Species: The Fern (Horisme tersata)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Andersbånnveien | Vestfold, Norway | 2 | 1 | 1 | 2017-07-11 | |
| Bandaksjøen | Telemark, Norway | 1 | 1 | 0 | 2009-06-27 | |
| Beverøya Camping | Telemark, Norway | 1 | 1 | 1 | 2011-07-03 | |
| Blika | Telemark, Norway | 1 | 1 | 0 | 2009-06-28 | |
| Blika gruver | Telemark, Norway | 1 | 1 | 1 | 2009-06-28 | |
| Buøy | Telemark, Norway | 1 | 1 | 0 | 2015-07-05 | |
| Drangedal | Telemark, Norway | 1 | 1 | 1 | 2008-06-25 | |
| Eidsborg | Telemark, Norway | 5 | 1 | 2 | 2017-07-19 | |
| Glitre | Akershus, Norway | 1 | 1 | 0 | 1979-06-16 | |
| Grindvoll i Lunner | Akershus, Norway | 3 | 1 | 2 | 2011-06-21 | |
| Hasselgården, Jomfruland | Telemark, Norway | 2 | 1 | 0 | 2015-07-12 | |
| Kraftstasjonen, Eidsborg | Telemark, Norway | 1 | 1 | 0 | 2011-06-06 | |
| Lauvik,Bandak | Telemark, Norway | 1 | 1 | 1 | 2010-06-01 | |
| Otteid | Østfold, Norway | 2 | 1 | 0 | 2017-06-16 | |
| Otteid (Storedal) | Østfold, Norway | 39 | 1 | 6 | 2019-07-06 | |
| Øytangen, Jomfruland | Telemark, Norway | 1 | 1 | 0 | 2015-07-12 | |