At any stage, you can move up or down the Taxonomic hierachy of Antarctic/subantarctic species by clicking on any name. Lower level taxon counts are shown in [].
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| Kingdom | Chromista | |
| Phylum | Bacillariophyta | |
| Class | Bacillariophyceae | |
| Order | Bacillariales | |
| Family | Bacillariaceae | |
| Genus | Nitzschia |
List of Individual Species - see Taxon profile using the name of the taxa.
| Nitzschia amphibia | Grunow 1862 | ||
| Nitzschia amphibia var. ocutiuscula | Grunow in Cleve et Grunow 1880 | Synonym | |
| Nitzschia amphioxys | (Ehrenberg) W. Smith 1853 | Synonym | |
| Nitzschia amphioxys var. major | (Grunow in Van Heurck) Mayer 1913 | Synonym | |
| Nitzschia angulata | (O'Meara) Hasle 1972 | Synonym | |
| Nitzschia angustata | (W. Smith) Grunow in Cleve et Grunow 1880 | ||
| Nitzschia antarctica | Okuno 1954/? | ||
| Nitzschia barronii | R. Gersonde | ||
| Nitzschia brebissoni | W. Smith 1853 | Synonym | |
| Nitzschia closterium | (Ehrenberg) W. Smith 1853 | ||
| Nitzschia commutata | Grunow in Cleve et Grunow 1880 | ||
| Nitzschia compressa | (Bailey) Boyer 1916 | ||
| Nitzschia constricta | (Kitzing) Ralfs in Pritchard 1861 | ||
| Nitzschia curta | (Van Heurck) Hasle 1972 | Synonym | |
| Nitzschia cylindrus | (Grunow) Hasle 1972 | Synonym | |
| Nitzschia dissipata | (Kitzing) Grunow 1862 | ||
| Nitzschia dubia | Wm. Smith 1853 | ||
| Nitzschia dubia var. australis | M. Peragallo 1921 | ||
| Nitzschia filiformis | (W. Smith) Van Heurck 1896 | ||
| Nitzschia fonticola | Grunow in Cleve et M÷ller 1879 | ||
| Nitzschia frustulum | (Kitzing) Grunow in Cleve et Grunow 1880 | ||
| Nitzschia frustulum var. perminuta | Grunow 1881 | Synonym | |
| Nitzschia frustulum var. subsalina | Hustedt 1925 | Synonym | |
| Nitzschia gracilis | Hantzsch 1860 | ||
| Nitzschia interfrigidaria | |||
| Nitzschia kerguelensis | (O'Meara) Hasle 1972 | Synonym | |
| Nitzschia lecointei | Van Heurck | ||
| Nitzschia lecointei | Van Heurck 1909 | ||
| Nitzschia marginulata | Grunow in Cleve et M÷ller 1878 | Synonym | |
| Nitzschia microcephala | Grunow in Cleve et M÷ller 1878/? | ||
| Nitzschia minuta | Bleisch 1863 | Synonym | |
| Nitzschia minutissima | W. Smith 1853 | Synonym | |
| Nitzschia obliquecostata | (Van Heurck) Hasle 1972 | Synonym | |
| Nitzschia obtusa var. scalpelliformis | Grunow in Cleve et M÷ller 1879 | Synonym | |
| Nitzschia palea | (Kitzing) W. Smith 1856 | ||
| Nitzschia palea var. debilis | (Kitzing) Grunow in Van Heurck 1880-1885 | Synonym | |
| Nitzschia palea var. fonticola | Grunow in Cleve et M÷ller 1879 | Synonym | |
| Nitzschia palea var. romana | (Grunow in Van Heurck) M. Peragallo 1903 | Synonym | |
| Nitzschia perminuta | Grunow | ||
| Nitzschia praecurta | R. Gersonde | ||
| Nitzschia praeinterfrigidaria | McCollum 1975 | Synonym | |
| Nitzschia punctata | Bailey 1861 | Synonym | |
| Nitzschia ritscheri | (Hustedt) Hasle 1972 | Synonym | |
| Nitzschia romana | (Grunow) Grunow in Van Heurck 1880-1885 | Synonym | |
| Nitzschia scalpelliformis | (Grunow) Grunow in Cleve et Grunow 1880 | ||
| Nitzschia separanda | (Hustedt) Hasle 1972 | Synonym | |
| Nitzschia sp. B | |||
| Nitzschia spectabilis | (Ehrenberg) Ralfs in Pritchard 1861 | Synonym | |
| Nitzschia sublinearis | Hustedt 1930 | ||
| Nitzschia subtilis | Grunow in Cleve et Grunow 1880 | ||
| Nitzschia vivax var. elongata | Hantzsch 1860 | Synonym | |
| Nitzschia westii | Kellogg et Kellogg in Kellogg et al. 1980 |