Staurastrum arachne
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Vest-Lofoten videregående skole / Lofoten Maritime Fagskole | Nordland, Norway | 2 | 1 | 0 | 1990-05-25 |
| Sogndal vidaregåande skule | Vestland, Norway | 1 | 1 | 0 | 1989-09-21 |