Check-list of additional taxa to the supplement of flora of Turkey X

The 10th in the checklist series, this "Check-list of additional taxa to the supplement flora of Turkey", contains 225 taxa from 193 manuscripts published between January 2019 and December 2021. These taxa are not found in any of the other 11 volumes of `Flora of Turkey' nor in the nine previously published check-lists. The following taxa are now added to the Turkish flora as a result of this paper: 180 taxa new to science and 45 taxa with new records for the Turkish flora.