Betula pubescens (Downy Birch)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Øksendalsøra | Møre og Romsdal, Norway | 1 | 1 | 0 | 2008-04-18 | |
| Øren skole | Buskerud, Norway | 2 | 1 | 0 | 2008-04-29 | |
| Ørland III | Trøndelag, Norway | 2 | 1 | 0 | 2006-06-20 | |
| Ørskogkvia | Møre og Romsdal, Norway | 2 | 1 | 0 | 2010-06-08 | |
| Østlandet | Oslo, Norway | 1 | 1 | 0 | 2007-04-19 | |
| Østre Kvelde | Vestfold, Norway | 1 | 1 | 0 | 2008-04-22 | |
| Øvre Brenn | Innlandet, Norway | 1 | 1 | 0 | 2018-05-10 | |
| Øvre Maudal | Rogaland, Norway | 4 | 1 | 0 | 2019-04-22 | |
| Øvre Ottestad | Innlandet, Norway | 1 | 1 | 0 | 2008-04-29 | |
| Øvre Tollevikveien | Finnmark, Norway | 1 | 1 | 0 | 2021-06-03 | |
| Øvrehagen | Rogaland, Norway | 25 | 1 | 0 | 2007-05-20 | |
| Øya | Telemark, Norway | 1 | 1 | 0 | 2010-04-24 | |
| Øya i Mosjøen | Nordland, Norway | 1 | 1 | 0 | 2007-05-17 | |
| Å barneskole | Agder, Norway | 1 | 1 | 0 | 2008-04-28 | |
| Åbøgrend | Telemark, Norway | 2 | 1 | 0 | 2020-04-28 | |
| Ådland | Rogaland, Norway | 1 | 1 | 0 | 2001-05-21 | |
| Åmot | Telemark, Norway | 1 | 1 | 0 | 2007-04-27 | |
| Åmot sentrum | Telemark, Norway | 2 | 1 | 0 | 2020-05-06 | |
| Årnesvegen 307 | Trøndelag, Norway | 5 | 1 | 1 | 2022-09-23 | |
| Årvik | Rogaland, Norway | 1 | 1 | 0 | 2007-04-20 | |
| ås | Akershus, Norway | 1 | 1 | 0 | 2007-04-17 | |
| Åsen, Blylaget | Akershus, Norway | 1 | 1 | 0 | 2007-04-25 | |
| Åsgårdstrand | Vestfold, Norway | 1 | 1 | 0 | 2001-04-05 | |
| Åstveitvannet | Vestland, Norway | 2 | 1 | 0 | 2007-06-06 |