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 | Scytonemataceae | |
| Genus | Plectonema |
List of Individual Species - see Taxon profile using the name of the taxa.
| Plectonema battersii | Gom. | ||
| Plectonema boryanum | Gom. | ||
| Plectonema nostocorum | Bornet in Bornet et Thuret 1880 | Synonym | |
| Plectonema notatum | Schmidle | ||
| Plectonema sp. |