Species: Pilblad (Sagittaria sagittifolia)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Nitelva ved Smedstusvingen | Akershus, Norway | 1 | 1 | 0 | 2013-06-07 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1994-09-05 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1989-09-21 |