| Euastrum sp. | | 1996-09-25 | 1996-09-25 | Ulfsbakktjønn (Vestfold, Norway) |
| Euastrum sp. | | 1994-09-12 | 1994-09-12 | Lauvtjønna (Trøndelag, Norway) |
| Euastrum sp. | | 1991-09-06 | 1991-09-06 | Lauvtjønna (Trøndelag, Norway) |
| Euastrum sp. | | 1990-05-30 | 1990-05-30 | Lauvtjønna (Trøndelag, Norway) |
| Euastrum sp. | | 1996-09-17 | 1996-09-17 | Svartaholtjørnet (Vestland, Norway) |
| Euastrum sp. | | 1994-05-18 | 1994-05-18 | Svartaholtjørnet (Vestland, Norway) |
| Euastrum sp. | | 1989-09-21 | 1989-09-21 | Svartaholtjørnet (Vestland, Norway) |
| Euastrum sp. | | 1989-09-15 | 1989-09-15 | Auklandsvatnet (Rogaland, Norway) |
| Euastrum sp. | | 1989-09-06 | 1989-09-06 | Longvatnet (Rogaland, Norway) |
| Euastrum sp. | | 1990-06-07 | 1990-06-07 | Vålåsjøen (Innlandet, Norway) |
| Euastrum sp. | | 1990-06-07 | 1990-06-07 | Vålåsjøen (Innlandet, Norway) |
| Euastrum sp. | | 1991-05-31 | 1991-05-31 | Kruktjønna (Trøndelag, Norway) |
| Euastrum sp. | | 1990-06-07 | 1990-06-07 | Tussvatnet (Nordland, Norway) |
| Euastrum sp. | | 1990-06-07 | 1990-06-07 | Tussvatnet (Nordland, Norway) |
| Euastrum sp. | | 1991-06-18 | 1991-06-18 | Rundvannet (Troms, Norway) |
| Euastrum sp. | | 1990-06-07 | 1990-06-07 | Arkavatnet (Rogaland, Norway) |
| Euastrum sp. | | 1989-08-28 | 1989-08-28 | Arkavatnet (Rogaland, Norway) |
| Euastrum sp. | | 1990-06-01 | 1990-06-01 | Krussætertjern (Østfold, Norway) |
| Euastrum sp. | | 1990-06-01 | 1990-06-01 | Krussætertjern (Østfold, Norway) |
| Euastrum sp. | | 1990-08-30 | 1990-08-30 | Øvre Storfjordvatnet (Nordland, Norway) |
| Euastrum sp. | | 1990-09-18 | 1990-09-18 | Åstveitvannet (Vestland, Norway) |
| Euastrum sp. | | 1990-09-18 | 1990-09-18 | Åstveitvannet (Vestland, Norway) |
Sustain.no is provided by the Norwegian Centre for Science Education