The distribution of the rare high-altitude species, Gentiana acaulis L., listed in the Red Data Book of Ukraine, has been summarized based on the results of our field research, herbarium collections, data from the Global Biodiversity Information Facility, iNaturalist, UkrBIN, and various literature sources. Based on the data from this analysis, a general list of known locations and a map of the distribution of the studied species in Ukraine were compiled. According to the results of the analysis of the current distribution of G. acaulis in Ukraine, the species occurs in Svydovets, Chornohora, Marmarosh, Gorgany Mountains ranges, and is also known in the Eastern Beskydy and Low Polonyny, Pokutsko-Bukovynsky Mountains ranges, and the ChyvchinoHrynyavski Mountain range. Currently, 83 locations of G. acaulis have been registered in the studied region. The largest number of locations (29 geographic sites) is in Svydovets. Slightly fewer locations are concentrated in the Chornohora Mountain range (27 geographic sites) and in the Gorgany (14 geographic sites). There are five locations in the Eastern Beskydy and Low Polonyny, four locations in the Marmarosh, three in the Pokutsko-Bukovynsky Mountain range, and one location each in the Chyvchino-Hrynyavski Mountain range. The data obtained significantly support the existing information on the general range and distribution of G. acaulis in Ukraine. They can be used to organize the monitoring of known G. acaulis locations, study the state of its populations, and develop recommendations for its conservation.
This article presents the hitherto known records of Ornithopus perpusillus in Hungary. The species was first found in central Hungary as early as 1952, but was identified as O. sativus. It was (re-)discovered in southwestern Hungary in 2010 at several localities, in disturbed, open sandy grasslands, with co-occurrence of other Atlantic-Mediterranean species. O. perpusillus was likely introduced in Hungary at the beginning of 2000s, and now it is considered to be naturalized here.
The Biloozerskyi National Nature Park is a significant protected area in the Left-Bank Forest-Steppe of Ukraine and includes forest, wetland, and aquatic ecosystems. The flora of this park was shaped by the combined influence of natural components of the northern mixed (oak-pine) forest and forest-steppe zones, which makes it unique compared to other nature protected areas in the region. The study revealed the presence of 851 species and subspecies of vascular plants on this territory, of which 684 are native and 167 are alien. For the first time, alien plant species Rubus balticus has been included in the list of the flora of Ukraine. The most representative families are Asteraceae, Poaceae, Cyperaceae, Rosaceae, Caryophyllaceae and Lamiaceae. The most species-rich genera are Carex, Veronica, Trifolium and Pilosella. Geographic analysis of the flora indicates the dominance of widespread species (48.6 %) among native plants, as well as European (17.8 %) and Euro-Mediterranean (13.4 %) zonal elements. In contrast, the alien fraction is mainly represented by species of Mediterranean (46.7 %) and American (23.4 %) origin. The biomorphological structure of the native flora is characterized by a predominance of perennials (65.2 %), whereas the alien fraction includes a larger proportion of annuals, biennials and short-lived (60.5 %). Meadow-steppe, forest, and wetland plant communities play a crucial role in shaping the floristic composition of the park. The highest species richness is observed in pine forests, meadow steppes, and in riparian ecosystems. The flora of the park has significant conservation value, as 107 rare and endangered species have been identified, 25 of which are listed in the Red Data Book of Ukraine. At the same time, 35 invasive species have been recorded, such as Acer negundo, Asclepias syriaca, Solidago canadensis and Robinia pseudoacacia, which pose a threat to natural plant communities.
Two aquatic bryophytes of Northern character, Fissidens fontanus and Leptodictyum riparium, are reported for the first time from the Arabian Peninsula. A synthesis based on new field observations and a review of the literature provides an overview of the aquatic bryoflora of the Peninsula. The five species forming this exceptional assemblage in Arabia are mapped. They are restricted to wadis (dry riverbed that flows only after rain) carved into granite bedrock that efficiently channel and concentrate rainfall runoff – particularly under the influence of the monsoon – into localized zones of persistent moisture. The conservation status of these species is briefly discussed.
The presented 16th part of the series includes twenty new records of vascular plants from the territory of Central Europe. New record of Baptisia australis in Austria and Mahonia bealei, Ruscus hypoglossum and Amaranthus emarginatus subsp. emarginatus in Hungary. In Slovakia new localities of autochthonous species Aegilops cylindrica, Aira elegans, Pholiurus pannonicus, Orchis palustris and Tribulus terrestris were found as well as alien Dysphania botrys, Euphorbia marginata, Ficus carica, Hylotelephium ×mottramianum, Panicum capillare subsp. barbipulvinatum, Puschkinia scilloides and Salvia sclarea. Adventive species Heuchera sanguinea is recorded for the first time in the flora of Slovakia. Crocosmia ×crocosmiiflora and Eleusine indica are mentioned from Poland.
