Cirsium vulgare
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Stryn vidaregåande skule | Vestland, Norway | 21 | 1 | 11 | 2023-09-12 |
| Tove Hamre | Innlandet, Norway | 7 | 1 | 0 | 2019-07-26 |
| Gunvor Hustoft | Rogaland, Norway | 6 | 1 | 0 | 2023-07-09 |
| Kirkebygden barne- og ungdomsskole | Akershus, Norway | 4 | 1 | 3 | 2022-09-16 |
| Ottar Sætre | Møre og Romsdal, Norway | 2 | 1 | 0 | 2019-07-19 |
| Lunner barneskole | Akershus, Norway | 1 | 1 | 1 | 2013-08-28 |
| Eikeli videregående skole | Akershus, Norway | 1 | 1 | 0 | 2014-08-27 |
| Åge Arntzen | Vestland, Norway | 1 | 1 | 0 | 2010-09-19 |
| Stranda vidaregåande skule | Møre og Romsdal, Norway | 1 | 1 | 1 | 2014-09-11 |