Polysiphonia
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Arendal | Agder, Norway | 3 | 1 | 3 | 2014-05-14 | |
| bjellandstrand | Agder, Norway | 1 | 1 | 1 | 2014-05-14 | |
| Bjellandstrand | Agder, Norway | 6 | 2 | 6 | 2016-06-08 | |
| bjellandstrand | Agder, Norway | 1 | 1 | 1 | 2014-05-14 | |
| Bjellandstrand | Agder, Norway | 1 | 1 | 1 | 2014-05-14 | |
| Bjellandstrand | Agder, Norway | 2 | 1 | 2 | 2014-05-14 | |
| Drøbak | Akershus, Norway | 1 | 1 | 1 | 2014-04-22 | |
| Dybdalstrand | Agder, Norway | 7 | 3 | 7 | 2017-09-20 | |
| Espegrend | Vestland, Norway | 1 | 1 | 1 | 2014-04-07 | |
| Espegrend | Vestland, Norway | 1 | 1 | 0 | 2001-01-24 | |
| Gandsfjord vest | Rogaland, Norway | 1 | 1 | 0 | 2000-05-09 | |
| Hundvåg | Rogaland, Norway | 1 | 1 | 0 | 1999-10-18 | |
| Torvangerfjæra | Vestland, Norway | 1 | 1 | 0 | 2002-10-08 |