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Tétel Szabadon hozzáférhető A fenyőfagyöngy (Viscum album subsp. austriacum) elterjedése és gyakorisági viszonyai Magyarországon(2025-09-24) Schmidt, Dávid; Jandrasits, László; Korda, MártonBased on the data collected between 2015 and 2023, we present a detailed account of the occurrences and current distribution of Viscum album subsp. austriacum in Hungary. We present its frequency and abundance, and also examine the factors influencing its distribution and prevalence. The taxon is generally widespread in the western half of Western Transdanubia, where it is a characteristic (and partially native) element of the mixed pine forests of the Vendvidék, Felső-Őrség, Kőszeg Hills, and the Pinka Plain. Its occurrence has been confirmed in almost all (older) Scots pine and black pine stands of the Sopron Hills, where it has become a mass pest in several locations. Based on our studies, the current distribution of the taxon in Southwestern Transdanubia follows the border of the native distribution of Scots pine, but in the Kemeneshát and the Sopron–Vas Plain, the regional boundary extends 10–25 km beyond it. The frequency of pine mistletoe within the subcompartments was highest in mixed coniferous stands. We also recorded a mass infection that played a significant role in the degradation of the stands. The notable increase in the number of occurrences can be explained by the significant under-mapping of the taxon to date, as well as its documented spread throughout Europe. It is also assumed to be linked to the increasingly unfavorable health status of coniferous forests in Hungary. This process may be facilitated by the fact that the resistance of Scots pine forests in both hilly and lowland regions has significantly declined due to the increasing length and frequency of drought periods. Compared to previous years, forest stands in weakened condition are more susceptible to infections by pathogenic organisms, such as mistletoe.Tétel Szabadon hozzáférhető Adatok a Pannon Ökorégió őshonos növényfajainak ismeretéhez I. (1–5)(2024-12-19) Molnár V., Attila; Bak, Henrietta; Bodics, Dániel; Bordé, Sándor; Chabrecsek, Terezia; Fekete, Réka; Gilicze, Bálint; Gyurisán, Dániel; Hunyadi, Tünde; Jordán, Sándor; Kelecsényi, Péter; Kis, Szabolcs; Kiss, Gábor; Koloszár, András; Lovas-Kiss, Ádám; Löki, Viktor; Mäh, Zoltán; Mészáros, András; Simon, Pál; Süveges, Kristóf; Szabó, Gyula; Vikár, József; Vizler, Csaba; Jakab, Gusztáv; Takács, AttilaThis is the first part of a series presenting previously unpublished data of importance for the knowledge of native vascular plants in the Pannonian Region. This paper deals with the families Lycopodiaceae, Brassicaceae, Crassulaceae, Rosaceae and Orchidaceae. We document the occurrence of Lycopodiella inundata from a ski slope on the outskirts of Nagyhuta (Northern-Hungary) as a new species in Hungarian flora. New occurrence data are reported for the roadside spreading Sedum caespitosum and Thlaspi alliaceum . We report on the specimens of Spiraea crenata found in the interior of settlements (gardens, cemeteries) between 2019 and 2024. New occurrences of several orchid species rare in Hungary are reported: Himantoglossum adriaticum from the Mecsek Mts, the Balaton highlands, the Bakony Mts and the Szigetköz regions (Western-Hungary); Ophrys fuciflora from Zala and Veszprém counties (Western-Hungary); Dactylorhiza fuchsii from Mezőföld region; Orchis mascula subsp. signifera from the northern part of the Great Plain (Northeastern-Hungary).Tétel Szabadon hozzáférhető Három új fűfaj Magyarország flórájában: Paspalum dilatatum, Phalaris aquatica és Panicum schinzii(2025-06-16) Süveges, Kristóf; Schmidt, DávidIn this paper, we present the new occurrence of two grass species previously unknown in the flora of Hungary and one grass species for which we have only one historical record. Panicum schinzii Hack. is an annual species from South Africa, Paspalum dilatatum Poir. is a perennial species originating from South America, and Phalaris aquatica L. is also a perennial taxon native to the Mediterranean. The only well-developed individual of Panicum schinzii was found on a gravel reef of the Rába river in Western Hungary, while the two newly observed perennial grass species appeared in the Great Hungarian Plain: a single individual of Paspalum dilatatum was observed in a suburban environment on the southern edge of the town of Soltvadkert, while a small population of Phalaris aquatica occurs along a highway near Szeged. In this paper, we describe the European distribution and habitat preference of these three species, we assess their invasion potential and we fit them into the Hungarian dichotomous key of vascular plants. Although we cannot state with certainty that the specimens of Panicum schinzii , Paspalum dilatatum and Phalaris aquatica we report here are the first ones that have ever appeared in Hungary, but their localities and the numbers of individuals suggest that they have entered the country very recently. The annual Panicum schinzii certainly arrived to Hungary naturally by the river Rába, while the perennial Paspalum dilatatum and Phalaris aquatica are more likely to have been introduced by human activities, but both inadvertently. Paspalum dilatatum arrived to its site near Soltvadkert by accident, in the form of propagules in some intentionally sown seed mixture. The fact that all three species are considered in some countries to be invasive or at least problematic species is a cause for concern.Tétel Szabadon hozzáférhető Adatok a Szuha-vízgyűjtő és környéke flórájához II.(2025-04-28) Bátori, Gábor; Szentgyörgyi, PéterThis paper presents new floristic data from the Putnok Hills (Northern Hungary), collected between 2022 and 2024. We found new localities of several taxa ( Gymnocarpium dryopteris , Polystichum aculeatum , Dryopteris carthusiana , D. dilatata , Lychnis coronaria , Dianthus deltoides, D. collinus , Pulsatilla grandis, Hesperis sylvestris, Potentilla rupestris, Chamaecytisus albus, Lathyrus nissolia, Lathyrus palustris, Linum flavum , L. tenuifolium , Polygala major , Gentiana cruciate , Phlomis tuberosa , Pseudolysimachion longifolium , Inula helenium , Jurinea mollis , Centaurea triumfettii , Scorzonera purpurea , Sonchus palustris , Ornithogalum brevistylum , Scilla kladnii , Iris sibirica , Iris aphylla subsp. hungarica , Stipa pulcherrima , Cephalanthera damasonium , Neottia nidus - avis , Platanthera bifolia , Gymnadenia conopsea , Orchis morio , O. tridentata , O. ustulate , O. purpurea , O. elegans ) that are legally protected in Hungary. We also recorded native and archeophyte weeds ( Salsola kali , Silene dichotoma , Ranunculus arvensis , Bunias orientalis , Diplotaxis muralis , Vicia pannonica , Euphorbia exigua , E. falcata , Androsace elongata , Ajuga chamaepitys , Sherardia arvensis , Bromus secalinus ), spreading aliens ( Phytolacca americana , Mahonia aquifolium , Oxalis dilleniid , Abutilon theophrasti , Asclepias syriaca , Juncus tenuis , Elymus elongatus , Panicum dichotomiflorum ) and escapees ( Aquilegia vulgaris , Trifolium incarnatum , Foeniculum vulgare , Primula vulgaris , Lonicera caprifolium ). This article contains data on 144 species, 8 of which are new to the flora of the Tornense region ( Phytolacca americana , Mespilus germanica , Rhinanthus × hungaricus , Orobanche alba subsp. major , Dipsacus × fallax , Filago vulgaris s. str., Rudbeckia hirta , Bolboschoenus laticarpus ) and 8 to the Putnok Hills ( Polystichum aculeatum , Ranunculus trichophyllus , Diplotaxis muralis , Lathyrus palustris , Lonicera caprifolium , Crepis pulchra , Allium rotundum , Lolium multiflorum ).Tétel Szabadon hozzáférhető A Digitaria ciliaris egykori előfordulása Magyarországon – egy herbáriumi revízió eredményei(2025-05-14) Bauer, NorbertRevision of genus Digitaria in BP Herbarium Carpato-Pannonicum collection helped to discover the historical occurrence of Digitaria ciliaris (Retz.) Koeler from Győr, in the area of an old cotton and wool processing and textile factory. However, it has been proved that the previously published Hungarian records of the species are all wrong, as the Digitaria -keys of Hungarian herbals misinterpreted the taxon, mainly as a synonym of D. sanguinalis subsp. pectiniformis . The herbarium survey confirmed that D. sanguinalis is the most common taxon in Hungary. D. sanguinalis subsp. pectiniformis is also widespread, but probably somewhat under-mapped. Probably not native to Hungary, most probably an archeophyte taxon. Specimens have been collected from disturbed habitats associated to railways and from xerothermic vineyard areas for over a hundred years. D. ischaemum is certainly native to the region, with a recognisable natural distribution pattern, and is found mainly in the sandy and gravelly soils of the lowland and hilly areas of the country. This species has recently become more common in urban areas across the country with the recent spread of sand-lined pavements. D. ciliaris of tropical/subtropical origin is a casual alien species that was formerly present in the Hungarian flora.Tétel Szabadon hozzáférhető A Callitriche brutia komplex tagjai (C. hamulata, C. brutia subsp. brutia és subsp. naftolskyi) Magyarországon(2025-06-27) Mesterházy, Attila; Takács, Attila; Lukács, Balázs András; Süveges, KristófThis article summarizes the recent occurrences of taxa of the C. brutia complex in Hungary. Formerly, C. hamulata was known from Hungary based on a specimen of uncertain origin from Vas County. The first confirmed record of the species date back to 2014, since then it has been found from from a total of 4 localities in streams in Western Transdanubia and along the Danube. The first detection of C. brutia subsp. brutia was in 2016 in the Kunkápolnás marsh of the Hortobágy region, and since then the subspecies has been spreading in the area. The subsp. naftolsky was found in 2024 in a terrestrial form in a saltwater marsh in the Dél-Tiszántúl region. While C. hamulata is probably a native member of the Hungarian flora, the two subspecies of C. brutia may have colonised more recently, probably introduced by birds. Their colonisation may be related to the ongoing climate change, which has resulted in the introduction of plants from the Mediterranean region, often by natural means.Tétel Szabadon hozzáférhető Adatok Budapest környéke flórájának ismeretéhez IV.(2025-03-25) Somlyay, Lajos; Csábi, MiklósNew or recently confirmed localities of more than 50 rare or poorly known taxa (including 10 ferns) are presented from the territory of Budapest and adjacent territories. Some of those records are new for the spontaneous flora of particular territories, specifically: Anthericum liliago (Szentendre Island), Artemisia alba (Tétény Highland), Cerastium lucorum (Buda Mts, Börzsöny) , Epipactis albensis (Budapest, Pilis), E. futakii (Börzsöny), E. moravica (Börzsöny, Visegrád Mts), Hippophae rhamnoides (Szentendre Island), Myosotis discolor (Börzsöny). The new localities of Cnidium dubium , Platanthera chlorantha , Spiranthes spiralis , Sternbergia colchiciflora , Veronica jacquinii and Viola stagnina are also noteworthy. Some species are discussed in more detail in relation to their former Hungarian literature records.Tétel Szabadon hozzáférhető Alföldi páfrány-előfordulások másodlagos élőhelyekről(2025-02-21) Süveges, Kristóf; Bátori, ZoltánIn this study we report the occurrence data of 14 fern species from the area of the Danube–Tisza Interfluve and the Tiszántúl (Great Hungarian Plain). All data have been collected from secondary habitats, such as buildings and man-made structures, pine plantations and canals. We present new data on seven protected and one alien fern species ( Azolla filiculoides ). Seven and six species were found together on the brick walls of old buildings near the railway stations in Bácsalmás and Baja, respectively. The new occurrences of Gymnocarpium robertianum , Pteridium aquilinum , Asplenium adiantum - nigrum and Polypodium vulgare have great importance from a floristic point of view. The latter two species were recorded both in pine plantations and on brick walls.Tétel Szabadon hozzáférhető Új jövevényfaj Magyarországon: a Sabulina tenuifolia előfordulása Budapesten(2025-02-21) Rigó, AttilaRailways are important introduction and dispersal corridors for plant species. The first establishment and spread of many alien plant species in Hungary can be linked to railways nowadays. Sabulina tenuifolia (L.) Rchb. is a sub-Atlantic–sub-Mediterranean–Western-Asian plant, which was not previously known from the flora of Hungary, but a small population of the species was found in Budapest, at the Rákospalota-Újpest railway station. The plant was probably introduced as a stowaway of rail transport and its further spread along railways is expected. The inclusion of the species in the Hungarian plant identification key has been published in the article.Tétel Szabadon hozzáférhető A csemege baraboly (Chaerophyllum bulbosum) etnobotanikai és kultúrtörténeti jelentősége a Kárpát-medencében(2024-12-19) Németh, Attila G. L.; Horváth, Balázs; Pinke, GyulaTuberous-rooted chervil ( Chaerophyllum bulbosum ) is one of the iconic plants in the Carpathian basin regarding ethnobotany. It is considered native to this region and it is known by about one hundred different Hungarian folk names and allophones. We have plenty of historical data about its gathering from the wild from the end of the 16th century, but certainly, it could have been collected much earlier by the people who lived here. In the whole Carpathian basin, mostly its tubers (and rarely the leaves as well) were gathered mainly by children, which were eaten in various forms and dishes, but most frequently raw as salad. Its popularity started to decline by the end of the 19th century, and in the middle of the 20th century, it was regarded as one of the ‘beets out of fashion’, which was slowly disappearing from the diet. From the 21st century, there is only one record about its gathering and consumption from Transylvania. In former times, along with other Chaerophyllum and Anthriscus species it was recommended to cure scorbute and diarrhoea and as a poultice for ulcers. In the Middle Ages, it was cultivated throughout Eastern and Central Europe, which could have also been true for the Carpathian Basin. Master Roger mentioned this species among the plants of devastated peasant gardens (1243, after the Mongol invasion). Thereafter, we have records only from the middle of the 19th century showing the obvious growing of its cultivated variety (called ‘chervil-beet’). However, its cultivation remained quite sporadic, and by the middle of the 20th century, it was already fully neglected. The plant occurred in Hungarian cookery books from the 16th century, especially in Transylvanian gastronomy. The remembrance of its former folk uses retained in Hungarian culture as well, it emerges in several poems and prose.Tétel Szabadon hozzáférhető Adatok és kiegészítések Magyarország edényes flórájához(2024-12-03) Molnár, Csaba; Somay, László; Demeter, LászlóThe paper presents 1593 current chorological data of 584 taxa (species, subspecies, varietas, hybrids) from Hungary, collected during the last few years. All of these connected also to a total of 184 CEU quadrats. Among the species characteristic to the natural habitats, we highlighted the records of several species protected in Hungary ( Adoxa moschatelina , Althaea cannabina , Cardamine parviflora , Centaurium pulchellum , Gagea pusilla , Orobanche reticulata , Potentilla patula , Rosa zagrabiensis , Spergula pentandra , Trifolium diffusum , Valerianella dentata , V. rimosa , Veronica officinalis , Viola collina and V. pumila ). In the Northern part of Hungary, we observed the establishment of Cerastium dubium and Ranunculus pedatus at several places along roadsides, which species have been known from the surrounding saline areas for a long time, but their appearance at roadsides is relatively new phenomenon. In addition, Aegilops cylindrica , Crypsis schoenoides , and Fumaria vaillantii subsp. vaillantii were found in one location – each species on roadsides. Along the railway tracks, we found disturbance-tolerant pioneers of rocky grasslands, open sandy and loess grasslands, e.g. many population of the native Androsace elongata , Anthemis ruthenica , Centaurea arenaria , Draba nemorosa , Erodium ciconium , Medicago monspeliaca , Microrrhinum minus , Saxifraga tridactylites and Vulpia myuros were found, as well as numerous ruderalia and the archaeophyt such as Aegilops cylindrica . In addition to the more common species from the urban flora, we present some new data on the occurrence of the rarer Amaranthus blitum subsp. emarginatus , Chenopodium glaucum , Ch. murale , Ch. opulifolium , Ch. vulvaria and Euphorbia peplus . We have also listed some of the rarer field weeds and species that can establish in younger and older old-fields. Bromus secalinus has been found in several places in the northeastern part of Hungary. We also observed Calepina irregularis , Centaurea solstitialis , Centaurium pulchellum , Erysimum cheiranthoides , Filago lutescens , Fumaria officinalis subsp. officinalis , Geranium dissectum , Misopates orontium , Myagrum perfoliatum , Reseda phyteuma , Spergularia salina and Veronica anagalloides populations. Erodium hoefftianum is a member of the natural flora, but is now found only in old-fields. We found some pasture weeds in regions where they are not common (e.g. Bupleurum tenuissimum , Cerastium dubium and Trifolium striatum ). The study also presents some species that are data deficient for taxonomic reasons, but not very rare ones (or we don’t know that). This group includes Arabis sagittata , Bolboschoenus glaucus , Bromus commutatus , B. racemosus , B. ramosus , Fumaria vaillantii subsp. schrammii , Ononis spinosiformis subsp. semihircina , Potentilla collina and Viola suavis “white morfotype”. We have drawn attention to the effect of ecological-botanical works on flora-influencing. We found Anthemis ruthenica (species of sandy grasslands) in a mountain meadow, which is probably the result of seeds accidentally introduced by researchers. Finally, the paper provides data on the current distribution of hybrid taxa. A new individual of Betula × rhombifolia was established in the Mátra Mts. We found some Euphorbia individuals that appeared to be a transitional form between E. esila and E. virgata ( E. × intercedens ; Eu. esula subsp. saratoi ). We also present some Verbascum and Viola hybrids. Hybrids were determined on a macromorphological basis.Tétel Szabadon hozzáférhető Adatok idegenhonos növényfajok ismeretéhez Magyarországon I. (1–6)(2024-12-02) Molnár V., Attila; Kis, Szabolcs; Molnár, Csaba; Bak, Henrietta; Fekete, Réka; Kozma-Bognár, Tamás; Sonkoly, Judit; Süveges, Kristóf; Takács, AttilaThis is the first in a series of papers by various authors presenting previously unpublished data relevant to the knowledge of alien vascular plants in Hungary. This paper deals with the families Pteridaceae, Brassicaceae, Plantaginaceae, Rosaceae, Ranunculaceae, Fabaceae and Poaceae. It includes new area records and distributional considerations for Cochlearia danica and Plantago coronopus spreading along Hungarian road-network as well as records of Panicum riparium from the Northern Hungarian Mountain range based on field work and herbarium revision. We note the importance of checking the data previously collected as P. capillare . Floristic data of two species not previously recorded in Hungary ( Cardamine corymbosa, Ranunculus marginatus ) and 3 sporadically occurring alien species ( Aphanes australis, Lepidium didymum, Medicago arabica ), from garden centres in the Debrecen area were published . A 7-year long survival of a population of Adiantum capillus-veneris in a traditional, abandoned well is also documented between 2017 and 2024. The paper reports that traffic infrastructure can facilitate the spread of Elymus elongatus along roads.Tétel Szabadon hozzáférhető Erdei növényfajok elterjedése és természetvédelmi helyzete a Duna–Tisza köze homoki tölgyeseiben(2024-12-17) Rédei, Tamás; Árvai, Ágnes; Barabás, Sándor; Kabai, Melinda; Kun, András; Lhotsky, Barbara; Lukács, Attila Nándor; Mártonffy, András; Nagyné Harcsás, Anita; Rigó, Attila; Szabadi, Kriszta Lilla; Viszus, Virág; Csecserits, AnikóIn this article we summarise the floristic data collected during our research in oak forests in the northern part of ‘Kiskunság’ since 1998. Between 2020 and 2024, we systematically visited and mapped the forest stands in the region, which have been continuous since the First Military Survey (late 18th century). A total of 100 forest patches were identified as semi-natural pedunculate oak, covering a total of 865 hectares, and floristic data could be collected in 94 of them. The data were supplemented by scattered occurrences found during the survey. A total of 1207 occurrences of 96 forest and forest edge species were recorded in the stands. Of these, 214 occurrences of 81 species are new compared to the Hungarian Floristic Mapping data. Species were grouped according to habitat preference and regional vulnerability. In total, 23 species were classified as threatened and 37 as critically endangered. Without active conservation interventions, these species could become extinct in the ’Kiskunság’ within a few decades.Tétel Szabadon hozzáférhető Corydalis pumila a Dél-Tiszántúlon és további adatok a Kis-Sárrét és a Körös menti sík erdei flórájához(2024-12-06) Korda, MártonThis article presents some interesting floristic data from the survey of forests of the ‘Kis-Sarrét’ and the ‘Körös Plain’ microregions (East Hungary) between 2016 and 2024. This article focuses on species associated with mesophilic forests. The majority of the data presented are from the forests of the ‘Kis-Sarrét’ and the ‘Körös Plain’, including some surprising species new to the southern part of the ‘Tiszántúl’ region, including Corydalis pumila in Bélmegyer and Salvia glutinosa in Körösnagyharsány. Several species typical of mesophilic forests were also found in these two areas, which are extremely rare in the southern part of ‘Tiszántúl’ region, of which only one or two current occurrences are known (e.g. Allium oleraceum , Carex remota , Hesperis sylvestris and Orchis purpurea ). In addition to the most interesting data, I report the occurrence of all species associated with mesophilic forests that are not included in the maps of the online database of Hungarian vascular plants, except for a few common species. The level of detail of the 42 species enumerated varies according to their importance. The more interesting species are described in more detail, while for the more common species, only brief occurrence data are given, with some comments where necessary.Tétel Szabadon hozzáférhető A Poa remota felfedezése a Bakonyban, a faj déli areaperemén(2024-11-29) Bauer, NorbertPoa remota , previously known in Hungary only from the northern part of the Hungarian Middle Range, was found in the Bakony Mountains, the southern part of the mountain range. The species was recorded at three localities in the central part of the „Öreg-Bakony” geographic unit, in the valley system of the „Fekete-séd” stream. Similar to other Central European observations, the species thrives in spring marsh habitats and alder swamp forests around the springs. Poa remota may be a relict species of a colder climate period in the Bakony Mts. Its occurrence is also important from a phytogeographical point of view, as this record slightly expands the local distribution limit southwards.Tétel Szabadon hozzáférhető Adatok a Pannon Ökorégió őshonos növényfajainak ismeretéhez II. (6–22)(2025-12-13) Kacsinecz , Gábor; Bartha, Dénes; Bubán, Réka Zsófia; Demeter, László; Etter, Dénes; Halász, Alexandra; Harmos, Krisztián; Hegedüs, Ivett; Hornung, Erzsébet; Jordán, Sándor; Józan, Zsolt; Kiss, Tamás; Kóródi, Blanka; Lengyel, Attila; Lukács, Róbert; Mészáros, András; Molnár V., Attila; Pintér, Balázs; Ruisch, Anikó; Segesdi, Edina; Süveges, Kristóf; Szűcs, Péter; Szakács, Éva; Szász, Anna; Takács, Attila; Tompos, Attila; Türke, Ildikó Judit; Kis, SzabolcsIn the second part of this article series, which provides data contributing to the knowledge of native plant species of the Pannonian Ecoregion, we address rare species – mostly legally protected in Hungary – belonging to the families Cephaloziaceae, Athyriaceae, Dryopteridaceae, Cystopteridaceae, Thelypteridaceae, Brassicaceae, Rosaceae, Elatinaceae, Apiaceae, Orobanchaceae, Liliaceae, and Orchidaceae. We report the current occurrence of Nowellia curvifolia in the Sub-Pannonian region of Slovenia. We present an exceptionally species-rich habitat for ferns ( Athyrium filix-femina , Dryopteris carthusiana , D. dilatata , D. filix-mas , Gymnocarpium dryopteris , Polystichum aculeatum ) from the ‘Borsodi ártér’ microregion. We provide data on the stands of Thelypteris palustris observed along the main irrigation canals of ‘Tiszántúl’ region. We publish new occurrence records contributing to the Hungarian distribution of Aethionema saxatile , Crataegus nigra , Elatine hungarica , Sium sisarum , Orobanche hederae , Himantoglossum adriaticum , Epipactis placentina , E. exilis , E. pseudopurpurata , and E. microphylla , as well as to the appearance of Helosciadium repens in urbanized environment. Gagea spathacea and G. bohemica are newly recorded for the Zemplén Mts; Epipactis nordeniorum and Epipogium aphyllum are new for the flora of the Mátra Mts; and Himantoglossum calcaratum is newly recorded for Hungary. We also present spontaneous establishment of several orchid species in the courtyard of a secondary school in Veszprém. Additionally, we report on the pollinating insects observed on the flowers of Sternbergia colchiciflora . Two previously misreported records are also corrected.Tétel Szabadon hozzáférhető Érdekességek és változások a mecseki völgyek mohaflórájában(2025-10-28) Csiky, János; Erzberger, Peter; Kaló, Orsolya; Nádasdi, Marcell; Wolf, Mátyás; Zakály, Gyula; Sipos, AttilaThe paper discusses the bryophyte flora of 77 sites in the Mecsek Mountains, mainly in deeper valleys. It includes species that are new to the area’s flora and/or endangered in Hungary, as well as mosses that have become more widespread or locally abundant compared to data from 1968 and 1983. The names of the locations, their geographical centers (centroids), and the grid unit IDs of the Hungarian Flora Mapping Programme (HFMP), where the sites are located, are listed and referenced according to their number in the list. Some of the species are national rarities, such as Scleropodium touretii , newly recorded in the Mecsek in 2023. Its second known occurrence in Hungary is reported in the Enumeration. We detail the occurrences of several species new to South Transdanubia, including Dicranum spurium , Diplophyllum albicans , Hypnum jutlandicum , Isothecium myosuroides , Kindbergia praelonga , Rhynchostegiella curviseta , Riccardia palmata , and Sciuro-hypnum plumosum . Additionally, species newly recorded from the Mecsek Mountains include Fontinalis antipyretica , Leptodon smithii , Plagiomnium ellipticum , Pseudocampylium radicale , and Tortula brevissima . For two taxa, we present data of importance not only for the Mecsek, but also for the North-Hungarian Mts: Riccardia palmata , new for the Tornai-karszt, and Dicranum spurium , for which we confirm a very old record in the Zemplén Mts. We also note the widespread, sometimes massive occurrence of some aquatic and subaquatic mosses, e.g. Rhynchostegiella teneriffae , Hygrohypnum luridum , which have been recorded only once in the mountains in the last 50 years. The taxonomically uncertain Hygroamblystegium fluviatile with similar habitat requirements can now be found widely throughout the mountains. New populations of Palustriella commutata , considered endangered and declining in the country, have been found in the Mecsek. The expansion of (sub-)aquatic species is particularly surprising in the light of recent hydroecological studies indicating that the streams in the Mecsek are drying up. The situation is similar regarding Rhynchostegium rotundifolium , previously thought to be a Tilio-Acerion (slope and ravine forest) species, which is legally protected in Hungary and only had one record from the Mecsek in the last century. This forest species is now found in peri-urban, sub-urban, slightly to moderately disturbed and secondary habitats throughout the mountains. Similar to its preference in Germany, outside of semi-natural habitats it occurs mainly on built structures in forest edges, ruins, abandoned mine sites, often in stands mixed with black locust and contaminated with litter. Microeurhynchium pumilum , which prefers sub-Mediterranean and sub-Atlantic climate, shady and humid habitats, has become one of the most widespread and abundant forest bryophytes in the Mecsek, in contrast to its few records 60 years ago. Half (50%) of the new mosses in the flora of the Mecsek can be connected to the cooler boreal biome, while 21% is associated with the milder Mediterranean-Atlantic biome. The average of MAT (mean annual daily mean air temperatures averaged over one year) and MAP (accumulated precipitation amount over one year) of the 14 new species according to BET (Bryophytes of Europe Traits) indicates areas with much lower temperatures (7.7°C) than in Hungary, but with precipitation conditions (749 mm) similar to those in the Mecsek. The vast majority of the new species are extremely rare in Hungary, and are inconsistent with current climate warming trends. In contrast to the mosses with striking increase in records, the detection of new species is likely due to chance, in addition to systematic research at finer spatial scales, rather than to local expansion of the species. However, in the case of expanding and abundant species, it is still an open question whether their dynamics compared to 40-60 year old references are apparent or real: the result of sampling bias in previous surveys or a consequence of climate change. In any case, the abundance of the above mentioned bryophytes in the Mecsek is not consistent with their current Hungarian Red List threat classification, and this cannot be attributed to changes in definitions since 2010. The detected distribution and abundance, as well as the increase in the number of new species in the country within a decade, highlights the need for an updated Red List of Hungarian bryophytes.Tétel Szabadon hozzáférhető Új növényfajok Magyarország adventívflórájában(2025-11-27) Wirth, Tamás; Balogh, Lajos; Csathó, András István; Csiky, János; Dela Campos, Génesis Katherine; Eszik, Norina Erika; Farkas, Sándor; Király, Angéla; Király, Gergely; Kiss, Tamás; Malatinszky, Ákos; Németh, Janka; Pinke, Gyula; Rigó, Attila; Schmidt, Dávid; Schmotzer, András; Süveges, Kristóf; Takács, Attila; Vidéki, Róbert; Mesterházy, AttilaIn this compilation we present the first occurrences of 22 vascular plant species not previously documented from the territory of Hungary. Fifteen of the species are casuals, while seven of them are already naturalised, at least locally. We report the mass appearance and naturalization of Sagina maritima and the emergence of Carduus pycnocephalus along roadsides, single sites of Chaenorhinum litorale and Solanum elaeagnifolium near railway lines, and the localities of Lepidium latifolium and Sisymbrium volgense in various disturbed habitats, and some occurrences of Acalypha virginica in urban environments. The first record of Bacopa rotundifolia is from a rice field, while that of Hydrocotyle sibthorpioides is from an urban lawn, and Senna tora occurred on construction debris. Among the species that appeared spontaneously as a result of earlier planting, Celastrus orbiculatus forms a naturalized population in a tree plantation, Hygrophila triflora and Pontederia cordata are present in artificial canals and lakes, and Cenchus longisetus has become naturalised and is spreading along the banks of the Danube in Szentendre. Most other species are associated with trampled or heavily disturbed habitats in built-up areas (pavement edges, fences, ruderal areas). Alnus cordata , Eryobotria japonica , Euonymus alatus , Paxistima canbyi , Pistacia terebinthus and Solanum pseudocapsicum are present as casuals, while Viola palmata has become naturalised in built-up environments. The naturalisation process of Allium aflatunense on a private property has also been documented.Tétel Szabadon hozzáférhető Adatok a kőszegi Téglagyári-tó algaflórájához, különös tekintettel néhány Desmidiales képviselőre(2025-10-23) Bancsó, SándorThe western border region of Hungary, including Kőszeg and its surroundings, is a poorly documented region from an algal point of view. The first reason for this is that the major standing water bodies found here are all artificial and relatively young in age. However, in the absence of other natural water bodies, they are important as potential wetland habitats, as is the information needed to conserve them. The present paper is the first to describe the algal flora of Téglagyári-tó in Kőszeg in the context of the planned process of processing lakes and reservoirs in the area. Despite its small size and the disturbance caused by its recreational use, Téglagyári-tó is a species-rich, highly diverse habitat in terms of algal diversity. The Chlorophyta division accounts for the majority of the species recorded, but the Charopyta, Euglenophyta and Heterocontophyta divisions also make a significant contribution. Its value is particularly enhanced by rare species (e.g. Stauridium privum , Cosmarium sinostegos var. obtusius ), not to mention the red-listed endangered species ( Cosmarium anceps , Cylindrocystis brebissonii , Euastrum bidentatum , Euastrum denticulatum , Penium spirostriolatum , Staurastrum oxyacanthum , Staurastrum tetracerum ). A special feature is the presence of desmids ( Euastrum biverrucosum , Euastrum minimum , Staurastrum levanderi var . hollandicum ), which are not yet recorded in the region, and which colonise the slightly alkaline mesotrophic environment of the lake, otherwise known from a more acidic eutrophic environment. As a curiosity, Entomoneis ornata should be mentioned, which was identified in an environment associated with higher salinity waters and only moderately loaded with inorganic nutrients.Tétel Szabadon hozzáférhető Az egerbaktai tőzegmohás láp flórájának és vegetációjának változása(2025-10-15) Nagy, János György; Dudás, János András; Töpler, Dániel; Hoblyák, JúliaSince 1988, open stands of Menyanthes trifoliata have disappeared, communities of Carex rostrata have declined, and the Sphagnum -dominated willow carr has expanded. The mire’s central associations include Caricetum rostratae , Salici cinereae – Sphagnetum recurvi sphagnetosum squarrosi , and Calamagrosti – Salicetum cinereae . In the mainly nudum lagg zone, the following communities occur: Bidenti–Polygonetum hydropiperis, Bidenti–Polygonetum hydropiperis urticetosum dioicae , Caricetum acutiformis , Juncetum effusi , Glycerietum maximae , and a community dominated by Poa nemoralis . We recorded 77 vascular plant species, 62 of which were new to the site. Rare species have declined in number: Menyanthes trifoliata and Cicuta virosa are now absent, and of the former eight Sphagnum species, only Sphagnum squarrosum remains. The original Salici cinereae–Sphagnetum recurvi sphagnetosum recurvi subassociation transitioned into Salici cinereae–Sphagnetum recurvi sphagnetosum squarrosi after the mire remained completely dry and peat-moss-free for several years around 2000. Central communities reflect a cool, moderately acidic, oligotrophic environment with low pH and conductivity. In contrast, lagg vegetation indicates warmer, nutrient-rich, less acidic conditions. The mire’s most valuable zone is its central, Sphagnum -rich area, whose preservation depends on a natural water supply maintained by continuous forest cover in the catchment and stable or reduced large game populations.