Genus: Euastrum
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Arkavatnet | Rogaland, Norway | 6 | 3 | 0 | 1994-09-12 | |
| Auklandsvatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Bogstadvannet | Oslo, Norway | 1 | 1 | 0 | 1993-09-16 | |
| Elgtjern | Trøndelag, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Håskjoldtjern | Møre og Romsdal, Norway | 1 | 1 | 0 | 1993-09-16 | |
| Knurrvatnet | Nordland, Norway | 1 | 1 | 0 | 1989-08-30 | |
| Kruktjønna | Trøndelag, Norway | 1 | 1 | 0 | 1991-05-31 | |
| Krussætertjern | Østfold, Norway | 2 | 1 | 0 | 1990-06-01 | |
| Laupen | Innlandet, Norway | 2 | 1 | 0 | 1993-10-04 | |
| Lauvtjønna | Trøndelag, Norway | 6 | 3 | 0 | 1994-09-12 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-09-06 | |
| Mosvatnet | Rogaland, Norway | 3 | 1 | 0 | 1994-09-28 | |
| Prestvatn | Agder, Norway | 1 | 1 | 0 | 1994-09-12 | |
| Raudsjøen | Trøndelag, Norway | 2 | 1 | 0 | 1990-08-31 | |
| Rundvannet | Troms, Norway | 6 | 3 | 0 | 1994-06-10 | |
| Rørvatnet | Møre og Romsdal, Norway | 6 | 3 | 0 | 1994-06-21 | |
| Skarvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Spildervatnet | Nordland, Norway | 1 | 1 | 0 | 1994-06-02 | |
| Stordammen | Akershus, Norway | 1 | 1 | 0 | 1989-09-08 | |
| Svartaholtjørnet | Vestland, Norway | 4 | 2 | 0 | 1996-09-17 | |
| Trytetjønnet | Buskerud, Norway | 2 | 2 | 0 | 1990-09-26 | |
| Tussvatnet | Nordland, Norway | 2 | 1 | 0 | 1990-06-07 | |
| Tveitavatnet | Vestland, Norway | 1 | 1 | 0 | 1991-05-23 | |
| Ulfsbakktjønn | Vestfold, Norway | 1 | 1 | 0 | 1996-09-25 | |
| Vålåsjøen | Innlandet, Norway | 4 | 3 | 0 | 1990-06-07 | |
| Øvre Storfjordvatnet | Nordland, Norway | 1 | 1 | 0 | 1990-08-30 | |
| Årungen | Akershus, Norway | 1 | 1 | 0 | 1994-09-08 | |
| Åstveitvannet | Vestland, Norway | 2 | 1 | 0 | 1990-09-18 | |