Heterothera serraria
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Ivar Stormo | Østfold, Norway | 11 | 1 | 2 | 2019-06-16 |
| Svein Sellevold Bekkum | Nordland, Norway | 9 | 1 | 7 | 2021-07-17 |
| Even Mjaaland | Rogaland, Norway | 2 | 1 | 1 | 2017-06-16 |
| Nils Rogn | Innlandet, Norway | 2 | 1 | 2 | 2020-06-20 |
| Leiv Tommas Haugen | Rogaland, Norway | 1 | 1 | 0 | 1980-06-17 |
| Ola Moen | Vestland, Norway | 1 | 1 | 3 | 2013-07-18 |
| Kjell Tore Vogsland | Telemark, Norway | 1 | 1 | 1 | 2010-06-10 |