1. Species Nitzschia amphibia Grunow, 1862
2. Species Nitzschia fasciculata (Grunow) Grunow, 1881
3. Species Nitzschia frustulum (Kützing) Grunow, 1880
4. Species Nitzschia lanceolata W.Smith, 1853
5. Species Nitzschia linearis W.Smith, 1853
6. Species Nitzschia longissima (Brébisson) Ralfs, 1861
7. Species Nitzschia lorenziana Grunow, 1879
8. Species Nitzschia majuscula Grunow
9. Species Nitzschia obtusa W.Smith, 1853
10. Species Nitzschia palea (Kützing) W.Smith, 1856
11. Species Nitzschia sigmoidea (Nitzsch) W.Smith, 1853
12. Species Nitzschia sigmatella Gregory, 1854 accepted as Stenopterobia sigmatella (Gregory) R. Ross in Hartley, 1986 accepted as Nitzschia sigmatella var. sigmatella Gregory, 1855 (synonym)
13. Species Nitzschia acula (Kützing) Hantzsch, 1861 accepted as Synedra acula Kützing, 1844 (uncertain > unassessed)
14. Species Nitzschia bicapitata Cleve, 1901 (uncertain > unassessed)
15. Species Nitzschia constricta (Gregory) Grunow, 1880 accepted as Psammodictyon constrictum f. parvum (Grunow) Belegratis, Louvrou & Economou-Amilli, 2012 (uncertain > unassessed)
16. Species Nitzschia didyma Hustedt, 1952 (uncertain > unassessed)
17. Species Nitzschia fonticola Grunow, 1879 accepted as Nitzschia palea var. fonticola Grunow, 1879 (uncertain > unassessed)
18. Species Nitzschia fruticosa Hustedt, 1957 (uncertain > unassessed)
19. Species Nitzschia gracillima Heiden & Kolbe, 1928 (uncertain > unassessed)
20. Species Nitzschia granulata Grunow, 1880 (uncertain > unassessed)
21. Species Nitzschia marginulata Grunow, 1880 (uncertain > unassessed)
22. Species Nitzschia pacifica Cupp, 1943 (uncertain > unassessed)
23. Species Nitzschia panduriformis sensu Hustedt in Schmidt et al., 1921 (uncertain > unassessed)
24. Species Nitzschia petitiana Grunow, 1880 (uncertain > unassessed)
25. Species Nitzschia romana Grunow, 1881 accepted as Nitzschia palea var. romana Grunow, 1880 (uncertain > unassessed)
26. Species Nitzschia scalpelliformis Grunow, 1880 (uncertain > unassessed)
27. Species Nitzschia sigma (Kützing) W.Smith, 1853 (uncertain > unassessed)

marine, brackish, fresh, terrestrial

Hassall, A.H. (1845). A history of the British Freshwater Algae (including descriptions of the Diatomaceae and Desmidiaceae) with upwards of one hundred Plates. I. Text. <em>Taylor, Walton, and Maberly, London.</em> 462 pp. [details] 

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. (2025). DiatomBase. Nitzschia A.H. Hassall, 1845. Accessed through: Astudillo, J. C.; Williams, G. A.; Leung, K. M. Y.; Cannicci, S.; Yasuhara, M.; Yau, C.; Qiu, J-W.; Ang, P. O.; To, A. W. L.; Shea, S. K. H. (Eds.) (2025) Hong Kong Register of Marine Species at: https://marinespecies.org/hkrms/aphia.php?p=taxdetails&id=149045 on 2025-06-02

Astudillo, J. C.; Williams, G. A.; Leung, K. M. Y.; Cannicci, S.; Yasuhara, M.; Yau, C.; Qiu, J-W.; Ang, P. O.; To, A. W. L.; Shea, S. K. H. (Eds.) (2025). Hong Kong Register of Marine Species. Nitzschia A.H. Hassall, 1845. Accessed at: https://marinespecies.org/hkrms/aphia.php?p=taxdetails&id=149045 on 2025-06-02

[taxonomic tree]