This article presents some interesting floristic data from the survey of forests of the ‘Kis-Sarrét’ and the ‘Körös Plain’ microregions (East Hungary) between 2016 and 2024. This article focuses on species associated with mesophilic forests. The majority of the data presented are from the forests of the ‘Kis-Sarrét’ and the ‘Körös Plain’, including some surprising species new to the southern part of the ‘Tiszántúl’ region, including Corydalis pumila in Bélmegyer and Salvia glutinosa in Körösnagy­harsány. Several species typical of mesophilic forests were also found in these two areas, which are extremely rare in the southern part of ‘Tiszántúl’ region, of which only one or two current occurrences are known (e.g. Allium oleraceum, Carex remota, Hesperis sylvestris and Orchis purpurea). In addition to the most interesting data, I report the occurrence of all species associated with mesophilic forests that are not included in the maps of the online database of Hungarian vascu­lar plants, except for a few common species. The level of detail of the 42 species enumerated varies according to their importance. The more interesting species are described in more detail, while for the more common species, only brief occurrence data are given, with some comments where necessary.