Klasse: Grønnalger (Chlorophyceae)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Moensvatnet | Vestland, Norway | 12 | 9 | 0 | 1994-11-01 | |
| Molbekktjernet | Østfold, Norway | 8 | 7 | 0 | 1990-09-13 | |
| mortenveien | Rogaland, Norway | 1 | 1 | 0 | 2018-09-30 | |
| Mosvatnet | Rogaland, Norway | 60 | 31 | 0 | 1994-09-28 | |
| Myklavatnet | Vestland, Norway | 3 | 3 | 0 | 1993-09-14 | |
| Myklebustvannet | Møre og Romsdal, Norway | 23 | 18 | 0 | 1991-06-03 | |
| Myravatnet | Vestland, Norway | 1 | 1 | 0 | 1989-09-14 | |
| Mørkvedbukta, Fjæra | Nordland, Norway | 2 | 1 | 1 | 2014-10-09 | |
| Naustrekka | Vestland, Norway | 1 | 1 | 1 | 2021-06-17 | |
| Nautnes | Vestland, Norway | 1 | 1 | 0 | 2007-07-16 | |
| Nautnes | Vestland, Norway | 1 | 1 | 0 | 2014-09-16 | |
| Nordre Eigerøy | Rogaland, Norway | 5 | 2 | 0 | 1997-06-04 | |
| Norevikane, Høyanger | Vestland, Norway | 1 | 1 | 0 | 2009-06-10 | |
| Nøklevann | Oslo, Norway | 22 | 20 | 0 | 1990-09-11 | |
| Nøklevatnet | Innlandet, Norway | 3 | 3 | 0 | 1989-09-14 | |
| Oltervatnet | Nordland, Norway | 3 | 3 | 0 | 1989-09-14 | |
| Opsangervatnet | Vestland, Norway | 2 | 1 | 0 | 1990-09-26 | |
| Osen | Nordland, Norway | 1 | 1 | 0 | 2010-05-19 | |
| paradisbukta | Agder, Norway | 6 | 4 | 0 | 2021-08-31 | |
| pollen | Vestland, Norway | 32 | 4 | 9 | 2019-06-13 | |
| Prestvatn | Agder, Norway | 4 | 4 | 0 | 1994-09-12 | |
| Raudsjøen | Trøndelag, Norway | 22 | 13 | 0 | 1994-09-19 | |
| Reiarsvatnet | Rogaland, Norway | 17 | 12 | 0 | 1991-09-16 | |
| Reinsvolldammen | Innlandet, Norway | 9 | 9 | 0 | 1989-09-13 | |
| Rolfsbukta, Fornebu | Akershus, Norway | 2 | 2 | 0 | 2010-08-25 | |
| Rossevatn | Rogaland, Norway | 29 | 27 | 0 | 1993-05-25 | |
| Rotvoll/Leangen fjæra | Trøndelag, Norway | 15 | 3 | 15 | 2019-08-23 | |
| Rotvollfjæra | Trøndelag, Norway | 11 | 2 | 0 | 2017-09-05 | |
| Runde | Møre og Romsdal, Norway | 2 | 1 | 0 | 2013-05-23 | |
| Rundvannet | Troms, Norway | 44 | 21 | 0 | 1994-09-10 | |
| Røldalstjørnet | Vestland, Norway | 15 | 12 | 0 | 1993-06-08 | |
| Rørvatnet | Møre og Romsdal, Norway | 58 | 30 | 0 | 1994-09-07 | |
| Sageneset | Vestland, Norway | 23 | 5 | 2 | 2003-09-15 | |
| Sagtjernet | Innlandet, Norway | 19 | 11 | 0 | 1994-10-04 | |
| Sandholna | Vestland, Norway | 15 | 5 | 3 | 2019-05-24 | |
| Sandvika | Trøndelag, Norway | 1 | 1 | 1 | 2018-05-28 | |
| Seljebøvatnet | Møre og Romsdal, Norway | 6 | 5 | 0 | 1993-06-14 | |
| Semsvannet | Akershus, Norway | 5 | 5 | 0 | 1993-05-26 | |
| Sennsjøen | Innlandet, Norway | 4 | 4 | 0 | 1996-09-10 | |
| Sillongen | Innlandet, Norway | 16 | 11 | 0 | 1990-05-22 | |
| Sjøbadet, Myklebust | Rogaland, Norway | 1 | 1 | 1 | 2020-09-08 | |
| Skarvatnet | Møre og Romsdal, Norway | 13 | 13 | 0 | 1993-06-16 | |
| Skattval | Trøndelag, Norway | 1 | 1 | 0 | 2020-06-10 | |
| Skinnarvatnet | Agder, Norway | 1 | 1 | 0 | 2002-06-12 | |
| Skjelbreidvatnet | Vestland, Norway | 26 | 26 | 0 | 1991-06-06 | |
| Skottevik | Agder, Norway | 2 | 1 | 2 | 2013-09-11 | |
| Slidrefjorden | Innlandet, Norway | 1 | 1 | 0 | 2012-05-16 | |
| Småvågane | Rogaland, Norway | 3 | 3 | 0 | 2016-06-10 | |
| Sognsvann | Oslo, Norway | 1 | 1 | 0 | 2005-05-19 | |
| Solveig fjæra | Troms, Norway | 1 | 1 | 0 | 2017-09-01 | |
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