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 | Bacteria | |
| Phylum | Cyanobacteria | |
| Class | Cyanophyceae | |
| Order | Nostocales | |
| Family | Rivulariaceae | |
| Genus | Calothrix |
List of Individual Species - see Taxon profile using the name of the taxa.
| Calothrix antarctica | Fritsch 1912 | ||
| Calothrix braunii | Bornet et Flahault 1886 | ||
| Calothrix brevissima | G.S. West 1907 | ||
| Calothrix epiphytica | W. et G.S. West 1897 | ||
| Calothrix gracilis | Fritsch 1912 | ||
| Calothrix gypsophila | (Kitzing) Thuret em. Poljansky 1949 | Synonym | |
| Calothrix gypsophila f. orsiniana | (Kitzing) V. Poljanski 1934 | Synonym | |
| Calothrix intricata | Fritsch 1912/? | ||
| Calothrix orsiniana | (Kitzing) Thuret 1875 | Synonym | |
| Calothrix parietina | Thuret 1875/? | ||
| Calothrix pulvinata | Agardh ex Bornet et Flahault 1886 | ||
| Calothrix sp. |