Genus: Hazel (Corylus)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Almåselv | Vestland, Norway | 1 | 1 | 0 | 2015-08-31 | |
| Almåselv | Vestland, Norway | 1 | 1 | 1 | 2015-08-31 | |
| Auklandshamn | Vestland, Norway | 3 | 1 | 0 | 2004-04-10 | |
| Balderheim | Vestland, Norway | 8 | 1 | 0 | 2013-03-18 | |
| Bildøy | Vestland, Norway | 4 | 1 | 0 | 2005-08-29 | |
| Bjørkelangen | Akershus, Norway | 3 | 2 | 0 | 2023-03-27 | |
| Blokknummer 80 | Møre og Romsdal, Norway | 2 | 1 | 0 | 2001-06-14 | |
| Boknabergsvatnet | Rogaland, Norway | 1 | 1 | 0 | 2003-03-27 | |
| borge | Telemark, Norway | 1 | 1 | 0 | 2011-05-16 | |
| Borgundnuten/Fjelberg | Vestland, Norway | 1 | 1 | 0 | 2005-04-15 | |
| Bratsbergkleiva skole | Telemark, Norway | 1 | 1 | 0 | 2020-03-24 | |
| Bråte skole | Akershus, Norway | 1 | 1 | 0 | 2023-04-13 | |
| Bukta | Møre og Romsdal, Norway | 1 | 1 | 0 | 2007-04-17 | |
| Bybaneskogen | Vestland, Norway | 1 | 1 | 0 | 2012-05-22 | |
| Bygdøy | Oslo, Norway | 1 | 1 | 1 | 2019-03-18 | |
| Drangedal | Telemark, Norway | 1 | 1 | 0 | 2010-04-12 | |
| Dyreveien 129 | Østfold, Norway | 2 | 1 | 0 | 2020-01-28 | |
| Dæliveien 3 | Akershus, Norway | 2 | 1 | 0 | 2024-04-24 | |
| Eide | Vestland, Norway | 1 | 1 | 0 | 2009-03-20 | |
| Elverhøy | Rogaland, Norway | 1 | 1 | 0 | 2005-08-31 | |
| Enge | Vestland, Norway | 46 | 1 | 0 | 2024-04-28 | |
| Engly, Nedre Utgård | Østfold, Norway | 1 | 1 | 0 | 2020-03-06 | |
| Farmannsveien 30 | Vestfold, Norway | 3 | 1 | 0 | 2022-09-02 | |
| Fjell | Vestland, Norway | 1 | 1 | 0 | 2010-04-10 | |
| Flostranda naturreservat | Vestland, Norway | 1 | 1 | 0 | 2013-06-12 | |
| Flåtten | Telemark, Norway | 6 | 1 | 0 | 2022-04-23 | |
| Fortunaveien | Vestfold, Norway | 2 | 1 | 0 | 2011-03-21 | |
| Framnes | Vestfold, Norway | 1 | 1 | 0 | 2010-04-13 | |
| Fyresdal Kåsa sør | Telemark, Norway | 2 | 1 | 0 | 2016-03-23 | |
| Gansrøbukta | Østfold, Norway | 1 | 1 | 1 | 2008-02-12 | |
| Gauselskogen | Rogaland, Norway | 4 | 2 | 1 | 2022-09-06 | |
| Gauselskogen | Rogaland, Norway | 1 | 1 | 0 | 2021-09-03 | |
| Gjellumvannet | Akershus, Norway | 1 | 1 | 0 | 2005-05-23 | |
| Grebstadlia | Møre og Romsdal, Norway | 1 | 1 | 0 | 2010-09-01 | |
| Grenland | Telemark, Norway | 8 | 1 | 0 | 2009-05-12 | |
| Gresvig | Østfold, Norway | 2 | 1 | 0 | 2012-05-04 | |
| Griggastemma | Vestland, Norway | 1 | 1 | 1 | 2015-09-01 | |
| Hallelia | Møre og Romsdal, Norway | 1 | 1 | 0 | 2008-02-23 | |
| Hareid | Møre og Romsdal, Norway | 2 | 1 | 0 | 2008-10-09 | |
| Heer | Akershus, Norway | 1 | 1 | 0 | 2024-03-11 | |
| Heiabakkane 163 | Rogaland, Norway | 1 | 1 | 0 | 2022-09-09 | |
| Helleland skole | Rogaland, Norway | 1 | 1 | 0 | 2014-09-29 | |
| Herøy | Møre og Romsdal, Norway | 1 | 1 | 0 | 2008-07-17 | |
| Hjelle | Vestland, Norway | 1 | 1 | 0 | 2008-03-20 | |
| Hovdeåsen | Møre og Romsdal, Norway | 1 | 1 | 0 | 2008-02-17 | |
| Hovedbygget | Telemark, Norway | 1 | 1 | 0 | 2008-03-05 | |
| Hovet | Telemark, Norway | 1 | 1 | 0 | 2016-03-08 | |
| Hundremeterskogen | Vestfold, Norway | 2 | 1 | 0 | 2001-05-10 | |
| Hustoft gnr. 150/4 | Rogaland, Norway | 34 | 2 | 1 | 2024-04-13 | |
| Hølaløkka | Oslo, Norway | 1 | 1 | 0 | 2014-03-18 | |