The history of origin and Progression of Caryophyllaceae is connected with xerophytization of the Turgai flora, which was partly caused by the Oligocene and Miocene regressions of the Tethys, processes of orogenesis, and the Pleistocene glaciations. The Middle Asian and Mediterranean centers, which were connected to the Asia Minor and Balkan centers of diversity, played the main role in diversification of the family. Climatic and edaphic changes during the recent geological period (since the second part of the Holocene) promoted the formation of the new centers of diversity in the East European province, including the steppe zones of Ukraine (Black Sea coast area), in particular, the Pontic center. In these evolutionarily young centers, often weakly differentiated, morphologically endemic species were formed. The anthropogenic factors also played some role in further dispersal of some species of Caryophyllaceae of the Ukrainian flora, especially those originally confined to the Mediterranean region.

The list of the vascularplantsof the projected landscape reserve «Lesovyy Canyon» includes 222 species of 155 genera, 52 families, 3 classis, 2 divisio. Among them 13 species included to the various Red Lists.

The paper elucidates results of bryoflora study in the nature reserve «Medobory». In general 132 species of 28 families and 71 genera are found. The list includes 4 species of liverworts and 128 species of mosses, information about species distribution, life forms and also taxonomic comments for selected species. Rare and interesting species in the Reserve are: Brachythecium reflexum, B. starkei, Cirriphyllum crassinervium, Ditrichum flexicaule, Fissidens exilis, F. pusillus, Funaria muehlenbergii, Plagiothecium latebricola, Platydictya confervoides, Rhodobryum ontariense, Tortula canescens.

The check-list of Shazkyy national natural park lakes diatoms is presented. It consists of 284 species (298 including infraspecific taxa), 29 of which is new for the territory of Ukraine and 219 for the Shazkyy national natural park lakes.

Pannus microcystiformis Hindák (Cyanophyceae, Merismopediaceae) is recorded for the first time for Ukraine. The new finding is described and illustrated.

Collemopsidium angermannicum (Degel.) A. Nordin (Xanthopyreniaceae, Dothideales) firstly reported for Ukraine from concrete channel building (Kakhovskiy district, Kherson Region). This lichen formed black zone above channel water level.