On the basis of long-term researches, the modern state of flora of the lower reaches of Dniester–Tiligul. The 862 species of higher vascular plants sprout here, with prevalation of  hemikryptophytes (51,6 %). Most species are the representatives of ruderal (24,0 %) and steppe (21,4 %) florocoenotyps. In the ecological relation kseromesophytes (34,7 %) and heliophytes (72,0 %) predominate. The synanthropic plants are 51,0 % of species. 93,1 % of invasion species of North Prychornomoria are represented on the territory. Habitation is marked by 66 rare species of plants.

It is set that local flora of valleys of estuaries is represented by a large systematic variety, than flora of valleys of small rivers. Participation of hemikryptophytes in most local floras is a little higher than in the explored flora. The grade of prevailing florocoenotypes, and also  ecological groups, for most local floras, is saved. It is exposed, that valleys of estuaries are less synantropizated, than flora of small rivers. Location of the most rare species are situated on territories of regional ecological network.

The pollen morphology of six Puccinellia species of the Ukrainian flora using light and scanning electron microscopy was studied. The detailed morphological characteristics are represented. The pollen grains of species P. brachylepis were studied for the first time. It was found that the size of pollen grains and anther length are vary and it probably depends on ecological factors, therefore these features can not be diagnostic for species. Study of pollen grains of P. distans from different habitat conditions have not allowed us to confirm existing data regarding anther form (Yu.M. Prokudin indicates that P. distans differs from all other species of anthers elliptic shape. In all studied species the anther form was linear).

The paper presents comparative analysis of floristic and coenotic descriptions of even-age (50 years old) plant communities with different specific compositions in Southern Kryvyi Rih area. We carried out their taxonomical and biomorphological descriptions; regularities of quantitative distribution of species according to their phytocoenotical activitity and occurence are ascertained. We ascertained that vegetation of these artificial plantings is characterized by low specific richness: 38–40 species, but species quantity of pine forests on sands consists 90 species. We ascertained that correlation of species according their occurence and phytocoenotical activity depends on kind composition of plantings determining their light structure type.

The new alliance Endocarpo-Xanthocarpiontominii all. nov. and association Caloplacetumalbolutescentis ass. nov. (class Psoretea decipientis Mattik). in loess outcrops of southern Ukraine are described as new for science. The ecological peculiarities of the new lichen association are showed. The syntaxonomic table is given in this paper. The list of the lichens and lichenicolous fungi (42 species) of loess outcrops is provided.

An information about Codonmyces lecanorae Calat. & Etayo – new species of lichenicolous fungi from Ukraine is given. The species grows on thallus and apothecia of Protoparmeliopsis muralis (Schreb.) M. Choisy and is characterized by conidiogenous cells which have 1–4 conspicuous annellations and 1–septate conidia. The paper describes morphologic peculiarities, location, ecology and distribution of this species.

Study of obligate parasitic fungi in the territory Tuzlovski lymany National Nature Park (Odessa region, Ukraine) resulted in the detection of 40 species of the orders Albuginales (one species), Erysiphales (12), Peronosporales (6) and Pucciniales (21). 31 species are new for the territory of park. Rust fungus Uromyces aeluropodis-repentis is reported for the first time in the territory of Right Bank Steppe of Ukraine, species Erysiphe buhrii, Peronospora holostei, Puccinialiliacearum, Uromyces giganteus та U. polycnemi are rare for the Right Bank of Steppe zone and Ukraine. Identified fungi parasitized 51 species of host plants belonging to 44 genera and 26 families. Among plants Thlaspi perfoliatum is new for Ukraine host of Albugo candida and two species – Ornithogalum boucheanum and Trachomitum sarmatiense listed in the Red Book of Ukraine (2009).

The paper deals with the parametres of geographic analysis of the types of pathogenic microorganisms developing on flowers and ornamental plants. The species composition of Alternaria genus pathogens on annual and flowering ornamental plants has been found out for the first time and their complete geographical analysis is presented. Mycobiota of genus Alternaria species is represented with wide-scale areal species: A. alendulae, A. brassicae, A. alternata, A. zinniae, A. penicillata well as with the narrow areal ones: A. solani, A. japonica, A. florigena, A. petalicolor, A. celosiae. Species of the genus Alternaria are represented in all natural areas of the world, with the prevalence in palearctic zone. Alternaria, which are parasitic on annual ornamental flowers do not show a clear dependence of the area, though they tend to spread significantly in the regions with subarctic, continental, moderate and subtropical climates.

The results of studies of agricultural landscapes Kherson region – namely provided discovered territories valuable in relation sozological that are steppe enclaves of anthropogenically disturbed areas. Description of designed objects made for the guidelines to the study of protected areas. A conservation to three botanical reserves of local significance, within which represented the remnants of typical fescue-grass steppe. Overall, in three projected objects found 176 species of vascular plants of representatives of 133 families 40 families 3 classes 2 sections. Sozological value are 11 species listed in the list of security at various levels.

There was made the systematic analysis of the flora of the regional landscape park «Gadyachsky». Its flora is represented by 923 species of vascular plants. There are 437 genera, 111 families and 5 departments. The high level of floristic richness of the park is determined  by multi-territory differentiation and ecotonic effect. There was given numeral characteristics of the specific composition of the main taxonomic items, principal proportions of the flora. (Liliopsida/Magnoliopsida; genera/species; families/ genera/ species), number of species of main families and genera spectra. In the stectrum of the principal families dominate Asteraceae (117 species; 12,6 %), Poaceae (63; 6.8), Brassicaceae (52; 5,6), Fabaceae (52; 5,6), Lamiaceae (47; 5,1), Caryophyllaceae (46; 5,0), Rosaceae (45; 4,8), Ranunculaceae (36; 3,9), Apiaceae (34; 3,7), Scrophulariaceae (26; 2,8). The most polymorphous genera are Carex (20 species; 2,2%), Chenopodium (14; 1,6), Veronica (13; 1,4), Ranunculus (13; 1,4), Galium (12; 1,3), Dianthus (10; 1,1), Salix (10; 1,1), Potentilla (10; 1,1), Vicia (10; 1,1), Trifolium (9; 1,0). The flora of the park has closely-related character between Mediterranean-Eurasian and Boreal floras.

The article analyzes the complex factors that affect the current state of shelterbelts in the Kherson region. In recent decades because of conflicts of interests of forestry and farmers forest belts don’t have clearly defined users. Because of this fundamental research of the current state and functional compliance of shelterbelts is not being performed now.
As a result of our research we have identified dependence of the quality of the current state of shelterbelts on their species composition, type of construction, the underlying surface and intensity of farming on nearby farmland. When laying sample plots it was covered all types of shelterbelts of the Kherson region, based on their species composition and the soil type.

Separately, our research has shown that the surface layers – herbaceous and moss-lichen – play a significant positive role in the "independent" existence of shelterbelts. It lies in the fact that the larger the area of projective cover and therefore powerful litter – the better  the moisture content of soil is. This, in turn, has its positive impact on moisture content of phanerophytes, and the possibility of a self-renovation by generative and vegetative means.

It was identified that the reduction of anthropogenic impact on the adjacent fields there is a tendency to almost complete replacement of grassy tiers and soil conditions of the forest belt ecosystem.

It was indicated that shelterbelts in the South of Ukraine plays a crucial role in the structure of ecological network of Ukraine, where they are the only environmental migration corridors and gene pool exchange of native plant and animal species on upland areas.

It was analyzed the phytodiversity of designed botanical reserve "Pylyptsevi lakes", which occupies part of the Lower Dnieper sands of Aleshkovsky arena (Tsyurupinsk district, Kherson region). The vegetation of the area is characterized by high cenotic and floristic diversity. Vegetation is represented by: psammophyte steppes (class FestuceteavaginataeSoo 1968 em Vicherek 1972and class Festuco-Brometea Br.-Bl. et R. Tx. in Br.-Bl. 1949); marsh vegetation (class Phragmito-Magnocaricetea Klika in Klika et Novak 1941); halophytic meadows (class Limonio meyeri-Artemisietea I. et V.Solomakha in V.Solomakha 2008 cl. nov.). There are a lot of sozophytes of different categories of protection in the studied plant communities. We made syntaksonomichal scheme plant of communities of the area.

Dendroflora of the Tuzlovskie limany coast includes 86 species from 56 genera, 32 families, 22 orders, 3 classis and 2 divisions. There are 46 trees (53,5 %), 23 shrubs (26,7 %), 17 undershrubs (19,8 %) and one small shrub (Ephedra distachya). There are 10 dendrosozophytes (8 from IUCN Red List and 3 from Odessa Region Red List), among them 3 native species (Ephedra distachya, Periploca graeca, Tamarix ramosissima), two are Odessa region aboriginal flora components (Amygdalus nana та Quercus robur), one – other regions of Ukraine (Pinus pallasiana) and 4 –exotic species (Armeniaca vulgaris, Juglans regia, Platycladus orientalis, Robinia pseudoacacia). There are 5 highly invasive species in the park, among them 2 species-transformers (Amorpha fruticosa and Elaeagnus angustufolia). Dendrodiversity of the NNP “Tuzlovskie limany” formed by artificial forest areas Lebedevka, Yellow Jar and Tuzly mainly. There are 73,3 % all species. Plantations formed by 63 forest species, 32 of them are native (50,8 %) and 28 adventive (44,4 %) for Odessa region. Four forest species have gone beyong the forest areas and are the part of the steppe and psammophytic communities (Ailanthus altissima, Amorpha fruticosa, Elaeagnus angustifolia, Morus alba.). Native dendroflora includes 20 species (23,3 %), among them bushy tree, 2 shrubs, small shrub, 2 undershrubs and 14 small undershrubs.

Spatial patterns of maize morphometrics traits interrelation variability with geographically weighted principal components analysis at large-scale level have been revealed. Spatial variability of covariation structures which describes interrelation between morphometrics indicators and density of standing of maize have been established. The global pattern of interrelation obtained by means of the classical principal component analysis have been shown as not to be identical to local covariation structures. Local covariation structures which found with geographically weighted principal components analysis within an optimum kernel bandwidth are characterised by much higher level of nonrandom variability which is described by first three principal components. The part of a dispersion which specifies in a coordination of morphological structures, is characterised by natural spatial trends of a variation. Local covariation structures form spatially natural patterns of the placing. Feature of these structures is quantitative redistribution of those values or other signs within the limits of enough invariant configurations. The continuity covariation structures in a qualitative sense at various scale levels (global and local) but with local quantitative specificity is shown. This specificity is shown in prevalence of this or that indicator as basic marker main components at local level. Revealing of spatial patterns covariation structures puts a problem of understanding of the nature of this spatial regularity.