Species: Trådsiv (Juncus filiformis)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Arkavatnet | Rogaland, Norway | 1 | 1 | 0 | 1989-08-28 | |
| Bergvikvatnet | Nordland, Norway | 2 | 1 | 0 | 1989-09-18 | |
| Buvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-12 | |
| Eikedokktjernet | Buskerud, Norway | 1 | 1 | 0 | 1990-06-06 | |
| Harestuvannet | Akershus, Norway | 1 | 1 | 0 | 1990-09-04 | |
| Kolbjørnviksjøen | Østfold, Norway | 1 | 1 | 0 | 1989-09-01 | |
| Ledengstjern | Østfold, Norway | 1 | 1 | 0 | 1994-05-27 | |
| Longvatnet | Rogaland, Norway | 1 | 1 | 0 | 1990-06-01 | |
| Nøklevann | Oslo, Norway | 1 | 1 | 0 | 1989-09-15 | |
| Skarvatnet | Møre og Romsdal, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Slondal | Vestland, Norway | 1 | 1 | 0 | 2016-08-26 | |
| Stavsjø | Innlandet, Norway | 1 | 1 | 0 | 1989-09-05 | |