Genus: Desmidium
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1991-09-17 | |
| Skjelbreidvatnet | Vestland, Norway | 2 | 2 | 0 | 1990-09-18 | |
| Svartaholtjørnet | Vestland, Norway | 2 | 1 | 0 | 1996-09-17 | |
| Øvre Storfjordvatnet | Nordland, Norway | 3 | 1 | 0 | 1991-09-04 |