Aesculus hippocastanum (Horse-chestnut)
| Deltaker | Kommune (fylke) | Ant. obs. | Ant. arter | Ant. bilder | Siste obs. |
|---|---|---|---|---|---|
| Rune Nilsen | Agder, Norway | 29 | 1 | 0 | 2024-05-24 |
| Ingar Granholt | Vestfold, Norway | 11 | 1 | 1 | 2022-04-20 |
| Tove Hamre | Innlandet, Norway | 9 | 1 | 0 | 2019-05-06 |
| Charlotte Bakke | Telemark, Norway | 8 | 1 | 0 | 2024-05-19 |
| Vålerenga skole | Oslo, Norway | 7 | 1 | 8 | 2022-09-30 |
| Stiftelsen Soon Sjøskole | Akershus, Norway | 5 | 1 | 9 | 2022-10-12 |
| Sandvollan skole | Trøndelag, Norway | 4 | 1 | 3 | 2010-06-07 |
| Nordnes skole | Vestland, Norway | 4 | 1 | 6 | 2010-06-10 |
| Hellerud videregående skole | Oslo, Norway | 4 | 1 | 2 | 2021-10-25 |
| Akademiet Sandnes | Rogaland, Norway | 3 | 1 | 3 | 2014-04-17 |
| Søreide skole | Vestland, Norway | 3 | 1 | 0 | 2010-05-04 |
| Skolelaboratoriet i realfag, UiB | Vestland, Norway | 3 | 1 | 6 | 2010-04-21 |
| Re videregående skole | Vestfold, Norway | 2 | 1 | 0 | 2022-09-09 |
| Danielsen ungdomsskule Osterøy AS | Vestland, Norway | 2 | 1 | 1 | 2022-09-28 |
| Ole Andreas Brekkemoen | Agder, Norway | 2 | 1 | 0 | 2019-04-25 |
| Jørpeland ungdomsskole | Rogaland, Norway | 2 | 1 | 2 | 2014-06-03 |
| Løvås Oppveksttun/Avd skole | Vestland, Norway | 2 | 1 | 2 | 2014-05-22 |
| Flekkefjord vgs | Agder, Norway | 1 | 1 | 0 | 2014-05-26 |
| Gunvor Hustoft | Rogaland, Norway | 1 | 1 | 0 | 2024-05-26 |
| Fjelltun skole | Rogaland, Norway | 1 | 1 | 0 | 2022-09-09 |
| Granvin barne- og Undomsskule | Vestland, Norway | 1 | 1 | 1 | 2022-10-04 |
| Kjell Arne Olsen | Vestfold, Norway | 1 | 1 | 0 | 2022-05-11 |
| Cicignon skole | Østfold, Norway | 1 | 1 | 0 | 2013-09-05 |