Betula pubescens (Downy Birch)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Bodin videregående skole | Nordland, Norway | 5 | 1 | 0 | 2021-08-30 |
| Per Torgersen | Akershus, Norway | 5 | 1 | 0 | 2024-05-07 |
| Otterøy skole | Trøndelag, Norway | 5 | 1 | 1 | 2022-09-23 |
| Berge ungdomsskole | Agder, Norway | 5 | 1 | 0 | 2008-06-26 |
| Endre Bleie | Møre og Romsdal, Norway | 5 | 1 | 0 | 2012-03-27 |
| Linesøy skole | Trøndelag, Norway | 5 | 1 | 0 | 2006-04-24 |
| Marianne Iversen | Finnmark, Norway | 5 | 1 | 0 | 2005-01-07 |
| AstriEggen | Vestfold, Norway | 5 | 1 | 0 | 2010-04-29 |
| Hemsedal barne- og ungdomsskule | Buskerud, Norway | 5 | 1 | 0 | 2022-08-25 |
| Gottfred Labakk | Nordland, Norway | 5 | 1 | 0 | 2012-05-17 |
| Sunnylven skule | Møre og Romsdal, Norway | 5 | 1 | 0 | 2022-09-05 |
| Jordet skole | Innlandet, Norway | 5 | 1 | 0 | 2007-06-13 |
| Universitetet i Oslo | Oslo, Norway | 5 | 1 | 0 | 2022-04-22 |
| Tertnes videregående skole | Vestland, Norway | 5 | 1 | 4 | 2015-08-31 |
| Kyrkjekrinsen skole | Vestland, Norway | 4 | 1 | 1 | 2022-09-12 |
| Blussuvoll skole | Trøndelag, Norway | 4 | 1 | 0 | 2013-06-07 |
| Bugøynes Oppvekstsenter/Avdeling skole | Finnmark, Norway | 4 | 1 | 0 | 2004-06-30 |
| Blokkhaugen skole | Vestland, Norway | 4 | 1 | 0 | 2009-06-04 |
| Risøyhamn skole | Nordland, Norway | 4 | 1 | 0 | 2007-04-27 |
| Knappskog skule | Vestland, Norway | 4 | 1 | 0 | 2010-04-30 |
| Jan Askland | Agder, Norway | 4 | 1 | 0 | 2020-04-15 |
| Olaf Hunsdal | Troms, Norway | 4 | 1 | 0 | 2010-05-16 |
| Steigenskolen Leines | Nordland, Norway | 4 | 1 | 0 | 2009-04-23 |
| Kristian Roaldstveit | Akershus, Norway | 4 | 1 | 0 | 2017-05-05 |
| Heikki Fjelldal | Akershus, Norway | 4 | 1 | 0 | 2024-05-01 |
| Per Ole Lunden | Innlandet, Norway | 4 | 1 | 0 | 2021-05-10 |
| Bjørn Magne Brattebø | Rogaland, Norway | 4 | 1 | 0 | 2019-04-22 |
| Brekke skule | Vestland, Norway | 4 | 1 | 0 | 2008-05-08 |
| Saksvik skole | Trøndelag, Norway | 4 | 1 | 0 | 2020-03-31 |
| Fjellgardane skule | Agder, Norway | 4 | 1 | 0 | 2004-06-12 |
| Elly Hardy Bakstad | Vestfold, Norway | 4 | 1 | 0 | 2012-03-29 |
| Stinta skole barne- og Ungdomstrinnet | Agder, Norway | 4 | 1 | 0 | 2022-09-26 |
| Bergen katedralskole | Vestland, Norway | 4 | 2 | 3 | 2023-08-24 |
| Stokke ungdomsskole | Vestfold, Norway | 4 | 1 | 0 | 2002-10-22 |
| Trengereid skule | Vestland, Norway | 4 | 1 | 0 | 2005-04-20 |
| John Skjelseth | Innlandet, Norway | 4 | 1 | 0 | 2013-05-18 |
| Hesnes Montessoriskole | Agder, Norway | 3 | 1 | 0 | 2010-11-02 |
| Vadheim skule | Vestland, Norway | 3 | 1 | 0 | 2003-04-19 |
| Pascale Baudonnel | Vestland, Norway | 3 | 1 | 0 | 2010-05-02 |
| Billefjord Sjøsamiske Oppvekstsenter/Billefjord skole | Finnmark, Norway | 3 | 1 | 1 | 2013-05-22 |
| Hammerbakken skole | Akershus, Norway | 3 | 1 | 0 | 2007-05-04 |
| Inger Tjong | Nordland, Norway | 3 | 1 | 0 | 2009-05-04 |
| Reidar Kvåle | Østfold, Norway | 3 | 1 | 0 | 2011-05-09 |
| elizabeth egner | Akershus, Norway | 3 | 1 | 0 | 2012-04-28 |
| Kirkevoll barne- og ungdomsskole | Vestland, Norway | 3 | 1 | 0 | 2020-05-11 |
| Lene Lindløkken | Møre og Romsdal, Norway | 3 | 1 | 0 | 2017-05-15 |
| Lars Børge Sæberg | Vestland, Norway | 3 | 1 | 1 | 2013-05-11 |
| Trond Helge Jensen | Troms, Norway | 3 | 1 | 0 | 2017-06-10 |
| Daniel Rosenstiel | Møre og Romsdal, Norway | 3 | 1 | 1 | 2011-04-21 |
| Planteforsk Kise | Innlandet, Norway | 3 | 1 | 0 | 2003-10-28 |