| Nitzschia sp. | | 2006-09-26 | 2006-09-05 | Skatestraumen (Vestland, Norway) |
| Nitzschia sp. | | 1989-09-04 | 1989-09-04 | Molbekktjernet (Østfold, Norway) |
| Nitzschia sp. | | 1989-09-20 | 1989-09-20 | Sagtjernet (Innlandet, Norway) |
| Nitzschia sp. | | 1989-09-25 | 1989-09-25 | Myklebustvannet (Møre og Romsdal, Norway) |
| Nitzschia sp. | | 1991-10-14 | 1991-10-14 | Stavsjø (Innlandet, Norway) |
| Nitzschia sp. | | 1989-09-14 | 1989-09-14 | Hostadvatnet (Møre og Romsdal, Norway) |
| Nitzschia sp. | | 1989-09-13 | 1989-09-13 | Reinsvolldammen (Innlandet, Norway) |
| Nitzschia sp. | | 1989-09-15 | 1989-09-15 | Elgtjern (Trøndelag, Norway) |