The "systematic part" of the monograph is compiled according to the original system, it describes the species, varieties and forms of agaric mushrooms. Some species are given that were not found on the territory of the republic, but can be identified during further studies, as they are found in neighboring republics and neighboring countries. One of the results of our research still cannot reflect the completeness and diversity of the species composition of agaric mushrooms in Ukraine. From a number of botanical and geographical regions (Crimean Steppe, Crimean Forest-Steppe, Mountain Crimea, Volyn Forest-Steppe, Levoberezh Polesie, West Polesie) there is only fragmentary information on random collections of various collectors.