Potamogeton alpinus
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Kvinnherad vidaregåande skule | Vestland, Norway | 2 | 1 | 0 | 1993-06-09 |
| Vest-Lofoten videregående skole / Lofoten Maritime Fagskole | Nordland, Norway | 1 | 1 | 0 | 1989-09-01 |
| Tingvoll vidaregåande skole | Møre og Romsdal, Norway | 1 | 1 | 0 | 1994-10-11 |
| Skolelaboratoriet, NTNU | Trøndelag, Norway | 1 | 1 | 0 | 2004-08-14 |