The information on rare mosses of flat zones and mountain landscapes of Ukraine is provided. Two groups of rare mosses were recognized: 1 – “officially rare”; 2 – “regionally rare”. 123 species are included in the first group; they are rare in the whole territory of Ukraine and are mentioned in the official documents to the national nature conservation; they are often red-listed in European and world level. 298 species are included into the second group; they are officialy protected, but they are rare in one or more natural regions of Ukraine; while in others they are usual or sporadically spread species. 113 species (37 species are officially rare and 76 regionally rare) are recognized for the mixed-deciduous zone. 100 species (40 and respectively 60) are in the nemoral zone. 96 species (21 and respectively 75) are in the forest-steppe zone. In the Steppe zone (with Flat Crimea), 112 species (17 and respectively 95) are recognized. 119 rare species (23 and 99) are in the Crimean mountain region. The greatest number of rare species is recorded from the Carpathians: 137 species (58 and respectively 79).

The development of the terms “synusia” and “bryocommunity”  is explained. Bryophyte cover in the Ukrainian forest-steppe zone is characterized by its components and classified into the units: bryo-aggregations, bryo-coenoses, bryo-synusiae.

On the basis of modern sozological concepts the creation principles of ecological network in a Steppe zone of Ukraine and criteria of selection of its structural elements have been developed. The regional plan of the Steppe zone’s ecological network which includes 3 key territories of international, 24 –  of national, 38 –  of regional level and also 4 ecocorridors of international, 4  of national and 21 – of  regional level have been developed and characterized.

Using method of synphytoindication, the values of certain climate and soil ecological factors of plant communities, located in the area of former shooting-range of the Azov sea coast, were calculated. The results of ordination analysis indicate that the majority of ecotopic characteristics of the studied area have intermediate position between diverse grass, fescue and feather grass steppes and fescue and feather grass steppes. However, it must be noted that the object system of Nature reserve fund of Ukraine, located in the steppe zone, is incomplete. That is why giving the protected status to the researched area will promote the development of Pryazov’ya ecological network.

Early ontomorphogenetic specialization of Gymnospermium оdessanum (DC.) Takch. as ephemeroid geophyte has been recorded. Its extrapolation on the phylogenetic level as a ascertaining of the relative evolutional statics of the species was proposed.

Phenology has been studied in 20 species of shrubby species of Rosaceae in Livoberezhne Polissia. The main phenological phases are prolonged with higher effective temperature; the data on particular phases are shown. Investigated plants have highly adaptive abilities and may be recommended for wide use in Northern Ukraine.

The composition of essential oils from Monarda fistulosa has been studied in healthy plants and in plants affected by the fungal pathogen, Golovinomyces biocellatus (Erysiphales). 35 terpene combinations have been identified. The contents of carvacroland thymol in healthy plants are 45% and 2% respectively. In plants damaged by Golovinomyces biocellatus, the content of carvacrol decreases to 4% and quantity of thymol increases up to 62%.

Allelopathic influence of three ground-covering plant species (cultivated grasses) has been tested on a culture of apple-trees and their allelopathic influence has been confirmed. Recommendations for decorative plant compositions around apple-trees are provided.

Our new record to Ukraine of a rare lichen Athelium imperceptum (syn. Thelocarpon imperceptum) is discussed. We provide data on ecology of the species and its European distribution and we have also made up modern diagnoses of both, the genus Athelium andthe species A. imperceptum. The recovered genus Athelium is distinguished from Thelocarpon by the absence of pulvinic acid derivates forming a superficial yellow pruina on perithecia; its perithecia rather resemble those of Thelopsis rubella. Thelocarpon magnussonii is also devoid of yellow pruina (probably a secondary lost) but it differs from A. imperceptum by its well-developed thalline exciple.

Analysis of  life forms is done for the lichen-forming fungi in the Yelanetsko-Ingulskiy region. We recognize 19 growth forms of lichen thalli here.

49 species of lichens and 3 species of lichenicolous fungi from 30 genera, 15 families and 5 orders are recorded in man-made forests of “Altagir” (46 species) and “Staroberdyansky” (37 species) in Melitopolskiy district (Zaporiz’ka oblast). 38 species are newly recorded for the Zaporiz’ka oblast.