Hickie) Kuntze, 1898 accepted as Stauroneis spicula Cleve & Grunow, 1880 (uncertain > unassessed)
51. Species Schizonema wardii (Cleve) Kuntze, 1898 accepted as Caloneis wardii Cleve, 1894 (uncertain > unassessed)
52. Species Schizonema yarrense (Grunow) Kuntze, 1898 accepted as Navicula yarrensis var. yarrensis Grunow in Schmidt et al., 1876 (uncertain > unassessed)
53. Species Schizonema zeta (Cleve) Kuntze, 1898 accepted as Navicula zeta var. zeta Cleve, 1895 (uncertain > unassessed)

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