According to current estimates, the family Rosaceae includes from 90 to 120 genera and 3000–3500 species, distributed mainly in temperate and subtropical regions of the earth; much less – in the tropics and desert regions. In Ukraine – 59 genera and over 280 species (along with subspecies), along with cultivated, which are often wild (in total in the culture and botanical gardens are grown about 360 species that do not go beyond cultivation). Compared with the previous edition of the checklist, there have been significant nomenclature changes in the genera Alchemilla, Crataegus, Potentilla, Rosa, Rubus, Sorbus and others. In particular, independent genera, isolated from the genus Potentilla s. l. are considered Argentina, Comarum, Dasiphora, Drymocallis, Sibbaldianthe. Some genera isolated from Sorbus s. l. are: Aria, Cormus, Hedlundia, Karpatiosorbus, Torminalis, which is confirmed by literature data based on studies of the nucleotide sequences of nuclear and ribosomal DNA. Microcerasus, Padellus, isolated from Cerasus s. str. (Prunus s. l.). At the same time, the genera Aphanes, Duchesnea are included in the genus Potentilla; Mespilus – in the genus Crataegus; Poterium – in the genus Sanguisorba. Many new species (as well as those translated into synonyms) appeared in the genera Alchemilla, Crataegus, Potentilla, Rosa, Rubus. The annotated list also includes cultivated species, including those that do not escape beyond culture. The genera Alchemilla (64 species), Rubus (63), Crataegus (37), Potentilla (37), Rosa (53), are the most numerous in the flora of Ukraine (together with the most widely cultivated species that often go wild). At the same time, many genera are represented by one or two species (Aremonia, Aruncus, Comarum, Cormus, Dryas, Drymocallis, Hedlundia, Karpatiosorbus, Sibbaldianthe, Torminalis, Waldsteinia, etc.).

A new locality of the rare endemic species Iris pineticola (Iridaceae) is described in the Left Bank Forest Steppe of Ukraine, in the Sula River basin near the border of the Lower Sula National Nature Park. Iris pineticola grows on an old clearing in the middle of an old floodplain forest on turfed alluvial light sandy soils in an ecotonic character grass community with diagnostic species of Molinio-Arrhenatheretea and Trifolio-Geranietea sanguinei classes, which is atypical. The location are given in the pine forests, artificial pine plantations on sandy river terraces in community of Pulsatillo-Pinetea classes, or on open sands in community of Festucetea vaginatae classes for the other known populations. Six-year monitoring has demonstrated the negative dynamics of the I. rineticola cenopulation: a decrease in numbers by 90%, the number of curtains (clones) by 60%, and the area by more than 80%. The cenopopulation consists only from 22 specimens, located by two curtains, 1 m² total area for today. The age spectra analysis showed a predominance of immatures and virgins, which indicates a decrease in vegetative reproduction rates and the loss of self-support, fast degradation and probable disappearance in this locality in a short term. Degeneration of the population has obviously occurred as a result of an increase in soil coverage, due to the growth of projective coverage gramineas, and also partly due to plant damage facultative phytopathogenic fungi, causing alternariosis of pregenerative and generative specimens leaves. The ascomycete from Alternaria alternata complex, ribotype of which is common in Southeast, South and Asia Minor, the northern line of which runs along the 50 parallel of Europe is the causative agent of I. pineticola alternariosis. The locality we identified is the northernmost known point of the Alternaria alternata complex area, where the carrier of this ribotype was found on I. pineticola, where the defeat of I. pineticola by Alternaria alternata complex fungi and alternariosis Iridaceae was registered for the first time. Therefore, the I. pineticola local population needs conservation and inclusion of the territory with the identified location to the Nature Reserve Fund of Ukraine, in particular, Lower Sula National Nature Park, which will cause the implementation of organizational, legal, economic, scientific and other measures aimed at ensuring its protection and reproduction.

The list of vascular plant species of the ecological settlement «Raduha» is given in the article. In 2020–2021, we conducted a comprehensive study of the flora of the settlement, supported by its founder Oleksii Ursulenko. The ecological settlement is administratively located within the Oleshky Territorial Community of the Kherson district of the Kherson region, in the western outskirts of the village of Sahy. The eco-settlement has an area of 30 hectares on the Oleshky sand arena. Wavy sands cover the territory with a slight natural elevation difference. The height of the dunes and the depth of the blowing pits do not exceed 1 m. The dominant types of natural vegetation within the area are psammophyte steppes, meadows and forest groves in the depressions. The main focus of the settlement is to spread the philosophy of good nutrition and healthy living, as well as to conduct educational seminars and health practices. The territory is slightly influenced by anthropogenic impact and differs by the high level of preservation of natural ecosystems. The studied flora of the ecological settlement "Raduga" includes 259 species of vascular plants from 170 genera, 52 families, three classes, and two divisions. Most species are herbaceous plants, while 20 species represent woody plants. Most woody plants are cultivated introduced species, which easily spread spontaneously in the region, in particular: ‘Armeniaca vulgaris, different varieties of Malus domestica, Prunus cerasifera, P. domestica, etc. Among them, there are one liana species and five species of shrubs. On the territory of the eco-settlement "Raduha", 46 species are melliferous plants, and 63 species are medicinal plants. In the list, there are also protected species: five species listed in the Red Data Book of Ukraine – Alyssum savranicum, Anacamptis palustris, Betula borysthenica, Centaurea breviceps, Stipa borysthenica, one endangered species of the CITES – again Anacamptis palustris, and one endangered species on both of the European Red List and IUCN Red List – Agropyron dasyanthum. The plant communities with a dominance of Stipa borysthenica and Betula borysthenica are protected by the Green Book of Ukraine. Pontic sandy steppes are listed in Resolution 4 of the Bern Convention (as habitat E1.12) and in the European Red List of Habitats (habitat E1.1a).

New records of the alien species Euphorbia davidii Subils in Odessa are reported. In August-September 2022, three new localities of the species were discovered: at the Odesa-Sortuvalna railway station, on the railway bridge and along the tram tracks near the Odesa-Mala railway station. Plants of E. davidii in these localities were well developed, with formed fruits. The largest locality with an area of 400 m² and with 126 plants was recorded at the Odesa-Sortuvalna railway station. The closest E. davidii sites to the identified localities are in the Odessa region at a distance of 60 km between the railway stations Karolino-Buhaz and Sonyachna. It is expected that further spread of E. davidii will occur both within and outside Odesa along the railroad tracks. Considering that E. davidii is a quarantine object with a high dispersal capacity, its further spread in Ukraine should be monitored.