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A new alien species to the Hungarian flora: Polypogon viridis (Gouan) Breistr.
165–172Views:150Polypogon viridis (Gouan) Bresitr., a new alien species to the Hungarian flora, was detected between the years 2016–2019. Water bent (P. viridis), originating from the Mediterranean basin, was recorded from several plant nurseries and outdoor flowerpots in Transdanubia, Hungary. The new Hungarian records fit into the observed phenomenon that ornamental plant trade is an important factor in the spread of this species. Morphological characterization and insertion of P. viridis into the Hungarian identification key are also provided in this paper. Since P. viridis was represented in large numbers at some of the Hungarian localities, future monitoring of its spread may be important to evaluate the invasiveness of the species in the country.
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Data to the flora of Southern-Nyírség and its surroundings
68–85Views:1699In this paper we provide data on the flora of Monostorpályi, a floristically underrepresented settlement in South-Nyírség and Berettyó–Kálló interfluve, and publish some interesting floristic observations from the Debrecen city area. In our compilation we provide data on 58 plant species. Among the species listed in the enumeration we find taxa from the region not previously reported at all (Lathyrus nissolia, Gagea villosa, Catabrosa aquatica, Potamogeton lucens, P. pusillus). In total, we publish new occurrence data for 16 protected plant species, which are generally typical of the natural habitats of the Nyírség, but are on the decline overall (e.g. Hottonia palustris, Dianthus superbus, Cirsium rivulare, Lychnis coronaria). We also provide data on the distribution of some rare or declining weed species (Anthemis cotula, Myagrum perfoliatum, Agrostemma githago) and confirm the previously known occurrence of some poorly known plant species (Luzula pallidula, Carex hordeistichos). Furthermore, the spread of some alien species (Broussonetia papyrifera, Phyllostachys sp.) is also highlighted.
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Data on the occurrence of alien plants in Western Transdanubia (Hungary)
185–188Views:760In his publication the author provides data on the occurrence of 11 alien species in Western Transdanubia. Three of these species (Euphorbia maculata, Euphorbia peplus, Muscari armeniacum) were observed to have spread rapidly in the past decade. It can be concluded that 4 species (Artemisia annua, Crocus banaticus, Polycarpon tetraphyllum, Veronica filiformis) have reached a state which is close to naturalization, while the other reported species (Euphorbia lathyris, Senecio inaequidens, Silybum marianum, Veronica peregrina) are casual in this region at present.
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A new alien species in Hungary: Limnobium laevigatum (Hydrocharitaceae)
9-15Views:245The South American Spongeplant (Limnobium laevigatum (Humb. & Bonpl. ex. Willd.) Heine) is a floating aquatic plant native to freshwater habitats of tropical and subtropical Central and South America. It is frequently used for ornamental purposes in ponds and aquariums, and became invasive in the recent decades around the world. It has a high reproductive potential and a high dispersal capacity as well. It can form massive floating mats causing light limitation and creating anoxic conditions in the underlying water column, which strongly reduces native animal and plant biomass and diversity. It can also hamper navigation and water flow in rivers and canals. It has been introduced to the United States, Australia, Indonesia, Japan, Zambia and Zimbabwe. There is only one previous record in Europe (Belgium). This article is about the first record of Limnobium laevigatum in Hungary. I found two localities situated near Tata-Naszály and Dunaalmás (North-western part of Hungary). Both localities are fed by hot-water springs. It forms a small but dense population in Dunaalmás located near to the hot spring. The population in Tata-Naszály can be found in a 1.3 km long section of a stream, where it formed a sparse population in 2018.
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Cardamine occulta Hornem. in Hungary, and other stowaways of the ornamental plant trade
195–214Views:441During the study of the weed flora of garden centers in Hungary (among 2017–2020), remarkable populations of Cardamine occulta Hornem., a new alien for the Hungarian flora were found. C. occulta was present altogether in 51 of the 53 visited sites. Dominantly the regularly irrigated and continuously moist microhabitats (pots, containers, muddy surfaces of geotextile-covered beds etc.) were colonized. During the revision of our recently collected specimens, deposited in JPU and DE herbaria as Cardamine hirsuta L., further individuals proved to identical with this till overlooked species. One of them (27.08.2004., Heves county: Eger [8088.3; 8188.1], coll. by A. Schmotzer, deposited in DE collection) proved to the third documented occurrence in Europe, comparing to the accessed literature data. Eclipta prostrata (L.) L. and Urtica membranacea Poir. are also new aliens for the Hungarian flora. Several introduced individuals of these taxa were found in containers of imported thermophilous woody ornamentals at 4 and 2 sites, respectively. Tens of individuals of Eclipta prostrata were also found in a sapling-bed at another site. New populations of scarce or rare Euphorbia prostrata Aiton, E. serpens Kunth and Veronica peregrina L. were also documented.
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The purple viper's bugloss (Echium plantagineum), a new adventive species for Hungary
199-206Views:841Following global trends, the number of newly established alien plant species is increasing in Hungary. Not only professional scientists but also citizens could contribute to the discovery and documentation of new occurrences. One of the first records of the purple viper’s bugloss (Echium plantagineum L.) in Hungary originate from an online group dealing with wild plant species identification. This species is native in Western Mediterranean countries, and is introduced to other continents. In Australia, it is a well-spread, largely problematic invasive species, and it might show similar tendencies in Hungary as well. In order to acquaint the wider public with this species, we present its morphology, phenology and other characteristics and provide a possible inlay in the Hungarian identification key.
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Contributions to the subspontaneous occurrences of Malva moschata (Malvaceae) in Hungary
200–202Views:103Malva moschata is an alien species in Hungary, seldom cultivated as garden ornamental plant. Although considered as occasional escapee from cultivation, Hungarian literature has only cited Budapest as an example of such cases thus far. During a revision of the Malva collection in BP herbarium, several specimens were traced (mostly erroneously labelled as Malva alcea) which demonstrate subspontaneous occurrences of the species, primarily from the Transdanubian region (Hungary). The vouchers are hereby listed, arranged in alphabetical order of localities (settlements). Literary connections, if relevant, are briefly discussed.
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Habitats and protected plants of Cuha-valley (Bakony Mts, W-Hungary)
80-88Views:66Floristic data were collected and habitat mapping was performed between 2009 and 2011 in the valley of Cuha-creek. During the field work occurrences of 423 vascular plant species (including 31 protected taxa) were recorded. Potentilla indica represents a previously unknown alien taxa of the study area. The dominant vegetation type of the Cuha-valley is beech forest. Further characteristic, important habitats are scree, ravine and hilltop forests. On the southern part of the valley – in close proximity of the Cuha-creek – expansion of several alien plants (Impatiens glandulifera, Fallopia spp., Heracleum mantegazzianum) were observed.
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Contributions to the Atlas Florae Hungariae IX.
253–256Views:291The current paper is the 9th in the series aiming to provide new data to the distribution maps of Atlas Florae Hungariae. Data of 734 vascular plant taxa (from 222 flora mapping quadrats) are presented in this study. The new localities are spread across nearly the entire country; however, most of the data are from the North Hungarian Mts, the northern part of the Danube-Tisza Interfluve, the southern edge of Hanság, alongside River Maros and the Hortobágy. Altogether, 1632 new data records are presented in this paper. The list mainly contains rare and locally important native species, as well as species with uncertain native/alien status (e.g. Allium ursinum, Chamaecytisus triflorus, Cotoneaster niger, Cyperus pannonicus, Elatine triandra, Eleocharis acicularis, Eleocharis ovata, Erodium hoefftianum, Geranium lucidum, Globularia punctata, Hippuris vulgaris, Hottonia palustris, Lindernia procumbens, Marrubium vulgare, Ononis pusilla, Orobanche bartlingii, Orobanche cernua, Pisum elatius, Polycnemum majus, Polygonum graminifolium, Ribes nigrum, Schoenoplectus triqueter, Verbascum ×denudatum, Verbascum ×vidavense, Viola canina subsp. schultzii). We report new localities of expanding alien species (e.g. Amaranthus deflexus, Artemisia annua, Euphorbia maculata, Helminthia echioides, Hordeum jubatum, Impatiens glandulifera, Ipomoea purpurea, Mahonia aquifolium, Panicum riparium, Robinia viscosa, Rudbeckia hirta, Veronica peregrina, Yucca filamentosa) and mention a few rare, successfully “surviving” alien plants with nature conservation value (e.g. Acorus calamus, Monochoria korsakowii). Moreover, occurrences of common plants are presented when new to the Atlas Floraea Hungariae (e.g. Bromus hordeaceus, Symphytum officinale, Vicia tetrasperma).
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Taxonomic revision of alien Ludwigia species in Hungary
153–164Views:258Some tropical Ludwigia species have been planted as ornamentals in Hungarian thermal springs since the 1920s. Although they have become naturalised or even invasive in a few places, their specific identity remained generally uncertain. Our herbarium and field studies revealed that three species of alien water-primroses occur in Hungary. The most frequently planted one is Ludwigia repens, which is, however, a sporadic species in its native distribution area. We have found this species in several parts of the country. Although a few escaped and self-sustaining populations were also observed, this species has appeared to be non-invasive so far. Ludwigia grandiflora appeared in Hungary at the beginning of the 2000s. At the moment it is known from three localities, though spreading rapidly, becoming already invasive in its locality at Tata city. A similar species, L. peploides has recently been reported from two localities, where it forms small stands; the success of its naturalisation can be assessed in the future. We found no evidence for the Hungarian occurrence of L. alterniflora that had been published from Eger city. Therefore we suggest deleting this species from the current Hungarian checklist.
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Additions to the flora of Jászság (Central Hungary)
21–30Views:295Within the framework of the Hungarian Flora Mapping Program, nine quadrants were surveyed in the territory of Jászság in 2012 and 2020. Regionally important floristic records of 68 vascular plant species are presented in this paper. Some of them are aliens (e.g., Alopecurus myosuroides, Amaranthus deflexus, Juncus tenuis, Phytolacca esculenta) or rare native weeds (e.g., Aegilops cylindrica, Bupleurum affine, Myagrum perfoliatum). Records of regionally (e.g., Coronopus squamatus, Linaria biebersteinii) or nationwide (Silene bupleuroides) rare native species as well as indicators of former forests (e.g., Clematis recta, Elymus caninus, Melica altissima, Sisymbrium strictissimum) are also presented. An interesting road edge rich in saline species (Artemisia santonicum, Chenopodium chenopodioides, Hordeum hystrix, Plantago maritima) is discussed in detail.
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The role of soil seed bank in restoration and dynamics of Hungarian plant communities
116-135Views:118Soil seed bank has an important role in maintaining plant populations and communities, in regeneration processes, and also provides information about the history of the studied site, the past land use practices, the biotic and abiotic changes and about the current degradation degree. In Hungary there are many researchers related to the seed bank, but from the last few years we do not have a comprehensive work about the results of these works. My goal is to report on the results of former seed bank researches in Hungary and also to highlight the missing topics and further research opportunities. The review is based on 49 articles, the oldest one dates back to 1922, the newest one was published in 2015. Most of the studies use greenhouse or laboratory germination tests to determine the viability of seeds. The earliest studies, which examined the weed seed bank of farmland soils found, that the seed bank was much higher than the total seed bank found on natural and semi-natural habitats studied later. Researchers found the lowest seed bank density in forests. Disturbed sites and former agricultural sites had higher seed bank densities than sites without agricultural use. Most part of seed bank was located in the upper soil layer in all studied communities. In most studies usually a small similarity was detected between the composition of soil seed bank and aboveground vegetation, which suggests that the seed bank has a subordinate role in regeneration processes. Seed bank type classification is lacking from the three-quarter of Hungarian flora species, despite that it is essential for protecting species and communities and for developing proper protection against invasive and alien species.
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Contributions to the escaped, naturalised and potentially invasive species of the Hungarian adventive flora
111-156Views:545In this paper we compiled data on 157 Hungarian adventive plant species – of which 65 had not been reported from the country previously – from 47 settlements of Transdanubia and the Great Hungarian Plain. These taxa are rare, interesting or not included in the most recent list of the Hungarian neophyte species. The list includes data about many rare, occasionally escaping species (e.g. Lagurus ovatus, Salvia coccinea), taxa considered incapable of reproduction under the recent climatic conditions of the Pannonian Basin (e.g. Cupressus sempervirens, Punica granatum) or naturalised plants that may become invasive in the future (e.g. Celtis sinensis, Lonicera japonica). In the outlook we highlighted some special urban habitats (e.g. private and botanical gardens) and practices (e.g. public green space management) that endanger the native flora. We also describe their role in promoting the appearance and the expansion of alien plant species, and processes (e.g. laurophyllisation, spread of thermophile species) that will become increasingly common in the future as a result of climate change.
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Asparagus verticillatus L. in Hungary
38-43Views:151Climbing asparagus (Asparagus verticillatus L.) a new adventive species to the Hungarian flora was recently discovered in the city of Pécs (South Hungary) in 2011–2012. Taxonomy, morphological description and current localities of the species are presented in this paper. A. verticillatus is a mediterranean-submediterranean species native in Balkan Peninsula, Eastern Europe, Western- and Middle Asia. The species is a popular ornamental plant in Hungary, but no data was available about its escape or naturalisation in the country so far. Herbarium specimens from Hungary were collected so far mostly from botanical and private gardens; only one specimen was collected in a dry grassland along a roadside in the city, respectively. The newly discovered small populations are located mostly in secondary dry grasslands, at the edges of vineyards and private gardens on the southern slopes of the Mecsek Mts and only one specimen was found far from the residential area in natural vegetation. Because climbing asparagus is a frequently planted ornamental plant in several locations of Pécs, further escape, naturalisation and persistence of the species is possible in the future.
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Contributions to the Atlas Florae Hungariae II.
227-252Views:280The present article is the second part of the series aiming to contribute with new data to the distribution maps published recently in Atlas Florae Hungariae. Current occurrence data of 612 vascular plant taxa from 283 flora mapping quadrates (CEU) are presented. New records are distributed over the entire Hungary, however, most are localised in the North Hungarian Mts. Occurrence data of rare native taxa (e.g. Antennaria dioica, Bupleurum pachnospermum, Carex rostrata, Ceratocephala testiculata, Cicuta virosa, Cirsium boujartii, Epipactis moravica, Lycopsis arvensis, Parnassia palustris, Pyrus nivalis, Rumex kerneri, Rumex pulcher, Silene nemoralis, Stellaria alsine, Teucrium botrys, Vicia lutea), rare or data-deficient alien taxa (e.g. Nonea lutea, Panicum dichotomiflorum, Silybum marianum) as well as frequent but more or less underrepresented taxa (e.g. Eragrostis minor, Heliotropium europaeum, Saxifraga tridactylites) are also enumerated, since our intention was to fill the gaps in the Atlas. Remarcable contribution on the occupied territory of Ranunculus illyricus and Spergula pentandra in the Nyírség region (E Hungary), and on the Hungarian distribution of expanding alien weed Senecio vernalis are also presented.
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Contributions to the Atlas Florae Hungariae VIII.
238-261Views:223The current paper is the 8th in the series aiming to contribute with new distribution data to the maps published quite recently in Atlas Florae Hungariae. Distribution data of 539 plant taxa from 157 flora mapping units is presented in this study, most of them are located in the western half of the country. As a result of systematic surveys, more than 190 new species were found in a single flora mapping quadrat. In another survey along some asphalted roadsides Puccinellia distans was found as a new species for 68 flora mapping grid units. All these indicate the necessity of further systematic research and publication of floristic results in papers like the “Contributions…” series. Most of the enumerated taxa are frequent, treated usually as weeds, but some of them are sparse and scattered or rare in Hungary (e.g. Nigella arvensis, Vaccaria hispanica, Rumex pulcher, Urtica urens), and in some cases they are legally protected plants in Hungary (e.g. Asplenium adiantum-nigrum, Dryopteris affinis, Gymnocarpium dryopteris and Huperzia selago). We also listed some casual alien plants and naturalized species that were not mentioned in the last neophyte list of Hungary (e.g. Acer cissifolium, Cyperus alternifolius, Gaillardia aristata, Galanthus elwesii). In the Outlook we pointed out the insufficient survey of some synanthropic (urban) habitat types in Hungary, like verges, gardens and flowerbeds that can be the hotbed of established species or can serve as stepping stones for potential invaders.
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Contributions to the Atlas Florae Hungariae III.
122-146Views:296The current paper is the third one in the series aiming to contribute with new distribution data to the distribution maps published recently in Atlas Florae Hungariae. Current occurrence data of 558 vascular plant taxa from 186 flora mapping quadrates (CEU) are presented. New records are indicated from different regions of Hungary; however, most occurrences are located in the North Hungarian Mts. Occurrence data of rare native taxa (e.g. Marsilea quadrifolia, Salicornia prostrata, Stellaria palustris, Potentilla patula, Althaea cannabina, Lythrum tribracteatum, Ajuga laxmannii, Plantago schwarzenbergiana, Alisma gramineum, Gagea bohemica, G. szovitsii), rare or data-deficient alien taxa (e.g. Chorispora tenella, Thladiantha dubia, Senecio vernalis) as well as frequent but more or less underrepresented taxa (e.g. Scleranthus annuus, Vicia hirsuta, V. lathyroides) are also enumerated. In case of the most common species we provided the CEU codes only.
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Escaping of Euphorbia myrsinites from cultivation in Eger (E Hungary)
253–256Views:149Euphorbia myrsinites L. (Euphorbiaceae) is a well-known ornamental plant with native distribution around the Mediterranean Basin, the Black Sea, the Caucasus region and Minor Asia. Its escape from cultivation and its naturalization in Western and Central Europe as well as in North America was reported in many cases. In Hungary, the casual escape of E. myrsinites has been documented more than fifty years ago and new observations were recently reported from different regions of the country. Here, I discuss a new record of the species from the town of Eger (E Hungary). The obtained data allow considering E. myrsinites as a locally naturalized species in the flora of Hungary. According to standardized criteria, the species may be able for local invasions too, but further observations are needed to accurately determine its present status in Hungary.
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Contributions to the Atlas Florae Hungariae I.
101–115Views:217The main aim of the present work is to contribute with new data to the distribution maps published recently in Atlas Florae Hungariae. Occurrence data of 297 vascular plant taxa from 247 flora mapping quarter quadrates (CEU) are presented. This floristic paper is somehow unusual because besides the occurrence data of rare or sporadic taxa (e.g. Armoracia macrocarpa (Waldst. et Kit.) Kit. ex Baumg., Samolus valerandi L., Epipactis voethii Robatsch), frequent, but more or less underrepresented taxa (e.g. Ranunculus ficaria L., Viola kitaibeliana Roem. et Schult., Gagea villosa (M. Bieb.) Duby), as well as alien taxa (e.g. Cymbalaria muralis G. Gaertn., B. Mey. et Scherb., Potentilla indica (Andrews) Focke, Tragus racemosus (L.) All.) are also enumerated, since our intention was to fill the – sometimes evident – gaps in the Atlas. The name initials of the author(s) who actually found the given occurrence are presented in brackets at each record.
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Contributions to the flora of railway-side pioneer habitats on Tiszántúl region
86–101Views:400Verges have considerable importance to preserve diversity in arable landscape. The modernized railway embankments are a great surface to the spread of native pioneer or adventive (invasive) plant species. The new data are about the flora of railway embankments mainly from Tiszántúl region. I present some species found on railway verges (e.g. Equisetum ×moorei, Equisetum ramosissimum, Lycopsis arvensis, Euphorbia maculata, Lepidium densiflorum Tragus racemosus, Vulpia myuros). An especially important new data is the refinding of Galium humifusum in Hungary. Locally non-native and adventive species can use the blanketing materials (sand or gravel) of railway embankments as dispersal corridor and colonize them. The railwayside habitats could contribute to the conservation of rare native pioneer species.
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Two new adventive species from the Rubiaceae family in Hungary
286–296Views:161Two alien species from the Rubiaceae family were recorded as new for Hungary in 2016. Phuopsis stylosa is a rarely used garden plant in Europe, originally occurs in south-west Asia. A small escaped and established stand was found in Csákánydoroszló village in Vas County (West Hungary). Also a small group of Galium murale was discovered in Budapest-Keleti Railway Station (Central Hungary). This species is originated from the Mediterranean and probably spreads by rail transport. Both species are represented in their habitats by small populations therefore their invasiveness can only be evaluated after several years' monitoring.
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Contributions to the Atlas Florae Hungariae VI.
87-102Views:225The current paper is the sixth one in the series aiming to contribute with new distribution data to the distribution maps published recently in Atlas Florae Hungariae. Current occurrence data of 389 vascular plant taxa from 117 flora mapping quadrates (CEU) are provided. New records are indicated from different regions of Hungary; however, most occurrences are located in the North Hungarian Mts and from the city of Szolnok and Western Hungary. Occurrence data of rare native taxa (including data of Equisetum fluviatile, Galium rivale, Gladiolus imbricatus, Hypericum maculatum, Persicaria bistorta, Potentilla inclinata, Ranunculus lingua, Rhinanthus rumelicus, Trifolium fragiferum subsp. bonannii, Viola pumila), rare or data-deficient alien taxa (e.g. Amaranthus blitum subsp. blitum, Cymbalaria muralis, Elymus elongatus, Euphorbia peplus, Heracleum sosnowskyi, Impatiens balfourii, Lepidium densiflorum, Rhus typhina, Telekia speciosa), as well as frequent but more or less underrepresented taxa (e.g. Carex otrubae, Chenopodium polyspermum, Crepis tectorum, Filipendula vulgaris, Petrorhagia prolifera, Poa palustris) are also enumerated. In case of the most common species we provided the CEU codes only.
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Sándor Polgár and the research of the adventive flora of Hungary
188–197Views:105In the 20th century Sándor Polgár was one of the most outstanding researchers of adventive plant species in Hungary. He wrote nine publications in this theme. In the industrial environment of his home town Győr (NW Hungary) he found tropical species, most of them were southern-American origin. The richest alien flora came around the oil factories of the town. He reported 65 taxa new for the Hungarian flora, four of them were new for Europe too. He was a great expert of problematic Solanum, Amaranthus and Chenopodium genera.