This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: mycorrhizal fungus Russula sapinea, parasitic fungus Podosphaera polemonii, saprotrophic fungi Ophiognomonia melanostyla and Plagiostoma apiculatum, diatom alga Nitzschia reskoi, stonewort Nitellopsis obtusa, liverwort Mannia triandra, mosses Buxbaumia viridis and Leptodon smithii, monocots Epipactis purpurata and Orchis ? beyrichii and dicots Euphorbia orjeni, Fallopia ? bohemica, Nuphar lutea and Saxifraga pedemontana subsp. cymosa.

This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: red algae Lemanea fucina and Paralemanea annulata, parasitic fungus Anthracoidea pratensis, saprotrophic fungi Cyathus olla, Massaria campestris, and Xylaria sicula, stonewort Chara canescens, liverworts Gymnomitrion commutatum and Porella baueri, moss Acaulon triquetrum, monocots Anacamptis laxiflora, Cephalanthera damasonium, and Himantoglossum robertianum and dicot Jacobaea othonnae are given within SE Europe and adjacent regions.

This is the first review of the studies of medicinal plants found in the region of North Black Sea Coast. It shows the significant diversity of the medicinal plants in the northern part of Black Sea Coast floristic region: 593 species of vascular plants from 357 genera and 96 families. The majority of the families and genera are represented by a small number of species, which ranges from 1 to 4. The analysis of life forms indicates that the hemicryptophytes dominante (43.17%). The biological types are represented mainly by perennial herbaceous plants (54.81%). The highest percentage of species belongs to the European type (55.48%), followed by species of the Mediterranean type (17.54%). Among the medicinal plants one Balkan endemic, one Bulgarian endemic and 32 relicts are found. The number of species with conservation status is 55 (9.27%). 18 species are protected by a law prohibiting the herb colection within their natural habitats and collecting of 9 species is restricted by the law regulating the collection of herbs from their natural habitats. The number of antropophytes is relatively high 374 (63.07%).

This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: red algae Lemanea rigida and Paralemanea torulosa, mycorrhizal fungi Amanita simulans and Terfezia pseudoleptoderma, parasitic fungus Microbotryum vinosum, saprotrophic fungus Sarcoscypha jurana, stonewort Chara tenuispina, mosses Brachytheciastrum collinum and Meesia longiseta, monocots Dactylorhiza romana and Neotinea maculata and dicots Adenophora liliifolia, Ambrosia artemisiifolia and Tanacetum corymbosum subsp. cinereum are given within SE Europe and adjacent regions.

The present study investigated the chemical composition of the main components of five commonly occurring Thymus species in Bulgaria: T. sibthorpii Benth., T. pulegioides L., T. glabrescens Willd. (syn. T. odoratissimus Mill.), T. callieri Borbas ex Velen. (syn. T. roegneri K. Koch), and T. zygioides Griseb. The phytochemical profiling of the Thymus species was performed using GC-MS for the analysis of essential oils and HPLC for the identification and quantification of phenolic compounds in the ethanolic extracts. Linalool was the dominant essential oil constituent in T. sibthorpii (48.17%), T. pulegioides (50.96%), and T. callieri (38.08%) while thymol prevailed in T. glabrescens (35.35%). A novel chemotype was observed in T. zygioides. The HPLC analysis confirmed rosmarinic acid as the major phenolic acid across all species. Rutin was the predominant flavonoid in four species whereas T. sibthorpii exhibited a remarkably high concentration of (+)-catechin. Overall, the high chemical diversity within the Thymus genus was confirmed. Due to the variability of compounds among plant species, the findings of the present study suggest that, along with essential oils, phenolic components may also contribute to the chemotaxonomic classification of the Thymus genus and influence the pharmacological activity of the species, which requires further study.

This paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: cyanobacteria Pseudanabaena thermalis, lichenised fungi Acrocordia gemmata, parasitic fungi Peniophora tamaricicola, saprotrophic fungi Hyphonectria buxi, diatom alga Diatoma elongata, mosses Sphagnum medium, Rhizomnium magnifolium, and Weissia squarrosa, monocots Gymnadenia frivaldii, Hemerocallis lilioasphodelus, Orchis ? angusticruris and Pistia stratiotes, and dicots Astragalus angustifolius subsp. balcanicus, Broussonetia papyrifera, Datura innoxia and Montia arvensis.