Family: Elm (Ulmaceae)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 1 | 3 | 3 | 4 |
| 2023 | 1 | 1 | 1 | 4 |
| 2022 | 1 | 12 | 10 | 19 |
| 2021 | 2 | 3 | 3 | 6 |
| 2020 | 1 | 5 | 4 | 5 |
| 2019 | 2 | 3 | 3 | 4 |
| 2018 | 1 | 5 | 5 | 7 |
| 2017 | 2 | 2 | 2 | 2 |
| 2016 | 1 | 3 | 3 | 5 |
| 2015 | 2 | 4 | 4 | 7 |
| 2014 | 2 | 3 | 3 | 4 |
| 2013 | 2 | 2 | 2 | 4 |
| 2012 | 1 | 2 | 2 | 5 |
| 2011 | 1 | 6 | 4 | 8 |
| 2010 | 1 | 1 | 1 | 1 |
| 2009 | 1 | 2 | 2 | 3 |
| 2008 | 1 | 5 | 4 | 5 |
| 2007 | 1 | 3 | 2 | 3 |
| 2006 | 1 | 3 | 3 | 4 |
| 2005 | 1 | 4 | 4 | 4 |
| 2004 | 1 | 2 | 2 | 2 |
| 2003 | 1 | 1 | 1 | 1 |
| Totalt alle år | 4 | 42 | 33 | 107 |