At the results of investigation of micromorphology features of seed surface of the Portulaca oleracea aggr. (Portulacaceae Juss.) from Chernivtsi Region (Ukraine) six morphotypes of this taxa were recorded. Some peculiarities of the seed morphology of Portulaca L., and features of the ultrastructure of seed surface of the P. oleracea aggr. morphotypes, based on the results of micromorphological studies with using electronic scanning microscope was described. The general for the representative of the genus (e.g. globous, ovate or almost reniform shaped of seeds; black or dark brown color) and specify for the morphological types (star-shaped, isodiametric or elongate cells of seed surface with central part and long or short rays; smooth surface of seed or with knobs (from 0,03 mm in diameter) or papillae (0,01–0,02 mm), etc.) peculiarities are determined. The original scanning electron microscopy (SEM) photographs of seed surface ultrastructure of the studied morphological types and key fragment for its determination are suggested. According to our investigation six morphotypes of Portulaca oleracea aggr. are presented in Chernivtsi Region. Some of them are new for studied territory (P. granulatostellulata (Poelln.) Ricceri & Arrigoni, P. papillatostellulata (Danin & H.G. Baker) Danin), and other (Portulaca nitida (Danin & H.G. Baker) Ricceri & Arrigoni, P. trituberculata Danin, Domina & Raimondo, P. tuberculata (Danin & H.G. Baker) Danin) – new floristic records for Ukraine, and one of them (P. oleracea) – was known before also. The maps of distribution of this morphotypes in the region are presented. At the results of morphotypes distribution the most common is P. granulatostellulata and P. oleracea – rare in studied region like as in Europe also.

Systematic and phylogenetic status of Muscari – valuable ornamental and melliferous genus of flowering plants, still unclear despite numerous explorations. Therefore, the aim of the work was to carry out a critical analysis of publications devoted to phylogeny and taxonomy of the genus Muscari and to clarify its taxonomic position. The article provides a brief overview of the main publications dedicate to phylogeny and taxonomy of the genus. The systematic position of the genus Muscari in the early phylogenetic systems, taxonomic systems of the XX century and modern molecular phylogenetic systems is observed. Modern phylogenetic systems developed by Angiosperm Phylogeny Group (APG III, APG IV) and based on DNA sequence analysis. They show that Muscari belongs to the subfamily Scilloideae, family Asparagaceae s.l., order Asparagales, clusters Monocots. Phylogenetic relationships within the genus Muscari is difficult and controversial. In general, there are two main concepts of the genus Muscari division into subgenus. The first was developed by F. Speta in 1999 and is based on molecular data. In it, the genus is considered in a broad sense (s.l.), and divided into 4 subgenera: Muscari, Leopoldia, Muscarimia and Pseudomuscari. The second, more modern concept was developed by R. Govaerts and presented in the «World Checklist of selected plant families». According R. Govaerts, Muscari is divided into 3 separate genera: Muscari s.str. (=Muscarimia, Botryanthus), Leopoldia and Pseudomuscari. Paleobotanical data analysis established that the ancestral forms of modern Muscari originated approximately 3,29 million BC in the Mediterranean and spread to other regions of the world. The closest phylogenetic relatives of Muscari are the genera Scilla and Bellevalia. Chouardia and Nectaroscilla are also highly related. Comprehensive studies of morphological, biogeographical, molecular and other peculiarities of critical taxa are needed to clarification of the systematic position and phylogenetic relationships within the genus Muscari.

Modern approaches to the use of grid mapping in studies of biodiversity at the level of distinct countries and local territories are described. Information on the territory of Seymskiy Regional Landscape Park as a significant element of the National Ecological Network, the Emerald Network in Ukraine and the regional ecological network, and on its functional zoning is given. The cartographic basis of the territory of Seymskiy Regional Landscape Park is created via MapInfo program. When designing the grid map of the park, the experience of developing grid maps for Cheremosh National Nature Park, Vyzhnytsky National Nature Park, Hutsulshchyna National Nature Park, Khotynsky National Natural Park was used. It is based on application of a grid of 1×1-km squares, which is consistent with the accepted in Atlas Florae Europaeae grid, following the UTM coordinate system. Operational layer of the generated map comprises 1193 squares, fully (876) or partially (317) covering the study area. Each square is assigned an individual number (ID), consisting of alphanumeric notation that allows to easily find information and operate it. For each of the plant species, there is created a separate layer, stored in an electronic database and containing information about the location of the species in a certain square. Synthesis of information using the algorithm of creating thematic maps will help to identify the locations of concentration of floristic diversity in the study area, and its combination with zoning maps will provide an opportunity to correct functional zoning of Seymskiy Regional Landscape Park. The information collected and organized in this way will clearly display the dynamics of the number of individual species, which is especially relevant for rare species and alien flora fraction of the park. Cartographic material will be the basis for further monitoring studies within the territory of Seymskiy Regional Landscape Park.

Наведено нові відомості про поширення у Чивчино-Гринявських горах (Україн-ські Карпати) одного з найрідкісніших видів флори України -Pedicularis exaltata Besser, підтверджено тенденцію скорочення кількості місцезнаходжень, відзначе-но необхідність застосування активних методів охорони.Ключові слова: Pedicularis exaltata, поширення, Чивчино-Гринявські гори. ВСТУПPedicularis exaltata Besser -середньоєвропейський реліктовий вид, розповсю-джений у Чехії, Польщі, Білорусі, Румунії та Україні [7,8]. Від близького P. hacquetii Graf відрізняється голими неопушеними чашечкою, трубкою віночка та приквітка-ми [8]. У Білорусі та Польщі вважається зниклим [10,11 ], а в Чехії є одним із най-рідкісніших видів і охороняється зі статусом "критично загрожений вид" [5].В огляді щодо поширення видів роду Pedicularis в Україні [9] зазначається, що P. exaltata у нашій країні відомий із чотирьох ізольованих місцезнаходжень, які фор-мують північно-східну межу його ареалу. Причому два з них (у Чернігівській і Терно-пільській областях) є втраченими, а одне (на г. Гнєтєса) потребує підтвердження. Достовірно відома популяція з околиць с. Спаська Сторожинецького р-ну Черні-вецької обл. У зв'язку з цим P. exaltata зі статусом "зникаючий" включено до Черво-ної книги України [12].Популяція в околицях с. Спаська досить добре вивчена -досліджено чисель-ність, щільність популяції, проаналізовано морфометричні особливості, насіннєву продуктивність, встановлено віталітетну й онтогенетичну структуру, охарактеризо-вано еколого-ценотичні особливості, визначено загрози для популяції [3,4]. Відо-мості про фітоценотичну приуроченість популяцій виду наведено у статтях А.І. То-карюк зі співавторами [14] та Я. Ролечека зі співавторами [13].Проте, як виявилось, інформація про поширення P. exaltata на території Укра-їни далеко не повна. У цьому повідомленні узагальнено виявлені нами нові дані щодо розповсюдження цього виду в Чивчино-Гринявських горах -одному з фло-ристичних районів Українських Карпат [6].

The article reports about chorology, phytocenotic, biotopical features of 24 orchid species (Orchidaceae Juss.) on the territory of Chernivtsi. The history of studying orchids in the city is described. The authors give the cadastre of locations of orchids based on studies of material at the herbariums (CHER, KW, LE, LW, МНА), literary sources and own collecting expeditions. There found 24 species of orchids in Chernivtsi. 6 of them (Anacamptis coriophora (L.) R.M. Bateman, Pridgeon et M.W. Chase s.l., A. palustris (Jacq.) R.M. Bateman, Pridgeon et M.W. Chase, Corallorhiza trífida Châtel., Dactylorhiza cordigera (Fries) Soó, Orchis purpurea Huds. та О. signifera Vest.) are not been confirmed by modern collecting expeditions, 3 of them (Anacamptis palustris, Orchis purpurea, О. signifera) were listed from herbarium and literary sources of the second half of ХІХ century. At the moment these species and their habitats are suspected to have been lost due to urban transformation. 17 species (70,8%) of orchids have been found in 1-5 habitats, and 7 species (29,2%) – in 6-20 habitats. Orchids are the part of 4 alliance 4 orders and 2 classes of natural vegetation Carpino-Fagetea sylvaticae Jakucs ex Passarge 1968 and Molinio-Arrhenatheretea Tx. 1937 and 5 types of habitats (4 of them are natural and 1 – synanthropic) on the territory of Chernivtsi. Natural plant communities with orchids belong to 4 habitats from Annex I of the Council Directive – 9130, 9170, 6510, 6440 and 4 biotopes listed in Resolution №4 of the Bern Convention – G1.6, G1.A1, E2.2, Е3.4. Remnants of natural forest biotopes having orchids were survived by the designation of landscape sanctuary – «Tsetsino» (430 ha) the object of national significance and «Haryachyy Urban» (108 ha) the object of regional significance. There are 11 and 2 species of orchids on the territory of «Tsetsinо» and «Haryachyy Urban» respectively. Cultivated coenosis of the biggest Park Architecture Monument of regional significance «Zhovtnevyy» (63,5 ha) have 3 speсies of orchids. 4 species are not protected. These results are important for follow-up monitoring measures on rare species of plants in Chernivtsi.