Viburnum opulus (Guelder-rose)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Gunvor Hustoft | Rogaland, Norway | 25 | 1 | 2 | 2025-04-21 |
| Tove Hamre | Innlandet, Norway | 16 | 1 | 0 | 2019-04-29 |
| Ottar Sætre | Møre og Romsdal, Norway | 11 | 1 | 0 | 2024-05-24 |
| Charlotte Bakke | Telemark, Norway | 2 | 1 | 0 | 2018-05-28 |
| Strandebarm skule | Vestland, Norway | 2 | 1 | 0 | 2023-10-03 |
| Sælen Oppveksttun avd skole | Vestland, Norway | 2 | 1 | 0 | 2016-04-21 |
| Nils Battin | Agder, Norway | 1 | 1 | 0 | 2024-05-29 |
| Grevlingen skole og kultursenter | Akershus, Norway | 1 | 1 | 0 | 2006-08-23 |
| Anders Røynstrand | Vestland, Norway | 1 | 1 | 0 | 2008-05-04 |
| Nordisk Naturskule Eidfjord | Vestland, Norway | 1 | 1 | 0 | 2007-05-06 |
| Doris Brekke | Telemark, Norway | 1 | 1 | 8 | 2010-06-30 |
| Stiftinga Sunnmøre Museum, avd. Sykkylven Naturhistoriske Museum | Møre og Romsdal, Norway | 1 | 1 | 0 | 2010-09-01 |