Genus: Calothrix
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Bergvikvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-18 | |
| Buvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Elgtjern | Trøndelag, Norway | 1 | 1 | 0 | 1989-10-27 | |
| Lauvtjønna | Trøndelag, Norway | 1 | 1 | 0 | 1990-05-30 | |
| Spildervatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-20 |
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