Equisetum hyemale
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Nils Battin | Agder, Norway | 3 | 1 | 0 | 2024-04-30 |
| Fauske videregående skole | Nordland, Norway | 2 | 1 | 0 | 1990-09-04 |
| Midt-Østerdal videregående skole/Koppang | Innlandet, Norway | 1 | 1 | 0 | 1989-09-14 |
| Leksvik videregående skole | Trøndelag, Norway | 1 | 1 | 0 | 2004-09-14 |
| Stiftinga Sunnmøre Museum, avd. Sykkylven Naturhistoriske Museum | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-06-10 |
| Anne-Bente Zumach | Telemark, Norway | 1 | 1 | 0 | 2014-04-06 |