Heterothera serraria
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Bekkum, Kvikneskogen | Innlandet, Norway | 1 | 1 | 1 | 2021-07-17 | |
| Bekkumsetra, Øldalen | Innlandet, Norway | 1 | 1 | 0 | 2009-07-03 | |
| Drangedal | Telemark, Norway | 1 | 1 | 1 | 2010-06-10 | |
| Fekjær | Innlandet, Norway | 1 | 1 | 0 | 1980-06-17 | |
| Kløvdalen, Kvikne | Innlandet, Norway | 5 | 1 | 4 | 2018-06-11 | |
| Kvambekkheia | Telemark, Norway | 1 | 1 | 1 | 2012-07-24 | |
| Midtre Øldalen | Innlandet, Norway | 1 | 1 | 1 | 2010-07-14 | |
| Otteid | Østfold, Norway | 1 | 1 | 0 | 2017-06-16 | |
| Otteid (Storedal) | Østfold, Norway | 11 | 1 | 2 | 2019-06-16 | |
| Rogn | Innlandet, Norway | 1 | 1 | 1 | 2013-07-07 | |
| Rogn, Hagane | Innlandet, Norway | 1 | 1 | 1 | 2020-06-20 | |
| Skjedalen | Innlandet, Norway | 1 | 1 | 1 | 2011-07-15 | |
| Smådøladalen | Buskerud, Norway | 1 | 1 | 3 | 2013-07-18 | |