| Tjernaks (Potamogeton natans) | | 1989-09-14 | 1989-09-14 | Tussvatnet (Nordland, Norway) |  |
| Broddtjernaks (Potamogeton friesii) | | 1989-09-14 | 1989-09-14 | Tussvatnet (Nordland, Norway) | |
| Busttjernaks (Potamogeton pectinatus) | | 1989-09-15 | 1989-09-15 | Nøklevann (Oslo, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-15 | 1989-09-15 | Nøklevann (Oslo, Norway) | |
| Tjernaks (Potamogeton natans) | | 1994-09-05 | 1994-09-05 | Nøklevann (Oslo, Norway) | |
| Nøkketjernaks (Potamogeton praelongus) | | 1994-09-05 | 1994-09-05 | Nøklevann (Oslo, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-05 | 1989-09-05 | Nøklevann (Oslo, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-05 | 1989-09-05 | Nøklevann (Oslo, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-05 | 1989-09-05 | Haukvatnet (Trøndelag, Norway) | |
| Grastjernaks (Potamogeton gramineus) | | 1989-09-05 | 1989-09-05 | Mosvatnet (Rogaland, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-10-11 | 1989-10-11 | Rørvatnet (Møre og Romsdal, Norway) | |
| Tjernaks (Potamogeton natans) | | 1994-05-27 | 1994-05-27 | Ledengstjern (Østfold, Norway) | |
| Grastjernaks (Potamogeton gramineus) | | 1994-05-27 | 1994-05-27 | Ledengstjern (Østfold, Norway) | |
| Småtjernaks (Potamogeton berchtoldii) | | 1994-05-27 | 1994-05-27 | Ledengstjern (Østfold, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-01 | 1989-09-01 | Kolbjørnviksjøen (Østfold, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-13 | 1989-09-13 | Reinsvolldammen (Innlandet, Norway) | |
| Kysttjønnaks (Potamogeton polygonifolius) | | 1989-09-06 | 1989-09-06 | Rossevatn (Rogaland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-06 | 1989-09-06 | Rossevatn (Rogaland, Norway) | |
| Grastjernaks (Potamogeton gramineus) | | 1989-09-06 | 1989-09-06 | Rossevatn (Rogaland, Norway) | |
| Krustjernaks (Potamogeton crispus) | | 1993-09-02 | 1993-09-02 | Kvitblikkvannet (Nordland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-14 | 1989-09-14 | Kvitblikkvannet (Nordland, Norway) | |
| Hjertetjernaks (Potamogeton perfoliatus) | | 1989-09-14 | 1989-09-14 | Kvitblikkvannet (Nordland, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-14 | 1989-09-14 | Kjemsjøen (Innlandet, Norway) | |
| Hjertetjernaks (Potamogeton perfoliatus) | | 1989-09-14 | 1989-09-14 | Sillongen (Innlandet, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-14 | 1989-09-14 | Sillongen (Innlandet, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-08-31 | 1989-08-31 | Raudsjøen (Trøndelag, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-14 | 1989-09-14 | Oltervatnet (Nordland, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-14 | 1989-09-14 | Oltervatnet (Nordland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-06 | 1989-09-06 | Korssjøen (Vestfold, Norway) | |
| Busttjernaks (Potamogeton pectinatus) | | 1989-09-12 | 1989-09-12 | Rundvannet (Troms, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-15 | 1989-09-15 | Elgtjern (Trøndelag, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-15 | 1989-09-15 | Elgtjern (Trøndelag, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-13 | 1989-09-13 | Skjelbreidvatnet (Vestland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-07 | 1989-09-07 | Tornesvatnet (Rogaland, Norway) | |
| Broddtjernaks (Potamogeton friesii) | | 1989-09-07 | 1989-09-07 | Tornesvatnet (Rogaland, Norway) | |
| Grastjernaks (Potamogeton gramineus) | | 1989-09-07 | 1989-09-07 | Tornesvatnet (Rogaland, Norway) | |
| Hjertetjernaks (Potamogeton perfoliatus) | | 1989-09-07 | 1989-09-07 | Tornesvatnet (Rogaland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-08-28 | 1989-08-28 | Arkavatnet (Rogaland, Norway) | |
| Hjertetjernaks (Potamogeton perfoliatus) | | 1989-08-28 | 1989-08-28 | Arkavatnet (Rogaland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1994-09-14 | 1994-09-14 | Liavatnet (Vestland, Norway) | |
| Krustjernaks (Potamogeton crispus) | | 1989-08-31 | 1989-08-31 | Langavatnet (Vestland, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-08-31 | 1989-08-31 | Langavatnet (Vestland, Norway) | |
| Grastjernaks (Potamogeton gramineus) | | 1989-09-01 | 1989-09-01 | Øvre Storfjordvatnet (Nordland, Norway) | |
| Butt-tjernaks (Potamogeton obtusifolius) | | 1989-09-01 | 1989-09-01 | Øvre Storfjordvatnet (Nordland, Norway) | |
| Småtjernaks (Potamogeton berchtoldii) | | 1989-09-01 | 1989-09-01 | Øvre Storfjordvatnet (Nordland, Norway) | |
| Rusttjernaks (Potamogeton alpinus) | | 1989-09-01 | 1989-09-01 | Øvre Storfjordvatnet (Nordland, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-07 | 1989-09-07 | Åstveitvannet (Vestland, Norway) | |
| Tjønnaks (Potamogeton sp.) | | 1989-09-06 | 1989-09-06 | Hjørungdalsvatnet (Møre og Romsdal, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-06 | 1989-09-06 | Hjørungdalsvatnet (Møre og Romsdal, Norway) | |
| Tjernaks (Potamogeton natans) | | 1989-09-27 | 1989-09-27 | Laupen (Innlandet, Norway) | |
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