Localities: Lauvtjønna: 30.05.1990
| Reporter: | Malvik videregående skole |
| Site: | Lauvtjønna () |
| Date: | 1990-05-30 |
| Activity: | VANDA: Påvekstalger |
Observation
| Species: | Calothrix sp. |
| Number: | 1 |
| Original: | Ja |
| Species: | Mougeotia sp. |
| Number: | 1 |
| Original: | Ja |
| Species: | Zygnema sp. |
| Number: | 1 |
| Original: | Ja |