Species: Småpiggknopp (Sparganium minimum)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Bergvikvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-09-18 | |
| Rossevatn | Rogaland, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Ulfsbakktjønn | Vestfold, Norway | 1 | 1 | 0 | 1996-09-25 |