Species: Knotgrass (Polygonum aviculare)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 1 | 1 | 1 | 1 |
| 2023 | 1 | 1 | 1 | 1 |
| 2022 | 1 | 1 | 1 | 1 |
| 2021 | 1 | 1 | 1 | 1 |
| 2020 | 1 | 1 | 1 | 1 |
| 2019 | 1 | 1 | 1 | 1 |
| 2018 | 1 | 1 | 1 | 1 |
| 2016 | 1 | 1 | 1 | 1 |
| 2015 | 1 | 1 | 1 | 1 |
| 2014 | 1 | 1 | 1 | 1 |
| 2013 | 1 | 3 | 2 | 3 |
| 2012 | 1 | 3 | 2 | 3 |
| 2011 | 1 | 1 | 1 | 1 |
| 2010 | 1 | 1 | 1 | 1 |
| 2009 | 1 | 1 | 1 | 1 |
| Totalt alle år | 1 | 4 | 3 | 19 |
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