Colocasia
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|
| Frode Falkenberg | Vestland, Norway | 78 | 1 | 9 | 2019-06-07 |
| Even Mjaaland | Rogaland, Norway | 40 | 1 | 5 | 2017-06-11 |
| Ivar Stormo | Østfold, Norway | 36 | 1 | 7 | 2019-05-26 |
| Svein Sellevold Bekkum | Nordland, Norway | 27 | 1 | 13 | 2021-05-15 |
| Dag Øivind Ingierd | Akershus, Norway | 19 | 1 | 6 | 2019-05-17 |
| Sveinung Sigbjørnsen | Vestland, Norway | 13 | 1 | 8 | 2024-05-25 |
| Alf Tore Mjøs | Rogaland, Norway | 11 | 1 | 3 | 2019-05-20 |
| Anders Lundberg | Vestland, Norway | 9 | 1 | 7 | 2019-05-18 |
| Kjell Mjølsnes | Rogaland, Norway | 9 | 1 | 2 | 2012-05-27 |
| John Skartveit | Vestland, Norway | 7 | 1 | 1 | 2024-05-24 |
| Olav Krogsæter | Vestland, Norway | 7 | 1 | 4 | 2014-06-05 |
| Leiv Tommas Haugen | Rogaland, Norway | 7 | 1 | 0 | 2019-05-22 |
| John Grønning | Rogaland, Norway | 5 | 1 | 2 | 2013-06-08 |
| Eli Gates | Akershus, Norway | 3 | 1 | 3 | 2018-05-31 |
| Øyvind Stickler | Vestfold, Norway | 3 | 1 | 3 | 2022-06-06 |
| Eivind Nielsen | Rogaland, Norway | 2 | 1 | 1 | 2016-05-11 |
| Christer Kamsvåg | Møre og Romsdal, Norway | 2 | 1 | 1 | 2017-06-14 |
| John Stenersen | Nordland, Norway | 1 | 1 | 2 | 2014-05-22 |
| Turid og Jarle Bakken | Møre og Romsdal, Norway | 1 | 1 | 1 | 2024-05-25 |
| Egil Frantzen | Vestland, Norway | 1 | 1 | 2 | 2008-05-25 |
| Ole Terland | Vestland, Norway | 1 | 1 | 1 | 2024-05-19 |
| Fredrik Birkeland | Rogaland, Norway | 1 | 1 | 1 | 2016-05-11 |
| Jan-Erik Olsen | Østfold, Norway | 1 | 1 | 1 | 2019-04-24 |
| Ola Moen | Vestland, Norway | 1 | 1 | 1 | 2013-05-30 |
| Geirr O Pedersen | Akershus, Norway | 1 | 1 | 0 | 2011-05-11 |
| Kjell Tore Vogsland | Telemark, Norway | 1 | 1 | 1 | 2009-05-26 |