The main purpose of research is the detection of Plantago lanceolata L. plants adaptive features, which allows accommodating themselves to the stressful environmental conditions. Plants from natural habitat, in man-disturbed ecotopes and transitional zone between natural and technogenic systems have been studied. Absolute and relative parameters of the plants morphological features were measured. Differences in plants habits from studied sites were identified. Plants from transition zone have the smallest leaves, spears and inflorescences as well as lowest total variability. According to the relative leaf indices reflecting total vitality of plant, Plantago lanceolata individuals from the transitional zone had the faster growth with the minimal costs on the leaf building.

The dynamics of vegetation water, the lower reaches river Sula was analyzed. Research territory for the administrative division of Ukraine belongs to the southwestern part of Poltava and northeastern regions of Cherkassy. It was established that for waters of the lower reaches of Sula river are characterized by autogenetic (syngenetic, endogenetic) and ekzoekogenetic (natural and anthropogenic) changes. The main directions and trends in vegetation were described. Generalized scheme of water vegetation changes depending on the type of bottom sediments, water column, and the flow velocity was given.

The article contains comprehensive analysis of the current state of biodiversity in urban flora of Primorsk. It has been shown that species composition of urban flora Primorsk (Zaporizhia region) has 556 species of 2 divisions, 61 families and 233 genera. We have analyzed the urban flora of Primorsk in systematic, biomorphological and ecological aspects. Adventive component was analyzed, the main trends of its further development were identified. We shown the main centers of entry alien invasive species of flora, ways and causes their proliferation. It was revealed that Primorsk is characterized by specific urban floras, which combine elements of the natural flora and typical urban components.

Grass and subshrub layer in forest ecosystems is an important structural and functional part. The study of populations of Calluna vulgaris (L.) Hull, as one of the most common species in forest phytocenosis of the National Nature Park "Desniansko-Starogutsky", has been conducted. It is a perennial evergreen subshrub, the populations of which often dominate or co-dominate in the lower layers of forest ecosystems. A scheme of the complete ontogeny periodization of C. vulgaris is suggested as a result of the research. Ontogenetic and vitality structure of populations is determined on the basis of the integrated monitoring. The population of heath in Betuleto-Pinetum callunoso-myrtillosum and Pinetum callunoso-hylocomiosum associations belongs to the category of depressive by vitality state. The population of C. vulgaris in the association of Querceto-Pinetum callunoso-hylocomiosum belonged to the category of prosperous with the highest quality index of 0,500. It can be considered that due to the general nature of forest phytocenosis of the region, heath will not become a dominant species in grass and subshrub layer, but its position is quite strong there.

This article is a continuation of the publication of the rare species of bryophytes in Ukraine. The characteristic of rare species of Bryophyta division (Sphagnopsida and Bryopsida class) is given. These species are included to The Red Data Book of European Bryophytes, The Annex of The Berne Convention, The Red Data Book of Ukraine, The Red List of Bryophytes of Ukraine and Checklist of European Bryophytes on the establishment of European Red List. 5 species are rare for Sphagnopsida class, 96 species – for class Bryopsid. The greatest number of rare species is presented in Pottiaceae family – 21, Amblystegiaceae – 7, Fissidentaceae, Funariaceae, Orthotrichaceae – 6 species; in genera Fissidens – 6, Sphagnum – 5, Tortula – 4 species. Described species need to be considered critically in order to define measures of their protection in Ukraine.

In the result of obligate parasitic fungi study in the territory of Nyzhniodnistrovskyi National Park (Odessa region, Ukraine) 57 species of the orders Albuginales (two species), Erysiphales (25), Peronosporales (3) and Pucciniales (27) were identified. 14 species are new for the territory of the Park. Rust fungus Puccinia arenariaeis reported for the first time in the territory of Right Bank Steppe of Ukraine; species Erysiphe friesii, Golovinomyces macrocarpus,Phragmidium tuberculatum, Pseudoperonospora cubensis, Puccinia convolvuliandP. scirpi are rare for this region. Identified fungi parasitized on 61 species of host plants belonging to 53 genera and 26 families. Among these plants Myosoton aquaticum (Caryophyllaceae) is new for Ukraine host species of the rust fungus Puccinia arenariae.

The data for lichenicolous fungi of the valley of Ingulets river are given. The list of lichenicolous fungi includes 22 species. Among them, Stigmidium xanthoparmeliarum Hafellner is new for Ukraine. This species forms a gray necrotic spots in thallus and characterized by 4-spore asci and colorless 1-septate spores. Seven species are new to the Dnipropetrovsk region, 2 species are new for Kirovograd region and one species is new to the Mykolayiv region.

The results of lichen indication research of surface layers quality of Kherson air are given in the article. 44 species of epiphytic lichens have been found, including 17 taxa identified as new to the studied area, and 11 species appeared in the last two decades. According to clean air calculation Index a spatial distribution model of izotoxic lichen indication zones of the city was built, the possible causes and patterns of their distribution in a given location were analyzed. A comparative analysis of distribution zones with different air quality for the period of 1995–2015 was conducted. Relative decrease in the dynamics and reduction of unpolluted and lightly polluted area of lichen indication izotoxic zones was observed; it is associated with changes in the intensity and sources of anthropogenic influence for the last two decades. Seven types of urban landscapes were identified and for each of them relative air quality by lichen indication detectors was set. The poorest air quality was found within vehicles landscapes that consist of 2/3 highly and moderately polluted lichen indication izotoxic zones and the highest quality – within the garden and park landscapes, where 3/4 of the territory is located on unpolluted and moderately polluted areas.

The paper provides information on the whereabouts of four species of orchids (Epipactis helleborine, E. palustris, Listera ovata, Anacamptis palustris) in the basin of the lower Sula on the results of original research. It is characterized by ecological-coenotic features of the new locations of these species on the basis of the geobotanical descriptions of the communities. Epipactis helleborine was found in the array of mountainous deciduous forests, and Listera ovata in the floodplain forest on the bank of the river Rotten Orzhytsa (Grebenkovsky district, Poltava region) and eutrophic swamp in the outskirts of the village of Belousovk (Drabiv district, Cherkasy region). Meadow-wetland species – Anacamptis palustris and Epipactis palustris – form populations on the flood meadows in the vicinity of the village Mykhailivka of Cherkasy region, and the last type numerically found in specific habitats – willow-poplar neighborhoods of Sula. Mentioned localities of the species are represented by resocialise populations, mainly on right-bank of the river, which are confined to relevant ecological and nanotechnic conditions. Such spices as Epipactіs palustris and Anacamptis palustris are protected in the tract «Birch» on the territory of National natural Park. Such spices as Epipactіs helleborine and Listera ovata are advisable to protect, consequently creating a Botanical Reserve and a Conservation Tract «Belousov».