Species: Pediastrum duplex
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Akersvannet | Vestfold, Norway | 3 | 1 | 0 | 1993-09-16 | |
| Dælivannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-07 | |
| Hammervatnet | Trøndelag, Norway | 3 | 1 | 0 | 1994-06-18 | |
| Jarenvannet | Innlandet, Norway | 1 | 1 | 0 | 1989-08-29 | |
| Ljøgodttjern | Akershus, Norway | 2 | 1 | 0 | 1993-08-30 | |
| Midsjøvannet | Akershus, Norway | 1 | 1 | 0 | 1992-09-23 | |
| Prestvatn | Agder, Norway | 1 | 1 | 0 | 1991-06-10 | |
| Tornesvatnet | Rogaland, Norway | 2 | 1 | 0 | 1991-09-13 | |
| Vålåsjøen | Innlandet, Norway | 1 | 1 | 0 | 1990-06-07 | |
| Årungen | Akershus, Norway | 4 | 1 | 0 | 1994-09-08 | |